path: root/mcon/U/d_keepsig.U
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authorrmanfredi <rmanfredi@190e5f8e-a817-0410-acf6-e9863daed9af>2006-08-24 12:32:52 +0000
committerrmanfredi <rmanfredi@190e5f8e-a817-0410-acf6-e9863daed9af>2006-08-24 12:32:52 +0000
commit8bfc5756fb68e0b13d7e7c0073ad5b9a4790d1b6 (patch)
treedee05e98bc53766d609ef2a3a07a5672627d812c /mcon/U/d_keepsig.U
Moving project to sourceforge.
git-svn-id: 190e5f8e-a817-0410-acf6-e9863daed9af
Diffstat (limited to 'mcon/U/d_keepsig.U')
1 files changed, 81 insertions, 0 deletions
diff --git a/mcon/U/d_keepsig.U b/mcon/U/d_keepsig.U
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+?RCS: $Id$
+?RCS: Copyright (c) 1991-1997, 2004-2006, Raphael Manfredi
+?RCS: You may redistribute only under the terms of the Artistic Licence,
+?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 Licence; a copy of which may be found at the root
+?RCS: of the source tree for dist 4.0.
+?RCS: $Log: d_keepsig.U,v $
+?RCS: Revision 1995/07/25 13:57:56 ram
+?RCS: patch56: made cc and ccflags optional dependencies
+?RCS: Revision 1995/01/11 15:26:25 ram
+?RCS: patch45: protected "sh -c" within backquotes for Linux and SGI
+?RCS: Revision 1994/10/29 16:13:59 ram
+?RCS: patch36: call ./bsd explicitely instead of relying on PATH
+?RCS: Revision 1993/10/16 13:48:47 ram
+?RCS: patch12: comment for SIGNALS_KEPT was the other way round
+?RCS: Revision 3.0 1993/08/18 12:06:26 ram
+?RCS: Baseline for dist 3.0 netwide release.
+?MAKE:d_keepsig: cat Compile rm Guess contains echo n c Setvar run
+?MAKE: -pick add $@ %<
+?S: This variable contains the eventual value of the SIGNALS_KEPT symbol,
+?S: which indicates to the C program if signal handlers need not reinstated
+?S: after receipt of a signal.
+?C: This symbol is defined if signal handlers needn't be reinstated after
+?C: receipt of a signal.
+?H:#$d_keepsig SIGNALS_KEPT /**/
+?F:!try !try.out
+?LINT:set d_keepsig
+: see if signals are kept
+echo " "
+echo "Checking to see if signal handlers stick around..." >&4
+$cat >try.c <<'EOCP'
+foo() {}
+int main()
+ signal(2, foo);
+ kill(getpid(), 2);
+ kill(getpid(), 2);
+ printf("abc\n");
+set try
+if eval $compile; then
+?X: On AIX a single ./try will not work (with ksh)
+?X: Backquotes required on Linux and SGI (prevents "ambiguous output redirect")
+?X: (reported by Xavier LeVourch <>)
+ echo `sh -c $run ./try >try.out 2>/dev/null` >/dev/null
+ if $contains abc try.out >/dev/null 2>&1; then
+ echo "Yes, they do."
+ val="$define";
+ else
+ echo "No, they don't."
+ fi
+ $echo $n "(I can't seem to compile the test program. Assuming $c"
+ if ./bsd; then
+ echo "they do.)"
+ val="$define"
+ else
+ echo "they don't.)"
+ fi
+set d_keepsig
+eval $setvar
+$rm -f try*