Version 2.4.5: Fix build on Xcode 12 and Linux.

- Pin several messages in any chat, including one-on-one chats.
- Jump between pinned messages or open them all on a separate page.
- Send several music tracks as a playlist.
- Send several files as an album in one chat bubble.
- Send a 🎰 emoji to any chat to see if you hit the jackpot.
- Hide Telegram taskbar icon on Linux in Settings > Advanced.

.appveyor/install.bat

@@ -1,86 +0,0 @@
-@echo off
-
-IF "%BUILD_DIR%"=="" SET BUILD_DIR=C:\TBuild
-SET LIB_DIR=%BUILD_DIR%\Libraries
-SET SRC_DIR=%BUILD_DIR%\tdesktop
-SET QT_VERSION=5_6_2
-
-call:configureBuild
-call:getDependencies
-call:setupGYP
-cd %SRC_DIR%
-
-echo Finished!
-
-GOTO:EOF
-
-:: FUNCTIONS
-:logInfo
-    echo [INFO] %~1
-GOTO:EOF
-
-:logError
-    echo [ERROR] %~1
-GOTO:EOF
-
-:getDependencies
-    call:logInfo "Clone dependencies repository"
-    git clone -q --depth 1 --branch master https://github.com/telegramdesktop/dependencies_windows.git %LIB_DIR%
-    cd %LIB_DIR%
-
-    git clone --depth 1 --branch 0.9.1 https://github.com/ericniebler/range-v3
-
-    if exist prepare.bat (
-        call prepare.bat
-    ) else (
-        call:logError "Error cloning dependencies, trying again"
-        rmdir %LIB_DIR% /S /Q
-        call:getDependencies
-    )
-GOTO:EOF
-
-:setupGYP
-    call:logInfo "Setup GYP/Ninja and generate VS solution"
-    cd %LIB_DIR%
-    git clone https://github.com/telegramdesktop/gyp.git
-    cd gyp
-    git checkout tdesktop
-    SET PATH=%PATH%;%BUILD_DIR%\Libraries\gyp;%BUILD_DIR%\Libraries\ninja;
-    cd %SRC_DIR%
-    git submodule init
-    git submodule update
-    cd %SRC_DIR%\Telegram
-    call gyp\refresh.bat --api-id 17349 --api-hash 344583e45741c457fe1862106095a5eb
-GOTO:EOF
-
-:configureBuild
-    call:logInfo "Configuring build"
-    call:logInfo "Build version: %BUILD_VERSION%"
-    set TDESKTOP_BUILD_DEFINES=
-
-    echo %BUILD_VERSION% | findstr /C:"disable_register_custom_scheme">nul && (
-        set TDESKTOP_BUILD_DEFINES=%TDESKTOP_BUILD_DEFINES%,TDESKTOP_DISABLE_REGISTER_CUSTOM_SCHEME
-    )
-
-    echo %BUILD_VERSION% | findstr /C:"disable_crash_reports">nul && (
-        set TDESKTOP_BUILD_DEFINES=%TDESKTOP_BUILD_DEFINES%,TDESKTOP_DISABLE_CRASH_REPORTS
-    )
-
-    echo %BUILD_VERSION% | findstr /C:"disable_network_proxy">nul && (
-        set TDESKTOP_BUILD_DEFINES=%TDESKTOP_BUILD_DEFINES%,TDESKTOP_DISABLE_NETWORK_PROXY
-    )
-
-    echo %BUILD_VERSION% | findstr /C:"disable_desktop_file_generation">nul && (
-        set TDESKTOP_BUILD_DEFINES=%TDESKTOP_BUILD_DEFINES%,TDESKTOP_DISABLE_DESKTOP_FILE_GENERATION
-    )
-
-    echo %BUILD_VERSION% | findstr /C:"disable_gtk_integration">nul && (
-        set TDESKTOP_BUILD_DEFINES=%TDESKTOP_BUILD_DEFINES%,TDESKTOP_DISABLE_GTK_INTEGRATION
-    )
-
-    if not "%TDESKTOP_BUILD_DEFINES%" == "" (
-        set "TDESKTOP_BUILD_DEFINES=%TDESKTOP_BUILD_DEFINES:~1%"
-    )
-
-    call:logInfo "Build Defines: %TDESKTOP_BUILD_DEFINES%"
-GOTO:EOF

.github/ISSUE_TEMPLATE/BUG_REPORT.md

@@ -8,7 +8,7 @@ about: Report errors or unexpected behavior.
 Thanks for reporting issues of Telegram Desktop!
 
 To make it easier for us to help you please enter detailed information below.
---> 
+-->
 ### Steps to reproduce
 1. 
 2. 
@@ -25,6 +25,8 @@ Tell us what happens instead
 
 **Version of Telegram Desktop:**
 
+**Installation source (Linux Only)** - the official website / GitHub releases / flatpak / snap / distribution package:
+
 **Used theme**:
 
 <details><summary><b>Logs</b>:</summary>

.github/stale.yml

@@ -0,0 +1,21 @@
+# Number of days of inactivity before an issue becomes stale
+daysUntilStale: 180
+# Number of days of inactivity before a stale issue is closed
+daysUntilClose: 30
+# Issues with these labels will never be considered stale
+exemptLabels: []
+# Label to use when marking an issue as stale
+staleLabel: stale
+# Comment to post when marking an issue as stale. Set to `false` to disable
+markComment: |
+  Hey there!
+
+  This issue was inactive for a long time and will be automatically closed in 30 days if there isn't any further activity. We therefore assume that the user has lost interest or resolved the problem on their own.
+
+  Don't worry though; if this is an error, let us know with a comment and we'll be happy to reopen the issue.
+
+  Thanks!
+# Comment to post when closing a stale issue. Set to `false` to disable
+closeComment: false
+# Process only issues
+only: issues

.github/workflows/docker.yml

@@ -0,0 +1,25 @@
+name: Docker.
+
+on:
+  push:
+    paths:
+      - '.github/workflows/docker.yml'
+      - 'Telegram/build/docker/centos_env/**'
+  pull_request:
+    paths:
+      - '.github/workflows/docker.yml'
+      - 'Telegram/build/docker/centos_env/**'
+
+jobs:
+  docker:
+    name: Ubuntu
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Clone.
+        uses: actions/checkout@v2
+        with:
+          submodules: recursive
+
+      - name: Docker image build.
+        run: docker build -t telegram_desktop Telegram/build/docker/centos_env

.github/workflows/issue_closer.yml

@@ -0,0 +1,139 @@
+name: Issue closer.
+
+on:
+  issues:
+    types: opened
+
+jobs:
+  comment:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Get the latest version.
+        run: |
+          tag=$(git ls-remote --tags git://github.com/$GITHUB_REPOSITORY | cut -f 2 | tail -n1)
+          echo $tag
+          echo "LATEST_TAG=$tag" >> $GITHUB_ENV
+
+      - name: Get the latest macOS version.
+        shell: python
+        run: |
+          import subprocess;
+          from xml.dom import minidom;
+
+          url = "https://osx.telegram.org/updates/versions.xml";
+          subprocess.check_call("wget %s" % url, shell=True);
+
+          xmldoc = minidom.parse('versions.xml');
+          itemlist = xmldoc.getElementsByTagName('enclosure');
+          ver = itemlist[0].attributes['sparkle:shortVersionString'].value;
+          print(ver);
+
+          open(os.environ['GITHUB_ENV'], "a").write("LATEST_MACOS=" + ver);
+
+      - name: Check a version from an issue.
+        uses: actions/github-script@0.4.0
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          script: |
+            let errorStr = "Version not found.";
+
+            function maxIndexOf(str, i) {
+              let index = str.indexOf(i);
+              return (index == -1) ? Number.MAX_SAFE_INTEGER : index;
+            }
+
+            let item1 = "Version of Telegram Desktop";
+            let item2 = "Installation source";
+            let item3 = "Used theme";
+            let item4 = "<details>";
+            let body = context.payload.issue.body;
+
+            console.log("Body of issue:\n" + body);
+            let index1 = body.indexOf(item1);
+            let index2 = Math.min(
+              Math.min(
+                maxIndexOf(body, item2),
+                maxIndexOf(body, item3)),
+              maxIndexOf(body, item4));
+
+            console.log("Index 1: " + index1);
+            console.log("Index 2: " + index2);
+
+            if (index1 == -1) {
+              console.log(errorStr);
+              return;
+            }
+
+            function parseVersion(str) {
+              let pattern = /[0-9]\.[0-9][0-9.]{0,}/g;
+              return str.match(pattern);
+            }
+            function firstNum(version) {
+              return version[0].split(".")[0];
+            }
+
+            let issueVer = parseVersion(body.substring(index1 + item1.length, index2));
+
+            if (issueVer == undefined) {
+              console.log(errorStr);
+              return;
+            }
+            console.log("Version from issue: " + issueVer[0]);
+
+            let latestVer = parseVersion(process.env.LATEST_TAG);
+
+            if (latestVer == undefined) {
+              console.log(errorStr);
+              return;
+            }
+            console.log("Version from tags: " + latestVer[0]);
+
+            let issueNum = firstNum(issueVer);
+            let latestNum = firstNum(latestVer);
+
+            let macos_ver = process.env.LATEST_MACOS;
+            console.log("Telegram for MacOS version from website: " + macos_ver);
+
+            if (issueNum <= latestNum && issueNum < macos_ver) {
+              console.log("Seems the version of this issue is fine!");
+              return;
+            }
+            if (issueNum > macos_ver) {
+              let message = `Seems like it's neither the Telegram Desktop\
+              nor the Telegram for macOS version.
+              `;
+              console.log(message);
+              return;
+            }
+
+            let message = `
+            Sorry, but according to the version you specify in this issue, \
+            you are using the [Telegram for macOS](https://macos.telegram.org), \
+            not the [Telegram Desktop](https://desktop.telegram.org).
+            You can report your issue to [the group](https://t.me/macswift) \
+            or to [the repository of Telegram for macOS](https://github.com/overtake/TelegramSwift).
+
+            **If I made a mistake and closed your issue wrongly, please reopen it. Thanks!**
+            `;
+
+            let params = {
+              owner: context.issue.owner,
+              repo: context.issue.repo,
+              issue_number: context.issue.number
+            };
+
+            github.issues.createComment({
+              ...params,
+              body: message
+            });
+
+            github.issues.addLabels({
+              ...params,
+              labels: ['TG macOS Swift']
+            });
+
+            github.issues.update({
+              ...params,
+              state: 'closed'
+            });
+

