diff --git a/.github/workflows/linux.yaml b/.github/workflows/linux.yaml
new file mode 100644
index 000000000..bd219db51
--- /dev/null
+++ b/.github/workflows/linux.yaml
@@ -0,0 +1,55 @@
+name: linux
+on:
+  push:
+  pull_request:
+
+jobs:
+  build:
+    name: ${{ matrix.config.name }}
+    runs-on: ubuntu-latest
+    env:
+      SHELL: bash
+      GTK: ${{ matrix.config.gtk }}
+      CC: ccache gcc
+      CXX: ccache g++
+    strategy:
+      fail-fast: false
+      matrix:
+        config:
+        - name: Ubuntu-GTK3
+          gtk: GTK3
+        - name: Ubuntu-GTK2
+          gtk: GTK2
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v2
+
+    - name: Dependencies
+      run: |
+        exec bash "scripts/dependencies.sh"
+    
+    - name: Configure
+      run: |
+        exec bash "scripts/configure.sh"
+
+    - name: "Set up compiler cache"
+      uses: actions/cache@v2
+      with:
+        path: "~/.ccache"
+        key: ${{ matrix.config.os }}-${{ matrix.config.gtk }}-${{ github.head_ref }}-${{ github.run_number }}
+        restore-keys: |
+          ${{ matrix.config.os }}-${{ matrix.config.gtk }}-${{ github.head_ref }}-
+
+    - name: Build
+      run: |
+        exec bash "scripts/build.sh"
+
+    - name: Upload artifact
+      uses: actions/upload-artifact@v2
+      with:
+        name: Male-Poon_${{matrix.config.name}}
+        path: |
+          obj-x86_64-pc-linux-gnu/dist/malepoon-*
+          LICENSE
+        if-no-files-found: error
+    
diff --git a/.github/workflows/windows.yaml b/.github/workflows/windows.yaml
new file mode 100644
index 000000000..d064ad84c
--- /dev/null
+++ b/.github/workflows/windows.yaml
@@ -0,0 +1,58 @@
+name: windows
+on:
+  push:
+  pull_request:
+
+jobs:
+  build:
+    name: ${{ matrix.config.name }}
+    runs-on: windows-latest
+    env:
+      WIN: ${{ matrix.config.win }}
+    strategy:
+      fail-fast: false
+      matrix:
+        config:
+        - name: Windows-Win64
+          win: WIN64
+          arch: amd64
+
+        - name: Windows-Win32
+          win: WIN32
+          arch: x86
+    
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v2
+
+    - name: "MSVC Developer Command Prompt"
+      uses: seanmiddleditch/gha-setup-vsdevenv@v3
+      with:
+        arch: ${{ matrix.config.arch }}
+
+
+    - name: Dependencies
+      run: |
+        Invoke-WebRequest -Uri https://ftp.mozilla.org/pub/mozilla/libraries/win32/MozillaBuildSetup-2.2.0.exe -OutFile MozillaBuildSetup-2.2.0.exe
+        ./scripts/InstallMozillaBuild.ps1
+      shell: pwsh
+    
+    - name: Configure
+      run: |
+        scripts/configure.sh
+      shell: bash
+
+    - name: Build
+      run: |
+        scripts/build.sh
+      shell: bash
+
+    - name: Upload artifact
+      uses: actions/upload-artifact@v2
+      with:
+        name: Male-Poon_${{matrix.config.name}}
+        path: |
+          obj-*/dist/malepoon-*
+          LICENSE
+        if-no-files-found: error
+    
diff --git a/mach b/mach
index 0fbedf463..278f5f87e 100755
--- a/mach
+++ b/mach
@@ -1,4 +1,3 @@
 #!/bin/sh
-
 MACH_CMD=./platform/mach
 $MACH_CMD $@
diff --git a/malepoon/configure.in b/malepoon/configure.in
index 1c1b75081..e60bebc6b 100644
--- a/malepoon/configure.in
+++ b/malepoon/configure.in
@@ -7,6 +7,8 @@ dnl file, You can obtain one at http://mozilla.org/MPL/2.0/.
