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 either:
11#
12#    * the GNU Lesser General Public License as published by the Free
13#      Software Foundation; either version 3 of the License, or (at your
14#      option) any later version.
15#
16#  or
17#
18#    * the GNU General Public License as published by the Free Software
19#      Foundation; either version 2 of the License, or (at your option) any
20#      later version.
21#
22#  or both in parallel, as here.
23#
24#  The GNU MP Library is distributed in the hope that it will be useful, but
25#  WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
26#  or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
27#  for more details.
28#
29#  You should have received copies of the GNU General Public License and the
30#  GNU Lesser General Public License along with the GNU MP Library.  If not,
31#  see https://www.gnu.org/licenses/.
32
33
34# Usage: cpp-cc --cpp=CPP CC ... file.S ...
35#
36# Process file.S with the given CPP command plus any -D options in the
37# rest of the arguments, then assemble with the given CC plus all
38# arguments.
39#
40# The CPP command must be in a single --cpp= argument, and will be
41# split on whitespace.  It should include -I options required.
42#
43# When CC is invoked, file.S is replaced with a temporary .s file
44# which is the CPP output.
45#
46# Any lines starting with "#" are removed from the CPP output, usually
47# these will be #line and #file markers from CPP, but they might also
48# be comments from the .S.
49#
50# To allow parallel builds, the temp file name is based on the .S file
51# name, which will be the output object filename for all uses we put
52# this script to.
53
54CPP=
55CPPDEFS=
56CC=
57S=
58SEEN_O=no
59
60for i in "$@"; do
61  case $i in
62    --cpp=*)
63      CPP=`echo "$i" | sed 's/^--cpp=//'`
64      ;;
65    -D*)
66      CPPDEFS="$CPPDEFS $i"
67      CC="$CC $i"
68      ;;
69    *.S)
70      if test -n "$S"; then
71        echo "Only one .S file permitted"
72        exit 1
73      fi
74      BASENAME=`echo "$i" | sed -e 's/\.S$//' -e 's/^.*[\\/:]//'`
75      S=$i
76      TMP_I=tmp-$BASENAME.i
77      TMP_S=tmp-$BASENAME.s
78      CC="$CC $TMP_S"
79      ;;
80    -o)
81      SEEN_O=yes
82      CC="$CC $i"
83      ;;
84    *)
85      CC="$CC $i"
86      ;;
87  esac
88done
89
90if test -z "$CPP"; then
91  echo "No --cpp specified"
92  exit 1
93fi
94
95if test -z "$S"; then
96  echo "No .S specified"
97  exit 1
98fi
99
100# Libtool adds it's own -o when sending output to .libs/foo.o, but not
101# when just wanting foo.o in the current directory.  We need an
102# explicit -o in both cases since we're assembling tmp-foo.s.
103#
104if test $SEEN_O = no; then
105  CC="$CC -o $BASENAME.o"
106fi
107
108echo "$CPP $CPPDEFS $S >$TMP_I"
109$CPP $CPPDEFS $S >$TMP_I || exit
110
111echo "grep -v '^#' $TMP_I >$TMP_S"
112grep -v '^#' $TMP_I >$TMP_S
113
114echo "$CC"
115$CC || exit
116
117# Comment this out to preserve .s intermediates
118rm -f $TMP
119