.github/workflows/linux.yml

@@ -0,0 +1,614 @@
+name: Linux.
+
+on:
+  push:
+    paths-ignore:
+      - 'docs/**'
+      - '**.md'
+      - '!docs/building-cmake.md'
+      - 'changelog.txt'
+      - 'LEGAL'
+      - 'LICENSE'
+      - '.github/**'
+      - '!.github/workflows/linux.yml'
+      - 'snap/**'
+      - 'Telegram/build/**'
+      - 'Telegram/Patches/**'
+      - 'Telegram/Resources/uwp/**'
+      - 'Telegram/Resources/winrc/**'
+      - 'Telegram/SourceFiles/platform/win/**'
+      - 'Telegram/SourceFiles/platform/mac/**'
+      - 'Telegram/Telegram/**'
+      - 'Telegram/configure.bat'
+      - 'Telegram/Telegram.plist'
+  pull_request:
+    paths-ignore:
+      - 'docs/**'
+      - '**.md'
+      - '!docs/building-cmake.md'
+      - 'changelog.txt'
+      - 'LEGAL'
+      - 'LICENSE'
+      - '.github/**'
+      - '!.github/workflows/linux.yml'
+      - 'snap/**'
+      - 'Telegram/build/**'
+      - 'Telegram/Patches/**'
+      - 'Telegram/Resources/uwp/**'
+      - 'Telegram/Resources/winrc/**'
+      - 'Telegram/SourceFiles/platform/win/**'
+      - 'Telegram/SourceFiles/platform/mac/**'
+      - 'Telegram/Telegram/**'
+      - 'Telegram/configure.bat'
+      - 'Telegram/Telegram.plist'
+
+jobs:
+
+  linux:
+    name: Ubuntu 14.04
+    runs-on: ubuntu-latest
+    container: ubuntu:trusty
+
+    strategy:
+      matrix:
+        defines:
+          - ""
+          - "DESKTOP_APP_DISABLE_DBUS_INTEGRATION"
+          - "TDESKTOP_DISABLE_GTK_INTEGRATION"
+
+    env:
+      GIT: "https://github.com"
+      QT: "5_12_8"
+      QT_PREFIX: "/usr/local/desktop-app/Qt-5.12.8"
+      OPENSSL_VER: "1_1_1"
+      OPENSSL_PREFIX: "/usr/local/desktop-app/openssl-1.1.1"
+      CMAKE_VER: "3.17.0"
+      UPLOAD_ARTIFACT: "false"
+      ONLY_CACHE: "false"
+      MANUAL_CACHING: "6"
+      DOC_PATH: "docs/building-cmake.md"
+      AUTO_CACHING: "1"
+
+    steps:
+      - name: Get repository name.
+        run: echo "REPO_NAME=${GITHUB_REPOSITORY##*/}" >> $GITHUB_ENV
+
+      - name: Disable man for further package installs.
+        run: |
+          cfgFile="/etc/dpkg/dpkg.cfg.d/no_man"
+          sudo touch $cfgFile
+          p() {
+            sudo echo "path-exclude=/usr/share/$1/*" >> $cfgFile
+          }
+
+          p man
+          p locale
+          p doc
+
+      - name: Apt install.
+        shell: bash
+        run: |
+          sudo apt-get update
+          sudo apt-get install software-properties-common -y && \
+          sudo add-apt-repository ppa:git-core/ppa -y && \
+          sudo apt-get update && \
+          sudo apt-get install git libexif-dev liblzma-dev libz-dev libssl-dev \
+          libgtk2.0-dev libice-dev libsm-dev libicu-dev libdrm-dev dh-autoreconf \
+          autoconf automake build-essential libxml2-dev libass-dev libfreetype6-dev \
+          libgpac-dev libsdl1.2-dev libtheora-dev libtool libva-dev libvdpau-dev \
+          libvorbis-dev libxcb1-dev libxcb-image0-dev libxcb-shm0-dev \
+          libxcb-screensaver0-dev libjpeg-dev ninja-build \
+          libxcb-xfixes0-dev libxcb-keysyms1-dev libxcb-icccm4-dev libatspi2.0-dev \
+          libxcb-render-util0-dev libxcb-util0-dev libxcb-xkb-dev libxrender-dev \
+          libasound-dev libpulse-dev libxcb-sync0-dev libxcb-randr0-dev libegl1-mesa-dev \
+          libx11-xcb-dev libffi-dev libncurses5-dev pkg-config texi2html bison yasm \
+          zlib1g-dev xutils-dev python-xcbgen chrpath gperf wget -y --force-yes && \
+          sudo add-apt-repository ppa:ubuntu-toolchain-r/test -y && \
+          sudo apt-get update && \
+          sudo apt-get install gcc-8 g++-8 -y && \
+          sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-8 60 && \
+          sudo update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-8 60 && \
+          sudo update-alternatives --config gcc && \
+          sudo add-apt-repository --remove ppa:ubuntu-toolchain-r/test -y
+
+      - name: Clone.
+        uses: actions/checkout@v2
+        with:
+          submodules: recursive
+          path: ${{ env.REPO_NAME }}
+
+      - name: First set up.
+        shell: bash
+        run: |
+          gcc --version
+
+          gcc --version > CACHE_KEY.txt
+          echo $MANUAL_CACHING >> CACHE_KEY.txt
+          if [ "$AUTO_CACHING" == "1" ]; then
+            thisFile=$REPO_NAME/.github/workflows/linux.yml
+            echo `md5sum $thisFile | cut -c -32` >> CACHE_KEY.txt
+          fi
+          md5cache=$(md5sum CACHE_KEY.txt | cut -c -32)
+          echo "CACHE_KEY=$md5cache" >> $GITHUB_ENV
+
+          mkdir -p Libraries
+          cd Libraries
+          echo "LibrariesPath=`pwd`" >> $GITHUB_ENV
+
+      - name: Patches.
+        run: |
+          echo "Find necessary commit from doc."
+          checkoutCommit=$(grep -A 1 "cd patches" $REPO_NAME/$DOC_PATH | sed -n 2p)
+          cd $LibrariesPath
+          git clone $GIT/desktop-app/patches.git
+          cd patches
+          eval $checkoutCommit
+
+      - name: CMake.
+        run: |
+          cd $LibrariesPath
+
+          file=cmake-$CMAKE_VER-Linux-x86_64.sh
+          wget $GIT/Kitware/CMake/releases/download/v$CMAKE_VER/$file
+          sudo mkdir /opt/cmake
+          sudo sh $file --prefix=/opt/cmake --skip-license
+          sudo ln -s /opt/cmake/bin/cmake /usr/local/bin/cmake
+          rm $file
+
+          cmake --version
+
+      - name: MozJPEG.
+        run: |
+          cd $LibrariesPath
+
+          git clone -b v4.0.1-rc2 $GIT/mozilla/mozjpeg.git
+          cd mozjpeg
+          cmake -B build . \
+          -DCMAKE_BUILD_TYPE=Release \
+          -DCMAKE_INSTALL_PREFIX=/usr/local \
+          -DWITH_JPEG8=ON \
+          -DPNG_SUPPORTED=OFF
+          cmake --build build -j$(nproc)
+          sudo cmake --install build
+          cd ..
+          rm -rf mozjpeg
+
+      - name: Opus cache.
+        id: cache-opus
+        uses: actions/cache@v2
+        with:
+          path: ${{ env.LibrariesPath }}/opus
+          key: ${{ runner.OS }}-opus-${{ env.CACHE_KEY }}
+      - name: Opus.
+        if: steps.cache-opus.outputs.cache-hit != 'true'
+        run: |
+          cd $LibrariesPath
+
+          git clone -b v1.3 --depth=1 $GIT/xiph/opus
+          cd opus
+          ./autogen.sh
+          ./configure
+          make -j$(nproc)
+      - name: Opus install.
+        run: |
+          cd $LibrariesPath/opus
+          sudo make install
+
+      - name: Libva.
+        run: |
+          cd $LibrariesPath
+
+          git clone $GIT/intel/libva.git
+          cd libva
+          ./autogen.sh --enable-static
+          make -j$(nproc)
+          sudo make install
+          cd ..
+          rm -rf libva
+
+      - name: Libvdpau.
+        run: |
+          cd $LibrariesPath
+
+          git clone -b libvdpau-1.2 --depth=1 https://gitlab.freedesktop.org/vdpau/libvdpau.git
+          cd libvdpau
+          ./autogen.sh --enable-static
+          make -j$(nproc)
+          sudo make install
+          cd ..
+          rm -rf libvdpau
+
+      - name: FFmpeg cache.
+        id: cache-ffmpeg
+        uses: actions/cache@v2
+        with:
+          path: ${{ env.LibrariesPath }}/ffmpeg-cache
+          key: ${{ runner.OS }}-ffmpeg-${{ env.CACHE_KEY }}
+      - name: FFmpeg build.
+        if: steps.cache-ffmpeg.outputs.cache-hit != 'true'
+        run: |
+          cd $LibrariesPath
+
+          git clone --branch release/3.4 $GIT/FFmpeg/FFmpeg ffmpeg
+          cd ffmpeg
+          ./configure \
+          --disable-debug \
+          --disable-programs \
+          --disable-doc \
+          --disable-network \
+          --disable-autodetect \
+          --disable-everything \
+          --disable-alsa \
+          --disable-iconv \
+          --enable-libopus \
+          --enable-vaapi \
+          --enable-vdpau \
+          --enable-protocol=file \
+          --enable-hwaccel=h264_vaapi \
+          --enable-hwaccel=h264_vdpau \
+          --enable-hwaccel=mpeg4_vaapi \
+          --enable-hwaccel=mpeg4_vdpau \
+          --enable-decoder=aac \
+          --enable-decoder=aac_fixed \
+          --enable-decoder=aac_latm \
+          --enable-decoder=aasc \
+          --enable-decoder=alac \
+          --enable-decoder=flac \
+          --enable-decoder=gif \
+          --enable-decoder=h264 \
+          --enable-decoder=h264_vdpau \
+          --enable-decoder=hevc \
+          --enable-decoder=mp1 \
+          --enable-decoder=mp1float \
+          --enable-decoder=mp2 \
+          --enable-decoder=mp2float \
+          --enable-decoder=mp3 \
+          --enable-decoder=mp3adu \
+          --enable-decoder=mp3adufloat \
+          --enable-decoder=mp3float \
+          --enable-decoder=mp3on4 \
+          --enable-decoder=mp3on4float \
+          --enable-decoder=mpeg4 \
+          --enable-decoder=mpeg4_vdpau \
+          --enable-decoder=msmpeg4v2 \
+          --enable-decoder=msmpeg4v3 \
+          --enable-decoder=opus \
+          --enable-decoder=pcm_alaw \
+          --enable-decoder=pcm_f32be \
+          --enable-decoder=pcm_f32le \
+          --enable-decoder=pcm_f64be \
+          --enable-decoder=pcm_f64le \
+          --enable-decoder=pcm_lxf \
+          --enable-decoder=pcm_mulaw \
+          --enable-decoder=pcm_s16be \
+          --enable-decoder=pcm_s16be_planar \
+          --enable-decoder=pcm_s16le \
+          --enable-decoder=pcm_s16le_planar \
+          --enable-decoder=pcm_s24be \
+          --enable-decoder=pcm_s24daud \
+          --enable-decoder=pcm_s24le \
+          --enable-decoder=pcm_s24le_planar \
+          --enable-decoder=pcm_s32be \
+          --enable-decoder=pcm_s32le \
+          --enable-decoder=pcm_s32le_planar \
+          --enable-decoder=pcm_s64be \
+          --enable-decoder=pcm_s64le \
+          --enable-decoder=pcm_s8 \
+          --enable-decoder=pcm_s8_planar \
+          --enable-decoder=pcm_u16be \
+          --enable-decoder=pcm_u16le \
+          --enable-decoder=pcm_u24be \
+          --enable-decoder=pcm_u24le \
+          --enable-decoder=pcm_u32be \
+          --enable-decoder=pcm_u32le \
+          --enable-decoder=pcm_u8 \
+          --enable-decoder=pcm_zork \
+          --enable-decoder=vorbis \
+          --enable-decoder=wavpack \
+          --enable-decoder=wmalossless \
+          --enable-decoder=wmapro \
+          --enable-decoder=wmav1 \
+          --enable-decoder=wmav2 \
+          --enable-decoder=wmavoice \
+          --enable-encoder=libopus \
+          --enable-parser=aac \
+          --enable-parser=aac_latm \
+          --enable-parser=flac \
+          --enable-parser=h264 \
+          --enable-parser=hevc \
+          --enable-parser=mpeg4video \
+          --enable-parser=mpegaudio \
+          --enable-parser=opus \
+          --enable-parser=vorbis \
+          --enable-demuxer=aac \
+          --enable-demuxer=flac \
+          --enable-demuxer=gif \
+          --enable-demuxer=h264 \
+          --enable-demuxer=hevc \
+          --enable-demuxer=m4v \
+          --enable-demuxer=mov \
+          --enable-demuxer=mp3 \
+          --enable-demuxer=ogg \
+          --enable-demuxer=wav \
+          --enable-muxer=ogg \
+          --enable-muxer=opus
+
+          make -j$(nproc)
+          sudo make DESTDIR="$LibrariesPath/ffmpeg-cache" install
+          cd ..
+          rm -rf ffmpeg
+      - name: FFmpeg install.
+        run: |
+          cd $LibrariesPath
+          #List of files from cmake/external/ffmpeg/CMakeLists.txt.
+          copyLib() {
+            mkdir -p ffmpeg/$1
+            yes | cp -i ffmpeg-cache/usr/local/lib/$1.a ffmpeg/$1/$1.a
+          }
+          copyLib libavformat
+          copyLib libavcodec
+          copyLib libswresample
+          copyLib libswscale
+          copyLib libavutil
+
+          sudo cp -R ffmpeg-cache/. /
+
+      - name: OpenAL Soft.
+        run: |
+          cd $LibrariesPath
+
+          git clone -b openal-soft-1.20.1 --depth=1 $GIT/kcat/openal-soft.git
+          cd openal-soft/build
+          cmake .. \
+          -DCMAKE_BUILD_TYPE=Release \
+          -DLIBTYPE:STRING=STATIC \
+          -DALSOFT_EXAMPLES=OFF \
+          -DALSOFT_TESTS=OFF \
+          -DALSOFT_UTILS=OFF \
+          -DALSOFT_CONFIG=OFF
+          make -j$(nproc)
+          sudo make install
+          cd -
+          rm -rf openal-soft
+
+      - name: OpenSSL cache.
+        id: cache-openssl
+        uses: actions/cache@v2
+        with:
+          path: ${{ env.LibrariesPath }}/openssl-cache
+          key: ${{ runner.OS }}-${{ env.OPENSSL_VER }}-${{ env.CACHE_KEY }}
+      - name: OpenSSL build.
+        if: steps.cache-openssl.outputs.cache-hit != 'true'
+        run: |
+          cd $LibrariesPath
+
+          opensslDir=openssl_${OPENSSL_VER}
+          git clone -b OpenSSL_${OPENSSL_VER}-stable --depth=1 \
+            $GIT/openssl/openssl $opensslDir
+          cd $opensslDir
+          ./config --prefix="$OPENSSL_PREFIX" no-tests
+          make -j$(nproc)
+          sudo make DESTDIR="$LibrariesPath/openssl-cache" install_sw
+          cd ..
+          # rm -rf $opensslDir # Keep this folder for WebRTC.
+      - name: OpenSSL install.
+        run: |
+          cd $LibrariesPath
+          sudo cp -R openssl-cache/. /
+
+      - name: Libwayland.
+        run: |
+          cd $LibrariesPath
+
+          git clone -b 1.18.0 https://gitlab.freedesktop.org/wayland/wayland
+          cd wayland
+          ./autogen.sh \
+          --enable-static \
+          --disable-documentation \
+          --disable-dtd-validation
+          make -j$(nproc)
+          sudo make install
+          cd ..
+          rm -rf wayland
+
+      - name: Libxkbcommon.
+        run: |
+          cd $LibrariesPath
+
+          git clone -b xkbcommon-0.8.4 --depth=1 $GIT/xkbcommon/libxkbcommon.git
+          cd libxkbcommon
+          ./autogen.sh \
+          --disable-docs \
+          --disable-wayland \
+          --with-xkb-config-root=/usr/share/X11/xkb \
+          --with-x-locale-root=/usr/share/X11/locale
+          make -j$(nproc)
+          sudo make install
+          cd ..
+          rm -rf libxkbcommon
+
+      - name: Qt 5.12.8 cache.
+        id: cache-qt
+        uses: actions/cache@v2
+        with:
+          path: ${{ env.LibrariesPath }}/qt-cache
+          key: ${{ runner.OS }}-qt-${{ env.CACHE_KEY }}-${{ hashFiles('**/qt*_5_12_8/*') }}
+      - name: Qt 5.12.8 build.
+        if: steps.cache-qt.outputs.cache-hit != 'true'
+        run: |
+          cd $LibrariesPath
+
+          git clone -b v5.12.8 --depth=1 git://code.qt.io/qt/qt5.git qt_${QT}
+          cd qt_${QT}
+          perl init-repository --module-subset=qtbase,qtwayland,qtimageformats,qtsvg
+          git submodule update qtbase qtwayland qtimageformats qtsvg
+          cd qtbase
+          find ../../patches/qtbase_${QT} -type f -print0 | sort -z | xargs -r0 git apply
+          cd ..
+          cd qtwayland
+          find ../../patches/qtwayland_${QT} -type f -print0 | sort -z | xargs -r0 git apply
+          cd ..
+
+          ./configure -prefix "$QT_PREFIX" \
+          -release \
+          -opensource \
+          -confirm-license \
+          -qt-zlib \
+          -qt-libpng \
+          -qt-harfbuzz \
+          -qt-pcre \
+          -qt-xcb \
+          -no-icu \
+          -no-gtk \
+          -static \
+          -dbus-runtime \
+          -openssl-linked \
+          -I "$OPENSSL_PREFIX/include" OPENSSL_LIBS="$OPENSSL_PREFIX/lib/libssl.a $OPENSSL_PREFIX/lib/libcrypto.a -ldl -lpthread" \
+          -nomake examples \
+          -nomake tests
+
+          make -j$(nproc)
+          sudo make INSTALL_ROOT="$LibrariesPath/qt-cache" install
+          cd ..
+          rm -rf qt_${QT}
+      - name: Qt 5.12.8 install.
+        run: |
+          cd $LibrariesPath
+          sudo cp -R qt-cache/. /
+
+      - name: Breakpad cache.
+        id: cache-breakpad
+        uses: actions/cache@v2
+        with:
+          path: ${{ env.LibrariesPath }}/breakpad-cache
+          key: ${{ runner.OS }}-breakpad-${{ env.CACHE_KEY }}
+      - name: Breakpad clone.
+        run: |
+          cd $LibrariesPath
+
+          git clone https://chromium.googlesource.com/breakpad/breakpad
+          cd breakpad
+          git checkout bc8fb886
+          git clone https://chromium.googlesource.com/linux-syscall-support src/third_party/lss
+          cd src/third_party/lss
+          git checkout a91633d1
+      - name: Breakpad build.
+        if: steps.cache-breakpad.outputs.cache-hit != 'true'
+        run: |
+          cd $LibrariesPath
+
+          BreakpadCache=$LibrariesPath/breakpad-cache
+
+          git clone https://chromium.googlesource.com/external/gyp
+          cd gyp
+          git checkout 9f2a7bb1
+          git apply ../patches/gyp.diff
+          cd ..
+
+          cd breakpad
+          ./configure
+          make -j$(nproc)
+          sudo make DESTDIR="$BreakpadCache" install
+          cd src
+          rm -r testing
+          git clone $GIT/google/googletest testing
+          cd tools
+          sed -i 's/minidump_upload.m/minidump_upload.cc/' linux/tools_linux.gypi
+          ../../../gyp/gyp  --depth=. --generator-output=.. -Goutput_dir=../out tools.gyp --format=cmake
+          cd ../../out/Default
+          cmake .
+          make -j$(nproc) dump_syms
+
+          mv dump_syms $BreakpadCache/
+          cd ..
+          rm -rf gyp breakpad
+      - name: Breakpad install.
+        run: |
+          cd $LibrariesPath
+          sudo cp -R breakpad-cache/. /
+          mkdir -p breakpad/out/Default/
+          cp breakpad-cache/dump_syms breakpad/out/Default/dump_syms
+
+      - name: WebRTC cache.
+        id: cache-webrtc
+        uses: actions/cache@v2
+        with:
+          path: ${{ env.LibrariesPath }}/tg_owt
+          key: ${{ runner.OS }}-webrtc-${{ env.CACHE_KEY }}
+      - name: WebRTC.
+        if: steps.cache-webrtc.outputs.cache-hit != 'true'
+        run: |
+          cd $LibrariesPath
+
+          git clone $GIT/desktop-app/tg_owt.git
+          mkdir -p tg_owt/out/Debug
+          cd tg_owt/out/Debug
+          cmake -G Ninja \
+          -DCMAKE_BUILD_TYPE=Debug \
+          -DTG_OWT_SPECIAL_TARGET=linux \
+          -DTG_OWT_LIBJPEG_INCLUDE_PATH=/usr/local/include \
+          -DTG_OWT_OPENSSL_INCLUDE_PATH=$OPENSSL_PREFIX/include \
+          -DTG_OWT_OPUS_INCLUDE_PATH=/usr/local/include/opus \
+          -DTG_OWT_FFMPEG_INCLUDE_PATH=/usr/local/include \
+          ../..
+          ninja
+
+          # Cleanup.
+          cd $LibrariesPath/tg_owt
+          mv out/Debug/libtg_owt.a libtg_owt.a
+          rm -rf out
+          mkdir -p out/Debug
+          mv libtg_owt.a out/Debug/libtg_owt.a
+
+          rm -rf $LibrariesPath/openssl_${OPENSSL_VER}
+
+      - name: Telegram Desktop build.
+        if: env.ONLY_CACHE == 'false'
+        run: |
+          cd $REPO_NAME/Telegram
+
+          DEFINE=""
+          if [ -n "${{ matrix.defines }}" ]; then
+            DEFINE="-D ${{ matrix.defines }}=ON"
+            echo Define from matrix: $DEFINE
+            echo "ARTIFACT_NAME=Telegram_${{ matrix.defines }}" >> $GITHUB_ENV
+          else
+            echo "ARTIFACT_NAME=Telegram" >> $GITHUB_ENV
+          fi
+
+          ./configure.sh \
+          -D CMAKE_CXX_FLAGS="-s" \
+          -D TDESKTOP_API_TEST=ON \
+          -D DESKTOP_APP_USE_PACKAGED=OFF \
+          -D DESKTOP_APP_DISABLE_CRASH_REPORTS=OFF \
+          $DEFINE
+
+          cd ../out/Debug
+          make -j$(nproc)
+
+      - name: Check.
+        if: env.ONLY_CACHE == 'false'
+        run: |
+          filePath="$REPO_NAME/out/Debug/bin/Telegram"
+          if test -f "$filePath"; then
+            echo "Build successfully done! :)"
+
+            size=$(stat -c %s "$filePath")
+            echo "File size of ${filePath}: ${size} Bytes."
+          else
+            echo "Build error, output file does not exist."
+            exit 1
+          fi
+
+      - name: Move artifact.
+        if: env.UPLOAD_ARTIFACT == 'true'
+        run: |
+          cd $REPO_NAME/out/Debug/bin
+          mkdir artifact
+          mv Telegram artifact/
+      - uses: actions/upload-artifact@master
+        if: env.UPLOAD_ARTIFACT == 'true'
+        name: Upload artifact.
+        with:
+          name: ${{ env.ARTIFACT_NAME }}
+          path: ${{ env.REPO_NAME }}/out/Debug/bin/artifact/

