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* cmake : detect support of c++11 via compiler flags

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This commit is contained in:
hagen 2014-09-22 22:36:06 +00:00
parent 4fc3b8026a
commit 1661ebb537
1 changed files with 14 additions and 2 deletions
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16
build/CMakeLists.txt
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@ -58,8 +58,20 @@ endif ()
# compiler flags customization (by vendor) # compiler flags customization (by vendor)
add_definitions ( "-Wall -Wextra" ) add_definitions ( "-Wall -Wextra" )
if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
# check for c++11 support
include(CheckCXXCompilerFlag)
CHECK_CXX_COMPILER_FLAG("-std=c++11" CXX11_SUPPORTED)
CHECK_CXX_COMPILER_FLAG("-std=c++0x" CXX0X_SUPPORTED)
if (CXX11_SUPPORTED)
add_definitions( "-std=c++11" ) add_definitions( "-std=c++11" )
elseif (CXX0X_SUPPORTED) # gcc 4.6
add_definitions( "-std=c++0x" )
else ()
message(SEND_ERROR "C++11 standart not seems to be supported by compiler. Too old version?")
endif ()
if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
if (WITH_HARDENING) if (WITH_HARDENING)
add_definitions( "-D_FORTIFY_SOURCE=2" ) add_definitions( "-D_FORTIFY_SOURCE=2" )
set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wformat -Wformat-security -Werror=format-security" ) set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wformat -Wformat-security -Werror=format-security" )
@ -67,7 +79,7 @@ if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fPIE -pie" ) set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fPIE -pie" )
endif () endif ()
elseif (CMAKE_CXX_COMPILER_ID STREQUAL "Clang") elseif (CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
add_definitions( "-std=c++11" ) # more tweaks
endif () endif ()
# compiler flags customization (by system) # compiler flags customization (by system)