#!/usr/bin/env bash
#   Copyright (C) 1990-2014 Free Software Foundation
#
# This file 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.
# 
# This program 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/>.
#

# This script creates release packages for gdb, binutils, and other
# packages which live in src.  It used to be implemented as the src-release
# Makefile and prior to that was part of the top level Makefile, but that
# turned out to be very messy and hard to maintain.

set -e

setvar BZIPPROG = 'bzip2'
setvar GZIPPROG = 'gzip'
setvar XZPROG = 'xz'
setvar MD5PROG = 'md5sum'
setvar MAKE = 'make'
setvar CC = 'gcc'
setvar CXX = "g++"

# Default to avoid splitting info files by setting the threshold high.
setvar MAKEINFOFLAGS = "--split-size=5000000"

#
# Support for building net releases

# Files in devo used in any net release.
setvar DEVO_SUPPORT = ""README Makefile.in configure configure.ac \
	config.guess config.sub config move-if-change \
	COPYING COPYING.LIB install-sh config-ml.in symlink-tree \
	mkinstalldirs ltmain.sh missing ylwrap \
	libtool.m4 ltsugar.m4 ltversion.m4 ltoptions.m4 \
	Makefile.def Makefile.tpl src-release.sh config.rpath \
	ChangeLog MAINTAINERS README-maintainer-mode \
	lt~obsolete.m4 ltgcc.m4 depcomp mkdep compile \
	COPYING3 COPYING3.LIB""

# Files in devo/etc used in any net release.
setvar ETC_SUPPORT = ""Makefile.in configure configure.in standards.texi \
	make-stds.texi standards.info* configure.texi configure.info* \
	ChangeLog configbuild.* configdev.* fdl.texi texi2pod.pl gnu-oids.texi""

# Get the version number of a given tool
proc getver {
    setvar tool = "$1"
    if grep 'AC_INIT.*BFD_VERSION' $tool/configure.ac >/dev/null 2>&1 {
	bfd/configure --version | sed -n -e '1s,.* ,,p'
    } elif test -f $tool/common/create-version.sh {
	$tool/common/create-version.sh $tool 'dummy-host' 'dummy-target' VER.tmp
	cat VER.tmp | grep 'version\[\]' | sed 's/.*"\([^"]*\)".*/\1/' | sed 's/-cvs$//'
        rm -f VER.tmp
    } elif test -f $tool/version.in {
	head -1 $tool/version.in
    } else {
	echo VERSION
    }
}

# Setup build directory for building release tarball
proc do_proto_toplev {
    setvar package = "$1"
    setvar ver = "$2"
    setvar tool = "$3"
    setvar support_files = "$4"
    echo "==> Making $package-$ver/"
    # Take out texinfo from a few places.
    sed -e '/^all\.normal: /s/\all-texinfo //' \
	-e '/^	install-texinfo /d' \
	<Makefile.in >tmp
    mv -f tmp Makefile.in
    #
    ./configure --target=i386-pc-linux-gnu
    $MAKE configure-host configure-target \
	ALL_GCC="" ALL_GCC_C="" ALL_GCC_CXX="" \
	CC_FOR_TARGET="$CC" CXX_FOR_TARGET="$CXX"
    # Make links, and run "make diststuff" or "make info" when needed.
    rm -rf proto-toplev
    mkdir proto-toplev
    setvar dirs = ""$DEVO_SUPPORT $support_files $tool""
    for d in $dirs  {
	if test -d $d {
	    if test ! -f $d/Makefile  {
		true
	    } elif grep '^diststuff:' $d/Makefile >/dev/null  {
		shell {cd $d ; $MAKE MAKEINFOFLAGS="$MAKEINFOFLAGS" diststuff} \
		    || exit 1
	    } elif grep '^info:' $d/Makefile >/dev/null  {
		shell {cd $d ; $MAKE MAKEINFOFLAGS="$MAKEINFOFLAGS" info} \
		    || exit 1
	    }
	    if test -d $d/proto-$d.dir {
		ln -s ../$d/proto-$d.dir proto-toplev/$d
	    } else {
		ln -s ../$d proto-toplev/$d
	    }
	} else {
	    if shell {echo x$d | grep / >/dev/null} {
	      mkdir -p proto-toplev/$(dirname $d)
	      setvar x = $(dirname $d)
	      ln -s ../$(echo $x/ | sed -e 's,[^/]*/,../,g)$d proto-toplev/$d
	    } else {
	      ln -s ../$d proto-toplev/$d
	    }
	  }
	}
	shell {cd etc; $MAKE MAKEINFOFLAGS="$MAKEINFOFLAGS" info}
	$MAKE distclean
	mkdir proto-toplev/etc
	shell {cd proto-toplev/etc;
	    for i in $ETC_SUPPORT {
		ln -s ../../etc/$i .
		}}
	#
	# Take out texinfo from configurable dirs
	rm proto-toplev/configure.ac
	sed -e '/^host_tools=/s/texinfo //' \
	    <configure.ac >proto-toplev/configure.ac
	#
	mkdir proto-toplev/texinfo
	ln -s ../../texinfo/texinfo.tex	proto-toplev/texinfo/
	if test -r texinfo/util/tex3patch  {
	    mkdir proto-toplev/texinfo/util && \
		ln -s ../../../texinfo/util/tex3patch proto-toplev/texinfo/util
	} else {
	    true
	}
	chmod -R og=u . || chmod og=u $(find . -print)
	#
	# Create .gmo files from .po files.
	for f in `find . -name '*.po' -type f -print` {
	    msgfmt -o $(echo $f | sed -e 's/\.po$/.gmo/) $f
	}
	#
	rm -f $package-$ver
	ln -s proto-toplev $package-$ver
}

setvar CVS_NAMES = ''-name CVS -o -name .cvsignore''

# Add an md5sum to the built tarball
proc do_md5sum {
    echo "==> Adding md5 checksum to top-level directory"
    shell {cd proto-toplev && find * -follow '(' $CVS_NAMES ')' -prune \
	-o -type f -print \
	| xargs $MD5PROG > ../md5.new}
    rm -f proto-toplev/md5.sum
    mv md5.new proto-toplev/md5.sum
}

# Build the release tarball
proc do_tar {
    setvar package = "$1"
    setvar ver = "$2"
    echo "==> Making $package-$ver.tar"
    rm -f $package-$ver.tar
    find $package-$ver -follow '(' $CVS_NAMES ')' -prune \
	-o -type f -print \
	| tar cTfh - $package-$ver.tar
}

# Compress the output with bzip2
proc do_bz2 {
    setvar package = "$1"
    setvar ver = "$2"
    echo "==> Bzipping $package-$ver.tar.bz2"
    rm -f $package-$ver.tar.bz2
    $BZIPPROG -k -v -9 $package-$ver.tar
}

# Compress the output with gzip
proc do_gz {
    setvar package = "$1"
    setvar ver = "$2"
    echo "==> Gzipping $package-$ver.tar.gz"
    rm -f $package-$ver.tar.gz
    $GZIPPROG -k -v -9 $package-$ver.tar
}

# Compress the output with xz
proc do_xz {
    setvar package = "$1"
    setvar ver = "$2"
    echo "==> Xzipping $package-$ver.tar.xz"
    rm -f $package-$ver.tar.xz
    $XZPROG -k -v -9 $package-$ver.tar
}

# Compress the output with all selected compresion methods
proc do_compress {
    setvar package = "$1"
    setvar ver = "$2"
    setvar compressors = "$3"
    for comp in $compressors {
	case (comp) {
	    bz2 {
		do_bz2 $package $ver}
	    gz {
		do_gz $package $ver}
	    xz {
		do_xz $package $ver}
	    * {
		echo "Unknown compression method: $comp" && exit 1}
	}
    }
}

# Add djunpack.bat the tarball
proc do_djunpack {
    setvar package = "$1"
    setvar ver = "$2"
    echo "==> Adding updated djunpack.bat to top-level directory"
    echo - 's /gdb-[0-9\.]*/$package-'"$ver"'/'
    sed < djunpack.bat > djunpack.new \
	-e 's/gdb-[0-9][0-9\.]*/$package-'"$ver"'/< djunpack.bat > djunpack.new \
	-e 's/gdb-[0-9][0-9\.]*/$package-'"$ver"'/'
    rm -f proto-toplev/djunpack.bat
    mv djunpack.new proto-toplev/djunpack.bat
}

# Create a release package, tar it and compress it
proc tar_compress {
    setvar package = "$1"
    setvar tool = "$2"
    setvar support_files = "$3"
    setvar compressors = "$4"
    setvar verdir = ${5:-$tool}
    setvar ver = $(getver $verdir)
    do_proto_toplev $package $ver $tool $support_files
    do_md5sum
    do_tar $package $ver
    do_compress $package $ver $compressors
}

# Create a gdb release package, tar it and compress it
proc gdb_tar_compress {
    setvar package = "$1"
    setvar tool = "$2"
    setvar support_files = "$3"
    setvar compressors = "$4"
    setvar ver = $(getver $tool)
    do_proto_toplev $package $ver $tool $support_files
    do_md5sum
    do_djunpack $package $ver
    do_tar $package $ver
    do_compress $package $ver $compressors
}

# The FSF "binutils" release includes gprof and ld.
setvar BINUTILS_SUPPORT_DIRS = ""bfd gas include libiberty opcodes ld elfcpp gold gprof intl setup.com makefile.vms cpu zlib""
proc binutils_release {
    setvar compressors = "$1"
    setvar package = 'binutils'
    setvar tool = 'binutils'
    tar_compress $package $tool $BINUTILS_SUPPORT_DIRS $compressors
}

setvar GAS_SUPPORT_DIRS = ""bfd include libiberty opcodes intl setup.com makefile.vms zlib""
proc gas_release {
    setvar compressors = "$1"
    setvar package = 'gas'
    setvar tool = 'gas'
    tar_compress $package $tool $GAS_SUPPORT_DIRS $compressors
}

setvar GDB_SUPPORT_DIRS = ""bfd include libiberty opcodes readline sim intl libdecnumber cpu zlib""
proc gdb_release {
    setvar compressors = "$1"
    setvar package = 'gdb'
    setvar tool = 'gdb'
    gdb_tar_compress $package $tool $GDB_SUPPORT_DIRS $compressors
}

# Corresponding to the CVS "sim" module.
setvar SIM_SUPPORT_DIRS = ""bfd opcodes libiberty include intl gdb/version.in gdb/common/create-version.sh makefile.vms zlib""
proc sim_release {
    setvar compressors = "$1"
    setvar package = 'sim'
    setvar tool = 'sim'
    tar_compress $package $tool $SIM_SUPPORT_DIRS $compressors gdb
}

proc usage {
    echo "src-release.sh <options> <release>"
    echo "options:"
    echo "  -b: Compress with bzip2"
    echo "  -g: Compress with gzip"
    echo "  -x: Compress with xz"
    exit 1
}

proc build_release {
    setvar release = "$1"
    setvar compressors = "$2"
    case (release) {
	binutils {
	    binutils_release $compressors}
	gas {
	    gas_release $compressors}
	gdb {
	    gdb_release $compressors}
	sim {
	    sim_release $compressors}
	* {
	    echo "Unknown release name: $release" && usage}
    }
}

setvar compressors = """"

while getopts ":gbx" opt {
    case (opt) {
	b {
	    setvar compressors = ""$compressors bz2""}
	g {
	    setvar compressors = ""$compressors gz""}
	x {
	    setvar compressors = ""$compressors xz""}
	\? {
	    echo "Invalid option: -$OPTARG" && usage}
  }
}
shift $((OPTIND -1))
setvar release = "$1"

build_release $release $compressors