#
# Compiler checker for stack smashing flags by Parra Studios
# Tests if a defined stack smashing security flag is available.
#
# Copyright (C) 2016 - 2026 Vicente Eduardo Ferrer Garcia <vic798@gmail.com>
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
include(CheckCSourceCompiles)
# Define current stack smashing program path
get_filename_component(stack_smashing_program_path ${CMAKE_CURRENT_LIST_FILE} PATH)
# Read source file
file(READ ${stack_smashing_program_path}/CheckCCompilerFlagStackSmashing.c stack_smashing_program)
macro(check_c_compiler_flag_stack_smashing _flag _result)
# Store current definitions
set(required_definitions "${CMAKE_REQUIRED_DEFINITIONS}")
# Use the defined flag
set(CMAKE_REQUIRED_DEFINITIONS "${_flag}")
# Compile stack smashing program
check_c_source_compiles("${stack_smashing_program}" ${_result})
# Restore previous required definitions
set(CMAKE_REQUIRED_DEFINITIONS ${required_definitions})
endmacro()