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Add option to force usage of inline namespaces

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Detection of inline namespaces is imperfect as some compilers
don't provide __has_feature

This option allows to override it if needed.
This commit is contained in:
darklukee 2020-10-21 09:45:41 +02:00 committed by Victor Zverovich
parent e57ec7d563
commit 280b5612c0
1 changed files with 9 additions and 1 deletions
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10
include/fmt/core.h
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@ -178,9 +178,17 @@
# endif
#endif
#ifndef FMT_BEGIN_NAMESPACE
#ifndef FMT_USE_INLINE_NAMESPACES
# if FMT_HAS_FEATURE(cxx_inline_namespaces) || FMT_GCC_VERSION >= 404 || \
(FMT_MSC_VER >= 1900 && !_MANAGED)
# define FMT_USE_INLINE_NAMESPACES 1
# else
# define FMT_USE_INLINE_NAMESPACES 0
# endif
#endif
#ifndef FMT_BEGIN_NAMESPACE
# if FMT_USE_INLINE_NAMESPACES
# define FMT_INLINE_NAMESPACE inline namespace
# define FMT_END_NAMESPACE \
} \