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CheckSupportSSE2: Fix sse flags unexpected propagation #1721

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merged 2 commits into from
Dec 3, 2022
Merged

CheckSupportSSE2: Fix sse flags unexpected propagation #1721

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d994e43
CheckSupportSSE2: Fix sse flags unexpected propagation
FantasqueX Nov 8, 2022
b04457b
Merge branch 'main' into required-flags-1
doug-walker Dec 3, 2022
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5 changes: 5 additions & 0 deletions share/cmake/utils/CheckSupportSSE2.cmake
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Original file line number Diff line number Diff line change
Expand Up @@ -3,6 +3,8 @@

include(CheckCXXSourceCompiles)

set(_cmake_required_flags_old "${CMAKE_REQUIRED_FLAGS}")

if(NOT CMAKE_SIZE_OF_VOID_P EQUAL 8)
# As CheckCXXCompilerFlag implicitly uses CMAKE_CXX_FLAGS some custom flags could trigger
# unrelated warnings causing a detection failure. So, the code disables all warnings to focus
Expand All @@ -27,4 +29,7 @@ check_cxx_source_compiles ("
}"
HAVE_SSE2)

set(CMAKE_REQUIRED_FLAGS "${_cmake_required_flags_old}")
unset(_cmake_required_flags_old)

mark_as_advanced(HAVE_SSE2)