#!/bin/sh

#

# A helper script for Makeasm.am .S.lo rule.

# Copyright 2001 Free Software Foundation, Inc.

#

#  This file is part of the GNU MP Library.

#

#  The GNU MP Library is free software; you can redistribute it and/or modify

#  it under the terms of either:

#

#    * the GNU Lesser General Public License as published by the Free

#      Software Foundation; either version 3 of the License, or (at your

#      option) any later version.

#

#  or

#

#    * the GNU General Public License as published by the Free Software

#      Foundation; either version 2 of the License, or (at your option) any

#      later version.

#

#  or both in parallel, as here.

#

#  The GNU MP Library 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 copies of the GNU General Public License and the

#  GNU Lesser General Public License along with the GNU MP Library.  If not,

#  see https://www.gnu.org/licenses/.

# Usage: cpp-cc --cpp=CPP CC ... file.S ...

#

# Process file.S with the given CPP command plus any -D options in the

# rest of the arguments, then assemble with the given CC plus all

# arguments.

#

# The CPP command must be in a single --cpp= argument, and will be

# split on whitespace.  It should include -I options required.

#

# When CC is invoked, file.S is replaced with a temporary .s file

# which is the CPP output.

#

# Any lines starting with "#" are removed from the CPP output, usually

# these will be #line and #file markers from CPP, but they might also

# be comments from the .S.

#

# To allow parallel builds, the temp file name is based on the .S file

# name, which will be the output object filename for all uses we put

# this script to.

CPP=

CPPDEFS=

CC=

S=

SEEN_O=no

for i in "$@"; do

  case $i in

    --cpp=*)

      CPP=`echo "$i" | sed 's/^--cpp=//'`

      ;;

    -D*)

      CPPDEFS="$CPPDEFS $i"

      CC="$CC $i"

      ;;

    *.S)

      if test -n "$S"; then

        echo "Only one .S file permitted"

        exit 1

      fi

      BASENAME=`echo "$i" | sed -e 's/\.S$//' -e 's/^.*[\\/:]//'`

      S=$i

      TMP_I=tmp-$BASENAME.i

      TMP_S=tmp-$BASENAME.s

      CC="$CC $TMP_S"

      ;;

    -o)

      SEEN_O=yes

      CC="$CC $i"

      ;;

    *)

      CC="$CC $i"

      ;;

  esac

done

if test -z "$CPP"; then

  echo "No --cpp specified"

  exit 1

fi

if test -z "$S"; then

  echo "No .S specified"

  exit 1

fi

# Libtool adds it's own -o when sending output to .libs/foo.o, but not

# when just wanting foo.o in the current directory.  We need an

# explicit -o in both cases since we're assembling tmp-foo.s.

#

if test $SEEN_O = no; then

  CC="$CC -o $BASENAME.o"

fi

echo "$CPP $CPPDEFS $S >$TMP_I"

$CPP $CPPDEFS $S >$TMP_I || exit

echo "grep -v '^#' $TMP_I >$TMP_S"

grep -v '^#' $TMP_I >$TMP_S

echo "$CC"

$CC || exit

# Comment this out to preserve .s intermediates

rm -f $TMP