MacOS: define CC, CXX etc. in Conan profile

Author: howetuft

.github/workflows/build.yml

@@ -168,11 +168,11 @@ jobs:
         with:
           script: |
             if ('${{ runner.arch }}' == 'X64') {
-              target = '10.15';
+              target = '13.0';
               arch='x86_64';
             }
             else {
-              target = '12.0';
+              target = '14.2';
               arch='armv8';
             }
             core.exportVariable('MACOSX_DEPLOYMENT_TARGET', target);
@@ -196,6 +196,10 @@ jobs:
         shell: bash
         run: |
             brew install ispc
+            brew install llvm
+            brew install libomp
+            cp -R /usr/local/opt/llvm/Toolchains/LLVM20.xctoolchain /Applications/Xcode_15.2.app/Contents/Developer/Toolchains
+            export PATH=$(brew --prefix llvm)/bin:$PATH
             bash ${{ env.WORKSPACE }}/install-conan.sh
 
       - name: Build (Linux)
@@ -397,10 +401,10 @@ jobs:
           path: conan-cache
           key: deps-${{ matrix.os }}-${{ github.run_id }}
 
-      ## For debugging
-      #- name: Setup tmate session (debug)
-        #if: ${{ failure() }}
-        #uses: mxschmitt/action-tmate@v3
+      # For debugging
+      - name: Setup tmate session (debug)
+        if: ${{ failure() }}
+        uses: mxschmitt/action-tmate@v3
 
       # Upload artifacts
       - uses: actions/upload-artifact@v4

conan-profiles/conan-profile-macOS-ARM64

@@ -19,6 +19,9 @@ minizip-ng/*:with_libcomp=False
 [buildenv]
 CXX=clang++
 CC=clang
+AR=llvm-ar
+RANLIB=llvm-ranlib
+LD=ld.lld
 
 [conf]
 &:tools.build:cxxflags=["-O3"]

conan-profiles/conan-profile-macOS-X64

@@ -2,10 +2,11 @@ include(conan-profile-common)
 
 [settings]
 os=Macos
-os.version=10.15
+# 13.0 is required by libomp
+os.version=13.0
 arch=x86_64
 compiler=apple-clang
-compiler.version=14.0
+compiler.version=15
 compiler.cppstd={{ os.getenv("CXX_VERSION") }}
 compiler.libcxx=libc++
 
@@ -21,8 +22,12 @@ openvdb/*:simd=AVX
 opensubdiv/*:with_metal=False
 
 [buildenv]
-CXX=clang++
-CC=clang
+CXX=/usr/local/opt/llvm/bin/clang++
+CC=/usr/local/opt/llvm/bin/clang
+AR=/usr/local/opt/llvm/bin/llvm-ar
+RANLIB=/usr/local/opt/llvm/bin/llvm-ranlib
+LD=/usr/local/opt/llvm/bin/ld.lld
+#INSTALL=/usr/local/opt/llvm/bin/llvm-install-name-tool
 
 [conf]
 &:tools.build:cxxflags+=["-ftree-vectorize", "-march=x86-64-v3", "-O3", "-mno-avx2"]