Author: ericwf
Date: Sun Aug 14 17:51:54 2016
New Revision: 278638
URL: http://llvm.org/viewvc/llvm-project?rev=278638&view=rev
Log:
Add private option to change build dialect from C++11
Although libc++ only requires C++11 to build, there are other
reasons to turn on a newer dialect in the build. For example
IDE's may not highlight any C++14/C++17 in the headers when
configured for C++11. This patch add's a private option for
changing this.
Modified:
libcxx/trunk/CMakeLists.txt
Modified: libcxx/trunk/CMakeLists.txt
URL:
http://llvm.org/viewvc/llvm-project/libcxx/trunk/CMakeLists.txt?rev=278638&r1=278637&r2=278638&view=diff
==============================================================================
--- libcxx/trunk/CMakeLists.txt (original)
+++ libcxx/trunk/CMakeLists.txt Sun Aug 14 17:51:54 2016
@@ -301,9 +301,11 @@ remove_flags(-DNDEBUG -UNDEBUG -D_DEBUG
remove_flags(-Wno-pedantic -pedantic-errors -pedantic)
# Required flags ==============================================================
-add_compile_flags_if_supported(-std=c++11)
-if (NOT MSVC AND NOT LIBCXX_SUPPORTS_STD_EQ_CXX11_FLAG)
- message(FATAL_ERROR "C++11 is required but the compiler does not support
-std=c++11")
+set(LIBCXX_STANDARD_VER c++11 CACHE INTERNAL "internal option to change build
dialect")
+add_compile_flags_if_supported(-std=${LIBCXX_STANDARD_VER})
+mangle_name("LIBCXX_SUPPORTS_STD_EQ_${LIBCXX_STANDARD_VER}_FLAG"
SUPPORTS_DIALECT_NAME)
+if (NOT MSVC AND NOT ${SUPPORTS_DIALECT_NAME})
+ message(FATAL_ERROR "C++11 or greater is required but the compiler does not
support ${LIBCXX_STANDARD_VER}")
endif()
# On all systems the system c++ standard library headers need to be excluded.
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