Support building on msys/clang64

Author: qmfrederik

.github/workflows/main.yml

@@ -193,7 +193,7 @@ jobs:
       matrix:
         # Build each combination of OS and release/debug variants
         os: [ windows-2019 ]
-        msystem: [ ucrt64, mingw64 ]
+        msystem: [ ucrt64, mingw64, clang64 ]
         build-type: [ Release, Debug ]
         include:
           - msystem: ucrt64
@@ -202,6 +202,8 @@ jobs:
           - msystem: mingw64
             package-prefix: x86_64
             cmake-flags: LDFLAGS="-fuse-ld=lld -lstdc++ -lgcc_s"
+          - msystem: clang64
+            package-prefix: clang-x86_64
       # Don't abort runners if a single one fails
       fail-fast: false
     runs-on: ${{ matrix.os }}
@@ -229,7 +231,14 @@ jobs:
       working-directory: build
       run: |
         ctest -j 4 --output-on-failure -T test
-
+    - name: Install
+      working-directory: build
+      run: |
+        cmake --install . --prefix=../dist
+    - uses: actions/upload-artifact@v4
+      with:
+        name: ${{ matrix.msystem }}-${{ matrix.build-type }}
+        path: dist/
 
   # Fake check that can be used as a branch-protection rule.
   all-checks:

CMakeLists.txt

@@ -20,6 +20,13 @@ endif()
 
 enable_language(OBJC OBJCXX)
 
+if (MINGW)
+	set(CMAKE_IMPORT_LIBRARY_SUFFIX ".dll.a")
+	set(CMAKE_LINK_LIBRARY_SUFFIX "")
+	set(CMAKE_SHARED_LIBRARY_PREFIX "lib")
+	set(CMAKE_OBJCXX_IMPLICIT_INCLUDE_DIRECTORIES ${CMAKE_CXX_IMPLICIT_INCLUDE_DIRECTORIES})
+endif ()
+
 INCLUDE (CheckCXXSourceCompiles)
 INCLUDE (FetchContent)
 
@@ -301,6 +308,9 @@ if (NOT CMAKE_INSTALL_LIBDIR)
 	set(CMAKE_INSTALL_LIBDIR lib)
 endif ()
 
+if (NOT CMAKE_INSTALL_BINDIR)
+	set(CMAKE_INSTALL_BINDIR bin)
+endif ()
 
 set(GNUSTEP_INSTALL_TYPE ${DEFAULT_INSTALL_TYPE} CACHE STRING
 	"GNUstep installation type.  Options are NONE, SYSTEM, NETWORK or LOCAL.")