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source: trunk/debbuild@ 103

Last change on this file since 103 was 103, checked in by kdeugau, 17 years ago

/trunk

Major rewrite of parse_spec(); it should now handle %if constructs in
any location in the spec file. The code is somewhat more spread out
now as well.

Property svn:executable set to *
Property svn:keywords set to Date Rev Author

File size: 52.3 KB

Rev	Line
[93]	1	#!/usr/bin/perl -w
[2]	2	# debbuild script
[86]	3	# Shamelessly steals interface from rpm's "rpmbuild" to create
[2]	4	# Debian packages. Please note that such packages are highly
	5	# unlikely to conform to "Debian Policy".
	6	###
	7	# SVN revision info
	8	# $Date: 2007-06-08 20:57:49 +0000 (Fri, 08 Jun 2007) $
	9	# SVN revision $Rev: 103 $
	10	# Last update by $Author: kdeugau $
	11	###
[86]	12	# Copyright 2005-2007 Kris Deugau <kdeugau@deepnet.cx>
[56]	13	#
	14	# This program is free software; you can redistribute it and/or modify
	15	# it under the terms of the GNU General Public License as published by
	16	# the Free Software Foundation; either version 2 of the License, or
	17	# (at your option) any later version.
	18	#
	19	# This program is distributed in the hope that it will be useful,
	20	# but WITHOUT ANY WARRANTY; without even the implied warranty of
	21	# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	22	# GNU General Public License for more details.
	23	#
	24	# You should have received a copy of the GNU General Public License
	25	# along with this program; if not, write to the Free Software
	26	# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
[2]	27
[5]	28	use strict;
[6]	29	use warnings;
[7]	30	use Fcntl; # for sysopen flags
[36]	31	use Cwd 'abs_path'; # for finding where files really are
[5]	32
[10]	33	# regex debugger
	34	#use re "debug";
	35
[3]	36	# Program flow:
	37	# -> Parse/execute "system" config/macros (if any - should be rare)
	38	# -> Parse/execute "user" config/macros (if any - my requirement is %_topdir)
	39	# -> Parse command line for options, spec file/tarball/.src.deb (NB - also accept .src.rpm)
	40
[30]	41	sub expandmacros;
	42
[2]	43	# User's prefs for dirs, environment, etc,etc,etc.
	44	# config file ~/.debmacros
	45	# Default ordered search paths for config/macros:
	46	# /usr/lib/rpm/rpmrc /usr/lib/rpm/redhat/rpmrc /etc/rpmrc ~/.rpmrc
	47	# /usr/lib/rpm/macros /usr/lib/rpm/redhat/macros /etc/rpm/macros ~/.rpmmacros
	48	# **NOTE: May be possible to (ab)use bits of debhelper
	49
	50	# Build tree
	51	# default is /usr/src/debian/{BUILD,SOURCES,SPECS,DEBS,SDEBS}
	52
[3]	53	# Globals
[77]	54	my $finalmessages = ''; # A place to stuff messages that I want printed at the very end of any processing.
[3]	55	my $specfile;
	56	my $tarball;
	57	my $srcpkg;
[7]	58	my $cmdbuildroot;
[95]	59	my $tarballdir = '%{name}-%{version}'; # We do this in case of a spec file not using %setup...
[23]	60	my %specglobals; # For %define's in specfile, among other things.
[6]	61
[98]	62	$specglobals{'_vendor'} = 'debbuild';
	63
[6]	64	# Initialized globals
[3]	65	my $verbosity = 0;
[4]	66	my %cmdopts = (type => '',
	67	stage => 'a',
	68	short => 'n'
	69	);
[6]	70	my $topdir = "/usr/src/debian";
[13]	71	my $buildroot = "%{_tmppath}/%{name}-%{version}-%{release}.root".int(rand(99998)+1);
[6]	72
	73	# "Constants"
[4]	74	my %targets = ('p' => 'Prep',
	75	'c' => 'Compile',
	76	'i' => 'Install',
	77	'l' => 'Verify %files',
	78	'a' => 'Build binary and source',
	79	'b' => 'Build binary',
	80	's' => 'Build source'
	81	);
[87]	82	# Ah, the joys of multiple architectures. :( Feh.
	83	# As copied from rpm
	84	my %optflags = ( 'i386' => '-O2 -g -march=i386 -mcpu=i686',
	85	'amd64' => '-O2 -g'
	86	);
	87	my $hostarch; # we set this later...
