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-rw-r--r--features.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/features.h b/features.h
index 47a4124502..83977e9c95 100644
--- a/features.h
+++ b/features.h
@@ -29,6 +29,8 @@ Cambridge, MA 02139, USA. */
_BSD_SOURCE ANSI, POSIX, and 4.3BSD things.
_SVID_SOURCE ANSI, POSIX, and SVID things.
_GNU_SOURCE All of the above, plus GNU extensions.
+ _REENTRANT Select additionally reentrant object.
+ _THREAD_SAFE Same as _REENTRANT, often used by other systems.
The `-ansi' switch to the GNU C compiler defines __STRICT_ANSI__.
If none of these are defined, the default is all but _GNU_SOURCE.
@@ -137,7 +139,7 @@ Cambridge, MA 02139, USA. */
#define __USE_GNU 1
#endif
-#if defined (__USE_GNU) || defined (__USE_MISC)
+#if defined (_REENTRANT) || defined (_THREAD_SAFE)
#define __USE_REENTRANT 1
#endif