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[bpt/emacs.git] / src / s / isc4-0.h

diff --git a/src/s/isc4-0.h b/src/s/isc4-0.h
dissimilarity index 91%
index 7b83d0d..ccd6cb0 100644 (file)
--- a/src/s/isc4-0.h
+++ b/src/s/isc4-0.h
@@ -1,9 +1,30 @@
-/* This is needed for ISC 4.0, but won't be needed for 4.1.  */
-
-#include "isc3-0.h"
-
-/* This works around a bug in ISC 4.0; it fails
-   to clear the "POSIX process" flag on an exec.  */
-#define EXTRA_INITIALIZE __setostype (0)
-
-#define LIBS_SYSTEM -linet
+#include "isc3-0.h"
+
+#undef LIBS_SYSTEM
+#define LIBS_SYSTEM -linet -lcposix
+
+#define ISC4_0
+
+/* fmcphers@csugrad.cs.vt.edu reported this was necessary.
+   He used GCC.  I don't know what is needed with other compilers.  */
+#ifdef __GNUC__
+#undef LIBX11_SYSTEM
+#define LIBX11_SYSTEM -lpt -lnls -lnsl_s -lcposix -lc
+#endif
+
+/* Tobias Herbert <herbert@clipper.ikp.physik.th-darmstadt.de>
+   says this is needed.  */
+
+#ifndef POSIX_SIGNALS
+#ifndef sigblock
+#ifndef SIG_BLOCK
+#define SIG_BLOCK 0
+#endif
+#define sigblock(sig)                                  \
+     (sigprocmask_set = SIGEMPTYMASK | (sig),          \
+      sigprocmask (SIG_BLOCK, &sigprocmask_set, NULL))
+#define sigunblock(sig)                                                \
+     (sigprocmask_set = SIGFULLMASK & ~(sig),                  \
+      sigprocmask (SIG_SETMASK, &sigprocmask_set, NULL))
+#endif
+#endif /* not POSIX_SIGNALS */