1 #! /bin/sh 2 3 # Wrapper for compilers which do not understand `-c -o'. 4 5 # Copyright 1999, 2000 Free Software Foundation, Inc. 6 # Written by Tom Tromey <tromey (at] cygnus.com>. 7 # 8 # This program is free software; you can redistribute it and/or modify 9 # it under the terms of the GNU General Public License as published by 10 # the Free Software Foundation; either version 2, or (at your option) 11 # any later version. 12 # 13 # This program is distributed in the hope that it will be useful, 14 # but WITHOUT ANY WARRANTY; without even the implied warranty of 15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 # GNU General Public License for more details. 17 # 18 # You should have received a copy of the GNU General Public License 19 # along with this program; if not, write to the Free Software 20 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 21 22 # As a special exception to the GNU General Public License, if you 23 # distribute this file as part of a program that contains a 24 # configuration script generated by Autoconf, you may include it under 25 # the same distribution terms that you use for the rest of that program. 26 27 # Usage: 28 # compile PROGRAM [ARGS]... 29 # `-o FOO.o' is removed from the args passed to the actual compile. 30 31 prog=$1 32 shift 33 34 ofile= 35 cfile= 36 args= 37 while test $# -gt 0; do 38 case "$1" in 39 -o) 40 # configure might choose to run compile as `compile cc -o foo foo.c'. 41 # So we do something ugly here. 42 ofile=$2 43 shift 44 case "$ofile" in 45 *.o | *.obj) 46 ;; 47 *) 48 args="$args -o $ofile" 49 ofile= 50 ;; 51 esac 52 ;; 53 *.c) 54 cfile=$1 55 args="$args $1" 56 ;; 57 *) 58 args="$args $1" 59 ;; 60 esac 61 shift 62 done 63 64 if test -z "$ofile" || test -z "$cfile"; then 65 # If no `-o' option was seen then we might have been invoked from a 66 # pattern rule where we don't need one. That is ok -- this is a 67 # normal compilation that the losing compiler can handle. If no 68 # `.c' file was seen then we are probably linking. That is also 69 # ok. 70 exec "$prog" $args 71 fi 72 73 # Name of file we expect compiler to create. 74 cofile=`echo $cfile | sed -e 's|^.*/||' -e 's/\.c$/.o/'` 75 76 # Create the lock directory. 77 # Note: use `[/.-]' here to ensure that we don't use the same name 78 # that we are using for the .o file. Also, base the name on the expected 79 # object file name, since that is what matters with a parallel build. 80 lockdir=`echo $cofile | sed -e 's|[/.-]|_|g'`.d 81 while true; do 82 if mkdir $lockdir > /dev/null 2>&1; then 83 break 84 fi 85 sleep 1 86 done 87 # FIXME: race condition here if user kills between mkdir and trap. 88 trap "rmdir $lockdir; exit 1" 1 2 15 89 90 # Run the compile. 91 "$prog" $args 92 status=$? 93 94 if test -f "$cofile"; then 95 mv "$cofile" "$ofile" 96 fi 97 98 rmdir $lockdir 99 exit $status 100
