Fixed MinGW with shared libs (#583)

.github/workflows/vcpkg.yml

@@ -29,25 +29,40 @@ jobs:
         os: [windows-2019, windows-2022]
         build_type: [x64-Debug-VCPKG]
         arch: [amd64]
+        shared: [OFF]
         include:
           - os: windows-2022
             build_type: x64-Debug-Clang-VCPKG
             arch: amd64
+            shared: OFF
           - os: windows-2022
             build_type: x86-Debug-VCPKG
             arch: amd64_x86
+            shared: OFF
           - os: windows-2022
             build_type: arm64-Debug-VCPKG
             arch: amd64_arm64
+            shared: OFF
           - os: windows-2022
             build_type: arm64ec-Debug-VCPKG
             arch: amd64_arm64
+            shared: OFF
           - os: windows-2022
             build_type: x64-Debug-MinGW
             arch: amd64
+            shared: OFF
           - os: windows-2022
             build_type: x64-Release-MinGW
             arch: amd64
+            shared: OFF
+          - os: windows-2022
+            build_type: x64-Debug-MinGW
+            arch: amd64
+            shared: ON
+          - os: windows-2022
+            build_type: x64-Release-MinGW
+            arch: amd64
+            shared: ON
 
     steps:
     - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
@@ -120,6 +135,7 @@ jobs:
       working-directory: ${{ github.workspace }}
       run: >
         cmake --preset=${{ matrix.build_type }} -DBUILD_TESTING=OFF -DENABLE_OPENEXR_SUPPORT=ON -DENABLE_LIBJPEG_SUPPORT=ON -DENABLE_LIBPNG_SUPPORT=ON
+        -DBUILD_SHARED_LIBS=${{ matrix.shared }}
         -DCMAKE_TOOLCHAIN_FILE="${{ github.workspace }}/vcpkg/scripts/buildsystems/vcpkg.cmake" -DVCPKG_MANIFEST_DIR="${{ github.workspace }}/build"
         -DVCPKG_TARGET_TRIPLET="${env:VCPKG_DEFAULT_TRIPLET}"
 

CMakeLists.txt

@@ -581,6 +581,10 @@ if(CMAKE_CXX_COMPILER_ID MATCHES "Clang|IntelLLVM")
 elseif(CMAKE_CXX_COMPILER_ID MATCHES "GNU")
     foreach(t IN LISTS TOOL_EXES ITEMS ${PROJECT_NAME})
       target_compile_options(${t} PRIVATE "-Wno-ignored-attributes" "-Walloc-size-larger-than=4GB")
+
+      if(BUILD_SHARED_LIBS)
+        target_compile_options(${t} PRIVATE "-Wno-attributes")
+      endif()
     endforeach()
 elseif(CMAKE_CXX_COMPILER_ID MATCHES "Intel")
     set_target_properties(${PROJECT_NAME} PROPERTIES CXX_STANDARD 14)