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Don't use rvalue references when compiling with clang and an old libstdc++ as the latter doesn't provide std::move.

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This commit is contained in:
Victor Zverovich 2014-04-24 14:18:37 -07:00
parent 9882a7cf33
commit b61bb5d635
1 changed files with 9 additions and 0 deletions
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9
format.h
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@ -52,6 +52,10 @@
# define FMT_GCC_EXTENSION
#endif
#if defined(__GNUC_LIBSTD__) && defined (__GNUC_LIBSTD_MINOR__)
# define FMT_GNUC_LIBSTD_VERSION (__GNUC_LIBSTD__ * 100 + __GNUC_LIBSTD_MINOR__)
#endif
// Compatibility with compilers other than clang.
#ifdef __has_feature
# define FMT_HAS_FEATURE(x) __has_feature(x)
@ -74,6 +78,11 @@
# define FMT_USE_RVALUE_REFERENCES \
(FMT_HAS_FEATURE(cxx_rvalue_references) || \
(FMT_GCC_VERSION >= 403 && __cplusplus >= 201103) || _MSC_VER >= 1600)
// Don't use rvalue references when compiling with clang and an old libstdc++
// as the latter doesn't provide std::move.
# ifdef FMT_GNUC_LIBSTD_VERSION <= 402
# define FMT_USE_RVALUE_REFERENCES 0
# endif
#endif
#if FMT_USE_RVALUE_REFERENCES