Add appveyor support for mingw64 builds

appveyor.yml

@@ -2,6 +2,9 @@
 clone_depth: 5
 
 environment:
+  matrix:
+    - BUILD_TYPE: mingw
+    - BUILD_TYPE: msvc
   BUILD_PASSWORD:
     secure: EXGNlWKJsCtbeImEJ5EP9qrxZ+EqUFfNy+CP61nDOMA=
 
@@ -19,25 +22,63 @@ configuration:
 
 install:
   - git submodule update --init --recursive
+  - ps: >
+        if ($env:BUILD_TYPE -eq 'mingw') {
+          # redirect err to null to prevent warnings from becoming errors
+          # workaround for cyclical dependancies
+          C:\msys64\usr\bin\bash -lc "pacman --noconfirm -S mingw64/mingw-w64-x86_64-freetype mingw64/mingw-w64-x86_64-fontconfig" 2> $null
+          C:\msys64\usr\bin\bash -lc "pacman --noconfirm -S mingw64/mingw-w64-x86_64-cmake mingw64/mingw-w64-x86_64-qt5 mingw64/mingw-w64-x86_64-SDL2" 2> $null
+        }
 
 before_build:
-  - mkdir build
-  - cd build
-  - cmake -G "Visual Studio 14 2015 Win64" -DCITRA_USE_BUNDLED_QT=1 -DCITRA_USE_BUNDLED_SDL2=1 ..
+  - mkdir %BUILD_TYPE%build
+  - cd %BUILD_TYPE%build
+  - ps: >
+        if ($env:BUILD_TYPE -eq 'msvc') {
+          cmake -G "Visual Studio 14 2015 Win64" -DCITRA_USE_BUNDLED_QT=1 -DCITRA_USE_BUNDLED_SDL2=1 ..
+        } else {
+          $old_path = $env:Path
+          # Change path to just include the mingw gcc and *not* sh.exe (which breaks things when using MinGW Makefiles)
+          $env:Path = "C:\msys64\mingw64\bin\;"
+          # make sure error output from this command isn't interpreted as an error in powershell
+          C:\Windows\System32\cmd /c 'C:\msys64\mingw64\bin\cmake -G "MinGW Makefiles" -DCMAKE_BUILD_TYPE=Release -DQt5_DIR=C:/msys64/mingw64/qt5/lib/cmake/Qt5/ -DSDL2_INCLUDE_DIR=C:/msys64/mingw64/include/SDL2/ -DSDL2_LIBRARY=C:/msys64/mingw64/bin/SDL2.dll .. 2>&1'
+          $env:Path = $old_path
+        }
   - cd ..
 
-build:
-  project: build/citra.sln
-  parallel: true
+build_script:
+  - ps: >
+        if ($env:BUILD_TYPE -eq 'msvc') {
+          # https://www.appveyor.com/docs/build-phase
+          msbuild msvcbuild/citra.sln /maxcpucount /logger:"C:\Program Files\AppVeyor\BuildAgent\Appveyor.MSBuildLogger.dll"
+        } else {
+          $env:Path = "C:\msys64\mingw64\bin\;" + $env:Path
+          C:\Windows\System32\cmd /c "C:\msys64\mingw64\bin\mingw32-make -C mingwbuild/ -j${env:NUMBER_OF_PROCESSORS} 2>&1"
+        }
 
 test_script:
-  - cd build && ctest -VV -C Release && cd ..
+  - cd %BUILD_TYPE%build && ctest -VV -C Release && cd ..
+
+after_build:
+  - ps: >
+        if ($env:BUILD_TYPE -eq 'mingw') {
+          cmd /c "7z a citra.7z ${env:APPVEYOR_BUILD_FOLDER}\mingwbuild\src\citra\citra.exe ${env:APPVEYOR_BUILD_FOLDER}\mingwbuild\src\citra_qt\citra-qt.exe"
+          cd C:\msys64\mingw64\bin
+          cmd /c "7z a ${env:APPVEYOR_BUILD_FOLDER}\citra.7z Qt5Core.dll Qt5Widgets.dll Qt5Gui.dll Qt5OpenGL.dll"
+          cmd /c "7z a ${env:APPVEYOR_BUILD_FOLDER}\citra.7z libbz2-1.dll libicudt56.dll libicuin56.dll libicuuc56.dll libffi-6.dll libfreetype-6.dll libgcc_s_seh-1.dll libglib-2.0-0.dll libgobject-2.0-0.dll libgraphite2.dll libiconv-2.dll libharfbuzz-0.dll libintl-8.dll libpcre-1.dll libpcre16-0.dll libpng16-16.dll libstdc++-6.dll libwinpthread-1.dll SDL2.dll zlib1.dll"
+          cd C:\msys64\mingw64\share\qt5
+          cmd /c "7z a ${env:APPVEYOR_BUILD_FOLDER}\citra.7z plugins\platforms\qwindows.dll"
+          cd ${env:APPVEYOR_BUILD_FOLDER}
+        }
+
+artifacts:
+  - path: citra.7z
+    name: CitraGCC
 
 on_success:
     # copying the needed QT Dlls is now done post build. See the CMakeLists.txt file in the citra-qt folder
   - ps: >
-        if (!"$env:APPVEYOR_PULL_REQUEST_TITLE" -and ("$env:APPVEYOR_REPO_BRANCH" -eq "master"))
-          {
+        if (!"$env:APPVEYOR_PULL_REQUEST_TITLE" -and ("$env:APPVEYOR_REPO_BRANCH" -eq "master")) {
             $GITDATE = $(git show -s --date=short --format='%ad') -replace "-",""
             $GITREV = $(git show -s --format='%h')
             # Where are these spaces coming from? Regardless, let's remove them
@@ -56,8 +97,6 @@ on_success:
             7z a $BUILD_NAME .\build\bin\release\* .\license.txt .\README.md
             # Do a second archive with only the binaries (excludes dlls) and documentation
             7z a $BUILD_NAME_NOQT .\build\bin\release\*.exe .\license.txt .\README.md
-
-
             # Download WinSCP and upload to server
             choco install winscp.portable
             WinSCP.exe /command `