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| author | Matthias Kretz <kretz@kde.org> | 2007-01-23 11:05:14 +0000 |
|---|---|---|
| committer | Matthias Kretz <kretz@kde.org> | 2007-01-23 11:05:14 +0000 |
| commit | e1efbf5c80ca2407c6e94ab1f6263f9cadbed86e (patch) | |
| tree | 434d3094f2d3afda5b899f86a99830a70ee82c99 | |
| parent | c26c332ac1b79311e0afc242d405dbb444520672 (diff) | |
| download | extra-cmake-modules-e1efbf5c80ca2407c6e94ab1f6263f9cadbed86e.tar.gz extra-cmake-modules-e1efbf5c80ca2407c6e94ab1f6263f9cadbed86e.tar.bz2 | |
add -fno-threadsafe-statics to the CXXFLAGS if supported: as we can't rely on
threadsafe local statics anyway, we can save the cycles in gcc4 compiled
programs (gcc4 adds a mutex around every local static).
svn path=/trunk/KDE/kdelibs/; revision=626443
| -rw-r--r-- | modules/FindKDE4Internal.cmake | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/modules/FindKDE4Internal.cmake b/modules/FindKDE4Internal.cmake index a1ad01b9..84f4f1b9 100644 --- a/modules/FindKDE4Internal.cmake +++ b/modules/FindKDE4Internal.cmake @@ -713,6 +713,12 @@ if (CMAKE_COMPILER_IS_GNUCXX) MESSAGE(STATUS "Your compiler doesn't support PIE flag") endif(HAVE_FPIE_SUPPORT) endif(KDE4_ENABLE_FPIE) + # save a little by making local statics not threadsafe + check_cxx_compiler_flag(-fno-threadsafe-statics __KDE_HAVE_NO_THREADSAFE_STATICS) + if (__KDE_HAVE_NO_THREADSAFE_STATICS) + set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-threadsafe-statics") + endif (__KDE_HAVE_NO_THREADSAFE_STATICS) + # visibility support check_cxx_compiler_flag(-fvisibility=hidden __KDE_HAVE_GCC_VISIBILITY) |