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      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 
     54 CPP=
     55 CPPDEFS=
     56 CC=
     57 S=
     58 SEEN_O=no
     59 
     60 for 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 $i"
     86       ;;
     87   esac
     88 done
     89 
     90 if test -z "$CPP"; then
     91   echo "No --cpp specified"
     92   exit 1
     93 fi
     94 
     95 if test -z "$S"; then
     96   echo "No .S specified"
     97   exit 1
     98 fi
     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 #
    104 if test $SEEN_O = no; then
    105   CC="$CC -o $BASENAME.o"
    106 fi
    107 
    108 echo "$CPP $CPPDEFS $S >$TMP_I"
    109 $CPP $CPPDEFS $S >$TMP_I || exit
    110 
    111 echo "grep -v '^#' $TMP_I >$TMP_S"
    112 grep -v '^#' $TMP_I >$TMP_S
    113 
    114 echo "$CC"
    115 $CC || exit
    116 
    117 # Comment this out to preserve .s intermediates
    118 rm -f $TMP
    119