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#!/bin/sh
################################################################################
### Copyright 2011 VMware, Inc. All rights reserved.
###
### This program is free software; you can redistribute it and/or modify
### it under the terms of version 2 of the GNU General Public License as
### published by the Free Software Foundation.
###
### 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
################################################################################
#
# rpcgen_wrapper.sh - executes rpcgen.
#
# rpcgen is very finicky in the way it's invoked. It tends to pollute the
# generated files with all sorts of weird stuff if you specify full paths to the
# files being compiled. So this script copies the source file (plus any other
# needed files) to the build directory before invoking rpcgen.
#
# The pattern to use in Makefile.am is:
#
# . have separate rules for generating the header and the source files, both
# invoking rpcgen_wrapper.sh
# . make the source depend on the header
#
# The script assumes that $(builddir) is ".". The generated header is copied
# to the "lib/include" directory under $(top_builddir).
#
# Arguments:
# input ($1): path of .x file, relative to $(top_srcdir)
# output ($2): name of output header file
# extra ($@): other files to copy into the build directory; paths
# relative to $(top_srcdir)
#
set -e
rpcgen=@RPCGEN@
rpcgenflags="@RPCGENFLAGS@"
top_srcdir="@abs_top_srcdir@"
top_builddir="@abs_top_builddir@"
input=$1
output=$2
if [ -z "$output" ]; then
echo "Invalid arguments." >&2
exit 1
fi
shift 2
# need_update($target, $source)
need_update()
{
test ! -f $1 -o $1 -ot $2
}
# do_rpcgen($type)
# type is either "-h" or "-c"
do_rpcgen()
{
if need_update $output `basename $input`; then
rm -f $output
fi
$rpcgen $rpcgenflags $1 -o $output `basename $input`
sed 's,rpc/rpc\.h,vmxrpc.h,' $output > ${output}.tmp
mv ${output}.tmp $output
}
do_header()
{
#
# Check both if srcdir != blddir, and also if we're copying a .x file from
# a different component.
#
top_builddir=`cd $top_builddir && pwd`
top_srcdir=`cd $top_srcdir && pwd`
if test $top_builddir != $top_srcdir -o \
`pwd` != `dirname $top_builddir/$input`; then
for f in $@; do
if need_update `basename $f` $top_srcdir/$f; then
cp -f $top_srcdir/$f .
fi
done
if need_update `basename $input` $top_srcdir/$input; then
cp -f $top_srcdir/$input .
fi
fi
do_rpcgen "-h"
# Export the generated header.
mkdir -p $top_builddir/lib/include/guestrpc
cp $output $top_builddir/lib/include/guestrpc
}
do_impl()
{
do_rpcgen "-c"
}
case $output in
*.h) do_header "$@" ;;
*.c) do_impl "$@" ;;
*) echo "Unknown output file type: $output" ;;
esac
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