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:
# SCCS: @(#)sigtool 1.4 (98/09/08)
#
# UniSoft Ltd., London, England
#
# Copyright (c) 1998 The Open Group
# All rights reserved.
#
# No part of this source code may be reproduced, stored in a retrieval
# system, or transmitted, in any form or by any means, electronic,
# mechanical, photocopying, recording or otherwise, except as stated in
# the end-user licence agreement, without the prior permission of the
# copyright owners.
# A copy of the end-user licence agreement is contained in the file
# Licence which accompanies this distribution.
#
# Motif, OSF/1, UNIX and the "X" device are registered trademarks and
# IT DialTone and The Open Group are trademarks of The Open Group in
# the US and other countries.
#
# X/Open is a trademark of X/Open Company Limited in the UK and other
# countries.
#
# ************************************************************************
#
# SCCS: @(#)sigtool 1.4 98/09/08 TETware release 3.3
# NAME: sigtool
# PRODUCT: TETware
# AUTHOR: Andrew Dingwall, UniSoft Ltd.
# DATE CREATED: September 1998
#
# DESCRIPTION:
# Shell script to generate the signal lists used in a defines.mk
# file when building the xpg3sh API.
#
# usage:
# [CC=cc-name] sh sigtool [cc-options ...]
#
# This script creates a small C program and compiles it.
# If the C compiler is not called cc on your system, you should set
# the CC environment variable to the name of the C compiler.
#
# On most systems, cc-options are not required.
# Indeed, since this script looks for the value of NSIG (or _NSIG)
# in <signal.h>, options that enable ANSI C or feature test macros that
# restrict the namespace should not be specified.
#
# MODIFICATIONS:
#
# ************************************************************************
# don't run this script on a Win32 system
case `uname -s` in
Windows_NT|Windows_95|DOS)
echo "$0: Win32 systems do not really support signals" 1>&2
echo "$0: use the signal values defined in src/defines/msc+mks.mk" 1>&2
exit 1
;;
esac
# temporary file names
tmp1_c=tmp$$-1.c
tmp2_c=tmp$$-2.c
tmp3_c=tmp$$-3.c
tmp4=tmp$$-4
tmp5=tmp$$-5
# arrange to clean up on exit
trap 's=$?; rm -f $tmp1_c $tmp2_c $tmp3_c $tmp4 $tmp5; exit $s' 0
trap 'exit $?' 1 2 3 13 15
# lists of signal names
std_sigs1="SIGHUP SIGINT SIGQUIT SIGILL SIGABRT SIGFPE SIGPIPE SIGALRM"
std_sigs2="SIGTERM SIGUSR1 SIGUSR2 SIGTSTP SIGCONT SIGTTIN SIGTTOU"
spec_sigs="SIGKILL SIGCHLD SIGSTOP SIGSEGV"
# generate the signal evaluation program
for sig in $std_sigs1 $std_sigs2
do
cat <<!EOF
#ifdef $sig
printf(" %d", $sig);
#else
printf(" $sig");
#endif
!EOF
done > $tmp1_c
for sig in $spec_sigs
do
cat <<!EOF
#ifdef $sig
printf(" %d", $sig);
#else
printf(" $sig");
#endif
!EOF
done > $tmp2_c
cat > $tmp3_c <<!EOF
#include <stdio.h>
#include <signal.h>
int main()
{
printf("SH_STD_SIGNALS =");
#include "$tmp1_c"
printf("\nSH_SPEC_SIGNALS =");
#include "$tmp2_c"
printf("\nSH_NSIG = ");
#ifdef NSIG
printf("%d", NSIG);
#else
# ifdef _NSIG
printf("%d", _NSIG);
# else
printf("NSIG");
# endif
#endif
printf("\n");
return(0);
}
!EOF
# compile the signal evaluation program
${CC:-cc} $* -o $tmp4 $tmp3_c
if test $? -ne 0
then
echo "$0: can't compile signal evaluation program" 1>&2
(exit 1)
exit 1
fi
# generate the awk script
cat > $tmp5 <<!EOF
BEGIN {
printf("# The following signal values have been generated by sigtool.\n");
printf("# It is assumed that the shell is capable of trapping all\n");
printf("# the signals except $spec_sigs\n");
printf("# If this is not true on your system you will need to edit\n");
printf("# the values that follow.\n\n");
errors = 0;
done_std_sigs = 0;
done_spec_sigs = 0;
done_nsig = 0;
}
\$2 != "=" {
next;
}
\$1 == "SH_STD_SIGNALS" {
printf("# standard signals:\n");
printf("# $std_sigs1\n");
printf("# $std_sigs2\n");
done_std_sigs = 1;
}
\$1 == "SH_SPEC_SIGNALS" {
printf("# signals that cannot be handled by the shell:\n");
printf("# $spec_sigs\n");
done_spec_sigs = 1;
}
\$1 == "SH_NSIG" {
printf("# highest signal number supported by the shell + 1\n");
done_nsig = 1;
}
{
for (n = 3; n <= NF; n++)
if (\$n ~ /[^0-9]/) {
printf("*** cannot determine a value for %s\n", \$n);
errors++;
}
printf("%s\n\n", \$0);
}
END {
if (errors || !done_std_sigs || !done_spec_sigs || !done_nsig) {
printf("You will need to supply the values that could not\n");
printf("be determined automatically by sigtool.\n");
printf("For details, please refer to the TETware Installation\n");
printf("Guide for UNIX Operating Systems.\n");
}
}
!EOF
# finally, generate the signal lists
./$tmp4 | awk -f $tmp5
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