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1 files changed, 107 insertions, 0 deletions

diff --git a/scripts/compile b/scripts/compile
new file mode 100755
index 000000000..ac07cc541
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+++ b/scripts/compile
@@ -0,0 +1,107 @@
+#! /bin/sh
+
+# Wrapper for compilers which do not understand `-c -o'.
+
+# Copyright 1999, 2000 Free Software Foundation, Inc.
+# Written by Tom Tromey <tromey@cygnus.com>.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+# As a special exception to the GNU General Public License, if you
+# distribute this file as part of a program that contains a
+# configuration script generated by Autoconf, you may include it under
+# the same distribution terms that you use for the rest of that program.
+
+# Usage:
+# compile PROGRAM [ARGS]...
+# `-o FOO.o' is removed from the args passed to the actual compile.
+
+# Usage statement added by Billy Biggs <vektor@dumbterm.net>.
+if [ -z $1 ]; then
+    echo "Wrapper for compilers which do not understand '-c -o'."
+    echo "usage: compile PROGRAM [ARGS]..."
+    echo "'-o FOO.o' is removed from the args passed to the actual compile."
+    exit 1
+fi
+
+prog=$1
+shift
+
+ofile=
+cfile=
+args=
+while test $# -gt 0; do
+   case "$1" in
+    -o)
+       # configure might choose to run compile as `compile cc -o foo foo.c'.
+       # So we do something ugly here.
+       ofile=$2
+       shift
+       case "$ofile" in
+	*.o | *.obj)
+	   ;;
+	*)
+	   args="$args -o $ofile"
+	   ofile=
+	   ;;
+       esac
+       ;;
+    *.c)
+       cfile=$1
+       args="$args $1"
+       ;;
+    *)
+       args="$args $1"
+       ;;
+   esac
+   shift
+done
+
+if test -z "$ofile" || test -z "$cfile"; then
+   # If no `-o' option was seen then we might have been invoked from a
+   # pattern rule where we don't need one.  That is ok -- this is a
+   # normal compilation that the losing compiler can handle.  If no
+   # `.c' file was seen then we are probably linking.  That is also
+   # ok.
+   exec "$prog" $args
+fi
+
+# Name of file we expect compiler to create.
+cofile=`echo $cfile | sed -e 's|^.*/||' -e 's/\.c$/.o/'`
+
+# Create the lock directory.
+# Note: use `[/.-]' here to ensure that we don't use the same name
+# that we are using for the .o file.  Also, base the name on the expected
+# object file name, since that is what matters with a parallel build.
+lockdir=`echo $cofile | sed -e 's|[/.-]|_|g'`.d
+while true; do
+   if mkdir $lockdir > /dev/null 2>&1; then
+      break
+   fi
+   sleep 1
+done
+# FIXME: race condition here if user kills between mkdir and trap.
+trap "rmdir $lockdir; exit 1" 1 2 15
+
+# Run the compile.
+"$prog" $args
+status=$?
+
+if test -f "$cofile"; then
+   mv "$cofile" "$ofile"
+fi
+
+rmdir $lockdir
+exit $status