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[OpenMP] [cmake] Don't use -fno-semantic-interposition on Windows (#81113)

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This was added in 4b7beab418. When the
flag was added implicitly elsewhere, it was added via
llvm/cmake/modules/HandleLLVMOptions.cmake, where it wasn't added on
Windows/Cygwin targets.

This avoids one warning per object file in OpenMP.

(cherry picked from commit 72f04fa0734f8559ad515f507a4a3ce3f461f196)
This commit is contained in:
Martin Storsjö 2024-02-08 15:28:46 +02:00 committed by Tom Stellard
parent 38c5b352c6
commit d7c6794aff
1 changed files with 5 additions and 1 deletions
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6
openmp/cmake/HandleOpenMPOptions.cmake
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@ -46,7 +46,11 @@ append_if(OPENMP_HAVE_WEXTRA_FLAG "-Wno-extra" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
append_if(OPENMP_HAVE_WPEDANTIC_FLAG "-Wno-pedantic" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
append_if(OPENMP_HAVE_WMAYBE_UNINITIALIZED_FLAG "-Wno-maybe-uninitialized" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
append_if(OPENMP_HAVE_NO_SEMANTIC_INTERPOSITION "-fno-semantic-interposition" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
if (NOT (WIN32 OR CYGWIN))
# This flag is not relevant on Windows; the flag is accepted, but produces warnings
# about argument unused during compilation.
append_if(OPENMP_HAVE_NO_SEMANTIC_INTERPOSITION "-fno-semantic-interposition" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
endif()
append_if(OPENMP_HAVE_FUNCTION_SECTIONS "-ffunction-section" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
append_if(OPENMP_HAVE_DATA_SECTIONS "-fdata-sections" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)