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@@ -1,26 +1,5 @@
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include(CheckLibraryExists)
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include(CheckLibraryExists)
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include(CheckCXXCompilerFlag)
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include(CheckCXXCompilerFlag)
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-
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-check_library_exists(c fopen "" LIBCXX_HAS_C_LIB)
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-check_library_exists(gcc_s __gcc_personality_v0 "" LIBCXX_HAS_GCC_S_LIB)
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-
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-# libc++ is built with -nodefaultlibs, so we want all our checks to also
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-# use this option, otherwise we may end up with an inconsistency between
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-# the flags we think we require during configuration (if the checks are
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-# performed without -nodefaultlibs) and the flags that are actually
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-# required during compilation (which has the -nodefaultlibs). libc is
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-# required for the link to go through.
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-check_cxx_compiler_flag(-nodefaultlibs LIBCXX_SUPPORTS_NODEFAULTLIBS_FLAG)
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-if (LIBCXX_SUPPORTS_NODEFAULTLIBS_FLAG)
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- list(APPEND CMAKE_REQUIRED_LIBRARIES -nodefaultlibs)
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- if (LIBCXX_HAS_C_LIB)
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- list(APPEND CMAKE_REQUIRED_LIBRARIES c)
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- endif ()
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- if (LIBCXX_HAS_GCC_S_LIB)
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- list(APPEND CMAKE_REQUIRED_LIBRARIES gcc_s)
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- endif ()
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-endif ()
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-
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include(CheckLibcxxAtomic)
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include(CheckLibcxxAtomic)
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# Check compiler flags
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# Check compiler flags
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@@ -35,5 +14,7 @@ check_cxx_compiler_flag(/GR- LIBCXX_HAS_NO_GR_FLAG)
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# Check libraries
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# Check libraries
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check_library_exists(pthread pthread_create "" LIBCXX_HAS_PTHREAD_LIB)
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check_library_exists(pthread pthread_create "" LIBCXX_HAS_PTHREAD_LIB)
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+check_library_exists(c fopen "" LIBCXX_HAS_C_LIB)
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check_library_exists(m ccos "" LIBCXX_HAS_M_LIB)
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check_library_exists(m ccos "" LIBCXX_HAS_M_LIB)
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check_library_exists(rt clock_gettime "" LIBCXX_HAS_RT_LIB)
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check_library_exists(rt clock_gettime "" LIBCXX_HAS_RT_LIB)
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+check_library_exists(gcc_s __gcc_personality_v0 "" LIBCXX_HAS_GCC_S_LIB)
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