qt5base-lts/config.tests/common/c++11/c++11.cpp
Thiago Macieira ff6754fb8c Allow Clang to compile without libc++
Clang is perfectly able to deal with the libstdc++ headers. The
problem on Mac is that those headers are mightily old (from GCC 4.2),
so they are insufficient for C++11 support.

So make a more accurate test. This allows Clang to enable C++11 in the
presence of newer libstdc++ header (e.g., Clang on Linux or Clang on
FreeBSD).

Change-Id: I4f457ca82bf13feca0af78c9363cb6365bb3f68e
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
2013-09-09 23:04:48 +02:00

58 lines
2.4 KiB
C++

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#if __cplusplus >= 201103L || defined(__GXX_EXPERIMENTAL_CXX0X__)
// Compiler claims to support C++11, trust it
#else
# error "__cplusplus must be >= 201103L, or __GXX_EXPERIMENTAL_CXX0X__ must be defined"
#endif
#include <utility>
#if defined(__clang__)
# if __has_feature(cxx_generalized_initializers)
// On Mac OS X, the libstdc++ headers don't include <initializer_list>
// This #include here forces a failure unless we're using libc++
# include <initializer_list>
# endif
#endif
int main(int, char **) { return 0; }