#!/bin/sh
# Shell script to build GNU Make in the absence of any 'make' program.
# @configure_input@

# Copyright (C) 1993-2019 Free Software Foundation, Inc.
# This file is part of GNU Make.
#
# GNU Make is free software; you can redistribute it and/or modify it under
# the terms of the GNU General Public License as published by the Free Software
# Foundation; either version 3 of the License, or (at your option) any later
# version.
#
# GNU Make 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 a copy of the GNU General Public License along with
# this program.  If not, see <http://www.gnu.org/licenses/>.

# See Makefile.in for comments describing these variables.

LIBOBJDIR=lib/
U=

top_srcdir='@top_srcdir@'
CC='@CC@'
AR='@AR@'
CFLAGS='@CFLAGS@ @GUILE_CFLAGS@'
CPPFLAGS='@CPPFLAGS@'
DEFS='@DEFS@'
ARFLAGS='@ARFLAGS@'
LDFLAGS='@AM_LDFLAGS@ @LDFLAGS@'
ALLOCA='@ALLOCA@'
LOADLIBES='@LIBS@ @GUILE_LIBS@ @LIBINTL@'
REMOTE='@REMOTE@'
OBJEXT='@OBJEXT@'
EXEEXT='@EXEEXT@'

# Common prefix for machine-independent installed files.
prefix='@prefix@'
# Common prefix for machine-dependent installed files.
exec_prefix=`eval echo @exec_prefix@`
# Directory to find libraries in for '-lXXX'.
libdir=$exec_prefix/lib
# Directory to search by default for included makefiles.
includedir=$prefix/include

localedir=$prefix/share/locale

defines="-DLOCALEDIR=\"$localedir\" -DLIBDIR=\"$libdir\" -DINCLUDEDIR=\"$includedir\""

# Look up a make variable value
# It can handle very simple recursion, where variables are separate words
get_mk_var ()
{
  file=$1
  var=$2

  val=
  v=$(sed -e :a -e '/\\$/N; s/\\\n//; ta' "$file" | sed -n "s=^ *$var *\= *==p")
  for w in $v; do
      case $w in
          (\$[\(\{]*[\)\}]) w=${w#\$[\(\{]}; w=$(get_mk_var "$file" "${w%[\)\}]}") ;;
      esac
      val="${val:+$val }$w"
  done

  printf %s "$val"
}

# Get source files provided from gnulib
LIBOBJS=
for lc in $(get_mk_var lib/Makefile libgnu_a_SOURCES); do
  case $lc in
    (*.c) LIBOBJS="${LIBOBJS:+$LIBOBJS }$LIBOBJDIR${lc%.c}.$OBJEXT" ;;
    (*)   echo ignore $lc ;;
  esac
done

compile ()
{
  objs=
  for ofile in "$@"; do
    file=${ofile%.$OBJEXT}.c
    echo "compiling $file..."
    mkdir -p _bldobj/${file%/*}
    of=_bldobj/$ofile
    $CC $defines $DEFS $CPPFLAGS $CFLAGS -c -o "$of" \
      -Isrc -I"$top_srcdir"/src -Ilib -I"$top_srcdir"/lib "$top_srcdir/$file"
    objs="${objs:+$objs }$of"
  done
}

# Exit as soon as any command fails.
set -e

rm -rf _bldobj
mkdir _bldobj

# Build the gnulib library
compile $LIBOBJS

echo creating libgnu.a...
$AR $ARFLAGS _bldobj/lib/libgnu.a $objs

# Compile the source files into those objects.
compile %objs% src/remote-$REMOTE.$OBJEXT

# Link all the objects together.
echo linking make...
$CC $CFLAGS $LDFLAGS -L_bldobj/lib $objs -lgnu $LOADLIBES -o makenew$EXEEXT
echo done
mv -f makenew$EXEEXT make$EXEEXT