[libcxx] r299711 - [CMake][libcxx] Use check_c_compiler_flag to check for nodefaultlibs
Petr Hosek via cfe-commits
cfe-commits at lists.llvm.org
Thu Apr 6 14:06:33 PDT 2017
Author: phosek
Date: Thu Apr 6 16:06:33 2017
New Revision: 299711
URL: http://llvm.org/viewvc/llvm-project?rev=299711&view=rev
Log:
[CMake][libcxx] Use check_c_compiler_flag to check for nodefaultlibs
We're using -nodefaultlibs to avoid the dependency on C++ library
when using check_cxx_compiler_flag, and as such we cannot use
check_cxx_compiler_flag to check the availability of -nodefaultlibs
itself.
Modified:
libcxx/trunk/cmake/config-ix.cmake
Modified: libcxx/trunk/cmake/config-ix.cmake
URL: http://llvm.org/viewvc/llvm-project/libcxx/trunk/cmake/config-ix.cmake?rev=299711&r1=299710&r2=299711&view=diff
==============================================================================
--- libcxx/trunk/cmake/config-ix.cmake (original)
+++ libcxx/trunk/cmake/config-ix.cmake Thu Apr 6 16:06:33 2017
@@ -1,4 +1,5 @@
include(CheckLibraryExists)
+include(CheckCCompilerFlag)
include(CheckCXXCompilerFlag)
if(WIN32 AND NOT MINGW)
@@ -24,7 +25,7 @@ endif()
# required during compilation (which has the -nodefaultlibs). libc is
# required for the link to go through. We remove sanitizers from the
# configuration checks to avoid spurious link errors.
-check_cxx_compiler_flag(-nodefaultlibs LIBCXX_SUPPORTS_NODEFAULTLIBS_FLAG)
+check_c_compiler_flag(-nodefaultlibs LIBCXX_SUPPORTS_NODEFAULTLIBS_FLAG)
if (LIBCXX_SUPPORTS_NODEFAULTLIBS_FLAG)
set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -nodefaultlibs")
if (LIBCXX_HAS_C_LIB)
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