.github/workflows/mac.yml

@@ -0,0 +1,538 @@
+name: MacOS.
+
+on:
+  push:
+    paths-ignore:
+      - 'docs/**'
+      - '**.md'
+      - '!docs/building-xcode.md'
+      - 'changelog.txt'
+      - 'LEGAL'
+      - 'LICENSE'
+      - '.github/**'
+      - '!.github/workflows/mac.yml'
+      - 'lib/xdg/**'
+      - 'snap/**'
+      - 'Telegram/build/**'
+      - 'Telegram/Patches/**'
+      - 'Telegram/Resources/uwp/**'
+      - 'Telegram/Resources/winrc/**'
+      - 'Telegram/SourceFiles/platform/win/**'
+      - 'Telegram/SourceFiles/platform/linux/**'
+      - 'Telegram/configure.bat'
+  pull_request:
+    paths-ignore:
+      - 'docs/**'
+      - '**.md'
+      - '!docs/building-xcode.md'
+      - 'changelog.txt'
+      - 'LEGAL'
+      - 'LICENSE'
+      - '.github/**'
+      - '!.github/workflows/mac.yml'
+      - 'lib/xdg/**'
+      - 'snap/**'
+      - 'Telegram/build/**'
+      - 'Telegram/Patches/**'
+      - 'Telegram/Resources/uwp/**'
+      - 'Telegram/Resources/winrc/**'
+      - 'Telegram/SourceFiles/platform/win/**'
+      - 'Telegram/SourceFiles/platform/linux/**'
+      - 'Telegram/configure.bat'
+
+jobs:
+
+  macos:
+    name: MacOS
+    runs-on: macos-latest
+
+    strategy:
+      matrix:
+        defines:
+          - ""
+    env:
+      MIN_MAC: "-mmacosx-version-min=10.12"
+      UNGUARDED: "-Werror=unguarded-availability-new"
+      GIT: "https://github.com"
+      PREFIX: "/usr/local/macos"
+      MACOSX_DEPLOYMENT_TARGET: "10.12"
+      XZ: "xz-5.2.4"
+      QT: "5_12_8"
+      OPENSSL_VER: "1_1_1"
+      QT_PREFIX: "/usr/local/desktop-app/Qt-5.12.8"
+      LIBICONV_VER: "libiconv-1.16"
+      UPLOAD_ARTIFACT: "false"
+      ONLY_CACHE: "false"
+      MANUAL_CACHING: "2"
+      DOC_PATH: "docs/building-xcode.md"
+      AUTO_CACHING: "1"
+
+    steps:
+      - name: Get repository name.
+        run: echo "REPO_NAME=${GITHUB_REPOSITORY##*/}" >> $GITHUB_ENV
+
+      - name: Clone.
+        uses: actions/checkout@v2
+        with:
+          submodules: recursive
+          path: ${{ env.REPO_NAME }}
+
+      - name: First set up.
+        run: |
+          sudo chown -R `whoami`:admin /usr/local/share
+          brew install automake fdk-aac lame libass libtool libvorbis libvpx \
+          ninja opus sdl shtool texi2html theora x264 xvid yasm pkg-config
+
+          sudo xcode-select -s /Applications/Xcode.app/Contents/Developer
+
+          xcodebuild -version > CACHE_KEY.txt
+          echo $MIN_MAC >> CACHE_KEY.txt
+          echo $PREFIX >> CACHE_KEY.txt
+          echo $MANUAL_CACHING >> CACHE_KEY.txt
+          echo "$GITHUB_WORKSPACE" >> CACHE_KEY.txt
+          if [ "$AUTO_CACHING" == "1" ]; then
+            thisFile=$REPO_NAME/.github/workflows/mac.yml
+            echo `md5 -q $thisFile` >> CACHE_KEY.txt
+          fi
+          echo "CACHE_KEY=`md5 -q CACHE_KEY.txt`" >> $GITHUB_ENV
+
+          echo "$PWD/Libraries/depot_tools" >> $GITHUB_PATH
+
+          mkdir -p Libraries/macos
+          cd Libraries/macos
+          echo "LibrariesPath=`pwd`" >> $GITHUB_ENV
+
+      - name: Patches.
+        run: |
+          echo "Find necessary commit from doc."
+          checkoutCommit=$(grep -A 1 "cd patches" $REPO_NAME/$DOC_PATH | sed -n 2p)
+          cd $LibrariesPath
+          git clone $GIT/desktop-app/patches.git
+          cd Patches
+          eval $checkoutCommit
+
+      - name: XZ.
+        run: |
+          cd $LibrariesPath
+
+          wget https://tukaani.org/xz/$XZ.tar.gz
+          tar -xvzf $XZ.tar.gz
+          cd $XZ
+          CFLAGS="$MIN_MAC" LDFLAGS="$MIN_MAC" ./configure --prefix=$PREFIX
+          make -j$(nproc)
+          sudo make install
+
+      - name: Zlib.
+        run: |
+          cd $LibrariesPath
+
+          git clone $GIT/desktop-app/zlib.git
+          cd zlib
+          CFLAGS="$MIN_MAC $UNGUARDED" LDFLAGS="$MIN_MAC" ./configure --prefix=$PREFIX
+          make -j$(nproc)
+          sudo make install
+
+      - name: MozJPEG.
+        run: |
+          cd $LibrariesPath
+
+          git clone -b v4.0.1-rc2 $GIT/mozilla/mozjpeg.git
+          cd mozjpeg
+          cmake -B build . \
+          -DCMAKE_BUILD_TYPE=Release \
+          -DCMAKE_INSTALL_PREFIX=/usr/local/macos \
+          -DWITH_JPEG8=ON \
+          -DPNG_SUPPORTED=OFF
+          cmake --build build -j$(nproc)
+          sudo cmake --install build
+
+      - name: OpenSSL cache.
+        id: cache-openssl
+        uses: actions/cache@v2
+        with:
+          path: ${{ env.LibrariesPath }}/openssl_${{ env.OPENSSL_VER }}
+          key: ${{ runner.OS }}-${{ env.OPENSSL_VER }}-${{ env.CACHE_KEY }}
+      - name: OpenSSL.
+        if: steps.cache-openssl.outputs.cache-hit != 'true'
+        run: |
+          cd $LibrariesPath
+
+          git clone $GIT/openssl/openssl openssl
+          cd openssl
+          git checkout OpenSSL_"$OPENSSL_VER"-stable
+          ./Configure \
+          --prefix=$PREFIX \
+          no-tests \
+          darwin64-x86_64-cc \
+          -static \
+          $MIN_MAC
+          make build_libs -j$(nproc)
+
+          SSL_DIR=$LibrariesPath/openssl_$OPENSSL_VER
+          mkdir -p $SSL_DIR/include
+          copyLib() {
+            cp $1.a $SSL_DIR/$1.a
+          }
+          copyLib libssl
+          copyLib libcrypto
+          sudo cp -R include/. $SSL_DIR/include/
+
+      - name: Opus cache.
+        id: cache-opus
+        uses: actions/cache@v2
+        with:
+          path: ${{ env.LibrariesPath }}/opus-cache
+          key: ${{ runner.OS }}-opus-${{ env.CACHE_KEY }}
+      - name: Opus.
+        if: steps.cache-opus.outputs.cache-hit != 'true'
+        run: |
+          cd $LibrariesPath
+
+          git clone $GIT/xiph/opus
+          cd opus
+          git checkout v1.3
+          ./autogen.sh
+          CFLAGS="$MIN_MAC $UNGUARDED" CPPFLAGS="$MIN_MAC $UNGUARDED" LDFLAGS="$MIN_MAC" ./configure --prefix=$PREFIX
+          make -j$(nproc)
+          sudo make DESTDIR="$LibrariesPath/opus-cache" install
+      - name: Opus install.
+        run: |
+          cd $LibrariesPath
+          sudo cp -R opus-cache/. /
+
+      - name: Libiconv cache.
+        id: cache-libiconv
+        uses: actions/cache@v2
+        with:
+          path: ${{ env.LibrariesPath }}/libiconv-cache
+          key: ${{ runner.OS }}-${{ env.LIBICONV_VER }}-${{ env.CACHE_KEY }}
+      - name: Libiconv.
+        if: steps.cache-libiconv.outputs.cache-hit != 'true'
+        run: |
+          cd $LibrariesPath
+
+          wget https://ftp.gnu.org/pub/gnu/libiconv/"$LIBICONV_VER".tar.gz
+          tar -xvzf "$LIBICONV_VER".tar.gz
+          cd $LIBICONV_VER
+          CFLAGS="$MIN_MAC $UNGUARDED" CPPFLAGS="$MIN_MAC $UNGUARDED" LDFLAGS="$MIN_MAC" ./configure --enable-static --prefix=$PREFIX
+          make -j$(nproc)
+          sudo make DESTDIR="$LibrariesPath/libiconv-cache" install
+      - name: Libiconv install.
+        run: |
+          cd $LibrariesPath
+          sudo cp -R libiconv-cache/. /
+
+      - name: FFmpeg cache.
+        id: cache-ffmpeg
+        uses: actions/cache@v2
+        with:
+          path: ${{ env.LibrariesPath }}/ffmpeg-cache
+          key: ${{ runner.OS }}-ffmpeg-${{ env.CACHE_KEY }}
+      - name: FFmpeg.
+        if: steps.cache-ffmpeg.outputs.cache-hit != 'true'
+        run: |
+          cd $LibrariesPath
+
+          git clone $GIT/FFmpeg/FFmpeg.git ffmpeg
+          cd ffmpeg
+          git checkout release/3.4
+          CFLAGS=`freetype-config --cflags`
+          LDFLAGS=`freetype-config --libs`
+          PKG_CONFIG_PATH=$PKG_CONFIG_PATH:/usr/local/lib/pkgconfig:/usr/lib/pkgconfig:/usr/X11/lib/pkgconfig
+
+          ./configure --prefix=$LibrariesPath/ffmpeg-cache \
+          --extra-cflags="$MIN_MAC $UNGUARDED" \
+          --extra-cxxflags="$MIN_MAC $UNGUARDED" \
+          --extra-ldflags="$MIN_MAC" \
+          --enable-protocol=file --enable-libopus \
+          --disable-programs \
+          --disable-doc \
+          --disable-network \
+          --disable-everything \
+          --enable-hwaccel=h264_videotoolbox \
+          --enable-hwaccel=hevc_videotoolbox \
+          --enable-hwaccel=mpeg1_videotoolbox \
+          --enable-hwaccel=mpeg2_videotoolbox \
+          --enable-hwaccel=mpeg4_videotoolbox \
+          --enable-decoder=aac \
+          --enable-decoder=aac_at \
+          --enable-decoder=aac_fixed \
+          --enable-decoder=aac_latm \
+          --enable-decoder=aasc \
+          --enable-decoder=alac \
+          --enable-decoder=alac_at \
+          --enable-decoder=flac \
+          --enable-decoder=gif \
+          --enable-decoder=h264 \
+          --enable-decoder=hevc \
+          --enable-decoder=mp1 \
+          --enable-decoder=mp1float \
+          --enable-decoder=mp2 \
+          --enable-decoder=mp2float \
+          --enable-decoder=mp3 \
+          --enable-decoder=mp3adu \
+          --enable-decoder=mp3adufloat \
+          --enable-decoder=mp3float \
+          --enable-decoder=mp3on4 \
+          --enable-decoder=mp3on4float \
+          --enable-decoder=mpeg4 \
+          --enable-decoder=msmpeg4v2 \
+          --enable-decoder=msmpeg4v3 \
+          --enable-decoder=opus \
+          --enable-decoder=pcm_alaw \
+          --enable-decoder=pcm_alaw_at \
+          --enable-decoder=pcm_f32be \
+          --enable-decoder=pcm_f32le \
+          --enable-decoder=pcm_f64be \
+          --enable-decoder=pcm_f64le \
+          --enable-decoder=pcm_lxf \
+          --enable-decoder=pcm_mulaw \
+          --enable-decoder=pcm_mulaw_at \
+          --enable-decoder=pcm_s16be \
+          --enable-decoder=pcm_s16be_planar \
+          --enable-decoder=pcm_s16le \
+          --enable-decoder=pcm_s16le_planar \
+          --enable-decoder=pcm_s24be \
+          --enable-decoder=pcm_s24daud \
+          --enable-decoder=pcm_s24le \
+          --enable-decoder=pcm_s24le_planar \
+          --enable-decoder=pcm_s32be \
+          --enable-decoder=pcm_s32le \
+          --enable-decoder=pcm_s32le_planar \
+          --enable-decoder=pcm_s64be \
+          --enable-decoder=pcm_s64le \
+          --enable-decoder=pcm_s8 \
+          --enable-decoder=pcm_s8_planar \
+          --enable-decoder=pcm_u16be \
+          --enable-decoder=pcm_u16le \
+          --enable-decoder=pcm_u24be \
+          --enable-decoder=pcm_u24le \
+          --enable-decoder=pcm_u32be \
+          --enable-decoder=pcm_u32le \
+          --enable-decoder=pcm_u8 \
+          --enable-decoder=pcm_zork \
+          --enable-decoder=vorbis \
+          --enable-decoder=wavpack \
+          --enable-decoder=wmalossless \
+          --enable-decoder=wmapro \
+          --enable-decoder=wmav1 \
+          --enable-decoder=wmav2 \
+          --enable-decoder=wmavoice \
+          --enable-encoder=libopus \
+          --enable-parser=aac \
+          --enable-parser=aac_latm \
+          --enable-parser=flac \
+          --enable-parser=h264 \
+          --enable-parser=hevc \
+          --enable-parser=mpeg4video \
+          --enable-parser=mpegaudio \
+          --enable-parser=opus \
+          --enable-parser=vorbis \
+          --enable-demuxer=aac \
+          --enable-demuxer=flac \
+          --enable-demuxer=gif \
+          --enable-demuxer=h264 \
+          --enable-demuxer=hevc \
+          --enable-demuxer=m4v \
+          --enable-demuxer=mov \
+          --enable-demuxer=mp3 \
+          --enable-demuxer=ogg \
+          --enable-demuxer=wav \
+          --enable-muxer=ogg \
+          --enable-muxer=opus
+
+          make -j$(nproc)
+          sudo make install
+      - name: FFmpeg install.
+        run: |
+          cd $LibrariesPath
+          #List of files from cmake/external/ffmpeg/CMakeLists.txt.
+          copyLib() {
+            mkdir -p ffmpeg/$1
+            \cp -fR ffmpeg-cache/lib/$1.a ffmpeg/$1/$1.a
+          }
+          copyLib libavformat
+          copyLib libavcodec
+          copyLib libswresample
+          copyLib libswscale
+          copyLib libavutil
+
+          sudo cp -R ffmpeg-cache/. /usr/local/
+          sudo cp -R ffmpeg-cache/include/. ffmpeg/
+
+      - name: OpenAL Soft.
+        run: |
+          cd $LibrariesPath
+
+          git clone $GIT/kcat/openal-soft.git
+          cd openal-soft
+          git checkout openal-soft-1.19.1
+          cd build
+
+          CFLAGS="$UNGUARDED" CPPFLAGS="$UNGUARDED" cmake \
+          -D CMAKE_INSTALL_PREFIX:PATH=$PREFIX \
+          -D ALSOFT_EXAMPLES=OFF \
+          -D LIBTYPE:STRING=STATIC \
+          -D CMAKE_OSX_DEPLOYMENT_TARGET:STRING=$MACOSX_DEPLOYMENT_TARGET ..
+
+          make -j$(nproc)
+          sudo make install
+
+      - name: Crashpad cache.
+        id: cache-crashpad
+        uses: actions/cache@v2
+        with:
+          path: ${{ env.LibrariesPath }}/crashpad
+          key: ${{ runner.OS }}-crashpad-${{ env.CACHE_KEY }}-${{ hashFiles('**/crashpad.diff') }}-${{ hashFiles('**/mini_chromium.diff') }}
+      - name: Crashpad.
+        if: steps.cache-crashpad.outputs.cache-hit != 'true'
+        run: |
+          cd Libraries
+          echo Install GYP for Crashpad.
+          git clone https://chromium.googlesource.com/external/gyp
+          git clone https://chromium.googlesource.com/chromium/tools/depot_tools.git
+          cd gyp
+          git checkout 9f2a7bb1
+          git apply $LibrariesPath/patches/gyp.diff
+          ./setup.py build
+          sudo ./setup.py install
+
+          cd $LibrariesPath
+
+          git clone https://chromium.googlesource.com/crashpad/crashpad.git
+          cd crashpad
+          git checkout feb3aa3923
+          git apply ../patches/crashpad.diff
+          cd third_party/mini_chromium
+          git clone https://chromium.googlesource.com/chromium/mini_chromium
+          cd mini_chromium
+          git checkout 7c5b0c1ab4
+          git apply ../../../../patches/mini_chromium.diff
+          cd ../../gtest
+          git clone https://chromium.googlesource.com/external/github.com/google/googletest gtest
+          cd gtest
+          git checkout d62d6c6556
+          cd ../../..
+
+          build/gyp_crashpad.py -Dmac_deployment_target=10.10
+          ninja -C out/Debug
+
+      - name: Qt 5.12.8 cache.
+        id: cache-qt
+        uses: actions/cache@v2
+        with:
+          path: ${{ env.LibrariesPath }}/qt-cache
+          key: ${{ runner.OS }}-qt-${{ env.CACHE_KEY }}-${{ hashFiles('**/qtbase_5_12_8/*') }}
+      - name: Use cached Qt 5.12.8.
+        if: steps.cache-qt.outputs.cache-hit == 'true'
+        run: |
+          cd $LibrariesPath
+          mv qt-cache Qt-5.12.8
+          sudo mkdir -p $QT_PREFIX
+          sudo mv -f Qt-5.12.8 "$(dirname "$QT_PREFIX")"/
+      - name: Qt 5.12.8 build.
+        if: steps.cache-qt.outputs.cache-hit != 'true'
+        run: |
+          cd $LibrariesPath
+
+          git clone git://code.qt.io/qt/qt5.git qt_$QT
+          cd qt_$QT
+          perl init-repository --module-subset=qtbase,qtimageformats
+          git checkout v5.12.8
+          git submodule update qtbase
+          git submodule update qtimageformats
+          cd qtbase
+          find ../../patches/qtbase_$QT -type f -print0 | sort -z | xargs -0 git apply
+          cd ..
+
+          ./configure \
+          -prefix "$QT_PREFIX" \
+          -debug \
+          -force-debug-info \
+          -opensource \
+          -confirm-license \
+          -static \
+          -opengl desktop \
+          -no-openssl \
+          -securetransport \
+          -nomake examples \
+          -nomake tests \
+          -platform macx-clang \
+          -I "/usr/local/macos/include" \
+          LIBJPEG_LIBS="/usr/local/macos/lib/libjpeg.a" \
+          ZLIB_LIBS="/usr/local/macos/lib/libz.a"
+
+          make -j$(nproc)
+          sudo make install
+
+          make clean
+          cp -r $QT_PREFIX $LibrariesPath/qt-cache
+
+      - name: WebRTC cache.
+        id: cache-webrtc
+        uses: actions/cache@v2
+        with:
+          path: ${{ env.LibrariesPath }}/tg_owt
+          key: ${{ runner.OS }}-webrtc-${{ env.CACHE_KEY }}
+      - name: WebRTC.
+        if: steps.cache-webrtc.outputs.cache-hit != 'true'
+        run: |
+          cd $LibrariesPath
+
+          git clone $GIT/desktop-app/tg_owt.git
+          mkdir -p tg_owt/out/Debug
+          cd tg_owt/out/Debug
+          cmake -G Ninja -DCMAKE_BUILD_TYPE=Debug \
+          -DTG_OWT_SPECIAL_TARGET=mac \
+          -DTG_OWT_LIBJPEG_INCLUDE_PATH=/usr/local/macos/include \
+          -DTG_OWT_OPENSSL_INCLUDE_PATH=`pwd`/../../../openssl_$OPENSSL_VER/include \
+          -DTG_OWT_OPUS_INCLUDE_PATH=$PREFIX/include/opus \
+          -DTG_OWT_FFMPEG_INCLUDE_PATH=/usr/local/include \
+          ../..
+          ninja
+
+          # Cleanup.
+          cd $LibrariesPath/tg_owt
+          mv out/Debug/libtg_owt.a libtg_owt.a
+          rm -rf out
+          mkdir -p out/Debug
+          mv libtg_owt.a out/Debug/libtg_owt.a
+
+      - name: Telegram Desktop build.
+        if: env.ONLY_CACHE == 'false'
+        run: |
+          cd $REPO_NAME/Telegram
+
+          DEFINE=""
+          if [ -n "${{ matrix.defines }}" ]; then
+            DEFINE="-D ${{ matrix.defines }}=ON"
+            echo Define from matrix: $DEFINE
+            echo "ARTIFACT_NAME=Telegram_${{ matrix.defines }}" >> $GITHUB_ENV
+          else
+            echo "ARTIFACT_NAME=Telegram" >> $GITHUB_ENV
+          fi
+
+          ./configure.sh \
+          -D TDESKTOP_API_TEST=ON \
+          -D DESKTOP_APP_USE_PACKAGED=OFF \
+          -D DESKTOP_APP_DISABLE_CRASH_REPORTS=OFF \
+          $DEFINE
+
+          cd ../out
+
+          xcoderun='xcodebuild build -project Telegram.xcodeproj -scheme Telegram -destination "platform=macOS,arch=x86_64" -configuration Debug'
+          bash -c "$xcoderun" || bash -c "$xcoderun" || bash -c "$xcoderun"
+
+      - name: Move artifact.
+        if: env.UPLOAD_ARTIFACT == 'true'
+        run: |
+          cd $REPO_NAME/out/Debug
+          mkdir artifact
+          mv Telegram.app artifact/
+          mv Updater artifact/
+      - uses: actions/upload-artifact@master
+        if: env.UPLOAD_ARTIFACT == 'true'
+        name: Upload artifact.
+        with:
+          name: ${{ env.ARTIFACT_NAME }}
+          path: ${{ env.REPO_NAME }}/out/Debug/artifact/

.github/workflows/master_updater.yml

@@ -0,0 +1,35 @@
+name: Master branch updater.
+
+on:
+  release:
+    types: released
+
+jobs:
+  updater:
+    runs-on: ubuntu-latest
+    env:
+      SKIP: "0"
+      to_branch: "master"
+    steps:
+      - uses: actions/checkout@v1
+        if: env.SKIP == '0'
+      - name: Push the code to the master branch.
+        if: env.SKIP == '0'
+        run: |
+          token=${{ secrets.TOKEN_FOR_MASTER_UPDATER }}
+          if [ -z "${token}" ]; then
+              echo "Token is unset. Nothing to do."
+              exit 0
+          fi
+
+          url=https://x-access-token:$token@github.com/$GITHUB_REPOSITORY
+          latest_tag=$(git describe --tags --abbrev=0)
+          echo "Latest tag: $latest_tag"
+
+          git remote set-url origin $url
+          git remote -v
+          git checkout master
+          git merge $latest_tag
+
+          git push origin HEAD:refs/heads/$to_branch
+          echo "Done!"

.github/workflows/snap.yml

@@ -0,0 +1,89 @@
+name: Snap.
+
+on:
+  push:
+    paths-ignore:
+      - 'docs/**'
+      - '**.md'
+      - 'changelog.txt'
+      - 'LEGAL'
+      - 'LICENSE'
+      - '.github/**'
+      - '!.github/workflows/snap.yml'
+      - 'Telegram/build/**'
+      - 'Telegram/Patches/**'
+      - 'Telegram/Resources/uwp/**'
+      - 'Telegram/Resources/winrc/**'
+      - 'Telegram/SourceFiles/platform/win/**'
+      - 'Telegram/SourceFiles/platform/mac/**'
+      - 'Telegram/Telegram/**'
+      - 'Telegram/configure.bat'
+      - 'Telegram/Telegram.plist'
+  pull_request:
+    paths-ignore:
+      - 'docs/**'
+      - '**.md'
+      - 'changelog.txt'
+      - 'LEGAL'
+      - 'LICENSE'
+      - '.github/**'
+      - '!.github/workflows/snap.yml'
+      - 'Telegram/build/**'
+      - 'Telegram/Patches/**'
+      - 'Telegram/Resources/uwp/**'
+      - 'Telegram/Resources/winrc/**'
+      - 'Telegram/SourceFiles/platform/win/**'
+      - 'Telegram/SourceFiles/platform/mac/**'
+      - 'Telegram/Telegram/**'
+      - 'Telegram/configure.bat'
+      - 'Telegram/Telegram.plist'
+
+jobs:
+
+  linux:
+    name: Ubuntu
+    runs-on: ubuntu-latest
+
+    env:
+      UPLOAD_ARTIFACT: "false"
+
+    steps:
+      - name: Clone.
+        uses: actions/checkout@v2
+        with:
+          submodules: recursive
+
+      - name: First set up.
+        run: |
+          sudo apt-get purge --autoremove lxd
+
+          sudo snap install --classic snapcraft
+          sudo snap install lxd
+
+          # Workaround for snapcraft
+          # See https://forum.snapcraft.io/t/13258
+          sudo chown root:root /
+
+          sudo usermod -aG lxd $USER
+
+          sudo snap run lxd init --auto
+          sudo snap run lxd waitready
+
+      - name: Telegram Desktop snap build.
+        run: sg lxd -c 'snap run snapcraft --use-lxd'
+
+      - name: Move artifact.
+        if: env.UPLOAD_ARTIFACT == 'true'
+        run: |
+          artifact_name=$(echo telegram-desktop_*.snap)
+          echo "ARTIFACT_NAME=$artifact_name" >> $GITHUB_ENV
+
+          mkdir artifact
+          mv $artifact_name artifact
+
+      - uses: actions/upload-artifact@master
+        if: env.UPLOAD_ARTIFACT == 'true'
+        name: Upload artifact.
+        with:
+          name: ${{ env.ARTIFACT_NAME }}
+          path: artifact

.github/workflows/user_agent_updater.yml

@@ -0,0 +1,154 @@
+name: User-agent updater.
+
+on:
+  repository_dispatch:
+    types: ["Restart user_agent_updater workflow."]
+  schedule:
+    # At 00:00 on day-of-month 1.
+    - cron: '0 0 1 * *'
+  pull_request_target:
+    types: [closed]
+
+jobs:
+  User-agent:
+    runs-on: ubuntu-latest
+
+    env:
+      codeFile: "Telegram/SourceFiles/mtproto/details/mtproto_domain_resolver.cpp"
+      headBranchPrefix: "chrome_"
+      baseBranch: "dev"
+      isPull: "0"
+
+    steps:
+      - name: Set env.
+        if: startsWith(github.event_name, 'pull_request')
+        run: |
+          echo "isPull=1" >> $GITHUB_ENV
+
+      - name: Clone.
+        uses: actions/checkout@v2
+
+      - name: Set up git.
+        run: |
+          token=${{ secrets.TOKEN_FOR_MASTER_UPDATER }}
+          if [ -z "${token}" ]; then
+              echo "Token is unset. Nothing to do."
+              exit 1
+          fi
+
+          url=https://x-access-token:$token@github.com/$GITHUB_REPOSITORY
+
+          git config --global user.email "action@github.com"
+          git config --global user.name "GitHub Action"
+
+          git remote set-url origin $url
+
+      - name: Delete branch.
+        if: |
+          env.isPull == '1'
+            && github.event.action == 'closed'
+            && startsWith(github.head_ref, env.headBranchPrefix)
+        run: |
+          git push origin --delete ${{ github.head_ref }}
+
+      - name: Write a new version of Google Chrome to the user-agent for DNS.
+        if: env.isPull == '0'
+        shell: python
+        run: |
+          import subprocess, os, re;
+
+          regExpVersion = "[0-9]+.[0-9]+.[0-9]+.[0-9]+";
+          chrome = "Chrome/";
+
+          def newVersion():
+            output = subprocess.check_output(["google-chrome", "--version"]);
+            version = re.search(regExpVersion, output);
+            if not version:
+              print("Can't find a Chrome version.");
+              exit();
+            return version.group(0);
+
+          newChromeVersion = newVersion();
+          print(newChromeVersion);
+
+          def setEnv(value):
+            open(os.environ['GITHUB_ENV'], "a").write(value);
+
+          def writeUserAgent():
+            p = os.environ['codeFile'];
+            w = open(p, "r");
+            content = w.read();
+            w.close();
+
+            regExpChrome = chrome + regExpVersion;
+
+            version = re.search(regExpChrome, content);
+            if not version:
+              print("Can't find an user-agent in the code.");
+              exit();
+            content = re.sub(regExpChrome, chrome + newChromeVersion, content);
+
+            w = open(p, "w");
+            w.write(content);
+
+            setEnv("ChromeVersion=" + newChromeVersion);
+
+          writeUserAgent();
+
+      - name: Push to a new branch.
+        if: env.isPull == '0' && env.ChromeVersion != ''
+        run: |
+          git diff > git_diff.txt
+          if [[ ! -s git_diff.txt ]]; then
+            echo "Nothing to commit."
+            exit 0
+          fi
+
+          git checkout -b $headBranchPrefix$ChromeVersion
+          git add $codeFile
+          git commit -m "Update User-Agent for DNS to Chrome $ChromeVersion."
+
+          git push origin $headBranchPrefix$ChromeVersion
+          echo "Done!"
+
+      - name: Close previous pull requests.
+        if: env.isPull == '0' && env.ChromeVersion != ''
+        uses: actions/github-script@0.4.0
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          script: |
+            const common = {
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+            };
+
+            github.pulls.list(common).then(response => {
+              response.data.forEach((item, _) => {
+                if (item.head.ref.startsWith(process.env.headBranchPrefix)) {
+                  console.log(`Close ${item.title} #${item.number}.`);
+                  github.pulls.update({
+                    pull_number: item.number,
+                    state: "closed",
+                    ...common
+                  });
+                }
+              });
+            });
+
+      - name: Create a new pull request.
+        if: env.isPull == '0' && env.ChromeVersion != ''
+        uses: actions/github-script@0.4.0
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          script: |
+            const version = process.env.ChromeVersion;
+            const title = `Update User-Agent for DNS to Chrome ${version}.`;
+
+            github.pulls.create({
+              title: title,
+              body: "",
+              head: `${process.env.headBranchPrefix}${version}`,
+              base: process.env.baseBranch,
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+            });