[6]	88	my $scriptletbase =
	89	q(#!/bin/sh
[3]	90
[6]	91	RPM_SOURCE_DIR="%{_topdir}/SOURCES"
	92	RPM_BUILD_DIR="%{_topdir}/BUILD"
[87]	93	RPM_OPT_FLAGS="%{optflags}"
	94	RPM_ARCH="%{_arch}"
[6]	95	RPM_OS="linux"
	96	export RPM_SOURCE_DIR RPM_BUILD_DIR RPM_OPT_FLAGS RPM_ARCH RPM_OS
	97	RPM_DOC_DIR="/usr/share/doc"
	98	export RPM_DOC_DIR
	99	RPM_PACKAGE_NAME="%{name}"
	100	RPM_PACKAGE_VERSION="%{version}"
	101	RPM_PACKAGE_RELEASE="%{release}"
	102	export RPM_PACKAGE_NAME RPM_PACKAGE_VERSION RPM_PACKAGE_RELEASE
	103	RPM_BUILD_ROOT="%{buildroot}"
	104	export RPM_BUILD_ROOT
[10]	105	);
	106	foreach (`dpkg-architecture`) {
	107	s/=(.+)/="$1"/;
	108	$scriptletbase .= " $_";
[90]	109	($hostarch) = (/^DEB_HOST_ARCH="(.+)"$/) if /DEB_HOST_ARCH=/;
[10]	110	}
	111	$scriptletbase .=
	112	q(
[6]	113	set -x
	114	umask 022
	115	cd %{_topdir}/BUILD
	116	);
	117
[102]	118	# Hackery to try to bring some semblance of sanity to packages built for more
	119	# than one Debian version at the same time. Whee.
	120	# /etc/debian-version
	121	my %distmap = (
	122	"3.1.9ubuntu7.1" => "dapper",
	123	"4ubuntu2" => "feisty",
	124	"3.0" => "woody",
	125	"3.1" => "sarge",
	126	"4" => "etch",
	127	"4.0" => "lenny",
	128	"4.0.0" => "sid");
	129	# Enh. There doesn't seem to be any better way to do this... :(
	130	{
	131	my $basever = qx { dpkg-query --showformat '\${version}' -W base-files };
	132	if ($basever =~ /^\d\.\d\.(\d)$/) {
	133	$basever =~ s/\.\d$// if $1 ne '0';
	134	}
	135	# want to do something with this... erm, what was I going to do? O_o
	136	my $releasever = qx { cat /etc/debian_version };
	137	chomp $releasever;
	138
	139	$specglobals{"debdist"} = $distmap{$basever};
	140	$specglobals{"debver"} = $basever; # this may have trouble with Ubuntu versions?
	141	}
	142
[5]	143	# Package data
	144	# This is the form of $pkgdata{pkgname}{meta}
	145	# meta includes Summary, Name, Version, Release, Group, Copyright,
[38]	146	# Source, URL, Packager, BuildRoot, Description, BuildReq(uires),
	147	# Requires, Provides
[6]	148	# 10/31/2005 Maybe this should be flatter? -kgd
[5]	149	my %pkgdata;
[27]	150	my @pkglist = ('main'); #sigh
[23]	151	# Files listing. Embedding this in %pkgdata would be, um, messy.
	152	my %filelist;
[40]	153	my $buildreq = '';
[5]	154
[6]	155	# Scriptlets
[48]	156	my $prepscript = '';
	157	my $buildscript = '';
[23]	158	# %install doesn't need the full treatment from %clean; just an empty place to install to.
	159	# NB - rpm doesn't do this; is it really necessary?
	160	my $installscript = '[ "$RPM_BUILD_ROOT" != "/" ] && rm -rf $RPM_BUILD_ROOT'."\n";
[48]	161	my $cleanscript = '';
[6]	162
[5]	163	die "Not enough arguments\n" if #$argv == 0;
	164
[13]	165	# Snag some environment data
	166	my $tmpdir;
	167	if (defined $ENV{TMP} && $ENV{TMP} =~ /^(\/var)?\/tmp$/) {
	168	$tmpdir = $ENV{TMP};
	169	} else {
	170	$tmpdir = "/var/tmp";
	171	}
	172
[7]	173	##main
	174
[4]	175	load_userconfig();
[3]	176	parse_cmd();
	177
[50]	178	if ($cmdopts{install}) {
	179	install_sdeb();
	180	exit 0;
	181	}
	182
[81]	183	# output stage of --showpkgs
[71]	184	if ($cmdopts{type} eq 'd') {
	185	parse_spec();
	186	foreach my $pkg (@pkglist) {
	187	$pkgdata{$pkg}{name} =~ tr/_/-/;
	188
[87]	189	my $pkgfullname = "$pkgdata{$pkg}{name}_$pkgdata{$pkg}{version}-$pkgdata{main}{release}_$pkgdata{$pkg}{arch}.deb";
[71]	190
[76]	191	print "$pkgfullname\n" if $filelist{$pkg};
[79]	192
[71]	193	}
[80]	194	# Source package
[85]	195	print "$pkgdata{main}{name}-$pkgdata{main}{version}-$pkgdata{main}{release}.sdeb\n";
[71]	196	exit 0;
	197	}
	198
[50]	199	# Stick --rebuild handling in here - basically install_sdeb()
	200	# followed by tweaking options to run with -ba
[54]	201	if ($cmdopts{type} eq 's') {
[55]	202	if ($srcpkg =~ /\.src\.rpm$/) {
[58]	203	my @srclist = qx { rpm -qlp $srcpkg };
[55]	204	foreach (@srclist) {
[54]	205	chomp;
[55]	206	$specfile = "$topdir/SPECS/$_" if /\.spec$/;
[54]	207	}
[55]	208	qx { rpm -i $srcpkg };
	209	} else {
	210	install_sdeb();
	211	my @srclist = qx { pax < $srcpkg };
	212	foreach (@srclist) {
	213	chomp;
	214	$specfile = "$topdir/$_" if /SPECS/;
	215	}
[54]	216	}
[55]	217	$cmdopts{type} = 'b';
	218	$cmdopts{stage} = 'a';
[54]	219	}
[50]	220
[7]	221	if ($cmdopts{type} eq 'b') {
	222	# Need to read the spec file to find the tarball. Note that
	223	# this also generates most of the shell script required.
	224	parse_spec();
[38]	225	die "Can't build $pkgdata{main}{name}: build requirements not met.\n"
	226	if !checkbuildreq();
[7]	227	}
	228
[65]	229	if ($cmdopts{type} eq 't') {
	230	# Need to unpack the tarball to find the spec file. Sort of the inverse of -b above.
	231	# zcat $tarball \|tar -t \|grep .spec
	232	# collect some info about the tarball
[99]	233	$specfile = "$topdir/BUILD/". qx { zcat $tarball \|tar -t \|grep -e '[\.]spec\$' };
[65]	234	chomp $specfile;
	235	my ($fileonly, $dirname) = ($tarball =~ /(([a-zA-Z0-9._-]+)\.tar\.(?:gz\|bz2))$/);
	236
	237	$tarball = abs_path($tarball);
	238	my $unpackcmd = "cd $topdir/BUILD; tar -".
	239	( $tarball =~ /\.tar\.gz$/ ? "z" : "" ).
	240	( $tarball =~ /\.tar\.bz2$/ ? "j" : "" ). "xf $tarball";
	241	system "$unpackcmd";
	242	system "cp $tarball $topdir/SOURCES/$fileonly";
	243	system "cp $specfile $topdir/SPECS/";
	244	parse_spec();
	245	die "Can't build $pkgdata{main}{name}: build requirements not met.\n"
	246	if !checkbuildreq();
	247	}
	248
[35]	249	# -> srcpkg if -.s
	250	if ($cmdopts{stage} eq 's') {
	251	srcpackage();
	252	exit 0;
	253	}
	254
[4]	255	# Hokay. Need to:
[14]	256	# -> prep if -.p OR (-.[cilabs] AND !--short-circuit)
[7]	257	if ($cmdopts{stage} eq 'p' \|\| ($cmdopts{stage} =~ /[cilabs]/ && $cmdopts{short} ne 'y')) {
	258	prep();
	259	}
[14]	260	# -> build if -.c OR (-.[ilabs] AND !--short-circuit)
[7]	261	if ($cmdopts{stage} eq 'c' \|\| ($cmdopts{stage} =~ /[ilabs]/ && $cmdopts{short} ne 'y')) {
	262	build();
	263	}
[14]	264	# -> install if -.[ilabs]
[28]	265	#if ($cmdopts{stage} eq 'i' \|\| ($cmdopts{stage} =~ /[labs]/ && $cmdopts{short} ne 'y')) {
	266	if ($cmdopts{stage} =~ /[ilabs]/) {
[7]	267	install();
[30]	268	#foreach my $pkg (@pkglist) {
	269	# print "files in $pkg:\n ".$filelist{$pkg}."\n";
	270	#}
	271
[7]	272	}
[14]	273	# -> binpkg and srcpkg if -.a
[7]	274	if ($cmdopts{stage} eq 'a') {
[4]	275	binpackage();
[7]	276	srcpackage();
[97]	277	clean();
[4]	278	}
[14]	279	# -> binpkg if -.b
[7]	280	if ($cmdopts{stage} eq 'b') {
	281	binpackage();
[97]	282	clean();
[7]	283	}
[4]	284
[77]	285	# Spit out any closing remarks
	286	print $finalmessages;
	287
[4]	288	# Just in case.
	289	exit 0;
	290
	291
	292	## load_userconfig()
	293	# Loads user configuration (if any)
	294	# Currently only handles .debmacros
	295	# Needs to handle "other files"
	296	sub load_userconfig {
[96]	297	my $homedir = (getpwuid($<))[7];
[4]	298	if (-e "$homedir/.debmacros") {
	299	open USERMACROS,"<$homedir/.debmacros";
	300	while (<USERMACROS>) {
[7]	301	# And we also only handle a few macros at the moment.
[4]	302	if (/^\%_topdir/) {
[5]	303	my (undef,$tmp) = split /\s+/, $_;
	304	$topdir = $tmp;
[4]	305	}
[96]	306	next if /^\%_/;
	307	# Allow arbitrary definitions. Note that we're only doing simple defs here for now.
	308	if (/^\%([a-z0-9]+)\s+(.+)$/) {
	309	$specglobals{$1} = $2;
	310	}
[4]	311	}
	312	}
	313	} # end load_userconfig()
	314
	315
[3]	316	## parse_cmd()
[4]	317	# Parses command line into global hash %cmdopts, other globals
[3]	318	# Options based on rpmbuild's options
	319	sub parse_cmd {
	320	# Don't feel like coding my own option parser...
	321	#use Getopt::Long;
	322	# ... but I may have to: (OTOH, rpm uses popt, so maybe we can too.)
	323	#use Getopt::Popt qw(:all);
[4]	324	# Or not. >:( Stupid Debian lack of findable Perl module names in packages.
[3]	325
	326	# Stuff it.
[4]	327	my $prevopt = '';
[3]	328	foreach (@ARGV) {
	329	chomp;
[7]	330
[3]	331	# Is it an option?
	332	if (/^-/) {
[7]	333
[3]	334	# Is it a long option?
	335	if (/^--/) {
[4]	336	if (/^--short-circuit/) {
	337	$cmdopts{short} = 'y';
[5]	338	} elsif (/^--rebuild/) {
	339	$cmdopts{type} = 's';
[71]	340	} elsif (/^--showpkgs/) {
	341	$cmdopts{type} = 'd'; # d for 'diagnostic' or 'debug' or 'dump'
[94]	342	} elsif (/^--define/) {
	343	# nothing to do? Can't see anything needed, we handle the actual definition later.
[4]	344	} else {
[93]	345	print "Long option $_ not handled\n";
[4]	346	}
[3]	347	} else {
[14]	348	# Not a long option
[5]	349	if (/^-[bt]/) {
	350	if ($cmdopts{stage} eq 's') {
	351	# Mutually exclusive options.
	352	die "Can't use $_ with --rebuild\n";
	353	} else {
[14]	354	# Capture the type (from "bare" files or tarball) and the stage (prep, build, etc)
[5]	355	($cmdopts{stage}) = (/^-[bt]([pcilabs])/);
	356	($cmdopts{type}) = (/^-([bt])[pcilabs]/);
	357	}
[4]	358	} elsif (/^-v/) {
	359	# bump verbosity. Not sure what I'll actually do here...
[50]	360	} elsif (/^-i/) {
	361	$cmdopts{install} = 1;
	362	$prevopt = '-i';
[4]	363	} else {
	364	die "Bad option $_\n";
	365	}
[3]	366	}
[14]	367
	368	} else { # Not an option argument
	369
[5]	370	# --buildroot is the only option that takes an argument
	371	# Therefore, any other bare arguments are the spec file,
	372	# tarball, or source package we're operating on - depending
	373	# on which one we meet.
	374	if ($prevopt eq '--buildroot') {
[7]	375	$cmdbuildroot = $_;
[94]	376	} elsif ($prevopt eq '--define') {
	377	my ($macro,$value) = (/([a-z0-9_.-]+)(?:\s+(.+))?/);
	378	if ($value) {
	379	$specglobals{$macro} = $value;
	380	} else {
	381	warn "WARNING: missing value for macro $macro in --define! Ignoring.\n";
	382	}
[50]	383	} elsif ($prevopt eq '-i') {
	384	$srcpkg = $_;
[5]	385	} else {
	386	if ($cmdopts{type} eq 's') {
	387	# Source package
[50]	388	if (!/(sdeb\|\.src\.rpm)$/) {
[5]	389	die "Can't --rebuild with $_\n";
	390	}
[50]	391	$srcpkg = $_;
[71]	392	} elsif ($cmdopts{type} eq 'b' \|\| $cmdopts{type} eq 'd') {
[65]	393	# Spec file
[5]	394	$specfile = $_;
	395	} else {
[65]	396	# Tarball build. Need to extract tarball to find spec file. Whee.
	397	$tarball = $_;
[5]	398	}
	399	}
[3]	400	}
[7]	401	$prevopt = $_;
	402	} # foreach @ARGV
[4]	403
	404	# Some cross-checks. rpmbuild limits --short-circuit to just
	405	# the "compile" and "install" targets - with good reason IMO.
[14]	406	# Note that --short-circuit with -.p is not really an error, just redundant.
[4]	407	# NB - this is NOT fatal, just ignored!
