diff --git a/.github/workflows/on_PR_linux_matrix.yml b/.github/workflows/on_PR_linux_matrix.yml
index 71c69909..21ca38ed 100644
--- a/.github/workflows/on_PR_linux_matrix.yml
+++ b/.github/workflows/on_PR_linux_matrix.yml
@@ -47,8 +47,6 @@ jobs:
           tree install
 
       - name: Test
-        env:
-          EXIV2_EXT: .exe
         run: |
           cd build
           ctest --output-on-failure
diff --git a/.github/workflows/on_PR_linux_special_buils.yml b/.github/workflows/on_PR_linux_special_buils.yml
index 613b4443..838288eb 100644
--- a/.github/workflows/on_PR_linux_special_buils.yml
+++ b/.github/workflows/on_PR_linux_special_buils.yml
@@ -37,8 +37,6 @@ jobs:
           cmake --build .
 
       - name: Tests + Upload coverage
-        env:
-          EXIV2_EXT: .exe
         run: |
           cd build
           ctest --output-on-failure
@@ -85,8 +83,6 @@ jobs:
           cmake --build .
 
       - name: Tests with valgrind
-        env:
-          EXIV2_EXT: .exe
         run: |
           cd build/bin
           valgrind ./unit_tests
@@ -123,8 +119,6 @@ jobs:
           cmake --build .
 
       - name: Tests
-        env:
-          EXIV2_EXT: .exe
         run: |
           cd build
           ctest --output-on-failure
@@ -163,21 +157,3 @@ jobs:
       - name: Generate documentation
         run: |
           make doc
-
-  special_FedoraMinGW:
-    name: 'Fedora MinGW'
-    runs-on: ubuntu-latest
-    container:
-        image: "fedora:latest"
-
-    steps:
-      - uses: actions/checkout@v2
-
-      - name: install dependencies
-        run: |
-            dnf -y upgrade
-            dnf -y install mingw64-gcc-c++ mingw64-filesystem mingw64-expat mingw64-zlib cmake make
-
-      - name: Build
-        run:
-            python3 ci/test_build.py --without-tests --cmake-executable "mingw64-cmake" --cmake-options "-DEXIV2_TEAM_EXTRA_WARNINGS=OFF -DEXIV2_TEAM_WARNINGS_AS_ERRORS=OFF -DEXIV2_ENABLE_WEBREADY=ON -DEXIV2_ENABLE_WIN_UNICODE=ON " --compilers --shared-libs OFF
diff --git a/.github/workflows/on_PR_mac_matrix.yml b/.github/workflows/on_PR_mac_matrix.yml
index 11226eb6..d65f0b57 100644
--- a/.github/workflows/on_PR_mac_matrix.yml
+++ b/.github/workflows/on_PR_mac_matrix.yml
@@ -40,8 +40,6 @@ jobs:
           cmake --build . --target install
 
       - name: Test
-        env:
-          EXIV2_EXT: .exe
         run: |
           cd build
           ctest --output-on-failure
diff --git a/.github/workflows/on_PR_windows_matrix.yml b/.github/workflows/on_PR_windows_matrix.yml
index 9f0180ed..780a8a55 100644
--- a/.github/workflows/on_PR_windows_matrix.yml
+++ b/.github/workflows/on_PR_windows_matrix.yml
@@ -19,7 +19,7 @@ jobs:
         build_type: [Release, Debug]
         shared_libraries: [ON, OFF]
         platform: [ x64, x86 ]
-        
+
     steps:
       - uses: actions/checkout@v2
 
@@ -28,7 +28,7 @@ jobs:
         with:
           arch: ${{matrix.platform}}
 
-      - name: Setup Ninja
+      - name: Set up Ninja
         uses: ashutoshvarma/setup-ninja@master
         with:
           version: 1.10.0
@@ -38,7 +38,7 @@ jobs:
         with:
           python-version: 3.7
 
-      - name: Restore conan cache
+      - name: Restore Conan cache
         uses: actions/cache@v2
         with:
             path: ${{github.workspace}}/conanCache
@@ -68,23 +68,131 @@ jobs:
           conan install .. --build missing
           dir ..
           tree /f ../conanCache
- 
+
       - name: Build
         run: |
-          cd build
-          cmake -GNinja -DCMAKE_BUILD_TYPE=${{matrix.build_type}} -DBUILD_SHARED_LIBS=${{matrix.shared_libraries}} -DEXIV2_ENABLE_NLS=OFF -DEXIV2_ENABLE_PNG=ON -DEXIV2_ENABLE_WEBREADY=ON -DEXIV2_BUILD_UNIT_TESTS=ON -DEXIV2_ENABLE_WIN_UNICODE=OFF -DEXIV2_TEAM_WARNINGS_AS_ERRORS=ON -DEXIV2_ENABLE_BMFF=ON -DCMAKE_INSTALL_PREFIX=install ..
-          ninja
+          cmake -GNinja `
+            -DCMAKE_BUILD_TYPE=${{matrix.build_type}} `
+            -DBUILD_SHARED_LIBS=${{matrix.shared_libraries}} `
+            -DEXIV2_ENABLE_NLS=OFF `
+            -DEXIV2_ENABLE_WIN_UNICODE=OFF `
+            -DEXIV2_ENABLE_WEBREADY=ON `
+            -DEXIV2_ENABLE_BMFF=ON `
+            -DEXIV2_BUILD_UNIT_TESTS=ON `
+            -DEXIV2_TEAM_WARNINGS_AS_ERRORS=ON `
+            -DCMAKE_INSTALL_PREFIX=install `
+            -S . -B build && `
+          cmake --build build
 