.github/workflows/win.yml

@@ -0,0 +1,431 @@
+name: Windows.
+
+on:
+  push:
+    paths-ignore:
+      - 'docs/**'
+      - '**.md'
+      - '!docs/building-msvc.md'
+      - 'changelog.txt'
+      - 'LEGAL'
+      - 'LICENSE'
+      - '.github/**'
+      - '!.github/workflows/win.yml'
+      - 'lib/xdg/**'
+      - 'snap/**'
+      - 'Telegram/build/**'
+      - 'Telegram/Patches/**'
+      - '!Telegram/Patches/build_ffmpeg_win.sh'
+      - 'Telegram/Resources/uwp/**'
+      - 'Telegram/SourceFiles/platform/linux/**'
+      - 'Telegram/SourceFiles/platform/mac/**'
+      - 'Telegram/Telegram/**'
+      - 'Telegram/configure.sh'
+      - 'Telegram/Telegram.plist'
+  pull_request:
+    paths-ignore:
+      - 'docs/**'
+      - '**.md'
+      - '!docs/building-msvc.md'
+      - 'changelog.txt'
+      - 'LEGAL'
+      - 'LICENSE'
+      - '.github/**'
+      - '!.github/workflows/win.yml'
+      - 'lib/xdg/**'
+      - 'snap/**'
+      - 'Telegram/build/**'
+      - 'Telegram/Patches/**'
+      - '!Telegram/Patches/build_ffmpeg_win.sh'
+      - 'Telegram/Resources/uwp/**'
+      - 'Telegram/SourceFiles/platform/linux/**'
+      - 'Telegram/SourceFiles/platform/mac/**'
+      - '!Telegram/Patches/breakpad.diff'
+      - 'Telegram/Telegram/**'
+      - 'Telegram/configure.sh'
+      - 'Telegram/Telegram.plist'
+
+jobs:
+
+  windows:
+    name: Windows
+    runs-on: windows-latest
+
+    strategy:
+      matrix:
+        defines:
+          - ""
+    env:
+      SDK: "10.0.18362.0"
+      VC: "call vcvars32.bat && cd Libraries"
+      GIT: "https://github.com"
+      QT: "5_12_8"
+      QT_VER: "5.12.8"
+      OPENSSL_VER: "1_1_1"
+      UPLOAD_ARTIFACT: "false"
+      ONLY_CACHE: "false"
+      MANUAL_CACHING: "2"
+      DOC_PATH: "docs/building-msvc.md"
+      AUTO_CACHING: "1"
+
+    defaults:
+      run:
+        shell: cmd
+
+    steps:
+      - name: Get repository name.
+        shell: bash
+        run: echo "REPO_NAME=${GITHUB_REPOSITORY##*/}" >> $GITHUB_ENV
+
+      - name: Set up environment paths.
+        shell: bash
+        run: |
+          echo "C:\\Strawberry\\perl\\bin\\" >> $GITHUB_PATH
+          echo "C:\\Program Files\\NASM\\" >> $GITHUB_PATH
+          echo "C:\\Program Files (x86)\\Microsoft Visual Studio\\2019\\Enterprise\\VC\\Auxiliary\\Build\\" >> $GITHUB_PATH
+
+          mkdir Libraries && cd Libraries
+          echo "Convert unix path to win path."
+          p=`pwd | sed 's#^/[d]#d:#g' |sed 's#/#\\\\#g'`
+          echo "LibrariesPath=$p" >> $GITHUB_ENV
+
+      - name: Save msbuild version.
+        run: |
+          call vcvars32.bat
+          msbuild -version > CACHE_KEY.txt
+
+      - name: Clone.
+        uses: actions/checkout@v2
+        with:
+          submodules: recursive
+          path: ${{ env.REPO_NAME }}
+
+      - name: Generate cache key.
+        shell: bash
+        run: |
+          echo $MANUAL_CACHING >> CACHE_KEY.txt
+          if [ "$AUTO_CACHING" == "1" ]; then
+            thisFile=$REPO_NAME/.github/workflows/win.yml
+            echo `md5sum $thisFile | awk '{ print $1 }'` >> CACHE_KEY.txt
+          fi
+          echo "CACHE_KEY=`md5sum CACHE_KEY.txt | awk '{ print $1 }'`" >> $GITHUB_ENV
+
+      - name: Choco installs.
+        run: choco install --no-progress -y nasm yasm jom ninja
+
+      - name: Patches.
+        shell: bash
+        run: |
+          echo "Find necessary commit from doc."
+          checkoutCommit=$(grep -A 1 "cd patches" $REPO_NAME/$DOC_PATH | sed -n 2p)
+          cd $LibrariesPath
+          git clone $GIT/desktop-app/patches.git
+          cd Patches
+          eval $checkoutCommit
+
+      - name: Find any version of Python 2.
+        shell: bash
+        run: |
+          echo "Find any version of Python 2."
+          p=`ls /c/hostedtoolcache/windows/python | grep 2 | tail -1`
+          if [ -z "$p" ]; then
+            echo "Python 2 is not found."
+            exit 1
+          fi
+          echo "PY2=C:\\hostedtoolcache\\windows\\Python\\$p\\x64" >> $GITHUB_ENV
+          echo "Found $p."
+
+      - name: LZMA.
+        run: |
+          %VC%
+
+          git clone %GIT%/telegramdesktop/lzma.git
+          cd lzma
+          cd C\Util\LzmaLib
+          msbuild -m LzmaLib.sln /property:Configuration=Debug
+
+      - name: OpenSSL cache.
+        id: cache-openssl
+        uses: actions/cache@v2
+        with:
+          path: ${{ env.LibrariesPath }}/openssl_${{ env.OPENSSL_VER }}
+          key: ${{ runner.OS }}-${{ env.CACHE_KEY }}-${{ env.OPENSSL_VER }}
+      - name: OpenSSL.
+        if: steps.cache-openssl.outputs.cache-hit != 'true'
+        run: |
+          %VC%
+
+          git clone %GIT%/openssl/openssl.git openssl_%OPENSSL_VER%
+          cd openssl_%OPENSSL_VER%
+          git checkout OpenSSL_%OPENSSL_VER%-stable
+          perl Configure no-shared no-tests debug-VC-WIN32
+          nmake
+          mkdir out32.dbg
+          move libcrypto.lib out32.dbg
+          move libssl.lib out32.dbg
+          move ossl_static.pdb out32.dbg\ossl_static
+          nmake clean
+          move out32.dbg\ossl_static out32.dbg\ossl_static.pdb
+          perl Configure no-shared no-tests VC-WIN32
+          nmake
+          mkdir out32
+          move libcrypto.lib out32
+          move libssl.lib out32
+          move ossl_static.pdb out32
+
+          rmdir /S /Q test
+          rmdir /S /Q .git
+
+      - name: Zlib.
+        run: |
+          %VC%
+
+          git clone %GIT%/telegramdesktop/zlib.git
+          cd zlib
+          git checkout tdesktop
+          cd contrib\vstudio\vc14
+          msbuild -m zlibstat.vcxproj /property:Configuration=Debug
+
+      - name: MozJPEG.
+        shell: cmd
+        run: |
+          %VC%
+
+          git clone -b v4.0.1-rc2 %GIT%/mozilla/mozjpeg.git
+          cd mozjpeg
+          cmake . ^
+          -G "Visual Studio 16 2019" ^
+          -A Win32 ^
+          -DWITH_JPEG8=ON ^
+          -DPNG_SUPPORTED=OFF
+          cmake --build . --config Debug
+
+      - name: OpenAL Soft cache.
+        id: cache-openal
+        uses: actions/cache@v2
+        with:
+          path: ${{ env.LibrariesPath }}/openal-soft
+          key: ${{ runner.OS }}-openal-soft-${{ env.CACHE_KEY }}
+      - name: OpenAL Soft.
+        if: steps.cache-openal.outputs.cache-hit != 'true'
+        run: |
+          %VC%
+
+          git clone %GIT%/telegramdesktop/openal-soft.git
+          cd openal-soft
+          git checkout fix_capture
+          cd build
+          cmake .. ^
+          -G "Visual Studio 16 2019" ^
+          -A Win32 ^
+          -D LIBTYPE:STRING=STATIC ^
+          -D FORCE_STATIC_VCRT=ON ^
+          -D ALSOFT_BACKEND_WASAPI=OFF
+
+          msbuild -m OpenAL.vcxproj /property:Configuration=Debug
+
+      - name: Breakpad cache.
+        id: cache-breakpad
+        uses: actions/cache@v2
+        with:
+          path: ${{ env.LibrariesPath }}/breakpad
+          key: ${{ runner.OS }}-breakpad-${{ env.CACHE_KEY }}-${{ hashFiles('**/breakpad.diff') }}
+      - name: Breakpad.
+        env:
+          GYP_MSVS_OVERRIDE_PATH: 'C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\'
+          GYP_MSVS_VERSION: 2019
+        if: steps.cache-breakpad.outputs.cache-hit != 'true'
+        run: |
+          cd %LibrariesPath%
+
+          git clone %GIT%/telegramdesktop/gyp.git
+          cd gyp
+          SET PATH=%PY2%;%cd%;%PATH%
+          git checkout tdesktop
+
+          cd %LibrariesPath%
+
+          git clone %GIT%/google/breakpad
+          cd breakpad
+          git checkout a1dbcdcb43
+          git apply ../patches/breakpad.diff
+          cd src
+          git clone %GIT%/google/googletest testing
+          cd client\windows
+          call gyp --no-circular-check breakpad_client.gyp --format=ninja
+          cd ..\..
+          ninja -C out/Debug common crash_generation_client exception_handler
+          ninja -C out/Release common crash_generation_client exception_handler
+          cd tools\windows\dump_syms
+          call gyp dump_syms.gyp
+
+          call vcvars32.bat
+          msbuild -m dump_syms.vcxproj /property:Configuration=Release
+
+      - name: Opus cache.
+        id: cache-opus
+        uses: actions/cache@v2
+        with:
+          path: ${{ env.LibrariesPath }}/opus
+          key: ${{ runner.OS }}-opus-${{ env.CACHE_KEY }}
+      - name: Opus.
+        if: steps.cache-opus.outputs.cache-hit != 'true'
+        run: |
+          %VC%
+
+          git clone %GIT%/telegramdesktop/opus.git
+          cd opus
+          git checkout tdesktop
+          cd win32\VS2015
+          msbuild -m opus.sln /property:Configuration=Debug /property:Platform="Win32"
+          msbuild -m opus.sln /property:Configuration=Release /property:Platform="Win32"
+
+      - name: FFmpeg cache.
+        id: cache-ffmpeg
+        uses: actions/cache@v2
+        with:
+          path: ${{ env.LibrariesPath }}/ffmpeg
+          key: ${{ runner.OS }}-ffmpeg-${{ env.CACHE_KEY }}-2-${{ hashFiles('**/build_ffmpeg_win.sh') }}
+      - name: FFmpeg.
+        if: steps.cache-ffmpeg.outputs.cache-hit != 'true'
+        run: |
+          %VC%
+          choco install --no-progress -y msys2
+
+          git clone %GIT%/FFmpeg/FFmpeg.git ffmpeg
+          cd ffmpeg
+          git checkout release/3.4
+          set CHERE_INVOKING=enabled_from_arguments
+          set MSYS2_PATH_TYPE=inherit
+          call c:\tools\msys64\usr\bin\bash --login ../../%REPO_NAME%/Telegram/Patches/build_ffmpeg_win.sh
+
+          rmdir /S /Q .git
+
+      - name: Qt 5.12.8 cache.
+        id: cache-qt
+        uses: actions/cache@v2
+        with:
+          path: ${{ env.LibrariesPath }}/Qt-${{ env.QT_VER }}
+          key: ${{ runner.OS }}-qt-${{ env.CACHE_KEY }}-${{ hashFiles('**/qtbase_5_12_8/*') }}
+      - name: Configure Qt 5.12.8.
+        if: steps.cache-qt.outputs.cache-hit != 'true'
+        run: |
+          %VC%
+
+          git clone git://code.qt.io/qt/qt5.git qt_%QT%
+          cd qt_%QT%
+          perl init-repository --module-subset=qtbase,qtimageformats
+          git checkout v%QT_VER%
+          git submodule update qtbase
+          git submodule update qtimageformats
+          cd qtbase
+          for /r %%i in (..\..\patches\qtbase_%QT%\*) do git apply %%i
+          cd ..
+
+          SET SSL=%LibrariesPath%\openssl_%OPENSSL_VER%
+          SET LIBS=libcrypto.lib Ws2_32.lib Gdi32.lib Advapi32.lib Crypt32.lib User32.lib
+
+          configure ^
+          -prefix "%LibrariesPath%\Qt-%QT_VER%" ^
+          -debug ^
+          -force-debug-info ^
+          -opensource ^
+          -confirm-license ^
+          -static ^
+          -static-runtime -I "%SSL%\include" ^
+          -no-opengl ^
+          -openssl-linked ^
+          OPENSSL_LIBS_DEBUG="%SSL%\out32.dbg\libssl.lib %SSL%\out32.dbg\%LIBS%" ^
+          OPENSSL_LIBS_RELEASE="%SSL%\out32\libssl.lib %SSL%\out32\%LIBS%" ^
+          -mp ^
+          -nomake examples ^
+          -nomake tests ^
+          -platform win32-msvc ^
+          -I "%LibrariesPath%\mozjpeg" ^
+          LIBJPEG_LIBS_DEBUG="%LibrariesPath%\mozjpeg\Debug\jpeg-static.lib" ^
+          LIBJPEG_LIBS_RELEASE="%LibrariesPath%\mozjpeg\Release\jpeg-static.lib"
+      - name: Qt 5.12.8 build.
+        if: steps.cache-qt.outputs.cache-hit != 'true'
+        run: |
+          %VC%
+          cd qt_%QT%
+
+          jom -j%NUMBER_OF_PROCESSORS%
+          jom -j%NUMBER_OF_PROCESSORS% install
+
+          cd ..
+          rmdir /S /Q qt_%QT%
+
+      - name: WebRTC cache.
+        id: cache-webrtc
+        uses: actions/cache@v2
+        with:
+          path: ${{ env.LibrariesPath }}/tg_owt
+          key: ${{ runner.OS }}-webrtc-${{ env.CACHE_KEY }}
+      - name: WebRTC.
+        if: steps.cache-webrtc.outputs.cache-hit != 'true'
+        run: |
+          %VC%
+
+          git clone %GIT%/desktop-app/tg_owt.git
+          mkdir tg_owt\out\Debug
+          cd tg_owt\out\Debug
+          cmake -G Ninja ^
+          -DCMAKE_BUILD_TYPE=Debug ^
+          -DTG_OWT_SPECIAL_TARGET=win ^
+          -DTG_OWT_LIBJPEG_INCLUDE_PATH=%cd%/../../../mozjpeg ^
+          -DTG_OWT_OPENSSL_INCLUDE_PATH=%cd%/../../../openssl_%OPENSSL_VER%/include ^
+          -DTG_OWT_OPUS_INCLUDE_PATH=%cd%/../../../opus/include ^
+          -DTG_OWT_FFMPEG_INCLUDE_PATH=%cd%/../../../ffmpeg ^
+          ../..
+
+          ninja
+
+          :: Cleanup.
+          cd %LibrariesPath%\tg_owt
+          move out\Debug\tg_owt.lib tg_owt.lib
+          rmdir /S /Q out
+          mkdir out\Debug
+          move tg_owt.lib out\Debug\tg_owt.lib
+
+      - name: Read defines.
+        shell: bash
+        run: |
+          DEFINE=""
+          if [ -n "${{ matrix.defines }}" ]; then
+            DEFINE="-D ${{ matrix.defines }}=ON"
+            echo Define from matrix: $DEFINE
+            echo "ARTIFACT_NAME=Telegram_${{ matrix.defines }}" >> $GITHUB_ENV
+          else
+            echo "ARTIFACT_NAME=Telegram" >> $GITHUB_ENV
+          fi
+          echo "TDESKTOP_BUILD_DEFINE=$DEFINE" >> $GITHUB_ENV
+
+      - name: Telegram Desktop build.
+        if: env.ONLY_CACHE == 'false'
+        run: |
+          cd %REPO_NAME%\Telegram
+
+          call configure.bat ^
+          -D TDESKTOP_API_TEST=ON ^
+          -D DESKTOP_APP_USE_PACKAGED=OFF ^
+          -D DESKTOP_APP_DISABLE_CRASH_REPORTS=OFF ^
+          %TDESKTOP_BUILD_DEFINE% ^
+          -DCMAKE_SYSTEM_VERSION=%SDK%
+
+          call vcvars32.bat
+          cd ..\out
+          msbuild -m Telegram.sln /nologo /p:Configuration=Debug,Platform=Win32
+
+      - name: Move artifact.
+        if: env.UPLOAD_ARTIFACT == 'true'
+        run: |
+          cd %REPO_NAME%\out\Debug
+          mkdir artifact
+          move Telegram.exe artifact/
+      - uses: actions/upload-artifact@master
+        name: Upload artifact.
+        if: env.UPLOAD_ARTIFACT == 'true'
+        with:
+          name: ${{ env.ARTIFACT_NAME }}
+          path: ${{ env.REPO_NAME }}\out\Debug\artifact\

