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[cmake] * new cmake option to contol flags (allow user to break everythings^^): USER_CMAKE_C_FLAGS and USER_CMAKE_CXX_FLAGS 

For example enable more optimization on c++:
    cmake CMakeLists.txt DUSER_CMAKE_CXX_FLAGS="-O3"
Or more warning on c++:
    cmake CMakeLists.txt DUSER_CMAKE_CXX_FLAGS="-Wstrict-aliasing"


git-svn-id: http://pcsx2.googlecode.com/svn/trunk@3417 96395faa-99c1-11dd-bbfe-3dabce05a288
This commit is contained in:
gregory.hainaut 2010-07-07 11:36:54 +00:00
parent 8864c8bbaf
commit a16f8b6bc4
1 changed files with 25 additions and 4 deletions
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29
cmake/BuildParameters.cmake
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@ -5,6 +5,9 @@
# Use all internal lib: -DFORCE_INTERNAL_ALL=TRUE
# Use soundtouch internal lib: -DFORCE_INTERNAL_SOUNDTOUCH=TRUE
# Use zlib internal lib: -DFORCE_INTERNAL_ZLIB=TRUE
### Add some flags to the build process
# control C flags : -DUSER_CMAKE_C_FLAGS="cflags"
# control C++ flags : -DUSER_CMAKE_CXX_FLAGS="cxxflags"
#-------------------------------------------------------------------------------
### Cmake set default value for various compilation variable
@ -22,10 +25,10 @@
#-------------------------------------------------------------------------------
# Do not use default cmake flags
#-------------------------------------------------------------------------------
set(CMAKE_C_FLAGS "")
set(CMAKE_CXX_FLAGS "")
set(CMAKE_C_FLAGS_DEBUG "")
set(CMAKE_CXX_FLAGS_DEBUG "")
set(CMAKE_C_FLAGS_DEVEL "")
set(CMAKE_CXX_FLAGS_DEVEL "")
set(CMAKE_C_FLAGS_RELEASE "")
set(CMAKE_CXX_FLAGS_RELEASE "")
@ -33,14 +36,32 @@ set(CMAKE_CXX_FLAGS_RELEASE "")
# Remove bad default option
#-------------------------------------------------------------------------------
# Remove -rdynamic option that can some segmentation fault when openining pcsx2 plugins
SET(CMAKE_SHARED_LIBRARY_LINK_C_FLAGS " ")
SET(CMAKE_SHARED_LIBRARY_LINK_CXX_FLAGS " ")
set(CMAKE_SHARED_LIBRARY_LINK_C_FLAGS "")
set(CMAKE_SHARED_LIBRARY_LINK_CXX_FLAGS "")
# Remove -fPIC option. No good reason to use it for plugins. Moreover we
# only support x86 architecture. And last but not least it impact the performance.
# Long term future note :), amd64 build will need the -fPIC flags
set(CMAKE_SHARED_LIBRARY_C_FLAGS "")
set(CMAKE_SHARED_LIBRARY_CXX_FLAGS "")
#-------------------------------------------------------------------------------
# Allow user to set some default flags
# By default do not use any flags
#-------------------------------------------------------------------------------
if(DEFINED USER_CMAKE_C_FLAGS)
message(STATUS "Pcsx2 is very sensible with gcc flags, so use USER_CMAKE_C_FLAGS at your own risk !!!")
set(CMAKE_C_FLAGS "${USER_CMAKE_C_FLAGS}")
else(DEFINED USER_CMAKE_C_FLAGS)
set(CMAKE_C_FLAGS "")
endif(DEFINED USER_CMAKE_C_FLAGS)
if(DEFINED USER_CMAKE_CXX_FLAGS)
message(STATUS "Pcsx2 is very sensible with gcc flags, so use USER_CMAKE_CXX_FLAGS at your own risk !!!")
set(CMAKE_CXX_FLAGS "${USER_CMAKE_CXX_FLAGS}")
else(DEFINED USER_CMAKE_CXX_FLAGS)
set(CMAKE_CXX_FLAGS "")
endif(DEFINED USER_CMAKE_CXX_FLAGS)
#-------------------------------------------------------------------------------
# if no build type is set, use Devel as default
# Note without the CMAKE_BUILD_TYPE options the value is still defined to ""