 dnl Things we need to carry from confvars.sh
 AC_DEFINE(MOZ_PHOENIX)
 AC_SUBST(MOZ_PHOENIX)
+AC_DEFINE(MOZ_PHOENIX_EXTENSIONS)
+AC_SUBST(MOZ_PHOENIX_EXTENSIONS)
 AC_DEFINE(MC_PALEMOON)
 AC_SUBST(MC_PALEMOON)
 
diff --git a/malepoon/confvars.sh b/malepoon/confvars.sh
index ede36c5fa..ae6bcec85 100644
--- a/malepoon/confvars.sh
+++ b/malepoon/confvars.sh
@@ -42,6 +42,7 @@ MC_PALEMOON=1
 # Enables conditional code in the platform for historically
 # Firefox-like browsers
 MOZ_PHOENIX=1
+MOZ_PHOENIX_EXTENSIONS=1
 
 # Lightweight Themes
 MOZ_PERSONAS=1
diff --git a/scripts/InstallMozillaBuild.ps1 b/scripts/InstallMozillaBuild.ps1
new file mode 100644
index 000000000..e7b7f607c
--- /dev/null
+++ b/scripts/InstallMozillaBuild.ps1
@@ -0,0 +1 @@
+& .\MozillaBuildSetup-2.2.0.exe /S /v/qn | Write-Output
diff --git a/scripts/build.sh b/scripts/build.sh
new file mode 100644
index 000000000..f061a85e2
--- /dev/null
+++ b/scripts/build.sh
@@ -0,0 +1,7 @@
+#!/bin/bash
+BASH="bash"
+if [[ ! -z $WIN ]]; then
+    BASH=/c/mozilla-build/start-shell.bat
+fi
+$BASH mach build
+$BASH mach package
diff --git a/scripts/configure.sh b/scripts/configure.sh
new file mode 100644
index 000000000..30de567f0
--- /dev/null
+++ b/scripts/configure.sh
@@ -0,0 +1,12 @@
+#!/bin/bash
+git submodule init && git submodule update
+
+if [ $GTK == "GTK3" ]; then
+  cp scripts/mozconfig-gtk3 .mozconfig
+elif [ $GTK == "GTK2" ]; then
+  cp scripts/mozconfig-gtk2 .mozconfig
+elif [ $WIN == "WIN32"]; then
+  cp scripts/mozconfig-win32 .mozconfig
+else
+  cp scripts/mozconfig-win64 .mozconfig
+fi
diff --git a/scripts/dependencies.sh b/scripts/dependencies.sh
new file mode 100644
index 000000000..427d2b710
--- /dev/null
+++ b/scripts/dependencies.sh
@@ -0,0 +1,16 @@
+#!/bin/bash
+if [[ ! -z "${GTK}" ]]; then
+  sudo apt-get update && sudo apt-get upgrade -y
+  sudo apt-get install ccache -y
+  if [ $GTK == "GTK3" ]; then
+    sudo apt-get install build-essential libgtk2.0-dev libdbus-glib-1-dev autoconf2.13 \
+    yasm libegl1-mesa-dev libasound2-dev libxt-dev zlib1g-dev libssl-dev \
+    libsqlite3-dev libbz2-dev libpulse-dev libgconf2-dev libx11-xcb-dev \
+    zip python2.7 python-dbus libgtk-3-dev -y
+  elif [ $GTK == "GTK2" ]; then
+    sudo apt-get install build-essential libgtk2.0-dev libdbus-glib-1-dev autoconf2.13 \
+    yasm libegl1-mesa-dev libasound2-dev libxt-dev zlib1g-dev libssl-dev \
+    libsqlite3-dev libbz2-dev libpulse-dev libgconf2-dev libx11-xcb-dev \
+    zip python2.7 python-dbus -y
+  fi
+fi
diff --git a/scripts/mozconfig-gtk2 b/scripts/mozconfig-gtk2
new file mode 100644
index 000000000..e38538c9b
--- /dev/null
+++ b/scripts/mozconfig-gtk2
@@ -0,0 +1,31 @@
+_BUILD_64=1
+
+_GTK_VERSION=2
+
+ac_add_options --enable-application=malepoon
+ac_add_options --enable-optimize="-O3 -w"
+ac_add_options --enable-default-toolkit=cairo-gtk$_GTK_VERSION
+ac_add_options --enable-jemalloc
+ac_add_options --enable-strip
+ac_add_options --enable-devtools
+ac_add_options --enable-av1
+ac_add_options --disable-eme
+ac_add_options --disable-webrtc
+ac_add_options --disable-gamepad
+ac_add_options --disable-tests
+ac_add_options --disable-debug
+ac_add_options --disable-necko-wifi
+ac_add_options --disable-updater
+ac_add_options --with-pthreads
+
