#!/bin/sh

 #

 # Generate dependencies from a list of source files

 # Check to make sure our environment variables are set

 if test x"$INCLUDE" = x -o x"$SOURCES" = x -o x"$objects" = x -o x"$output" = x; then

     echo "SOURCES, INCLUDE, objects, and output needs to be set"

     exit 1

 fi

 cache_prefix=".#$$"

 generate_var()

 {

     echo $1 | sed -e 's|^.*/||' -e 's|\.|_|g'

 }

 search_deps()

 {

     base=`echo $1 | sed 's|/[^/]*$||'`

     grep '#include "' <$1 | sed -e 's|.*"\([^"]*\)".*|\1|' | \

     while read file

     do cache=${cache_prefix}_`generate_var $file`

        if test -f $cache; then

           : # We already ahve this cached

        else

            : >$cache

            for path in $base `echo $INCLUDE | sed 's|-I||g'`

            do dep="$path/$file"

               if test -f "$dep"; then

                  echo "	$dep \\" >>$cache

                  search_deps $dep >>$cache

                  break

               fi

            done

        fi

        cat $cache

     done

 }

 :>${output}.new

 for src in $SOURCES

 do  echo "Generating dependencies for $src"

     ext=`echo $src | sed 's|.*\.\(.*\)|\1|'`

     obj=`echo $src | sed "s|^.*/\([^ ]*\)\..*|$objects/\1.lo|g"`

     echo "$obj: $src \\" >>${output}.new

     search_deps $src | sort | uniq >>${output}.new

     case $ext in

         c) cat >>${output}.new <<__EOF__

 	\$(LIBTOOL) --mode=compile \$(CC) \$(CFLAGS) -c $src  -o \$@

 __EOF__

         ;;

         cc) cat >>${output}.new <<__EOF__

 	\$(LIBTOOL) --mode=compile \$(CC) \$(CFLAGS) -c $src  -o \$@

 __EOF__

         ;;

         m) cat >>${output}.new <<__EOF__

 	\$(LIBTOOL) --mode=compile \$(CC) \$(CFLAGS) -c $src  -o \$@

 __EOF__

         ;;

         asm) cat >>${output}.new <<__EOF__

 	\$(LIBTOOL) --tag=CC --mode=compile \$(auxdir)/strip_fPIC.sh \$(NASM) $src -o \$@

 __EOF__

         ;;

         *)   echo "Unknown file extension: $ext";;

     esac

     echo "" >>${output}.new

 done

 mv ${output}.new ${output}