       - name: Install
         run: |
           cd build
-          ninja install
+          cmake --install .
           tree /f install
 
       - name: Test
         if: ${{matrix.platform == 'x64'}}
-        env:
-          EXIV2_EXT: .exe
         run: |
-          cd build
-          ctest --output-on-failure
+          ctest --test-dir build --output-on-failure
+
+  msys2:
+    runs-on: windows-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        build_type: [Release, Debug]
+        shared_libraries: [ON, OFF]
+        sys: [MINGW64]
+    name: MSYS2 ${{matrix.sys}} - BuildType:${{matrix.build_type}} - SHARED:${{matrix.shared_libraries}}
+    defaults:
+      run:
+        shell: msys2 {0}
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Set up MSYS2
+        uses: msys2/setup-msys2@v2
+        with:
+          msystem: ${{matrix.sys}}
+          update: true
+          install: >-
+            base-devel
+          pacboy: >-
+            toolchain:p
+            cmake:p
+            ninja:p
+            expat:p
+            gettext:p
+            gtest:p
+            libiconv:p
+            python-lxml:p
+            zlib:p
+
+      - name: Build
+        run: |
+          cmake -GNinja \
+            -DCMAKE_CXX_FLAGS=-Wno-deprecated \
+            -DCMAKE_BUILD_TYPE=${{matrix.build_type}} \
+            -DBUILD_SHARED_LIBS=${{matrix.shared_libraries}} \
+            -DEXIV2_ENABLE_NLS=ON \
+            -DEXIV2_ENABLE_WIN_UNICODE=ON \
+            -DEXIV2_ENABLE_WEBREADY=ON \
+            -DEXIV2_ENABLE_BMFF=ON \
+            -DEXIV2_BUILD_UNIT_TESTS=ON \
+            -S . -B build && \
+          cmake --build build
+
+      - name: Test
+        run: |
+          ctest --test-dir build --output-on-failure
+
+  cygwin:
+    runs-on: windows-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        build_type: [Release]
+        shared_libraries: [ON]
+        platform: [x64]
+    name: Cygwin ${{matrix.platform}} - BuildType:${{matrix.build_type}} - SHARED:${{matrix.shared_libraries}}
+    env:
+      SHELLOPTS: igncr
+    defaults:
+      run:
+        shell: C:\tools\cygwin\bin\bash.exe -eo pipefail '{0}'
+    steps:
+      # Make sure we don't check out scripts using Windows CRLF line endings
+      - run: git config --global core.autocrlf input
+        shell: pwsh
+      - uses: actions/checkout@v2
+
+      - name: Set up Cygwin
+        uses: egor-tensin/setup-cygwin@v3
+        with:
+          platform: ${{matrix.platform}}
+          packages: >-
+            gcc-g++
+            cmake
+            ninja
+            libexpat-devel
+            libxml2-devel
+            libxslt-devel
+            python38-lxml
+            zlib-devel
+      - name: Build
+        run: |
+          cmake -GNinja \
+            -DCMAKE_CXX_FLAGS=-Wno-deprecated \
+            -DCMAKE_BUILD_TYPE=${{matrix.build_type}} \
+            -DBUILD_SHARED_LIBS=${{matrix.shared_libraries}} \
+            -DEXIV2_ENABLE_NLS=OFF \
+            -DEXIV2_ENABLE_WIN_UNICODE=OFF \
+            -DEXIV2_ENABLE_WEBREADY=ON \
+            -DEXIV2_ENABLE_BMFF=ON \
+            -DEXIV2_BUILD_UNIT_TESTS=OFF \
+            -S . -B build && \
+          cmake --build build
+
+      - name: Test
+        run: |
+          ctest --test-dir build --output-on-failure
diff --git a/.github/workflows/on_push_ExtraJobsForMain.yml b/.github/workflows/on_push_ExtraJobsForMain.yml
index 9bb7e7ba..1a5e34f0 100644
--- a/.github/workflows/on_push_ExtraJobsForMain.yml
+++ b/.github/workflows/on_push_ExtraJobsForMain.yml
@@ -38,8 +38,6 @@ jobs:
           make -j
 
       - name: Tests + Upload coverage
-        env:
-          EXIV2_EXT: .exe
         run: |
           cd build
           ctest --output-on-failure