Build: macOS library upgrade fixes

* Revert back to OpenMP 9.0.1 due to bug causing cloth physics test to fail.
* Skip flex build on macOS to avoid link error, only reason we build this is
  due to old flex version on Linux CentOS 7.
* Fix PNG cmake argument that expects lowercase on instead of ON.

 Ref T90507, T88438

7 files changed, 46 insertions, 9 deletions

diff --git a/build_files/build_environment/CMakeLists.txt b/build_files/build_environment/CMakeLists.txt
index 3a9574b4b2a..af1653de59a 100644
--- a/build_files/build_environment/CMakeLists.txt
+++ b/build_files/build_environment/CMakeLists.txt
@@ -84,7 +84,7 @@ include(cmake/openimageio.cmake)
 include(cmake/tiff.cmake)
 if(WIN32)
   include(cmake/flexbison.cmake)
-else()
+elseif(UNIX AND NOT APPLE)
   include(cmake/flex.cmake)
 endif()
 include(cmake/osl.cmake)
diff --git a/build_files/build_environment/cmake/ispc.cmake b/build_files/build_environment/cmake/ispc.cmake
index 93fc9dc4846..b1cd2cea0c7 100644
--- a/build_files/build_environment/cmake/ispc.cmake
+++ b/build_files/build_environment/cmake/ispc.cmake
@@ -29,13 +29,13 @@ elseif(APPLE)
   if("${CMAKE_HOST_SYSTEM_PROCESSOR}" STREQUAL "arm64")
     set(ISPC_EXTRA_ARGS_APPLE
       -DBISON_EXECUTABLE=/opt/homebrew/opt/bison/bin/bison
-      -DFLEX_EXECUTABLE=${LIBDIR}/flex/bin/flex
+      -DFLEX_EXECUTABLE=/opt/homebrew/opt/flex/bin/flex
       -DARM_ENABLED=On
     )
   else()
     set(ISPC_EXTRA_ARGS_APPLE
       -DBISON_EXECUTABLE=/usr/local/opt/bison/bin/bison
-      -DFLEX_EXECUTABLE=${LIBDIR}/flex/bin/flex
+      -DFLEX_EXECUTABLE=/usr/local/opt/flex/bin/flex
       -DARM_ENABLED=Off
     )
   endif()
@@ -84,7 +84,7 @@ if(WIN32)
     external_ispc
     external_flexbison
   )
-else()
+elseif(UNIX AND NOT APPLE)
   add_dependencies(
     external_ispc
     external_flex
diff --git a/build_files/build_environment/cmake/openmp.cmake b/build_files/build_environment/cmake/openmp.cmake
index 0e5323ca513..d4d5e69a5ad 100644
--- a/build_files/build_environment/cmake/openmp.cmake
+++ b/build_files/build_environment/cmake/openmp.cmake
@@ -16,12 +16,18 @@
 #
 # ***** END GPL LICENSE BLOCK *****
 
+if(APPLE)
+  set(OPENMP_PATCH_COMMAND ${PATCH_CMD} -p 1 -d ${BUILD_DIR}/openmp/src/external_openmp < ${PATCH_DIR}/openmp.diff)
+else()
+  set(OPENMP_PATCH_COMMAND)
+endif()
 
 ExternalProject_Add(external_openmp
   URL file://${PACKAGE_DIR}/${OPENMP_FILE}
   DOWNLOAD_DIR ${DOWNLOAD_DIR}
   URL_HASH ${OPENMP_HASH_TYPE}=${OPENMP_HASH}
   PREFIX ${BUILD_DIR}/openmp
+  PATCH_COMMAND ${OPENMP_PATCH_COMMAND}
   CMAKE_ARGS -DCMAKE_INSTALL_PREFIX=${LIBDIR}/openmp ${DEFAULT_CMAKE_FLAGS}
   INSTALL_COMMAND cd ${BUILD_DIR}/openmp/src/external_openmp-build && install_name_tool -id @rpath/libomp.dylib runtime/src/libomp.dylib && make install
   INSTALL_DIR ${LIBDIR}/openmp
diff --git a/build_files/build_environment/cmake/osl.cmake b/build_files/build_environment/cmake/osl.cmake
index 05aedb1f085..c20bf68c0ef 100644
--- a/build_files/build_environment/cmake/osl.cmake
+++ b/build_files/build_environment/cmake/osl.cmake
@@ -96,7 +96,7 @@ if(WIN32)
     external_osl
     external_flexbison
   )
-else()
+elseif(UNIX AND NOT APPLE)
   add_dependencies(
     external_osl
     external_flex
diff --git a/build_files/build_environment/cmake/png.cmake b/build_files/build_environment/cmake/png.cmake
index 458d3a1fd98..3fc53b238c2 100644
--- a/build_files/build_environment/cmake/png.cmake
+++ b/build_files/build_environment/cmake/png.cmake
@@ -23,7 +23,7 @@ set(PNG_EXTRA_ARGS
 )
 
