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100 lines
2.7 KiB
100 lines
2.7 KiB
1 year ago
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#! /bin/sh
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# Wrapper for compilers which do not understand `-c -o'.
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# Copyright 1999, 2000 Free Software Foundation, Inc.
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# Written by Tom Tromey <tromey@cygnus.com>.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2, or (at your option)
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# any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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# As a special exception to the GNU General Public License, if you
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# distribute this file as part of a program that contains a
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# configuration script generated by Autoconf, you may include it under
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# the same distribution terms that you use for the rest of that program.
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# Usage:
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# compile PROGRAM [ARGS]...
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# `-o FOO.o' is removed from the args passed to the actual compile.
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prog=$1
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shift
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ofile=
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cfile=
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args=
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while test $# -gt 0; do
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case "$1" in
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-o)
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# configure might choose to run compile as `compile cc -o foo foo.c'.
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# So we do something ugly here.
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ofile=$2
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shift
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case "$ofile" in
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*.o | *.obj)
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;;
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*)
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args="$args -o $ofile"
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ofile=
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;;
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esac
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;;
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*.c)
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cfile=$1
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args="$args $1"
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;;
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*)
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args="$args $1"
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;;
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esac
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shift
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done
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if test -z "$ofile" || test -z "$cfile"; then
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# If no `-o' option was seen then we might have been invoked from a
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# pattern rule where we don't need one. That is ok -- this is a
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# normal compilation that the losing compiler can handle. If no
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# `.c' file was seen then we are probably linking. That is also
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# ok.
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exec "$prog" $args
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fi
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# Name of file we expect compiler to create.
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cofile=`echo $cfile | sed -e 's|^.*/||' -e 's/\.c$/.o/'`
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# Create the lock directory.
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# Note: use `[/.-]' here to ensure that we don't use the same name
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# that we are using for the .o file. Also, base the name on the expected
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# object file name, since that is what matters with a parallel build.
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lockdir=`echo $cofile | sed -e 's|[/.-]|_|g'`.d
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while true; do
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if mkdir $lockdir > /dev/null 2>&1; then
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break
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fi
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sleep 1
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done
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# FIXME: race condition here if user kills between mkdir and trap.
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trap "rmdir $lockdir; exit 1" 1 2 15
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# Run the compile.
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"$prog" $args
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status=$?
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if test -f "$cofile"; then
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mv "$cofile" "$ofile"
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fi
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rmdir $lockdir
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exit $status
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