[10]	408	if ($cmdopts{short} eq 'y' && $cmdopts{stage} =~ /[labs]/) {
[4]	409	warn "Can't use --short-circuit for $targets{$cmdopts{stage}} stage. Ignoring.\n";
[28]	410	$cmdopts{short} = 'n';
[4]	411	}
[14]	412
[3]	413	# Valid options, with example arguments (if any):
	414	# Build from .spec file; mutually exclusive:
	415	# -bp
	416	# -bc
	417	# -bi
	418	# -bl
	419	# -ba
	420	# -bb
	421	# -bs
	422	# Build from tarball; mutually exclusive:
	423	# -tp
	424	# -tc
	425	# -ti
	426	# -ta
	427	# -tb
	428	# -ts
	429	# Build from .src.(deb\|rpm)
	430	# --rebuild
	431	# --recompile
	432
	433	# General options
	434	# --buildroot=DIRECTORY
	435	# --clean
	436	# --nobuild
	437	# --nodeps
	438	# --nodirtokens
	439	# --rmsource
	440	# --rmspec
	441	# --short-circuit
	442	# --target=CPU-VENDOR-OS
	443
	444	#my $popt = new Getopt::Popt(argv => \@ARGV, options => \@optionsTable);
	445
	446	} # end parse_cmd()
	447
[4]	448
[5]	449	## parse_spec()
[14]	450	# Parse the .spec file.
[5]	451	sub parse_spec {
[65]	452	open SPECFILE,"<$specfile" or die "specfile ($specfile) barfed: $!";
[5]	453
[95]	454	my $iflevel = 0;
[87]	455	my $buildarch = $hostarch;
[88]	456	$pkgdata{main}{arch} = $hostarch;
[87]	457
[103]	458	my $stage = 'preamble';
	459	my $subname = 'main';
	460	my $scriptlet;
[14]	461
[103]	462	# Basic algorithm:
	463	# For each line
	464	# if it's a member of an %if construct, branch and see which segment of the
	465	# spec file we need to parse and which one gets discarded, then
	466	# short-circuit back to the top of the loop.
	467	# if it's a %section, bump the stage. Preparse addons to the %section line
	468	# (eg subpackage) and stuff them in suitable loop-global variables, then
	469	# short-circuit back to the top of the loop.
	470	# Otherwise, parse the line according to which section we're supposedly
	471	# parsing right now
[14]	472
[103]	473	LINE: while (<SPECFILE>) {
	474	next if /^#/; # Ignore comments...
	475	next if /^\s*$/; # ... and blank lines.
[23]	476
[103]	477	# preprocess %define's
	478	if (my ($key, $def) = (/^\%define\s+([^\s]+)\s+(.+)$/) ) {
	479	$specglobals{$key} = expandmacros($def,'g');
	480	}
[98]	481
[103]	482	if (/^\%if/) {
	483	s/^\%if//;
	484	chomp;
	485	my $expr = expandmacros($_, 'g');
	486	$iflevel++;
[98]	487
[103]	488	if ($expr !~ /^\s\d+\s$/) {
	489	# gots a logic statement we want to turn into a 1 or a 0. most likely by eval'ing it.
[98]	490
[103]	491	$expr =~ s/\s+//g;
	492	$expr =~ s/^(\w+)/"$1"/ if $expr !~ /^['"]\w['"]/;
	493	$expr =~ s/(\w+)$/"$1"/ if $expr !~ /['"]\w['"]$/;
[98]	494
[103]	495	# Done in this order so we don't cascade incorrectly. Yes, those spaces ARE correct in the replacements!
	496	$expr =~ s/==/ eq /;
	497	$expr =~ s/!=/ ne /;
	498	$expr =~ s/<=>/ cmp /;
	499	$expr =~ s/<=/ le /;
	500	$expr =~ s/>=/ ge /;
	501	$expr =~ s/</ lt /;
	502	$expr =~ s/>/ gt /;
[98]	503
[103]	504	# Turn it into something that eval's to a number. Maybe not needed? O_o
	505	#$expr = "( $expr ? 1 : 0 )";
[98]	506
[103]	507	$expr = eval $expr;
[95]	508	}
[103]	509
	510	next LINE if $expr != 0; # This appears to be the only case we call false.
	511	while (<SPECFILE>) {
	512	if (/^\%endif/) {
	513	$iflevel--;
	514	next LINE;
	515	} elsif (/^\%else/) {
	516	next LINE;
	517	}
[95]	518	}
[103]	519	}
	520	if (/^\%else/) {
	521	while (<SPECFILE>) {
	522	if (/^\%endif/) {
	523	$iflevel--;
	524	next LINE;
	525	}
[95]	526	}
[103]	527	}
	528	if (/^\%endif/) {
	529	$iflevel--;
	530	next LINE;
	531	} # %if/%else/%endif
[95]	532
[103]	533	# description. not going to parse for %ifs in it.
