[POSIX_SIGNALS] (sigsetmask): Don't define if already defined.

diff --git a/src/syssignal.h b/src/syssignal.h
index 0bac2acebc72281776a74e020a89b6bc79ddc754..7cf7261cc06c27a53a21036e7afbb5068172b269 100644 (file)
--- a/src/syssignal.h
+++ b/src/syssignal.h
@@ -52,7 +52,9 @@ extern sigset_t sys_sigmask ();
 #define sigpause(SIG)    sys_sigpause (SIG)
 #define sigblock(SIG)    sys_sigblock (SIG)
 #define sigunblock(SIG)  sys_sigunblock (SIG)
+#ifndef sigsetmask
 #define sigsetmask(SIG)  sys_sigsetmask (SIG)
+#endif
 #define sighold(SIG)     ONLY_USED_IN_BSD_4_1
 #define sigrelse(SIG)    ONLY_USED_IN_BSD_4_1
 #undef signal