From 6ee7ae137cfa2fd75c63b18722a2f176d6ec35a8 Mon Sep 17 00:00:00 2001
From: Adrian Price-Whelan <583379+adrn@users.noreply.github.com>
Date: Tue, 14 Oct 2025 11:09:52 -0400
Subject: [PATCH] add a conditional disable of passing openmp flags on mac with
 clang

---
 expui/CMakeLists.txt | 6 +++++-
 pyEXP/CMakeLists.txt | 6 +++++-
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/expui/CMakeLists.txt b/expui/CMakeLists.txt
index 25f438d0a..0ccf07d9b 100644
--- a/expui/CMakeLists.txt
+++ b/expui/CMakeLists.txt
@@ -58,6 +58,10 @@ add_executable(testread   testread.cc)
 foreach(program ${bin_PROGRAMS})
   target_link_libraries(${program} expui exputil ${common_LINKLIB})
   target_include_directories(${program} PUBLIC ${common_INCLUDE})
-  target_compile_options(${program} PUBLIC ${OpenMP_CXX_FLAGS})
+  # TODO: Should find a proper solution for this, but for now, don't add OpenMP compile
+  # options if compiling on macOS with Clang
+  if(NOT (APPLE AND CMAKE_CXX_COMPILER_ID STREQUAL "AppleClang"))
+    target_compile_options(${program} PUBLIC ${OpenMP_CXX_FLAGS})
+  endif()
   install(TARGETS ${program} DESTINATION bin)
 endforeach()
diff --git a/pyEXP/CMakeLists.txt b/pyEXP/CMakeLists.txt
index dc8cebf0e..8d8f24d1f 100644
--- a/pyEXP/CMakeLists.txt
+++ b/pyEXP/CMakeLists.txt
@@ -40,7 +40,11 @@ pybind11_add_module(pyEXP PyWrappers.cc CoefWrappers.cc
   ParticleReaderWrappers.cc MSSAWrappers.cc EDMDWrappers.cc)
 target_link_libraries(pyEXP PUBLIC expui exputil ${common_LINKLIB})
 target_include_directories(pyEXP PUBLIC ${common_INCLUDE})
-target_compile_options(pyEXP PUBLIC ${OpenMP_CXX_FLAGS})
+# TODO: Should find a proper solution for this, but for now, don't add OpenMP compile
+# options if compiling on macOS with Clang
+if(NOT (APPLE AND CMAKE_CXX_COMPILER_ID STREQUAL "AppleClang"))
+  target_compile_options(pyEXP PUBLIC ${OpenMP_CXX_FLAGS})
+endif()
 get_target_property(cxxflags pyEXP COMPILE_OPTIONS)
 message("The project has set the following flags: ${cxxflags}")