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