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Support different C/C++ compiler.

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For example gcc as the C compiler and clang for C++.
This commit is contained in:
Felix Geyer 2012-04-21 19:47:39 +02:00
parent 19a5aad90a
commit 96146d9e80
1 changed files with 43 additions and 23 deletions
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66
CMakeLists.txt
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@ -25,37 +25,57 @@ option(WITH_LTO "Enable Link Time Optimization (LTO)" OFF)
set( KEEPASSX_VERSION "0.9.0" )
if("${CMAKE_CXX_COMPILER}" MATCHES "clang(\\+\\+)?$" OR "${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")
if("${CMAKE_C_COMPILER}" MATCHES "clang$" OR "${CMAKE_C_COMPILER_ID}" STREQUAL "Clang")
set(CMAKE_COMPILER_IS_CLANG 1)
endif("${CMAKE_C_COMPILER}" MATCHES "clang$" OR "${CMAKE_C_COMPILER_ID}" STREQUAL "Clang")
if("${CMAKE_CXX_COMPILER}" MATCHES "clang(\\+\\+)?$" OR "${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")
set(CMAKE_COMPILER_IS_CLANGXX 1)
endif("${CMAKE_CXX_COMPILER}" MATCHES "clang(\\+\\+)?$" OR "${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")
macro(add_compiler_flags FLAGS)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${FLAGS}")
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${FLAGS}")
endmacro(add_compiler_flags)
macro(add_gcc_compiler_cxxflags FLAGS)
if(CMAKE_COMPILER_IS_GNUCXX OR CMAKE_COMPILER_IS_CLANGXX)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${FLAGS}")
endif(CMAKE_COMPILER_IS_GNUCXX OR CMAKE_COMPILER_IS_CLANGXX)
endmacro(add_gcc_compiler_cxxflags)
macro(add_gcc_compiler_cflags FLAGS)
if(CMAKE_COMPILER_IS_GNUCC OR CMAKE_COMPILER_IS_CLANG)
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${FLAGS}")
endif(CMAKE_COMPILER_IS_GNUCC OR CMAKE_COMPILER_IS_CLANG)
endmacro(add_gcc_compiler_cflags)
macro(add_gcc_compiler_flags FLAGS)
add_gcc_compiler_cxxflags("${FLAGS}")
add_gcc_compiler_cflags("${FLAGS}")
endmacro(add_gcc_compiler_flags)
add_definitions(-DQT_NO_KEYWORDS -DQT_NO_EXCEPTIONS -DQT_NO_STL -DQT_STRICT_ITERATORS)
if(CMAKE_COMPILER_IS_GNUCXX OR CMAKE_COMPILER_IS_CLANG)
add_compiler_flags("-ansi -fno-common -fstack-protector -D_FORTIFY_SOURCE=2")
add_compiler_flags("-Wall -Wextra -Wundef -Wpointer-arith -Wno-long-long")
add_compiler_flags("-Wformat=2 -Werror=format-security -Wmissing-format-attribute")
add_gcc_compiler_flags("-ansi -fno-common -fstack-protector -D_FORTIFY_SOURCE=2")
add_gcc_compiler_flags("-Wall -Wextra -Wundef -Wpointer-arith -Wno-long-long")
add_gcc_compiler_flags("-Wformat=2 -Werror=format-security -Wmissing-format-attribute")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-exceptions -fno-rtti")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wnon-virtual-dtor -Wold-style-cast -Woverloaded-virtual")
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wchar-subscripts -Wwrite-strings -Werror=implicit-function-declaration")
add_gcc_compiler_cxxflags("-fno-exceptions -fno-rtti")
add_gcc_compiler_cxxflags("-Wnon-virtual-dtor -Wold-style-cast -Woverloaded-virtual")
add_gcc_compiler_cflags("-Wchar-subscripts -Wwrite-strings -Werror=implicit-function-declaration")
if(CMAKE_COMPILER_IS_GNUCXX)
add_compiler_flags("-Wcast-align --param=ssp-buffer-size=4")
else()
add_compiler_flags("-mllvm -stack-protector-buffer-size=4")
endif(CMAKE_COMPILER_IS_GNUCXX)
if(CMAKE_COMPILER_IS_CLANGXX)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mllvm -stack-protector-buffer-size=4")
elseif(CMAKE_COMPILER_IS_GNUCXX)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wcast-align --param=ssp-buffer-size=4")
endif(CMAKE_COMPILER_IS_CLANGXX)
if( CMAKE_SYSTEM_NAME STREQUAL "Linux" )
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,--no-add-needed -Wl,--as-needed -Wl,--no-undefined")
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,-z,relro")
endif( CMAKE_SYSTEM_NAME STREQUAL "Linux" )
endif(CMAKE_COMPILER_IS_GNUCXX OR CMAKE_COMPILER_IS_CLANG)
if(CMAKE_COMPILER_IS_CLANG)
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -mllvm -stack-protector-buffer-size=4")
elseif(CMAKE_COMPILER_IS_GNUCC)
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wcast-align --param=ssp-buffer-size=4")
endif(CMAKE_COMPILER_IS_CLANG)
if(CMAKE_SYSTEM_NAME STREQUAL "Linux")
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,--no-add-needed -Wl,--as-needed -Wl,--no-undefined")
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,-z,relro")
endif(CMAKE_SYSTEM_NAME STREQUAL "Linux")
if(WITH_LTO)
include(CheckCXXCompilerFlag)
@ -64,7 +84,7 @@ if(WITH_LTO)
check_cxx_compiler_flag("-flto -fuse-linker-plugin" LTO_AVAILABLE)
if(LTO_AVAILABLE)
add_compiler_flags("-flto -fuse-linker-plugin")
add_gcc_compiler_flags("-flto -fuse-linker-plugin")
else()
message(FATAL_ERROR "This version of gcc doesn't support LTO")
endif(LTO_AVAILABLE)