	534	if (/^\%description(?:\s+(?:-n\s+)?(.+))?/) {
	535	$subname = "main";
	536	if ($1) { # Magic to add entries to the right package
	537	my $tmp = expandmacros("$1", 'g');
	538	if (/-n/) { $subname = $tmp; } else { $subname = "$pkgdata{main}{name}-$tmp"; }
[18]	539	}
[103]	540	while (<SPECFILE>) {
	541	next if /^#/; # Messy. Should be possible to do better. :/
	542	redo LINE if /^\%[a-z]/;
	543	$pkgdata{$subname}{desc} .= " $_";
	544	}
	545	} # %description
	546
	547	# now we pick out the sections and set "state" to parse that section. Fugly but I can't see a better way. >:(
	548
	549	if (/^\%package\s+(?:-n\s+)?(.+)/) {
	550	$stage = 'package';
	551	if ($1) { # Magic to add entries to the right package
	552	my $tmp = expandmacros("$1", 'g');
	553	if (/-n/) { $subname = $tmp; } else { $subname = "$pkgdata{main}{name}-$tmp"; }
	554	}
	555	push @pkglist, $subname;
	556	$pkgdata{$subname}{name} = $subname;
	557	$pkgdata{$subname}{version} = $pkgdata{main}{version};
[87]	558	# Build "same arch as previous package found" by default. Where rpm just picks the
	559	# very last one, we want to allow arch<native>+arch-all
	560	# (eg, Apache is i386, but apache-manual is all)
[103]	561	$pkgdata{$subname}{arch} = $buildarch; # Since it's likely subpackages will NOT have a BuildArch line...
	562	next LINE;
	563	} # %package
	564
	565	if (/^\%prep/) {
	566	$stage = 'prep';
	567	# This really should be local-ish, but we need just the filename for the source
	568	$pkgdata{main}{source} =~ s\|.+/([^/]+)$\|$1\|;
	569	# Replace some core macros
	570	$pkgdata{main}{source} = expandmacros($pkgdata{main}{source},'gp');
	571	next LINE;
	572	} # %prep
	573
	574	if (/^\%build/) {
	575	$stage = 'build';
	576	$buildscript .= "cd $tarballdir\n";
	577	next LINE;
	578	} # %build
	579
	580	if (/^\%install/) {
	581	$stage = 'install';
	582	$installscript .= "cd $tarballdir\n";
	583	next LINE;
	584	} # %install
	585
	586	if (/^\%clean/) {
	587	$stage = 'clean';
	588	$cleanscript .= "cd $tarballdir\n";
	589	next LINE;
	590	} # %clean
	591
	592	if (/^\%(pre\|post\|preun\|postun)\b(?:\s+(?:-n\s+)?(.+))?/i) {
	593	$stage = 'prepost';
	594	$scriptlet = lc $1;
	595	$subname = 'main';
	596	if ($2) { # Magic to add entries to the right package
	597	my $tmp = expandmacros("$2", 'g');
	598	if (/-n/) { $subname = $tmp; } else { $subname = "$pkgdata{main}{name}-$tmp"; }
[27]	599	}
[103]	600	next LINE;
	601	} # %pre/%post/%preun/%postun
[8]	602
[103]	603	if (/^\%files(?:\s+(?:-n\s+)?(.+))?/) {
	604	$stage = 'files';
	605	$subname = 'main';
	606	if ($1) { # Magic to add entries to the right list of files
	607	my $tmp = expandmacros("$1", 'g');
	608	if (/-n/) { $subname = $tmp; } else { $subname = "$pkgdata{main}{name}-$tmp"; }
	609	}
	610	next LINE;
	611	} # %files
[6]	612
[103]	613	if (/^\%changelog/) {
	614	$stage = 'changelog';
	615	$pkgdata{main}{changelog} = '';
	616	next LINE;
	617	}
[6]	618
[103]	619	# now we handle individual lines from the various sections
[6]	620
[103]	621	if ($stage eq 'package') {
	622	# gotta expand %defines here. Whee.
	623	if (my ($dname,$dvalue) = (/^(Summary\|Group\|Version\|Requires\|Provides\|BuildArch(?:itecture)?):\s+(.+)$/i)) {
	624	$dname =~ tr/[A-Z]/[a-z]/;
	625	if ($dname =~ /^BuildArch/i) {
	626	$dvalue =~ s/^noarch/all/ig;
	627	$buildarch = $dvalue; # Emulate rpm's behaviour to a degree
	628	$dname = 'arch';
	629	}
	630	$pkgdata{$subname}{$dname} = expandmacros($dvalue, 'gp');
	631	}
	632	} # package
	633
	634	if ($stage eq 'prep') {
	635	# Actual handling for %prep section. May have %setup macro; may
	636	# include %patch tags, may be just a bare shell script.
	637	if (/^\%setup/) {
	638	# Parse out the %setup macro. Note that we aren't supporting
	639	# many of RPM's %setup features.
	640	$prepscript .= "cd $topdir/BUILD\n";
	641	if ( /\s+-n\s+([^\s]+)\s+/ ) {
	642	$tarballdir = $1;
	643	}
	644	$tarballdir = expandmacros($tarballdir,'gp');
	645	$prepscript .= "rm -rf $tarballdir\n";
	646	if (/\s+-c\s+/) {
	647	$prepscript .= "mkdir $tarballdir\ncd $tarballdir\n";
	648	}
	649	$prepscript .= "tar -".
[6]	650	( $pkgdata{main}{source} =~ /\.tar\.gz$/ ? "z" : "" ).
	651	( $pkgdata{main}{source} =~ /\.tar\.bz2$/ ? "j" : "" ).
