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48 lines
1.0 KiB
CMake
48 lines
1.0 KiB
CMake
include (CheckCXXSourceCompiles)
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include (CMakePushCheckState)
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set(THREADS_PREFER_PTHREAD_FLAG ON)
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find_package(Threads)
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cmake_push_check_state ()
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if (CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
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# clang4 : -no-pie cause error
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# clang6 : -no-pie cause warning
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if (MAKE_STATIC_LIBRARIES)
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set (TEST_FLAG "-Wl,-Bstatic -stdlib=libc++ -lc++ -lc++abi -Wl,-Bdynamic")
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else ()
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set (TEST_FLAG "-stdlib=libc++ -lc++ -lc++abi")
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endif ()
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set (CMAKE_REQUIRED_FLAGS "${TEST_FLAG}")
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set (CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES} Threads::Threads)
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check_cxx_source_compiles("
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#include <iostream>
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int main() {
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std::cerr << std::endl;
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return 0;
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}
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" HAVE_LIBCXX)
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else ()
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set (TEST_FLAG "-no-pie")
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set (CMAKE_REQUIRED_FLAGS "${TEST_FLAG}")
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check_cxx_source_compiles("
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int main() {
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return 0;
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}
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" HAVE_NO_PIE)
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if (HAVE_NO_PIE)
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set (FLAG_NO_PIE ${TEST_FLAG})
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endif ()
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endif ()
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cmake_pop_check_state ()
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