.gitignore

@@ -43,6 +43,7 @@ stage
 /snap/plugins/__pycache__
 
 /Telegram/*.user.*
+*.txt.user
 *.pro.user
 /Linux/
 /Telegram/Makefile

.gitmodules

@@ -1,9 +1,6 @@
 [submodule "Telegram/ThirdParty/libtgvoip"]
 	path = Telegram/ThirdParty/libtgvoip
 	url = https://github.com/telegramdesktop/libtgvoip
-[submodule "Telegram/ThirdParty/variant"]
-	path = Telegram/ThirdParty/variant
-	url = https://github.com/mapbox/variant
 [submodule "Telegram/ThirdParty/GSL"]
 	path = Telegram/ThirdParty/GSL
 	url = https://github.com/Microsoft/GSL.git
@@ -28,9 +25,6 @@
 [submodule "Telegram/lib_base"]
 	path = Telegram/lib_base
 	url = https://github.com/desktop-app/lib_base.git
-[submodule "Telegram/gyp/helpers"]
-	path = Telegram/gyp/helpers
-	url = https://github.com/desktop-app/gyp_helpers.git
 [submodule "Telegram/codegen"]
 	path = Telegram/codegen
 	url = https://github.com/desktop-app/codegen.git
@@ -49,3 +43,51 @@
 [submodule "Telegram/lib_spellcheck"]
 	path = Telegram/lib_spellcheck
 	url = https://github.com/desktop-app/lib_spellcheck
+[submodule "Telegram/lib_storage"]
+	path = Telegram/lib_storage
+	url = https://github.com/desktop-app/lib_storage.git
+[submodule "cmake"]
+	path = cmake
+	url = https://github.com/desktop-app/cmake_helpers.git
+[submodule "Telegram/ThirdParty/expected"]
+	path = Telegram/ThirdParty/expected
+	url = https://github.com/TartanLlama/expected
+[submodule "Telegram/ThirdParty/QR"]
+	path = Telegram/ThirdParty/QR
+	url = https://github.com/nayuki/QR-Code-generator
+[submodule "Telegram/lib_qr"]
+	path = Telegram/lib_qr
+	url = https://github.com/desktop-app/lib_qr.git
+[submodule "Telegram/ThirdParty/libdbusmenu-qt"]
+	path = Telegram/ThirdParty/libdbusmenu-qt
+	url = https://github.com/desktop-app/libdbusmenu-qt.git
+[submodule "Telegram/ThirdParty/hunspell"]
+	path = Telegram/ThirdParty/hunspell
+	url = https://github.com/hunspell/hunspell
+[submodule "Telegram/ThirdParty/materialdecoration"]
+	path = Telegram/ThirdParty/materialdecoration
+	url = https://github.com/desktop-app/materialdecoration.git
+[submodule "Telegram/ThirdParty/range-v3"]
+	path = Telegram/ThirdParty/range-v3
+	url = https://github.com/ericniebler/range-v3.git
+[submodule "Telegram/ThirdParty/fcitx-qt5"]
+	path = Telegram/ThirdParty/fcitx-qt5
+	url = https://github.com/fcitx/fcitx-qt5.git
+[submodule "Telegram/ThirdParty/nimf"]
+	path = Telegram/ThirdParty/nimf
+	url = https://github.com/hamonikr/nimf.git
+[submodule "Telegram/ThirdParty/hime"]
+	path = Telegram/ThirdParty/hime
+	url = https://github.com/hime-ime/hime.git
+[submodule "Telegram/ThirdParty/qt5ct"]
+	path = Telegram/ThirdParty/qt5ct
+	url = https://github.com/desktop-app/qt5ct.git
+[submodule "Telegram/ThirdParty/fcitx5-qt"]
+	path = Telegram/ThirdParty/fcitx5-qt
+	url = https://github.com/fcitx/fcitx5-qt.git
+[submodule "Telegram/lib_webrtc"]
+	path = Telegram/lib_webrtc
+	url = https://github.com/desktop-app/lib_webrtc.git
+[submodule "Telegram/ThirdParty/tgcalls"]
+	path = Telegram/ThirdParty/tgcalls
+	url = https://github.com/TelegramMessenger/tgcalls.git

.travis.yml

@@ -1,65 +0,0 @@
-sudo: required
-dist: trusty
-
-language: cpp
-
-cache:
-  directories:
-    - $HOME/travisCacheDir
-
-env:
-  matrix:
-   - BUILD_VERSION=""
-   - BUILD_VERSION="disable_register_custom_scheme"
-   - BUILD_VERSION="disable_crash_reports"
-   - BUILD_VERSION="disable_network_proxy"
-   - BUILD_VERSION="disable_desktop_file_generation"
-   - BUILD_VERSION="disable_gtk_integration"
-
-matrix:
-  fast_finish: true
-
-addons:
-  apt:
-    sources:
-      - ubuntu-toolchain-r-test
-    packages:
-      - bison
-      - build-essential
-      - cmake
-      - devscripts
-      - dpatch
-      - equivs
-      - fakeroot
-      - g++-8
-      - gcc-8
-      - git
-      - gnome-common
-      - gobject-introspection
-      - gtk-doc-tools
-      - libappindicator-dev
-      - libasound2-dev
-      - libdbusmenu-glib-dev
-      - liblzma-dev
-      - libopus-dev
-      - libpulse-dev
-      - libssl-dev
-      - libdee-dev
-      - libva-dev
-      - libvdpau-dev
-      - libxcb-xkb-dev
-      - libxkbcommon-dev
-      - lintian
-      - quilt
-      - valac
-      - xutils-dev
-      - yasm
-
-before_install:
-  - export CXX="g++-8" CC="gcc-8"
-  - sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-8 60 --slave /usr/bin/g++ g++ /usr/bin/g++-8
-  - sudo update-alternatives --config gcc
-  - g++ --version
-
-script:
-  - .travis/build.sh