[21]	652	( /\s+-q\s+/ ? '' : 'vv' )."xf ".
	653	"$topdir/SOURCES/$pkgdata{main}{source}\n".
[6]	654	qq(STATUS=\$?\nif [ \$STATUS -ne 0 ]; then\n exit \$STATUS\nfi\n).
[69]	655	"cd $topdir/BUILD/$tarballdir\n".
[6]	656	qq([ `/usr/bin/id -u` = '0' ] && /bin/chown -Rhf root .\n).
	657	qq([ `/usr/bin/id -u` = '0' ] && /bin/chgrp -Rhf root .\n).
	658	qq(/bin/chmod -Rf a+rX,g-w,o-w .\n);
[103]	659	} elsif ( my ($patchnum,$patchopts) = (/^\%patch([^\s]+)(\s+.+)?$/) ) {
	660	chomp $patchnum;
	661	$prepscript .= qq(echo "Patch #$patchnum ($pkgdata{main}{"patch$patchnum"}):"\n).
[70]	662	"patch ";
[103]	663	# If there are options passed, use'em.
	664	# Otherwise, catch a bare %patch and ASS-U-ME it's '-p0'-able.
	665	# Will break on options that don't provide -pnn, but what the hell.
	666	$prepscript .= $patchopts if $patchopts;
	667	$prepscript .= "-p0" if !$patchopts;
	668	$prepscript .= " -s <$topdir/SOURCES/".$pkgdata{main}{"patch$patchnum"}."\n";
	669	} else {
	670	$prepscript .= $_;
[6]	671	}
[103]	672	next LINE;
	673	} # prep
	674
	675	if ($stage eq 'build') {
	676	# %build. This is pretty much just a shell script. There
	677	# aren't many local macros to deal with.
	678	if (/^\%configure/) {
	679	$buildscript .= expandmacros($_,'cgbp');
	680	} elsif (/^\%\{__make\}/) {
	681	$buildscript .= expandmacros($_,'mgbp');
	682	} else {
	683	$buildscript .= $_;
[5]	684	}
[103]	685	next LINE;
	686	} # build
[29]	687
[103]	688	if ($stage eq 'install') {
	689	if (/^\%makeinstall/) {
	690	$installscript .= expandmacros($_,'igbp');
	691	} else {
	692	$installscript .= $_;
[6]	693	}
[103]	694	next LINE;
	695	} # install
[29]	696
[103]	697	if ($stage eq 'clean') {
	698	$cleanscript .= $_;
	699	next LINE;
	700	} # clean
[37]	701
[103]	702	if ($stage eq 'prepost') {
	703	$pkgdata{$subname}{$scriptlet} .= $_;
	704	next LINE;
	705	} # prepost
[37]	706
[103]	707	if ($stage eq 'files') {
	708	# need to update this to deal (properly) with %dir, %attr, etc
	709	next LINE if /^\%dir/;
	710	next LINE if /^\%defattr/;
	711	# Debian dpkg doesn't speak "%docdir". Meh.
	712	next LINE if /^\%docdir/;
[76]	713	##fixme
	714	# Note that big chunks of this section don't match rpm's behaviour; among other things,
	715	# rpm accepts more than one %-directive on one line for a file or set of files.
[103]	716	# make sure files get suitable permissions and so on
	717	if (/^\%attr/) {
	718	# We're going to collapse whitespace before processing. PTHBT.
	719	# While this breaks pathnames with spaces, anyone expecting command-line
	720	# tools with spaces to work (never mind work properly or well) under
	721	# any *nix has their head so far up their ass they can see out their mouth.
	722	my ($args,$filelist) = split /\)/;
	723	$filelist{$subname} .= " $filelist";
	724	$args =~ s/\s+//g;
	725	$args =~ s/"//g; # don't think quotes are ever necessary, but they're allowed
	726	my ($perms,$owner,$group) = ($args =~ /\(([\d-]+),([a-zA-Z0-9-]+),([a-zA-Z0-9-]+)/);
[76]	727	# due to Debian's total lack of real permissions-processing in its actual package
	728	# handling component (dpkg-deb), this can't really be done "properly". We'll have
	729	# to add chown/chmod commands to the postinst instead. Feh.
[103]	730	$pkgdata{$subname}{'post'} .= "chown $owner $filelist\n" if $owner ne '-';
	731	$pkgdata{$subname}{'post'} .= "chgrp $group $filelist\n" if $group ne '-';
	732	$pkgdata{$subname}{'post'} .= "chmod $perms $filelist\n" if $perms ne '-';
	733	next LINE;
[18]	734	}
[103]	735	# %doc needs extra processing, because it can be a space-separated list.
	736	if (/^\%doc/) {
	737	s/^\%doc\s+//;
	738	foreach (split()) {
	739	$filelist{$subname} .= " %{_docdir}/$_";
	740	}
	741	next LINE;
	742	}
	743	# Conffiles. Note that Debian and RH have similar, but not
	744	# quite identical ideas of what constitutes a conffile. Nrgh.
