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# Copyright (c) 2017 Facebook, Inc.
# Licensed under the Apache License, Version 2.0 (the "License")
if (CMAKE_C_COMPILER_ID MATCHES "Clang")
set(COMPILER_NOPIE_FLAG "-nopie")
else()
set(_backup_c_flags "${CMAKE_REQUIRED_FLAGS}")
set(CMAKE_REQUIRED_FLAGS "-no-pie")
CHECK_CXX_SOURCE_COMPILES("int main() {return 0;}"
HAVE_NO_PIE_FLAG)
if (HAVE_NO_PIE_FLAG)
set(COMPILER_NOPIE_FLAG "-no-pie")
else()
set(COMPILER_NOPIE_FLAG "")
endif()
set(CMAKE_REQUIRED_FLAGS "${_backup_c_flags}")
endif()
# check whether reallocarray availability
# this is used to satisfy reallocarray usage under src/cc/libbpf/
CHECK_CXX_SOURCE_COMPILES(
"
#define _GNU_SOURCE
#include <stdlib.h>
int main(void)
{
return !!reallocarray(NULL, 1, 1);
}
" HAVE_REALLOCARRAY_SUPPORT)
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