try to fix macos problems

.github/workflows/cmake.yml

@@ -15,7 +15,13 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-latest, macos-latest, windows-latest]
+        include:
+        - os: ubuntu-latest
+          compiler: g++
+        - os: macos-latest
+          compiler: clang++
+        - os: windows-latest
+          compiler: cl
     runs-on: ${{ matrix.os }}
 
     steps:
@@ -29,8 +35,10 @@ jobs:
     - name: Configure CMake
       shell: bash
       working-directory: ${{github.workspace}}/build
-      run: cmake $GITHUB_WORKSPACE -DCMAKE_BUILD_TYPE=$BUILD_TYPE -DCMAKE_CXX_STANDARD=11
-
+      env:
+        CXX: ${{ matrix.compiler }}
+      run: cmake $GITHUB_WORKSPACE -DCMAKE_CXX_COMPILER=${{ matrix.compiler }} -DCMAKE_BUILD_TYPE=$BUILD_TYPE -DCMAKE_CXX_STANDARD=11
+
     - name: Build
       working-directory: ${{github.workspace}}/build
       shell: bash

CMakeLists.txt

@@ -54,6 +54,10 @@ if(MSVC)
   add_definitions(-DNOMINMAX -D_USE_MATH_DEFINES -DWIN32_LEAN_AND_MEAN)
 endif()
 
+if (APPLE AND CMAKE_CXX_COMPILER_ID MATCHES "Clang")	
+  add_definitions(-D_DARWIN_C_SOURCE -D_XOPEN_SOURCE=600)
+endif()
+
 add_executable(${PROJECT_NAME} ${MAIN_SOURCES} ${PROJECT_SOURCE_DIR}/src/Main.cpp )
 target_include_directories(${PROJECT_NAME} PRIVATE "${PROJECT_SOURCE_DIR}/include" ${TBB_INCLUDE_DIR} ${VCG_INCLUDE_DIR} ${EIGEN_INCLUDE_DIR} ${SOL2_INCLUDE_DIR} ${LUA_INCLUDE_DIRS})
 target_link_libraries(${PROJECT_NAME} PRIVATE igl::core tbb Threads::Threads ${LUA_LIBRARIES})

azure-pipelines.yml

@@ -14,20 +14,12 @@ variables:
 
 strategy:
   matrix:
-    Linux14:
+    Linux11:
       vmImage: 'ubuntu-latest'
-    macOS17:
-      vmImage: 'macOS-latest'
-      build_std: 17
     macOS11:
       vmImage: 'macOS-latest'
-      build_std: 11
-    Windows17:
-      vmImage: 'windows-latest'
-      build_std: 17
     Windows11:
       vmImage: 'windows-latest'
-      build_std: 11
 pool:
   vmImage: $(vmImage)
 steps: