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| author | Yaakov Selkowitz <yselkowi@redhat.com> | 2016-03-23 16:14:00 -0500 |
|---|---|---|
| committer | Yaakov Selkowitz <yselkowi@redhat.com> | 2016-03-23 16:14:00 -0500 |
| commit | b9bbe1bccb1254ce891fc92961be2ec3cd3f6e4a (patch) | |
| tree | c9c5ff440d664be40b15e57416805320aa3dd22a /newlib/libc/include/sys/features.h | |
| parent | b59866f806b1afd2f006012850b13cebbcafafd4 (diff) | |
| download | cygnal-b9bbe1bccb1254ce891fc92961be2ec3cd3f6e4a.tar.gz cygnal-b9bbe1bccb1254ce891fc92961be2ec3cd3f6e4a.tar.bz2 cygnal-b9bbe1bccb1254ce891fc92961be2ec3cd3f6e4a.zip | |
Feature test macros overhaul: C++ TR1
While C++11 was the first version of the standard to use C99 functionality,
TR1 (for C++03) also does, and G++ does not distinguish between C++98 and
C++03, or when TR1 is in use. Therefore, while not strictly correct for
"pure" C++98, enabling C99 for all C++ usage is the simplest solution (and
much better than always using -D_GNU_SOURCE as on Linux).
See thread starting: https://sourceware.org/ml/newlib/2016/msg00297.html
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
Diffstat (limited to 'newlib/libc/include/sys/features.h')
| -rw-r--r-- | newlib/libc/include/sys/features.h | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/newlib/libc/include/sys/features.h b/newlib/libc/include/sys/features.h index 1625495f4..86297de43 100644 --- a/newlib/libc/include/sys/features.h +++ b/newlib/libc/include/sys/features.h @@ -81,7 +81,7 @@ extern "C" { * _XOPEN_SOURCE >= 700 * SUSv4 (POSIX.1-2008 plus XSI) * - * _ISOC99_SOURCE or gcc -std=c99 or g++ -std=c++11 + * _ISOC99_SOURCE or gcc -std=c99 or g++ * ISO C99 * * _ISOC11_SOURCE or gcc -std=c11 or g++ -std=c++11 @@ -204,8 +204,8 @@ extern "C" { * * __ISO_C_VISIBLE >= 1999 * ISO C99; enabled with gcc -std=c99 or newer (on by default since GCC 5), - * g++ -std=c++11 or newer (on by default since GCC 6), or with - * _ISOC99_SOURCE, _POSIX_C_SOURCE >= 200112L, or _XOPEN_SOURCE >= 600. + * any version of C++, or with _ISOC99_SOURCE, _POSIX_C_SOURCE >= 200112L, + * or _XOPEN_SOURCE >= 600. * * __ISO_C_VISIBLE >= 2011 * ISO C11; enabled with gcc -std=c11 or newer (on by default since GCC 5), @@ -259,8 +259,8 @@ extern "C" { #if defined(_ISOC11_SOURCE) || \ (__STDC_VERSION__ - 0) >= 201112L || (__cplusplus - 0) >= 201103L #define __ISO_C_VISIBLE 2011 -#elif defined(_ISOC99_SOURCE) || \ - (__STDC_VERSION__ - 0) >= 199901L || (_POSIX_C_SOURCE - 0) >= 200112L +#elif defined(_ISOC99_SOURCE) || (_POSIX_C_SOURCE - 0) >= 200112L || \ + (__STDC_VERSION__ - 0) >= 199901L || defined(__cplusplus) #define __ISO_C_VISIBLE 1999 #else #define __ISO_C_VISIBLE 1990 |