New file from Ralf.

tools/build/multigen

@@ -0,0 +1,165 @@
+#!/bin/sh
+
+version=0.1
+verbose=0
+target=
+custom=0
+config=0
+
+usage()
+{
+program=`basename $0`
+cat << EOF
+
+\`$program' generates RTEMS custom/\*.cfgs and config-files for gcc multilib
+variants a target's gcc supports
+
+Usage: $program [options]
+
+Options:
+	--target=STRING         target
+        --custom		generate make/custom/*.cfg files
+        --config                generate config scripts
+        --rtems=DIR             use \`DIR\' as location of RTEMS source tree
+	-v, --verbose           verbose
+	-h, --help              Print this usage
+	--version               Print version and exit
+
+Examples:
+$program --config --target=sh-rtems --rtems=/usr/src/rtems-4.5.0
+	Generates config scripts for all possible bare BSPs from all
+	valid multilib variants sh-rtems-gcc supports
+
+$program --custom --target=sh-rtems --rtems=/usr/src/rtems-4.5.0
+	Generates /usr/src/rtems-4.5.0/make/custom/*.cfg files
+        for all possible bare BSPs from the multilib variants 
+        sh-rtems-gcc supports
+
+Written by Ralf Corsepius <corsepiu@faw.uni-ulm.de>
+EOF
+}
+
+while test $# -gt 0; do
+  case "$1" in
+  --rtems=*)
+    rtems_srcdir=`echo "$1" | sed -e 's%--rtems=\(.*\)%\1%g'`
+    ;;
+  --target=*)
+    target=`echo "$1" | sed -e 's%--target=\(.*\)%\1%g'`
+    ;;
+  -v|--verbose)
+    verbose=1
+    ;;
+  --custom)
+    custom=1
+    ;;
+  --config)
+    config=1
+    ;;
+  --version)
+    echo `basename $0` version $version
+    exit 0
+    ;;
+  -h|--help)
+    usage
+    exit 1
+    ;;
+  *)
+    echo "unknown option $1"
+    usage
+    exit 1
+    ;;
+  esac
+  shift
+done
+
+if test $# -gt 0; then
+  echo "Invalid number of arguments"
+  exit 1
+fi
+
+if test x$target = x; then
+  echo "Missing required option:"
+  echo "	--target"
+  exit 1
+fi
+
+if test x$rtems_srcdir = x; then
+  echo "Missing required option:"
+  echo "	--rtems"
+  exit 1
+fi
+
+if test $config -eq 0 && test $custom -eq 0; then
+  echo "Missing required option:"
+  echo "	--config"
+  echo "	--custom"
+  echo " (At least one of these is required)"
+  exit 1
+fi
+
+if test x$target != x ;then
+target_prefix=$target-
+fi
+ 
+# Check for CC
+saved_IFS=$IFS; IFS=":"
+for i in $PATH; do
+  if test -f $i/${target_prefix}gcc; then
+    CC=$i/${target_prefix}gcc
+    break
+  fi
+done
+IFS=$saved_IFS
+
+if test x$CC = x; then
+  echo "No valid gcc found"
+  exit 1
+fi
+test $verbose -gt 0 && echo "Using $CC"
+
+for i in `${CC} --print-multi-lib 2>/dev/null`; do 
+  dir=`echo $i | sed -e 's/;.*$//'`
+  case $dir in
+  .) f=$target
+     flags=""
+     ;;
+  *) f=`echo $target-$dir | sed -e 's%\/%-%g'`
+     flags=`echo $i | sed -e 's/^[^;]*;//' -e 's/@/ -/g'`
+     ;;
+  esac
+
+  if test $config -gt 0; then
+    cfg="rtems-config.$f"
+    test $verbose -gt 0 && echo "Generating: $cfg"
+
+cat << EOF > $cfg
+#!/bin/sh
+
+${rtems_srcdir}/configure --target=$target \\
+'--enable-bare-cpu-cflags=$flags' \\
+--enable-rtemsbsp="bare" \\
+--enable-bare-cpu-model=NONE \\
+--disable-networking \\
+--disable-tests \\
+--enable-maintainer-mode
+EOF
+    chmod +x $cfg
+  fi
+
+  if test $custom -gt 0; then
+    cfg=${rtems_srcdir}/make/custom/bare-$f.cfg
+    test $verbose -gt 0 && echo "Generating: $cfg"
+cat << EOF > $cfg
+#  Config file for the bare-$f BSP
+
+BARE_CPU_FLAGS=$flags
+BARE_CPU_MODEL=NONE
+
+include \$(RTEMS_ROOT)/make/custom/bare.cfg
+EOF
+
+  fi
+done
+
+exit 0