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cmake: Update compiler flags.

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This commit is contained in:
Andreas Schneider 2013-03-14 10:10:41 +01:00
parent 2ef1c72726
commit 480c97c487
2 changed files with 28 additions and 15 deletions
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20
cmake/Modules/MacroCheckCCompilerFlagSSP.cmake → cmake/Modules/CheckCCompilerFlagSSP.cmake
View file

@ -1,11 +1,12 @@
# - Check whether the C compiler supports a given flag in the
# context of a stack checking compiler option.
# CHECK_C_COMPILER_FLAG_SSP(FLAG VARIABLE)
#
# FLAG - the compiler flag
# VARIABLE - variable to store the result
#
# This actually calls the check_c_source_compiles macro.
#
# This actually calls check_c_source_compiles.
# See help for CheckCSourceCompiles for a listing of variables
# that can modify the build.
@ -15,12 +16,11 @@
# For details see the accompanying COPYING-CMAKE-SCRIPTS file.
INCLUDE(CheckCSourceCompiles)
MACRO (CHECK_C_COMPILER_FLAG_SSP _FLAG _RESULT)
SET(SAFE_CMAKE_REQUIRED_DEFINITIONS "${CMAKE_REQUIRED_DEFINITIONS}")
SET(CMAKE_REQUIRED_DEFINITIONS "${_FLAG}")
CHECK_C_SOURCE_COMPILES("int main(int argc, char **argv) { char buffer[256]; return buffer[argc]=0;}" ${_RESULT})
SET (CMAKE_REQUIRED_DEFINITIONS "${SAFE_CMAKE_REQUIRED_DEFINITIONS}")
ENDMACRO (CHECK_C_COMPILER_FLAG_SSP)
include(CheckCSourceCompiles)
function(CHECK_C_COMPILER_FLAG_SSP _FLAG _RESULT)
set(SAFE_CMAKE_REQUIRED_DEFINITIONS "${CMAKE_REQUIRED_DEFINITIONS}")
set(CMAKE_REQUIRED_DEFINITIONS "${_FLAG}")
check_c_source_compiles("int main(int argc, char **argv) { char buffer[256]; return buffer[argc]=0;}" ${_RESULT})
set(CMAKE_REQUIRED_DEFINITIONS "${SAFE_CMAKE_REQUIRED_DEFINITIONS}")
endfunction(CHECK_C_COMPILER_FLAG_SSP)

23
cmake/Modules/DefineCompilerFlags.cmake
View file

@ -1,7 +1,7 @@
# define system dependent compiler flags
include(CheckCCompilerFlag)
include(MacroCheckCCompilerFlagSSP)
include(CheckCCompilerFlagSSP)
if (UNIX AND NOT WIN32)
#
@ -26,10 +26,15 @@ if (UNIX AND NOT WIN32)
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fstack-protector")
endif (WITH_STACK_PROTECTOR)
check_c_compiler_flag("-D_FORTIFY_SOURCE=2" WITH_FORTIFY_SOURCE)
if (WITH_FORTIFY_SOURCE)
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -D_FORTIFY_SOURCE=2")
endif (WITH_FORTIFY_SOURCE)
if (CMAKE_BUILD_TYPE)
string(TOLOWER "${CMAKE_BUILD_TYPE}" CMAKE_BUILD_TYPE_LOWER)
if (NOT CMAKE_BUILD_TYPE_LOWER MATCHES debug)
check_c_compiler_flag("-D_FORTIFY_SOURCE=2" WITH_FORTIFY_SOURCE)
if (WITH_FORTIFY_SOURCE)
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -D_FORTIFY_SOURCE=2")
endif (WITH_FORTIFY_SOURCE)
endif()
endif()
endif (${CMAKE_C_COMPILER_ID} MATCHES "(GNU|Clang)")
#
@ -62,3 +67,11 @@ if (UNIX AND NOT WIN32)
endif (_lfs_CFLAGS)
endif (UNIX AND NOT WIN32)
if (MSVC)
# Use secure functions by defaualt and suppress warnings about
#"deprecated" functions
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /D _CRT_SECURE_CPP_OVERLOAD_STANDARD_NAMES=1")
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /D _CRT_SECURE_CPP_OVERLOAD_STANDARD_NAMES_COUNT=1")
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /D _CRT_NONSTDC_NO_WARNINGS=1 /D _CRT_SECURE_NO_WARNINGS=1")
endif (MSVC)