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+?RCS: $Id: d_setpgrp.U 167 2013-05-08 17:58:00Z rmanfredi $
+?RCS:
+?RCS: Copyright (c) 1991-1997, 2004-2006, Raphael Manfredi
+?RCS:
+?RCS: You may redistribute only under the terms of the Artistic License,
+?RCS: as specified in the README file that comes with the distribution.
+?RCS: You may reuse parts of this distribution only within the terms of
+?RCS: that same Artistic License; a copy of which may be found at the root
+?RCS: of the source tree for dist 4.0.
+?RCS:
+?RCS: $Log: d_setpgrp.U,v $
+?RCS: Revision 3.0.1.3 1997/02/28 15:44:16 ram
+?RCS: patch61: obsoleted USE_BSDGRP in favor of USE_BSD_SETPGRP
+?RCS: patch61: another unit now also defines a USE_BSD_GETPGRP
+?RCS: patch61: fallback for test program failure improved
+?RCS:
+?RCS: Revision 3.0.1.2 1995/07/25 13:59:30 ram
+?RCS: patch56: re-arranged compile line to include ldflags before objects
+?RCS:
+?RCS: Revision 3.0.1.1 1994/10/29 16:15:37 ram
+?RCS: patch36: added 'ldflags' to the test compile line (ADO)
+?RCS: patch36: call ./usg explicitly instead of relying on PATH
+?RCS:
+?RCS: Revision 3.0 1993/08/18 12:07:09 ram
+?RCS: Baseline for dist 3.0 netwide release.
+?RCS:
+?MAKE:d_setpgrp d_bsdsetpgrp: Trylink Setvar cat i_unistd
+?MAKE: -pick add $@ %<
+?S:d_setpgrp:
+?S: This variable conditionally defines HAS_SETPGRP if setpgrp() is
+?S: available to set the current process group.
+?S:.
+?S:d_bsdsetpgrp (d_bsdpgrp):
+?S: This variable conditionally defines USE_BSD_SETPGRP if
+?S: setpgrp needs two arguments whereas USG one needs none.
+?S: See also d_setpgid for a POSIX interface.
+?S:.
+?C:HAS_SETPGRP (SETPGRP):
+?C: This symbol, if defined, indicates that the setpgrp routine is
+?C: available to set the current process group.
+?C:.
+?C:USE_BSD_SETPGRP (USE_BSDPGRP BSDPGRP):
+?C: This symbol, if defined, indicates that setpgrp needs two
+?C: arguments whereas USG one needs none. See also HAS_SETPGID
+?C: for a POSIX interface.
+?C:.
+?H:#$d_setpgrp HAS_SETPGRP /**/
+?H:#$d_bsdsetpgrp USE_BSD_SETPGRP /**/
+?H:.
+?LINT:set d_setpgrp d_bsdsetpgrp
+: see if setpgrp exists
+$cat >try.c <<EOC
+#include <sys/types.h>
+#$i_unistd I_UNISTD
+#ifdef I_UNISTD
+#include <unistd.h>
+#endif
+int main(void)
+{
+ static pid_t ret, pid, pgrp;
+ ret |= setpgrp(pid, pgrp);
+ return ret ? 0 : 1;
+}
+EOC
+cyn="whether you have the BSD flavour of setpgrp()"
+set d_bsdsetpgrp
+eval $trylink
+
+case "$d_bsdsetpgrp" in
+$define)
+ val="$define"
+ set d_setpgrp
+ eval $setvar
+ ;;
+*)
+ $cat >try.c <<EOC
+#include <sys/types.h>
+#$i_unistd I_UNISTD
+#ifdef I_UNISTD
+#include <unistd.h>
+#endif
+int main(void)
+{
+ static pid_t ret;
+ ret |= setpgrp();
+ if (ret)
+ return 1;
+ return 0;
+}
+EOC
+ cyn="whether you have the USG flavour of setpgrp() then"
+ set d_setpgrp
+ eval $trylink
+ ;;
+esac
+