#!/bin/sh
# mkdeps.sh
#
# Copyright (C) 2007 Gregory Nutt. All rights reserved.
# Author: Gregory Nutt <spudmonkey@racsa.co.cr>
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in
# the documentation and/or other materials provided with the
# distribution.
# 3. Neither the name Gregory Nutt nor the names of its contributors may be
# used to endorse or promote products derived from this software
# without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#
#
# Usage:
function show_usage ()
{
echo ""
echo "$progname [OPTIONS] CC -- CFLAGS -- file [file [file...]]"
echo ""
echo "Where:"
echo " CC"
echo " A variable number of arguments that define how to execute the compiler"
echo " CFLAGS"
echo " The compiler compilation flags"
echo " file"
echo " One or more C files whose dependencies will be checked. Each file is expected"
echo " to reside in the current directory unless --dep-path is provided on the command line"
echo ""
echo "And [OPTIONS] include:"
echo " --dep-debug"
echo " Enable script debug"
echo " --dep-path <path>"
echo " Do not look in the current directory for the file. Instead, look in <path> to see"
echo " if the file resides there. --dep-path may be used multiple times to specifid"
echo " multiple alternative location"
echo " --help"
echo " Shows this message and exits"
exit 1
}
function dodep ()
{
unset fullpath
if [ -z "$altpath" ]; then
if [ -r $1 ]; then
fullpath=$1
else
echo "# ERROR: No readable file at $1"
show_usage
fi
else
for path in $altpath; do
tmppath=$path/$1
if [ -r $tmppath ]; then
fullpath=$tmppath
break;
fi
done
if [ -z "$fullpath" ]; then
echo "# ERROR: No readable file for $1 found at any location"
show_usage
fi
fi
$cc -M $cflags $fullpath || \
{ echo "# ERROR: $cc -M $cflags $fullpath FAILED" ; exit 4 ; }
}
unset cc
unset cflags
unset files
unset args
unset altpath
# Accumulate CFLAGS up to "--"
progname=$0
while [ ! -z "$1" ]; do
case $1 in
-- )
cc=$cflags
cflags=$args
args=
;;
--dep-debug )
if [ -z "$args" ]; then
set -x
else
args="$args $1"
fi
;;
--dep-path )
if [ -z "$args" ]; then
shift
altpath="$altpath $1"
else
args="$args $1"
fi
;;
--help )
show_usage
;;
*)
args="$args $1"
;;
esac
shift
done
files=$args
if [ -z "$cc" ]; then
echo "ERROR: No compiler specified"
show_usage
exit 1
fi
if [ -z "$files" ]; then
echo "No files specified"
show_usage
exit 2
fi
for file in $files ; do
dodep $file
done
