feat(ci): build and use kimageformats plugins

appveyor.yml

@@ -1,24 +1,49 @@
 environment:
+  CMAKE_INSTALL_ROOT: C:\projects\cmake
   matrix:
     - build_name: mingw73_32_qt5_12_6
       QTPATH: C:\Qt\5.12.6\mingw73_32
       MINGW32: C:\Qt\Tools\mingw730_32
 
 install:
+  - mkdir %CMAKE_INSTALL_ROOT%
   - cd %APPVEYOR_BUILD_FOLDER%
   - git submodule update --init --recursive
-  - set PATH=%PATH%;%QTPATH%\bin;%MINGW32%\bin
+  - set PATH=%PATH%;%CMAKE_INSTALL_ROOT%;%QTPATH%\bin;%MINGW32%\bin
 
 build_script:
+# prepare
+  - mkdir 3rdparty
+  - cinst ninja
+# install ECM so we can build KImageFormats
+  - cd 3rdparty
+  - git clone -q git://anongit.kde.org/extra-cmake-modules.git
+  - cd extra-cmake-modules
+  - cmake -G "Ninja" . -DCMAKE_INSTALL_PREFIX=%CMAKE_INSTALL_ROOT%
+  - cmake --build .
+  - cmake --build . --target install
+  - cd %APPVEYOR_BUILD_FOLDER%
+# install KImageFormats
+  - cd 3rdparty
+  - git clone git://anongit.kde.org/kimageformats.git
+  - cd kimageformats
   - mkdir build
   - cd build
-  - cmake -G "Unix Makefiles" -DCMAKE_MAKE_PROGRAM=mingw32-make -DCMAKE_INSTALL_PREFIX='%cd%' ..\
+  - cmake .. -G "Unix Makefiles" -DCMAKE_BUILD_TYPE=Release -DCMAKE_CXX_FLAGS_RELEASE="-s" -DCMAKE_MAKE_PROGRAM=mingw32-make -DQT_PLUGIN_INSTALL_DIR=%QTPATH%\plugins
+  - cmake --build . --config Release
+  - cmake --build . --config Release --target install
+  - cd %APPVEYOR_BUILD_FOLDER%
+# finally...
+  - mkdir build
+  - cd build
+  - cmake .. -G "Unix Makefiles" -DCMAKE_BUILD_TYPE=Release -DCMAKE_MAKE_PROGRAM=mingw32-make -DCMAKE_INSTALL_PREFIX='%cd%'
   - mingw32-make
   - mingw32-make install
 # fixme: I don't know how to NOT make the binary installed to the ./bin/ folder...
   - cd bin
-  - windeployqt --no-quick-import --no-translations --no-opengl-sw --no-angle --no-system-d3d-compiler --release .\ppic.exe
-  - tree
+  - windeployqt --verbose=2 --no-quick-import --no-translations --no-opengl-sw --no-angle --no-system-d3d-compiler --release .\ppic.exe
+# for debug..
+  - tree /f
 
 artifacts:
   - path: build\bin