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Fixed replacement of -O3 with -O2 for mingw compiler #1896

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This commit is contained in:
Andrey Kamaev 2012-05-14 14:19:28 +00:00
parent 78915e016c
commit 07658aeb74
1 changed files with 13 additions and 2 deletions
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15
cmake/OpenCVCompilerOptions.cmake
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@ -1,5 +1,16 @@
if (WIN32 AND CMAKE_GENERATOR MATCHES "(MinGW)|(MSYS)")
set(CMAKE_CXX_FLAGS_RELEASE "-O2 -DNDEBUG" CACHE STRING "")
if (WIN32)
# mingw compiler is known to produce unstable SSE code with -O3 hence we are trying to use -O2 instead
if(CMAKE_COMPILER_IS_GNUCXX)
foreach(flags CMAKE_CXX_FLAGS CMAKE_CXX_FLAGS_RELEASE CMAKE_CXX_FLAGS_DEBUG)
string(REPLACE "-O3" "-O2" ${flags} "${${flags}}")
endforeach()
endforeach()
if(CMAKE_COMPILER_IS_GNUC)
foreach(flags CMAKE_C_FLAGS CMAKE_C_FLAGS_RELEASE CMAKE_C_FLAGS_DEBUG)
string(REPLACE "-O3" "-O2" ${flags} "${${flags}}")
endforeach()
endforeach()
endif()
if(MSVC)