.travis/build.sh

@@ -1,718 +0,0 @@
-#!/bin/bash
-
-set -e
-
-REPO="$PWD"
-
-BUILD="$REPO/build"
-UPSTREAM="$REPO/upstream"
-EXTERNAL="$REPO/external"
-CACHE="$HOME/travisCacheDir"
-
-QT_WAS_BUILT="0"
-
-QT_VERSION=5.6.2
-
-XKB_PATH="$BUILD/libxkbcommon"
-XKB_CACHE_VERSION="3"
-
-QT_PATH="$BUILD/qt"
-QT_CACHE_VERSION="4"
-QT_PATCH="$UPSTREAM/Telegram/Patches/qtbase_${QT_VERSION//\./_}.diff"
-
-BREAKPAD_PATH="$BUILD/breakpad"
-BREAKPAD_CACHE_VERSION="3"
-
-GYP_PATH="$BUILD/gyp"
-GYP_CACHE_VERSION="3"
-GYP_PATCH="$UPSTREAM/Telegram/Patches/gyp.diff"
-
-RANGE_PATH="$BUILD/range-v3"
-RANGE_CACHE_VERSION="3"
-
-VA_PATH="$BUILD/libva"
-VA_CACHE_VERSION="3"
-
-VDPAU_PATH="$BUILD/libvdpau"
-VDPAU_CACHE_VERSION="3"
-
-FFMPEG_PATH="$BUILD/ffmpeg"
-FFMPEG_CACHE_VERSION="3"
-
-OPENAL_PATH="$BUILD/openal-soft"
-OPENAL_CACHE_VERSION="4"
-
-GYP_DEFINES=""
-
-[[ ! $MAKE_ARGS ]] && MAKE_ARGS="--silent -j4"
-
-run() {
-  # Move files to subdir
-  cd ..
-  mv tdesktop tdesktop2
-  mkdir tdesktop
-  mv tdesktop2 "$UPSTREAM"
-
-  mkdir "$BUILD"
-
-  build
-  check
-}
-
-build() {
-  mkdir -p "$EXTERNAL"
-
-  BUILD_VERSION_DATA=$(echo $BUILD_VERSION | cut -d'-' -f 1)
-
-  # libxkbcommon
-  getXkbCommon
-
-  # libva
-  getVa
-
-  # libvdpau
-  getVdpau
-
-  # ffmpeg
-  getFFmpeg
-
-  # openal_soft
-  getOpenAL
-
-  # Patched Qt
-  getCustomQt
-
-  # Breakpad
-  getBreakpad
-
-  # Patched GYP (supports cmake precompiled headers)
-  getGYP
-
-  # Range v3
-  getRange
-
-  # Guideline Support Library
-  getGSL
-
-  if [ "$QT_WAS_BUILT" == "1" ]; then
-    error_msg "Qt was built, please restart the job :("
-    exit 1
-  fi
-
-  # Configure the build
-  if [[ $BUILD_VERSION == *"disable_register_custom_scheme"* ]]; then
-    GYP_DEFINES+=",TDESKTOP_DISABLE_REGISTER_CUSTOM_SCHEME"
-  fi
-
-  if [[ $BUILD_VERSION == *"disable_crash_reports"* ]]; then
-    GYP_DEFINES+=",TDESKTOP_DISABLE_CRASH_REPORTS"
-  fi
-
-  if [[ $BUILD_VERSION == *"disable_network_proxy"* ]]; then
-    GYP_DEFINES+=",TDESKTOP_DISABLE_NETWORK_PROXY"
-  fi
-
-  if [[ $BUILD_VERSION == *"disable_desktop_file_generation"* ]]; then
-    GYP_DEFINES+=",TDESKTOP_DISABLE_DESKTOP_FILE_GENERATION"
-  fi
-
-  if [[ $BUILD_VERSION == *"disable_gtk_integration"* ]]; then
-    GYP_DEFINES+=",TDESKTOP_DISABLE_GTK_INTEGRATION"
-  fi
-
-  info_msg "Build defines: ${GYP_DEFINES}"
-
-  buildTelegram
-
-  travisEndFold
-}
-
-getXkbCommon() {
-  travisStartFold "Getting xkbcommon"
-
-  local XKB_CACHE="$CACHE/libxkbcommon"
-  local XKB_CACHE_FILE="$XKB_CACHE/.cache.txt"
-  local XKB_CACHE_KEY="${XKB_CACHE_VERSION}"
-  local XKB_CACHE_OUTDATED="1"
-
-  if [ ! -d "$XKB_CACHE" ]; then
-    mkdir -p "$XKB_CACHE"
-  fi
-
-  ln -sf "$XKB_CACHE" "$XKB_PATH"
-
-  if [ -f "$XKB_CACHE_FILE" ]; then
-    local XKB_CACHE_KEY_FOUND=`tail -n 1 $XKB_CACHE_FILE`
-    if [ "$XKB_CACHE_KEY" == "$XKB_CACHE_KEY_FOUND" ]; then
-      XKB_CACHE_OUTDATED="0"
-    else
-      info_msg "Cache key '$XKB_CACHE_KEY_FOUND' does not match '$XKB_CACHE_KEY', rebuilding libxkbcommon"
-    fi
-  fi
-  if [ "$XKB_CACHE_OUTDATED" == "1" ]; then
-    buildXkbCommon
-    sudo echo $XKB_CACHE_KEY > "$XKB_CACHE_FILE"
-  else
-    info_msg "Using cached libxkbcommon"
-  fi
-}
-
-buildXkbCommon() {
-  info_msg "Downloading and building libxkbcommon"
-
-  if [ -d "$EXTERNAL/libxkbcommon" ]; then
-    rm -rf "$EXTERNAL/libxkbcommon"
-  fi
-  cd $XKB_PATH
-  rm -rf *
-
-  cd "$EXTERNAL"
-  git clone https://github.com/xkbcommon/libxkbcommon.git
-
-  cd "$EXTERNAL/libxkbcommon"
-  git checkout xkbcommon-0.8.4
-  ./autogen.sh --prefix=$XKB_PATH
-  make $MAKE_ARGS
-  sudo make install
-  sudo ldconfig
-}
-
-getRange() {
-  travisStartFold "Getting range-v3"
-
-  local RANGE_CACHE="$CACHE/range-v3"
-  local RANGE_CACHE_FILE="$RANGE_CACHE/.cache.txt"
-  local RANGE_CACHE_KEY="${RANGE_CACHE_VERSION}"
-  local RANGE_CACHE_OUTDATED="1"
-
-  if [ ! -d "$RANGE_CACHE" ]; then
-    mkdir -p "$RANGE_CACHE"
-  fi
-
-  ln -sf "$RANGE_CACHE" "$RANGE_PATH"
-
-  if [ -f "$RANGE_CACHE_FILE" ]; then
-    local RANGE_CACHE_KEY_FOUND=`tail -n 1 $RANGE_CACHE_FILE`
-    if [ "$RANGE_CACHE_KEY" == "$RANGE_CACHE_KEY_FOUND" ]; then
-      RANGE_CACHE_OUTDATED="0"
-    else
-      info_msg "Cache key '$RANGE_CACHE_KEY_FOUND' does not match '$RANGE_CACHE_KEY', getting range-v3"
-    fi
-  fi
-  if [ "$RANGE_CACHE_OUTDATED" == "1" ]; then
-    buildRange
-    sudo echo $RANGE_CACHE_KEY > "$RANGE_CACHE_FILE"
-  else
-    info_msg "Using cached range-v3"
-  fi
-}
-
-buildRange() {
-  info_msg "Downloading range-v3"
-
-  if [ -d "$EXTERNAL/range-v3" ]; then
-    rm -rf "$EXTERNAL/range-v3"
-  fi
-  cd $RANGE_PATH
-  rm -rf *
-
-  cd "$EXTERNAL"
-  git clone --depth 1 --branch 0.9.1 https://github.com/ericniebler/range-v3
-
-  cd "$EXTERNAL/range-v3"
-  cp -r * "$RANGE_PATH/"
-}
-
-getVa() {
-  travisStartFold "Getting libva"
-
-  local VA_CACHE="$CACHE/libva"
-  local VA_CACHE_FILE="$VA_CACHE/.cache.txt"
-  local VA_CACHE_KEY="${VA_CACHE_VERSION}"
-  local VA_CACHE_OUTDATED="1"
-
-  if [ ! -d "$VA_CACHE" ]; then
-    mkdir -p "$VA_CACHE"
-  fi
-
-  ln -sf "$VA_CACHE" "$VA_PATH"
-
-  if [ -f "$VA_CACHE_FILE" ]; then
-    local VA_CACHE_KEY_FOUND=`tail -n 1 $VA_CACHE_FILE`
-    if [ "$VA_CACHE_KEY" == "$VA_CACHE_KEY_FOUND" ]; then
-      VA_CACHE_OUTDATED="0"
-    else
-      info_msg "Cache key '$VA_CACHE_KEY_FOUND' does not match '$VA_CACHE_KEY', rebuilding libva"
-    fi
-  fi
-  if [ "$VA_CACHE_OUTDATED" == "1" ]; then
-    buildVa
-    sudo echo $VA_CACHE_KEY > "$VA_CACHE_FILE"
-  else
-    info_msg "Using cached libva"
-  fi
-}
-
-buildVa() {
-  info_msg "Downloading and building libva"
-
-  if [ -d "$EXTERNAL/libva" ]; then
-    rm -rf "$EXTERNAL/libva"
-  fi
-  cd $VA_PATH
-  rm -rf *
-
-  cd "$EXTERNAL"
-  git clone https://github.com/01org/libva
-
-  cd "$EXTERNAL/libva"
-  ./autogen.sh --prefix=$VA_PATH --enable-static
-  make $MAKE_ARGS
-  sudo make install
-  sudo ldconfig
-}
-
-getVdpau() {
-  travisStartFold "Getting libvdpau"
-
-  local VDPAU_CACHE="$CACHE/libvdpau"
-  local VDPAU_CACHE_FILE="$VDPAU_CACHE/.cache.txt"
-  local VDPAU_CACHE_KEY="${VDPAU_CACHE_VERSION}"
-  local VDPAU_CACHE_OUTDATED="1"
-
-  if [ ! -d "$VDPAU_CACHE" ]; then
-    mkdir -p "$VDPAU_CACHE"
-  fi
-
-  ln -sf "$VDPAU_CACHE" "$VDPAU_PATH"
-
-  if [ -f "$VDPAU_CACHE_FILE" ]; then
-    local VDPAU_CACHE_KEY_FOUND=`tail -n 1 $VDPAU_CACHE_FILE`
-    if [ "$VDPAU_CACHE_KEY" == "$VDPAU_CACHE_KEY_FOUND" ]; then
-      VDPAU_CACHE_OUTDATED="0"
-    else
-      info_msg "Cache key '$VDPAU_CACHE_KEY_FOUND' does not match '$VDPAU_CACHE_KEY', rebuilding libvdpau"
-    fi
-  fi
-  if [ "$VDPAU_CACHE_OUTDATED" == "1" ]; then
-    buildVdpau
-    sudo echo $VDPAU_CACHE_KEY > "$VDPAU_CACHE_FILE"
-  else
-    info_msg "Using cached libvdpau"
-  fi
-}
-
-buildVdpau() {
-  info_msg "Downloading and building libvdpau"
-
-  if [ -d "$EXTERNAL/libvdpau" ]; then
-    rm -rf "$EXTERNAL/libvdpau"
-  fi
-  cd $VDPAU_PATH
-  rm -rf *
-
-  cd "$EXTERNAL"
-  git clone git://anongit.freedesktop.org/vdpau/libvdpau
-
-  cd "$EXTERNAL/libvdpau"
-  git checkout libvdpau-1.2
-  ./autogen.sh --prefix=$VDPAU_PATH --enable-static
-  make $MAKE_ARGS
-  sudo make install
-  sudo ldconfig
-}
-
-getFFmpeg() {
-  travisStartFold "Getting ffmpeg"
-
-  local FFMPEG_CACHE="$CACHE/ffmpeg"
-  local FFMPEG_CACHE_FILE="$FFMPEG_CACHE/.cache.txt"
-  local FFMPEG_CACHE_KEY="${FFMPEG_CACHE_VERSION}"
-  local FFMPEG_CACHE_OUTDATED="1"
-
-  if [ ! -d "$FFMPEG_CACHE" ]; then
-    mkdir -p "$FFMPEG_CACHE"
-  fi
-
-  ln -sf "$FFMPEG_CACHE" "$FFMPEG_PATH"
-
-  if [ -f "$FFMPEG_CACHE_FILE" ]; then
-    local FFMPEG_CACHE_KEY_FOUND=`tail -n 1 $FFMPEG_CACHE_FILE`
-    if [ "$FFMPEG_CACHE_KEY" == "$FFMPEG_CACHE_KEY_FOUND" ]; then
-      FFMPEG_CACHE_OUTDATED="0"
-    else
-      info_msg "Cache key '$FFMPEG_CACHE_KEY_FOUND' does not match '$FFMPEG_CACHE_KEY', rebuilding ffmpeg"
-    fi
-  fi
-  if [ "$FFMPEG_CACHE_OUTDATED" == "1" ]; then
-    buildFFmpeg
-    sudo echo $FFMPEG_CACHE_KEY > "$FFMPEG_CACHE_FILE"
-  else
-    info_msg "Using cached ffmpeg"
-  fi
-}
-
-buildFFmpeg() {
-  info_msg "Downloading and building ffmpeg"
-
-  if [ -d "$EXTERNAL/ffmpeg" ]; then
-    rm -rf "$EXTERNAL/ffmpeg"
-  fi
-  cd $FFMPEG_PATH
-  rm -rf *
-
-  cd "$EXTERNAL"
-  git clone https://git.ffmpeg.org/ffmpeg.git
-
-  cd "$EXTERNAL/ffmpeg"
-  git checkout release/3.4
-
-  ./configure \
-      --prefix=$FFMPEG_PATH \
-      --disable-debug \
-      --disable-programs \
-      --disable-doc \
-      --disable-everything \
-      --enable-gpl \
-      --enable-version3 \
-      --enable-libopus \
-      --enable-decoder=aac \
-      --enable-decoder=aac_latm \
-      --enable-decoder=aasc \
-      --enable-decoder=flac \
-      --enable-decoder=gif \
-      --enable-decoder=h264 \
-      --enable-decoder=h264_vdpau \
-      --enable-decoder=mp1 \
-      --enable-decoder=mp1float \
-      --enable-decoder=mp2 \
-      --enable-decoder=mp2float \
-      --enable-decoder=mp3 \
-      --enable-decoder=mp3adu \
-      --enable-decoder=mp3adufloat \
-      --enable-decoder=mp3float \
-      --enable-decoder=mp3on4 \
-      --enable-decoder=mp3on4float \
-      --enable-decoder=mpeg4 \
-      --enable-decoder=mpeg4_vdpau \
-      --enable-decoder=msmpeg4v2 \
-      --enable-decoder=msmpeg4v3 \
-      --enable-decoder=opus \
-      --enable-decoder=vorbis \
-      --enable-decoder=wavpack \
-      --enable-decoder=wmalossless \
-      --enable-decoder=wmapro \
-      --enable-decoder=wmav1 \
-      --enable-decoder=wmav2 \
-      --enable-decoder=wmavoice \
-      --enable-encoder=libopus \
-      --enable-hwaccel=h264_vaapi \
-      --enable-hwaccel=h264_vdpau \
-      --enable-hwaccel=mpeg4_vaapi \
-      --enable-hwaccel=mpeg4_vdpau \
-      --enable-parser=aac \
-      --enable-parser=aac_latm \
-      --enable-parser=flac \
-      --enable-parser=h264 \
-      --enable-parser=mpeg4video \
-      --enable-parser=mpegaudio \
-      --enable-parser=opus \
-      --enable-parser=vorbis \
-      --enable-demuxer=aac \
-      --enable-demuxer=flac \
-      --enable-demuxer=gif \
-      --enable-demuxer=h264 \
-      --enable-demuxer=mov \
-      --enable-demuxer=mp3 \
-      --enable-demuxer=ogg \
-      --enable-demuxer=wav \
-      --enable-muxer=ogg \
-      --enable-muxer=opus
-  make $MAKE_ARGS
-  sudo make install
-  sudo ldconfig
-}
-
-getOpenAL() {
-  travisStartFold "Getting openal-soft"
-
-  local OPENAL_CACHE="$CACHE/openal-soft"
-  local OPENAL_CACHE_FILE="$OPENAL_CACHE/.cache.txt"
-  local OPENAL_CACHE_KEY="${OPENAL_CACHE_VERSION}"
-  local OPENAL_CACHE_OUTDATED="1"
-
-  if [ ! -d "$OPENAL_CACHE" ]; then
-    mkdir -p "$OPENAL_CACHE"
-  fi
-
-  ln -sf "$OPENAL_CACHE" "$OPENAL_PATH"
-
-  if [ -f "$OPENAL_CACHE_FILE" ]; then
-    local OPENAL_CACHE_KEY_FOUND=`tail -n 1 $OPENAL_CACHE_FILE`
-    if [ "$OPENAL_CACHE_KEY" == "$OPENAL_CACHE_KEY_FOUND" ]; then
-      OPENAL_CACHE_OUTDATED="0"
-    else
-      info_msg "Cache key '$OPENAL_CACHE_KEY_FOUND' does not match '$OPENAL_CACHE_KEY', rebuilding openal-soft"
-    fi
-  fi
-  if [ "$OPENAL_CACHE_OUTDATED" == "1" ]; then
-    buildOpenAL
-    sudo echo $OPENAL_CACHE_KEY > "$OPENAL_CACHE_FILE"
-  else
-    info_msg "Using cached openal-soft"
-  fi
-}
-
-buildOpenAL() {
-  info_msg "Downloading and building openal-soft"
-
-  if [ -d "$EXTERNAL/openal-soft" ]; then
-    rm -rf "$EXTERNAL/openal-soft"
-  fi
-  cd $OPENAL_PATH
-  sudo rm -rf *
-
-  cd "$EXTERNAL"
-  git clone https://github.com/kcat/openal-soft.git
-  cd openal-soft
-  git checkout openal-soft-1.19.1
-
-  cd "$EXTERNAL/openal-soft/build"
-  cmake \
-      -D CMAKE_INSTALL_PREFIX=$OPENAL_PATH \
-      -D CMAKE_BUILD_TYPE=Release \
-      -D LIBTYPE=STATIC \
-      -D ALSOFT_EXAMPLES=OFF \
-      -D ALSOFT_TESTS=OFF \
-      -D ALSOFT_UTILS=OFF \
-      ..
-  make $MAKE_ARGS
-  sudo make install
-  sudo ldconfig
-}
-
-getBreakpad() {
-  travisStartFold "Getting breakpad"
-
-  local BREAKPAD_CACHE="$CACHE/breakpad"
-  local BREAKPAD_CACHE_FILE="$BREAKPAD_CACHE/.cache.txt"
-  local BREAKPAD_CACHE_KEY="${BREAKPAD_CACHE_VERSION}"
-  local BREAKPAD_CACHE_OUTDATED="1"
-
-  if [ ! -d "$BREAKPAD_CACHE" ]; then
-    mkdir -p "$BREAKPAD_CACHE"
-  fi
-
-  ln -sf "$BREAKPAD_CACHE" "$BREAKPAD_PATH"
-
-  if [ -f "$BREAKPAD_CACHE_FILE" ]; then
-    local BREAKPAD_CACHE_KEY_FOUND=`tail -n 1 $BREAKPAD_CACHE_FILE`
-    if [ "$BREAKPAD_CACHE_KEY" == "$BREAKPAD_CACHE_KEY_FOUND" ]; then
-      BREAKPAD_CACHE_OUTDATED="0"
-    else
-      info_msg "Cache key '$BREAKPAD_CACHE_KEY_FOUND' does not match '$BREAKPAD_CACHE_KEY', rebuilding breakpad"
-    fi
-  fi
-  if [ "$BREAKPAD_CACHE_OUTDATED" == "1" ]; then
-    buildBreakpad
-    sudo echo $BREAKPAD_CACHE_KEY > "$BREAKPAD_CACHE_FILE"
-  else
-    info_msg "Using cached breakpad"
-  fi
-}
-
-buildBreakpad() {
-  info_msg "Downloading and building breakpad"
-
-  if [ -d "$EXTERNAL/breakpad" ]; then
-    rm -rf "$EXTERNAL/breakpad"
-  fi
-  cd $BREAKPAD_PATH
-  rm -rf *
-
-  cd "$EXTERNAL"
-  git clone https://chromium.googlesource.com/breakpad/breakpad
-
-  cd "$EXTERNAL/breakpad/src/third_party"
-  git clone https://chromium.googlesource.com/linux-syscall-support lss
-
-  cd "$EXTERNAL/breakpad"
-  ./configure --prefix=$BREAKPAD_PATH
-  make $MAKE_ARGS
-  sudo make install
-  sudo ldconfig
-}
-
-getCustomQt() {
-  travisStartFold "Getting patched Qt"
-
-  local QT_CACHE="$CACHE/qtPatched"
-  local QT_CACHE_FILE="$QT_CACHE/.cache.txt"
-  local QT_PATCH_CHECKSUM=`sha1sum $QT_PATCH`
-  local QT_CACHE_KEY="${QT_VERSION}_${QT_CACHE_VERSION}_${QT_PATCH_CHECKSUM:0:32}"
-  local QT_CACHE_OUTDATED="1"
-
-  if [ ! -d "$QT_CACHE" ]; then
-    mkdir -p "$QT_CACHE"
-  fi
-
-  ln -sf "$QT_CACHE" "$QT_PATH"
-
-  if [ -f "$QT_CACHE_FILE" ]; then
-    local QT_CACHE_KEY_FOUND=`tail -n 1 $QT_CACHE_FILE`
-    if [ "$QT_CACHE_KEY" == "$QT_CACHE_KEY_FOUND" ]; then
-      QT_CACHE_OUTDATED="0"
-    else
-      info_msg "Cache key '$QT_CACHE_KEY_FOUND' does not match '$QT_CACHE_KEY', rebuilding patched Qt"
-    fi
-  fi
-  if [ "$QT_CACHE_OUTDATED" == "1" ]; then
-    buildCustomQt
-    sudo echo $QT_CACHE_KEY > "$QT_CACHE_FILE"
-  else
-    info_msg "Using cached patched Qt"
-  fi
-
-  export PATH="$QT_PATH/bin:$PATH"
-}
-
-buildCustomQt() {
-  QT_WAS_BUILT="1"
-  info_msg "Downloading and building patched qt"
-
-  if [ -d "$EXTERNAL/qt${QT_VERSION}" ]; then
-    sudo rm -rf "$EXTERNAL/qt${QT_VERSION}"
-  fi
-  cd $QT_PATH
-  sudo rm -rf *
-
-  cd "$EXTERNAL"
-  git clone git://code.qt.io/qt/qt5.git qt${QT_VERSION}
-
-  cd "$EXTERNAL/qt${QT_VERSION}"
-  perl init-repository --branch --module-subset=qtbase,qtimageformats
-  git checkout v${QT_VERSION}
-  cd qtbase && git checkout v${QT_VERSION} && cd ..
-  cd qtimageformats && git checkout v${QT_VERSION} && cd ..
-
-  cd "$EXTERNAL/qt${QT_VERSION}/qtbase"
-  git apply "$QT_PATCH"
-  cd ..
-
-  cd "$EXTERNAL/qt${QT_VERSION}/qtbase/src/plugins/platforminputcontexts"
-  git clone https://github.com/telegramdesktop/fcitx.git
-  git clone https://github.com/telegramdesktop/hime.git
-  git clone https://github.com/telegramdesktop/nimf.git
-  cd ../../../..
-
-  ./configure -prefix $QT_PATH -release -opensource -confirm-license -qt-zlib \
-              -qt-libpng -qt-libjpeg -qt-freetype -qt-harfbuzz -qt-pcre -qt-xcb \
-              -qt-xkbcommon-x11 -no-opengl -no-gtkstyle -static \
-              -nomake examples -nomake tests -no-mirclient \
-              -dbus-runtime -no-gstreamer -no-mtdev # <- Not sure about these
-  make $MAKE_ARGS
-  sudo make install
-}
-
-getGSL() {
-  cd "$UPSTREAM"
-  git submodule init
-  git submodule update
-}
-
-getGYP() {
-  travisStartFold "Getting patched GYP"
-
-  local GYP_CACHE="$CACHE/gyp"
-  local GYP_CACHE_FILE="$GYP_CACHE/.cache.txt"
-  local GYP_PATCH_CHECKSUM=`sha1sum $GYP_PATCH`
-  local GYP_CACHE_KEY="${GYP_CACHE_VERSION}_${GYP_PATCH_CHECKSUM:0:32}"
-  local GYP_CACHE_OUTDATED="1"
-
-  if [ ! -d "$GYP_CACHE" ]; then
-    mkdir -p "$GYP_CACHE"
-  fi
-
-  ln -sf "$GYP_CACHE" "$GYP_PATH"
-
-  if [ -f "$GYP_CACHE_FILE" ]; then
-    local GYP_CACHE_KEY_FOUND=`tail -n 1 $GYP_CACHE_FILE`
-    if [ "$GYP_CACHE_KEY" == "$GYP_CACHE_KEY_FOUND" ]; then
-      GYP_CACHE_OUTDATED="0"
-    else
-      info_msg "Cache key '$GYP_CACHE_KEY_FOUND' does not match '$GYP_CACHE_KEY', rebuilding patched GYP"
-    fi
-  fi
-  if [ "$GYP_CACHE_OUTDATED" == "1" ]; then
-    buildGYP
-    sudo echo $GYP_CACHE_KEY > "$GYP_CACHE_FILE"
-  else
-    info_msg "Using cached patched GYP"
-  fi
-}
-
-buildGYP() {
-  info_msg "Downloading and building patched GYP"
-
-  if [ -d "$EXTERNAL/gyp" ]; then
-    rm -rf "$EXTERNAL/gyp"
-  fi
-  cd $GYP_PATH
-  rm -rf *
-
-  cd "$EXTERNAL"
-  git clone https://chromium.googlesource.com/external/gyp
-
-  cd "$EXTERNAL/gyp"
-  git checkout 702ac58e47
-  git apply "$GYP_PATCH"
-  cp -r * "$GYP_PATH/"
-}
-
-buildTelegram() {
-  travisStartFold "Build tdesktop"
-
-  cd "$UPSTREAM/Telegram/gyp"
-  "$GYP_PATH/gyp" \
-      -Dapi_id=17349 \
-      -Dapi_hash=344583e45741c457fe1862106095a5eb \
-      -Dbuild_defines=${GYP_DEFINES:1} \
-      -Dlinux_path_xkbcommon=$XKB_PATH \
-      -Dlinux_path_va=$VA_PATH \
-      -Dlinux_path_vdpau=$VDPAU_PATH \
-      -Dlinux_path_ffmpeg=$FFMPEG_PATH \
-      -Dlinux_path_openal=$OPENAL_PATH \
-      -Dlinux_path_range=$RANGE_PATH \
-      -Dlinux_path_qt=$QT_PATH \
-      -Dlinux_path_breakpad=$BREAKPAD_PATH \
-      -Dlinux_path_libexif_lib=/usr/local/lib \
-      -Dlinux_path_opus_include=/usr/include/opus \
-      -Dlinux_lib_ssl=-lssl \
-      -Dlinux_lib_crypto=-lcrypto \
-      -Dlinux_lib_icu=-licuuc\ -licutu\ -licui18n \
-      --depth=. --generator-output=.. --format=cmake -Goutput_dir=../out \
-      Telegram.gyp
-  cd "$UPSTREAM/out/Debug"
-
-  export ASM="gcc"
-  cmake .
-  make $MAKE_ARGS
-}
-
-check() {
-  local filePath="$UPSTREAM/out/Debug/Telegram"
-  if test -f "$filePath"; then
-    success_msg "Build successfully done! :)"
-
-    local size;
-    size=$(stat -c %s "$filePath")
-    success_msg "File size of ${filePath}: ${size} Bytes"
-  else
-    error_msg "Build error, output file does not exist"
-    exit 1
-  fi
-}
-
-source ./.travis/common.sh
-
-run

.travis/common.sh

@@ -1,64 +0,0 @@
-#!/usr/bin/env bash
-# set colors
-RCol='\e[0m'    # Text Reset
-
-# Regular           Bold                Underline           High Intensity      BoldHigh Intens     Background          High Intensity Backgrounds
-Bla='\e[0;30m';     BBla='\e[1;30m';    UBla='\e[4;30m';    IBla='\e[0;90m';    BIBla='\e[1;90m';   On_Bla='\e[40m';    On_IBla='\e[0;100m';
-Red='\e[0;31m';     BRed='\e[1;31m';    URed='\e[4;31m';    IRed='\e[0;91m';    BIRed='\e[1;91m';   On_Red='\e[41m';    On_IRed='\e[0;101m';
-Gre='\e[0;32m';     BGre='\e[1;32m';    UGre='\e[4;32m';    IGre='\e[0;92m';    BIGre='\e[1;92m';   On_Gre='\e[42m';    On_IGre='\e[0;102m';
-Yel='\e[0;33m';     BYel='\e[1;33m';    UYel='\e[4;33m';    IYel='\e[0;93m';    BIYel='\e[1;93m';   On_Yel='\e[43m';    On_IYel='\e[0;103m';
-Blu='\e[0;34m';     BBlu='\e[1;34m';    UBlu='\e[4;34m';    IBlu='\e[0;94m';    BIBlu='\e[1;94m';   On_Blu='\e[44m';    On_IBlu='\e[0;104m';
-Pur='\e[0;35m';     BPur='\e[1;35m';    UPur='\e[4;35m';    IPur='\e[0;95m';    BIPur='\e[1;95m';   On_Pur='\e[45m';    On_IPur='\e[0;105m';
-Cya='\e[0;36m';     BCya='\e[1;36m';    UCya='\e[4;36m';    ICya='\e[0;96m';    BICya='\e[1;96m';   On_Cya='\e[46m';    On_ICya='\e[0;106m';
-Whi='\e[0;37m';     BWhi='\e[1;37m';    UWhi='\e[4;37m';    IWhi='\e[0;97m';    BIWhi='\e[1;97m';   On_Whi='\e[47m';    On_IWhi='\e[0;107m';
-
-start_msg() {
-    echo -e "\n${Gre}$*${RCol}"
-}
-
-info_msg() {
-    sameLineInfoMessage "\n$1"
-}
-
-error_msg() {
-    echo -e "\n${BRed}$*${RCol}"
-}
-
-success_msg() {
-    echo -e "\n${BGre}$*${RCol}"
-}
-
-sameLineInfoMessage() {
-    echo -e "${Cya}$*${RCol}"
-}
-
-TRAVIS_LAST_FOLD=""
-
-travisStartFold() {
-    local TITLE="$1"
-    local NAME=$(sanitizeName "$TITLE")
-
-    if [ "$TRAVIS_LAST_FOLD" != "" ]; then
-        travisEndFold
-    fi
-
-    echo "travis_fold:start:$NAME"
-    sameLineInfoMessage "$TITLE"   
-
-    TRAVIS_LAST_FOLD="$NAME"
-}
-
-travisEndFold() {
-    if [ "$TRAVIS_LAST_FOLD" == "" ]; then
-        return
-    fi
-
-    echo "travis_fold:end:$TRAVIS_LAST_FOLD"
-    TRAVIS_LAST_FOLD=""
-}
-
-sanitizeName() {
-    local NAME="${1// /_}"
-    local NAME="${NAME,,}"
-    echo "$NAME"
-}

CMakeLists.txt

@@ -0,0 +1,44 @@
+# This file is part of Telegram Desktop,
+# the official desktop application for the Telegram messaging service.
+#
+# For license and copyright information please follow this link:
+# https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+
+cmake_minimum_required(VERSION 3.16)
+cmake_policy(SET CMP0076 NEW)
+cmake_policy(SET CMP0091 NEW)
+
+set_property(GLOBAL PROPERTY USE_FOLDERS ON)
+
+include(cmake/validate_special_target.cmake)
+include(cmake/version.cmake)
+desktop_app_parse_version(Telegram/build/version)
+
+project(Telegram
+    LANGUAGES C CXX
+    VERSION ${desktop_app_version_cmake}
+    DESCRIPTION "Official Telegram Desktop messenger"
+    HOMEPAGE_URL "https://desktop.telegram.org"
+)
+set_property(DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR} PROPERTY VS_STARTUP_PROJECT Telegram)
+
+get_filename_component(third_party_loc "Telegram/ThirdParty" REALPATH)
+get_filename_component(submodules_loc "Telegram" REALPATH)
+
+include(cmake/variables.cmake)
+include(cmake/nice_target_sources.cmake)
+include(cmake/target_link_static_libraries.cmake)
+include(cmake/target_link_frameworks.cmake)
+include(cmake/init_target.cmake)
+include(cmake/generate_target.cmake)
+
+include(cmake/options.cmake)
+
+include(cmake/external/qt/package.cmake)
+
+set(desktop_app_skip_libs
+    variant
+)
+
+add_subdirectory(cmake)
+add_subdirectory(Telegram)

LEGAL

@@ -1,7 +1,7 @@
 This file is part of Telegram Desktop,
 the official desktop application for the Telegram messaging service.
 
-Copyright (c) 2014-2019 John Preston, https://desktop.telegram.org
+Copyright (c) 2014-2020 The Telegram Desktop Authors.
 
 Telegram Desktop is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

README.md

@@ -3,8 +3,9 @@
 This is the complete source code and the build instructions for the alpha version of the official desktop client for the [Telegram][telegram] messenger, based on the [Telegram API][telegram_api] and the [MTProto][telegram_proto] secure protocol.
 
 [![Version](https://badge.fury.io/gh/telegramdesktop%2Ftdesktop.svg)](https://github.com/telegramdesktop/tdesktop/releases)
-[![Build Status](https://travis-ci.org/telegramdesktop/tdesktop.svg?branch=dev)](https://travis-ci.org/telegramdesktop/tdesktop)
-[![Build status](https://ci.appveyor.com/api/projects/status/uiw2y768iy4i5bu8/branch/dev?svg=true)](https://ci.appveyor.com/project/telegramdesktop/tdesktop)
+[![Build Status](https://github.com/telegramdesktop/tdesktop/workflows/Windows./badge.svg)](https://github.com/telegramdesktop/tdesktop/actions)
+[![Build Status](https://github.com/telegramdesktop/tdesktop/workflows/MacOS./badge.svg)](https://github.com/telegramdesktop/tdesktop/actions)
+[![Build Status](https://github.com/telegramdesktop/tdesktop/workflows/Linux./badge.svg)](https://github.com/telegramdesktop/tdesktop/actions)
 
 [![Preview of Telegram Desktop][preview_image]][preview_image_url]
 
@@ -12,20 +13,29 @@ The source code is published under GPLv3 with OpenSSL exception, the license is
 
 ## Supported systems
 
-* Windows XP - Windows 10 (**not** RT)
-* Mac OS X 10.8 - Mac OS X 10.15
-* Mac OS X 10.6 - Mac OS X 10.7 (separate build)
-* Ubuntu 12.04 - Ubuntu 19.04
-* Fedora 22 - Fedora 30
-* [Snappy](https://snapcraft.io/telegram-desktop)
-* [Flathub](https://flathub.org/apps/details/org.telegram.desktop)
+The latest version is available for
+
+* [Windows 7 and above](https://telegram.org/dl/desktop/win) ([portable](https://telegram.org/dl/desktop/win_portable))
+* [macOS 10.12 and above](https://telegram.org/dl/desktop/mac)
+* [OS X 10.10 and 10.11](https://telegram.org/dl/desktop/osx)
+* [Linux static build for 64 bit](https://telegram.org/dl/desktop/linux) ([32 bit](https://telegram.org/dl/desktop/linux32))
+* [Snap](https://snapcraft.io/telegram-desktop)
+* [Flatpak](https://flathub.org/apps/details/org.telegram.desktop)
+
+## Old system versions
+
+Version **1.8.15** was the last that supports older systems
+
+* [Windows XP and Vista](https://updates.tdesktop.com/tsetup/tsetup.1.8.15.exe) ([portable](https://updates.tdesktop.com/tsetup/tportable.1.8.15.zip))
+* [OS X 10.8 and 10.9](https://updates.tdesktop.com/tmac/tsetup.1.8.15.dmg)
+* [OS X 10.6 and 10.7](https://updates.tdesktop.com/tmac32/tsetup32.1.8.15.dmg)
 
 ## Third-party
 
-* Qt 5.3.2 and 5.6.2, slightly patched ([LGPL](http://doc.qt.io/qt-5/lgpl.html))
-* OpenSSL 1.0.1g ([OpenSSL License](https://www.openssl.org/source/license.html))
-* zlib 1.2.8 ([zlib License](http://www.zlib.net/zlib_license.html))
-* libexif 0.6.20 ([LGPL](https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html))
+* Qt 5.12.8, 5.6.2 and 5.3.2 slightly patched ([LGPL](http://doc.qt.io/qt-5/lgpl.html))
+* OpenSSL 1.1.1 and 1.0.1 ([OpenSSL License](https://www.openssl.org/source/license.html))
+* WebRTC ([New BSD License](https://github.com/desktop-app/tg_owt/blob/master/src/LICENSE))
+* zlib 1.2.11 ([zlib License](http://www.zlib.net/zlib_license.html))
 * LZMA SDK 9.20 ([public domain](http://www.7-zip.org/sdk.html))
 * liblzma ([public domain](http://tukaani.org/xz/))
 * Google Breakpad ([License](https://chromium.googlesource.com/breakpad/breakpad/+/master/LICENSE))
@@ -36,18 +46,21 @@ The source code is published under GPLv3 with OpenSSL exception, the license is
 * Opus codec ([BSD License](http://www.opus-codec.org/license/))
 * FFmpeg ([LGPL](https://www.ffmpeg.org/legal.html))
 * Guideline Support Library ([MIT License](https://github.com/Microsoft/GSL/blob/master/LICENSE))
-* Mapbox Variant ([BSD License](https://github.com/mapbox/variant/blob/master/LICENSE))
 * Range-v3 ([Boost License](https://github.com/ericniebler/range-v3/blob/master/LICENSE.txt))
 * Open Sans font ([Apache License 2.0](http://www.apache.org/licenses/LICENSE-2.0.html))
+* Vazir font ([License](https://github.com/rastikerdar/vazir-font/blob/master/LICENSE))
 * Emoji alpha codes ([MIT License](https://github.com/emojione/emojione/blob/master/extras/alpha-codes/LICENSE.md))
 * Catch test framework ([Boost License](https://github.com/philsquared/Catch/blob/master/LICENSE.txt))
 * xxHash ([BSD License](https://github.com/Cyan4973/xxHash/blob/dev/LICENSE))
+* QR Code generator ([MIT License](https://github.com/nayuki/QR-Code-generator#license))
+* CMake ([New BSD License](https://github.com/Kitware/CMake/blob/master/Copyright.txt))
+* Hunspell ([GPL](https://github.com/hunspell/hunspell/blob/master/COPYING))
 
 ## Build instructions
 
 * [Visual Studio 2019][msvc]
-* [Xcode 10][xcode]
-* [GYP/CMake on GNU/Linux][cmake]
+* [Xcode 12][xcode]
+* [CMake on GNU/Linux][cmake]
 
 [//]: # (LINKS)
 [telegram]: https://telegram.org

Telegram/Patches/build_ffmpeg_win.sh

@@ -13,6 +13,8 @@ pacman --noconfirm -S pkg-config
 PKG_CONFIG_PATH="/mingw64/lib/pkgconfig:$PKG_CONFIG_PATH"
 
 ./configure --toolchain=msvc \
+--extra-cflags="-DCONFIG_SAFE_BITSTREAM_READER=1" \
+--extra-cxxflags="-DCONFIG_SAFE_BITSTREAM_READER=1" \
 --extra-ldflags="-libpath:$FullExecPath/../opus/win32/VS2015/Win32/Release" \
 --disable-programs \
 --disable-doc \