1#!/bin/sh
2#
3# A helper script for Makeasm.am .S.lo rule.
4
5# Copyright 2001 Free Software Foundation, Inc.
6#
7# This file is part of the GNU MP Library.
8#
9# The GNU MP Library is free software; you can redistribute it and/or modify
10# it under the terms of the GNU Lesser General Public License as published by
11# the Free Software Foundation; either version 3 of the License, or (at your
12# option) any later version.
13#
14# The GNU MP Library is distributed in the hope that it will be useful, but
15# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
16# or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
17# License for more details.
18#
19# You should have received a copy of the GNU Lesser General Public License
20# along with the GNU MP Library.  If not, see http://www.gnu.org/licenses/.
21
22
23# Usage: cpp-cc --cpp=CPP CC ... file.S ...
24#
25# Process file.S with the given CPP command plus any -D options in the
26# rest of the arguments, then assemble with the given CC plus all
27# arguments.
28#
29# The CPP command must be in a single --cpp= argument, and will be
30# split on whitespace.  It should include -I options required.
31#
32# When CC is invoked, file.S is replaced with a temporary .s file
33# which is the CPP output.
34#
35# Any lines starting with "#" are removed from the CPP output, usually
36# these will be #line and #file markers from CPP, but they might also
37# be comments from the .S.
38#
39# To allow parallel builds, the temp file name is based on the .S file
40# name, which will be the output object filename for all uses we put
41# this script to.
42
43CPP=
44CPPDEFS=
45CC=
46S=
47SEEN_O=no
48
49for i in "$@"; do
50  case $i in
51    --cpp=*)
52      CPP=`echo "$i" | sed 's/^--cpp=//'`
53      ;;
54    -D*)
55      CPPDEFS="$CPPDEFS $i"
56      CC="$CC $i"
57      ;;
58    *.S)
59      if test -n "$S"; then
60        echo "Only one .S file permitted"
61        exit 1
62      fi
63      BASENAME=`echo "$i" | sed -e 's/\.S$//' -e 's/^.*[\\/:]//'`
64      S=$i
65      TMP_I=tmp-$BASENAME.i
66      TMP_S=tmp-$BASENAME.s
67      CC="$CC $TMP_S"
68      ;;
69    -o)
70      SEEN_O=yes
71      CC="$CC $i"
72      ;;
73    *)
74      CC="$CC $i"
75      ;;
76  esac
77done
78
79if test -z "$CPP"; then
80  echo "No --cpp specified"
81  exit 1
82fi
83
84if test -z "$S"; then
85  echo "No .S specified"
86  exit 1
87fi
88
89# Libtool adds it's own -o when sending output to .libs/foo.o, but not
90# when just wanting foo.o in the current directory.  We need an
91# explicit -o in both cases since we're assembling tmp-foo.s.
92#
93if test $SEEN_O = no; then
94  CC="$CC -o $BASENAME.o"
95fi
96
97echo "$CPP $CPPDEFS $S >$TMP_I"
98$CPP $CPPDEFS $S >$TMP_I || exit
99
100echo "grep -v '^#' $TMP_I >$TMP_S"
101grep -v '^#' $TMP_I >$TMP_S
102
103echo "$CC"
104$CC || exit
105
106# Comment this out to preserve .s intermediates
107rm -f $TMP
108