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https://git.savannah.gnu.org/git/make.git
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149 lines
4.4 KiB
Bash
Executable file
149 lines
4.4 KiB
Bash
Executable file
#!/bin/sh
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# Shell script to build GNU Make in the absence of any 'make' program.
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# Copyright (C) 1993-2022 Free Software Foundation, Inc.
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# This file is part of GNU Make.
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#
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# GNU Make is free software; you can redistribute it and/or modify it under
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# the terms of the GNU General Public License as published by the Free Software
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# Foundation; either version 3 of the License, or (at your option) any later
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# version.
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#
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# GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
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# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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# details.
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#
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# You should have received a copy of the GNU General Public License along with
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# this program. If not, see <http://www.gnu.org/licenses/>.
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# Get configure-generated values
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. ./build.cfg
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: ${OUTDIR:=.}
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OUTLIB="$OUTDIR/lib"
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# Directory to find libraries in for '-lXXX'.
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libdir=$exec_prefix/lib
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# Directory to search by default for included makefiles.
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includedir=$prefix/include
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localedir=$prefix/share/locale
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defines="-DLOCALEDIR=\"$localedir\" -DLIBDIR=\"$libdir\" -DINCLUDEDIR=\"$includedir\""
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# Look up a make variable value.
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# It can handle simple recursion where variables are separate words.
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# Print the value to stdout.
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get_mk_var ()
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{
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file=$1
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var=$2
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val=
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v=$(sed -e :a -e '/\\$/N; s/\\\n//; ta' "$file" | sed -n "s=^ *$var *\= *==p")
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for w in $v; do
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case $w in
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(\$[\(\{]*[\)\}]) w=${w#\$[\(\{]}; w=$(get_mk_var "$file" "${w%[\)\}]}") ;;
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esac
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val="${val:+$val }$w"
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done
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printf '%s\n' "$val"
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}
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# Compile source files. Object files are put into $objs.
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compile ()
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{
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objs=
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for ofile in "$@"; do
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file="${ofile%.$OBJEXT}.c"
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echo "compiling $file..."
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of="$OUTDIR/$ofile"
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mkdir -p "${of%/*}"
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$CC $cflags $CPPFLAGS $CFLAGS -c -o "$of" "$top_srcdir/$file"
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objs="${objs:+$objs }$of"
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done
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}
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# Use config.status to convert a .in file. Output file is put into $out.
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# $out will be empty if no conversion was needed.
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convert ()
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{
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out=
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base=$1
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var="GENERATE_$(echo $base | tr 'a-z./+' A-Z__X)"
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# Is this file disabled?
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grep "${var}_FALSE\"]=\"\"" config.status >/dev/null && return
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# Not disabled, so create it
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in="$top_srcdir/lib/$(echo ${base%.*}.in.${base##*.} | tr / _)"
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out="$OUTLIB/$base"
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mkdir -p "${out%/*}"
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# First perform the normal replacements, using config.status
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sed -e 's|@GUARD_PREFIX@|GL|g' \
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-e 's/@GNULIB_UNISTD_H_GETOPT@/0/g' \
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"$in" > "${out}_"
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./config.status --file "${out}__:${out}_"
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int="${out}__"
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# Then see if there any files we need to include. Unfortunately there's no
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# algorithmic conversion so we just have to hard-code it.
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incls=$(sed -n 's/.*definitions* of \(_[^ $]*\).*/\1/p' "$in")
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for inc in $incls; do
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case $inc in
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(_GL_FUNCDECL_RPL) fn=$(get_mk_var lib/Makefile CXXDEFS_H) ;;
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(_GL_ARG_NONNULL) fn=$(get_mk_var lib/Makefile ARG_NONNULL_H) ;;
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(_GL_WARN_ON_USE) fn=$(get_mk_var lib/Makefile WARN_ON_USE_H) ;;
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(_Noreturn) fn=$(get_mk_var lib/Makefile _NORETURN_H) ;;
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(*) echo "Unknown file replacement: $inc"; exit 1 ;;
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esac
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fn="$top_srcdir/lib/${fn##*/}"
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test -f "$fn" || { echo "Missing file: $fn"; exit 1; }
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sed "/definitions* of $inc/r $fn" "$int" > "${int}_"
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int=${int}_
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done
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# Done!
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mv "$int" "$out"
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}
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# Get source files provided from gnulib and convert to object files
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LIBOBJS=
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for lo in $( (get_mk_var lib/Makefile libgnu_a_OBJECTS; get_mk_var lib/Makefile libgnu_a_LIBADD) | sed "s=\$[\(\{]OBJEXT[\)\}]=$OBJEXT=g"); do
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LIBOBJS="${LIBOBJS:+$LIBOBJS }lib/$lo"
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done
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# Get object files from the Makefile
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OBJS=$(get_mk_var Makefile make_OBJECTS | sed "s=\$[\(\{]OBJEXT[\)\}]=$OBJEXT=g")
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# Exit as soon as any command fails.
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set -e
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# Generate gnulib header files that would normally be created by make
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for b in $(get_mk_var lib/Makefile BUILT_SOURCES); do
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convert $b
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done
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# Build the gnulib library
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cflags="$DEFS -I$OUTLIB -Ilib -I$top_srcdir/lib -I$OUTDIR/src -Isrc -I$top_srcdir/src"
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compile $LIBOBJS
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echo "creating libgnu.a..."
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$AR $ARFLAGS "$OUTLIB"/libgnu.a $objs
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# Compile the source files into those objects.
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cflags="$DEFS $defines -I$OUTDIR/src -Isrc -I$top_srcdir/src -I$OUTLIB -Ilib -I$top_srcdir/lib"
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compile $OBJS
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# Link all the objects together.
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echo "linking make..."
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$CC $CFLAGS $LDFLAGS -L"$OUTLIB" $objs -lgnu $LOADLIBES -o "$OUTDIR/makenew$EXEEXT"
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mv -f "$OUTDIR/makenew$EXEEXT" "$OUTDIR/make$EXEEXT"
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echo done.
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