Disable unwantd FMAs with clang 14

Fixes #375
mmp · Sep 18, 2023 · 323da4d · 323da4d
1 parent 83e4599
commit 323da4d
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/CMakeLists.txt b/CMakeLists.txt
@@ -125,6 +125,11 @@ else ()
   message (STATUS "Found -lprofiler: ${PROFILE_LIB}")
 endif ()
 
+if (CMAKE_CXX_COMPILER_ID MATCHES "Clang" AND CMAKE_CXX_COMPILER_VERSION GREATER_EQUAL 14)
+  message (STATUS "Disabling -ffp-contract (thanks, clang 14!)")
+  list (APPEND PBRT_CXX_FLAGS "-ffp-contract=off")
+endif ()
+
 add_library (pbrt_warnings INTERFACE)
 target_compile_options (
     pbrt_warnings