Build for osx

.ci_support/osx_64_.yaml

@@ -0,0 +1,23 @@
+MACOSX_DEPLOYMENT_TARGET:
+- '10.13'
+c_compiler:
+- clang
+c_compiler_version:
+- '17'
+channel_sources:
+- conda-forge/label/llvm_rc,conda-forge
+channel_targets:
+- conda-forge llvm_rc
+cxx_compiler:
+- clangxx
+cxx_compiler_version:
+- '17'
+macos_machine:
+- x86_64-apple-darwin13.4.0
+target_platform:
+- osx-64
+zip_keys:
+- - c_compiler_version
+  - cxx_compiler_version
+zlib:
+- '1.2'

conda-forge.yml

@@ -2,6 +2,8 @@ azure:
   settings_win:
     variables:
       SET_PAGEFILE: "True"
+# necessary for osx during rc-phase
+channel_priority: flexible
 conda_forge_output_validation: true
 github:
   branch_name: main

recipe/build.sh

@@ -8,9 +8,18 @@ if [[ "$CONDA_BUILD_CROSS_COMPILATION" == "1" ]]; then
     CMAKE_ARGS="$CMAKE_ARGS -DLLVM_CONFIG_PATH=$BUILD_PREFIX/bin/llvm-config -DMLIR_TABLEGEN_EXE=$BUILD_PREFIX/bin/mlir-tblgen"
 fi
 
+if [[ "${target_platform}" == linux-* ]]; then
+    CMAKE_ARGS="$CMAKE_ARGS -DBUILD_SHARED_LIBS=ON"
+else
+    # unclear segfaults with shared builds on osx
+    CMAKE_ARGS="$CMAKE_ARGS -DBUILD_SHARED_LIBS=OFF"
+    # clang on osx still picks up libstdcxx by default for some reason (unless LLVM_ENABLE_LIBCXX), see
+    # https://github.com/llvm/llvm-project/blob/llvmorg-17.0.0-rc4/llvm/cmake/modules/CheckCompilerVersion.cmake#L66-L88
+    CMAKE_ARGS="$CMAKE_ARGS -DLLVM_ENABLE_LIBCXX=ON"
+fi
+
 cmake -G Ninja \
     ${CMAKE_ARGS} \
-    -DBUILD_SHARED_LIBS=ON \
     -DCMAKE_BUILD_TYPE=Release \
     -DCMAKE_CXX_STANDARD=17 \
     -DCMAKE_EXPORT_COMPILE_COMMANDS=ON \

recipe/conda_build_config.yaml

@@ -1,3 +1,10 @@
+c_compiler_version:            # [osx]
+  - 17                         # [osx]
+cxx_compiler_version:          # [osx]
+  - 17                         # [osx]
+MACOSX_DEPLOYMENT_TARGET:      # [osx and x86_64]
+  - "10.13"                    # [osx and x86_64]
+
 channel_targets:
   - conda-forge llvm_rc
 

recipe/meta.yaml

@@ -16,8 +16,8 @@ source:
 
 build:
   number: 0
-  # intentionally only windows (main target) & linux (debuggability)
-  skip: true  # [osx]
+  # intentionally only x64 builds; win (main target), linux (debuggability)
+  # plus osx to be able to test a consistent llvm stack not just on windows.
   track_features:
     - flang
 
@@ -64,6 +64,8 @@ outputs:
       commands:
         # shared lib on linux
         - test -f $PREFIX/lib/libFortranRuntime.so              # [linux]
+        # static lib on osx (segfaults with shared ones)
+        - test -f $PREFIX/lib/libFortranRuntime.a               # [osx]
         # static lib on win (fails to export symbols for shared build)
         - if not exist %LIBRARY_LIB%\FortranRuntime.lib exit 1  # [win]