 if(BLENDER_PLATFORM_ARM)
-  set(PNG_EXTRA_ARGS ${PNG_EXTRA_ARGS} -DPNG_HARDWARE_OPTIMIZATIONS=ON -DPNG_ARM_NEON=ON -DCMAKE_SYSTEM_PROCESSOR="aarch64")
+  set(PNG_EXTRA_ARGS ${PNG_EXTRA_ARGS} -DPNG_HARDWARE_OPTIMIZATIONS=ON -DPNG_ARM_NEON=on -DCMAKE_SYSTEM_PROCESSOR="aarch64")
 endif()
 
 ExternalProject_Add(external_png
diff --git a/build_files/build_environment/cmake/versions.cmake b/build_files/build_environment/cmake/versions.cmake
index bc220c596c1..d1675bdddfd 100644
--- a/build_files/build_environment/cmake/versions.cmake
+++ b/build_files/build_environment/cmake/versions.cmake
@@ -158,10 +158,18 @@ set(LLVM_HASH 5a4fab4d7fc84aefffb118ac2c8a4fc0)
 set(LLVM_HASH_TYPE MD5)
 set(LLVM_FILE llvm-project-${LLVM_VERSION}.src.tar.xz)
 
-set(OPENMP_URI https://github.com/llvm/llvm-project/releases/download/llvmorg-${LLVM_VERSION}/openmp-${LLVM_VERSION}.src.tar.xz)
-set(OPENMP_HASH ac48ce3e4582ccb82f81ab59eb3fc9dc)
+if(APPLE)
+  # Cloth physics test is crashing due to this bug:
+  # https://bugs.llvm.org/show_bug.cgi?id=50579
+  set(OPENMP_VERSION 9.0.1)
+  set(OPENMP_HASH 6eade16057edbdecb3c4eef9daa2bfcf)
+else()
+  set(OPENMP_VERSION ${LLVM_VERSION})
+  set(OPENMP_HASH ac48ce3e4582ccb82f81ab59eb3fc9dc)
+endif()
+set(OPENMP_URI https://github.com/llvm/llvm-project/releases/download/llvmorg-${OPENMP_VERSION}/openmp-${OPENMP_VERSION}.src.tar.xz)
 set(OPENMP_HASH_TYPE MD5)
-set(OPENMP_FILE openmp-${LLVM_VERSION}.src.tar.xz)
+set(OPENMP_FILE openmp-${OPENMP_VERSION}.src.tar.xz)
 
 set(OPENIMAGEIO_VERSION 2.2.15.1)
 set(OPENIMAGEIO_URI https://github.com/OpenImageIO/oiio/archive/Release-${OPENIMAGEIO_VERSION}.tar.gz)
diff --git a/build_files/build_environment/patches/openmp.diff b/build_files/build_environment/patches/openmp.diff
new file mode 100644
index 00000000000..201ab5c7713
--- /dev/null
+++ b/build_files/build_environment/patches/openmp.diff
@@ -0,0 +1,23 @@
+diff --git a/runtime/src/z_Linux_asm.S b/runtime/src/z_Linux_asm.S
+index 0d8885e..42aa5ad 100644
+--- a/runtime/src/z_Linux_asm.S
++++ b/runtime/src/z_Linux_asm.S
+@@ -1540,10 +1540,12 @@ __kmp_unnamed_critical_addr:
+     .comm .gomp_critical_user_,32,8
+     .data
+     .align 8
+-    .global __kmp_unnamed_critical_addr
+-__kmp_unnamed_critical_addr:
++    .global ___kmp_unnamed_critical_addr
++___kmp_unnamed_critical_addr:
+     .8byte .gomp_critical_user_
+-    .size __kmp_unnamed_critical_addr,8
++#  if !(KMP_OS_DARWIN)
++    .size ___kmp_unnamed_critical_addr,8
++#  endif
+ #endif /* KMP_ARCH_PPC64 || KMP_ARCH_AARCH64 */
+ 
+ #if KMP_OS_LINUX
+
+
+