+ac_add_options --enable-official-branding
+export MOZILLA_OFFICIAL=1
+
+if [ -n "$_BUILD_64" ]; then
+  ac_add_options --x-libraries=/usr/lib64
+else
+  ac_add_options --x-libraries=/usr/lib
+fi
+
+export MOZ_PKG_SPECIAL=gtk$_GTK_VERSION
+
diff --git a/scripts/mozconfig-gtk3 b/scripts/mozconfig-gtk3
new file mode 100644
index 000000000..85b6c3ff6
--- /dev/null
+++ b/scripts/mozconfig-gtk3
@@ -0,0 +1,31 @@
+_BUILD_64=1
+
+_GTK_VERSION=3
+
+ac_add_options --enable-application=malepoon
+ac_add_options --enable-optimize="-O3 -w"
+ac_add_options --enable-default-toolkit=cairo-gtk$_GTK_VERSION
+ac_add_options --enable-jemalloc
+ac_add_options --enable-strip
+ac_add_options --enable-devtools
+ac_add_options --enable-av1
+ac_add_options --disable-eme
+ac_add_options --disable-webrtc
+ac_add_options --disable-gamepad
+ac_add_options --disable-tests
+ac_add_options --disable-debug
+ac_add_options --disable-necko-wifi
+ac_add_options --disable-updater
+ac_add_options --with-pthreads
+
+ac_add_options --enable-official-branding
+export MOZILLA_OFFICIAL=1
+
+if [ -n "$_BUILD_64" ]; then
+  ac_add_options --x-libraries=/usr/lib64
+else
+  ac_add_options --x-libraries=/usr/lib
+fi
+
+export MOZ_PKG_SPECIAL=gtk$_GTK_VERSION
+
diff --git a/scripts/mozconfig-win32 b/scripts/mozconfig-win32
new file mode 100644
index 000000000..41875d531
--- /dev/null
+++ b/scripts/mozconfig-win32
@@ -0,0 +1,27 @@
+_BUILD_64=
+
+ac_add_options --enable-application=malepoon
+ac_add_options --enable-optimize="-O2 -GS-"
+ac_add_options --enable-jemalloc
+ac_add_options --enable-strip
+ac_add_options --enable-devtools
+ac_add_options --enable-av1
+ac_add_options --disable-accessibility
+ac_add_options --disable-eme
+ac_add_options --disable-webrtc
+ac_add_options --disable-gamepad
+ac_add_options --disable-parental-controls
+ac_add_options --disable-tests
+ac_add_options --disable-debug
+ac_add_options --disable-updater
+
+ac_add_options --enable-official-branding
+export MOZILLA_OFFICIAL=1
+
+if [ -n "$_BUILD_64" ]; then
+  _BUILD_ARCH=x64
+  ac_add_options --target=x86_64-pc-mingw32
+  ac_add_options --host=x86_64-pc-mingw32
+else
+  _BUILD_ARCH=x86
+fi
\ No newline at end of file
diff --git a/scripts/mozconfig-win64 b/scripts/mozconfig-win64
new file mode 100644
index 000000000..37ad16821
--- /dev/null
+++ b/scripts/mozconfig-win64
@@ -0,0 +1,31 @@
+_BUILD_64=1
+
+ac_add_options --enable-application=malepoon
+ac_add_options --enable-optimize="-O2 -GS-"
+ac_add_options --enable-jemalloc
+ac_add_options --enable-strip
+ac_add_options --enable-devtools
+ac_add_options --enable-av1
+ac_add_options --disable-accessibility
+ac_add_options --disable-eme
+ac_add_options --disable-webrtc
+ac_add_options --disable-gamepad
+ac_add_options --disable-parental-controls
+ac_add_options --disable-tests
+ac_add_options --disable-debug
+ac_add_options --disable-updater
+
+ac_add_options --enable-official-branding
+export MOZILLA_OFFICIAL=1
+
+if [ -n "$_BUILD_64" ]; then
+  _BUILD_ARCH=x64
+  ac_add_options --target=x86_64-pc-mingw32
+  ac_add_options --host=x86_64-pc-mingw32
+else
+  _BUILD_ARCH=x86
+fi
+
+WIN32_REDIST_DIR=$VCINSTALLDIR/redist/$_BUILD_ARCH/Microsoft.VC140.CRT
+WIN_UCRT_REDIST_DIR="C:/Program Files (x86)/Windows Kits/10/Redist/10.0.19041.0/ucrt/DLLs/$_BUILD_ARCH"
+