MacroCheckCCompilerFlagSSP.cmake

# - 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.
#  See help for CheckCSourceCompiles for a listing of variables
#  that can modify the build.

# Copyright (c) 2006, Alexander Neundorf, <neundorf@kde.org>
#
# Redistribution and use is allowed according to the terms of the BSD license.
# 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)