	745	if (/^\%config\s+(.+)$/) {
	746	$pkgdata{$subname}{conffiles} = 1; # Flag it for later
	747	my $tmp = $1; # Now we can mangleificationate it. And we probably need to. :/
	748	$tmp = expandmacros($tmp, 'gp'); # Expand common macros
	749	if ($tmp !~ /\s+/) {
	750	# Simplest case, just a file. Whew.
	751	push @{$pkgdata{$subname}{conflist}}, $tmp;
	752	$filelist{$subname} .= " $tmp";
	753	} else {
	754	# Wot? Spaces? That means extra %-macros. Which, for the most part, can be ignored.
	755	($tmp) = ($tmp =~ /.+\s([^\s]+)/); # Strip everything before the last space
	756	push @{$pkgdata{$subname}{conflist}}, $tmp;
	757	$filelist{$subname} .= " $tmp";
	758	}
	759	next LINE;
	760	}
	761	# ... and finally everything else
	762	$filelist{$subname} .= " $_";
	763	next LINE;
	764	} # files
[14]	765
[103]	766	if ($stage eq 'changelog') {
	767	$pkgdata{main}{changelog} .= $_;
	768	}
[14]	769
[103]	770	if ($stage eq 'preamble') {
[5]	771	if (/^summary:\s+(.+)/i) {
[103]	772	$pkgdata{main}{summary} = $1;
[5]	773	} elsif (/^name:\s+(.+)/i) {
[103]	774	$pkgdata{main}{name} = expandmacros($1,'g');
[5]	775	} elsif (/^version:\s+(.+)/i) {
[103]	776	$pkgdata{main}{version} = expandmacros($1,'g');
[5]	777	} elsif (/^release:\s+(.+)/i) {
[103]	778	$pkgdata{main}{release} = expandmacros($1,'g');
[5]	779	} elsif (/^group:\s+(.+)/i) {
[103]	780	$pkgdata{main}{group} = $1;
[5]	781	} elsif (/^copyright:\s+(.+)/i) {
[103]	782	$pkgdata{main}{copyright} = $1;
[5]	783	} elsif (/^url:\s+(.+)/i) {
[103]	784	$pkgdata{main}{url} = $1;
[5]	785	} elsif (/^packager:\s+(.+)/i) {
[103]	786	$pkgdata{main}{packager} = $1;
[7]	787	} elsif (/^buildroot:\s+(.+)/i) {
[103]	788	$buildroot = $1;
[59]	789	} elsif (/^source0?:\s+(.+)/i) {
[103]	790	$pkgdata{main}{source} = $1;
	791	die "Unknown tarball format $1\n" if $1 !~ /\.tar\.(?:gz\|bz2)$/;
[15]	792	} elsif (/^source([0-9]+):\s+(.+)/i) {
[103]	793	$pkgdata{sources}{$1} = $2;
[10]	794	} elsif (/^patch([^:]+):\s+(.+)$/i) {
[103]	795	my $patchname = "patch$1";
	796	$pkgdata{main}{$patchname} = $2;
	797	if ($pkgdata{main}{$patchname} =~ /\//) {
	798	# URL-style patch. Rare but not unheard-of.
	799	my @patchbits = split '/', $pkgdata{main}{$patchname};
	800	$pkgdata{main}{$patchname} = $patchbits[$#patchbits];
	801	}
	802	chomp $pkgdata{main}{$patchname};
[87]	803	} elsif (/^buildarch(?:itecture)?:\s+(.+)/i) {
[103]	804	$pkgdata{main}{arch} = $1;
	805	$pkgdata{main}{arch} =~ s/^noarch$/all/;
	806	$buildarch = $pkgdata{main}{arch};
[38]	807	} elsif (/^buildreq(?:uires)?:\s+(.+)/i) {
[103]	808	$buildreq .= ", $1";
[38]	809	} elsif (/^requires:\s+(.+)/i) {
[103]	810	$pkgdata{main}{requires} .= ", ".expandmacros("$1", 'gp');
[38]	811	} elsif (/^provides:\s+(.+)/i) {
[103]	812	$pkgdata{main}{provides} .= ", $1";
[51]	813	} elsif (/^conflicts:\s+(.+)/i) {
[103]	814	$pkgdata{main}{conflicts} .= ", $1";
[5]	815	}
[103]	816	next LINE;
	817	} # preamble
[5]	818
[103]	819	} # while <SPEC>
[7]	820
[14]	821	# Parse and replace some more macros. More will be replaced even later.
	822
[10]	823	# Expand macros as necessary.
[12]	824	$scriptletbase = expandmacros($scriptletbase,'gp');
[7]	825
[103]	826	$cleanscript = expandmacros($cleanscript,'gp');
	827
[7]	828	$buildroot = $cmdbuildroot if $cmdbuildroot;
[12]	829	$buildroot = expandmacros($buildroot,'gp');
[7]	830
[16]	831	close SPECFILE;
[5]	832	} # end parse_spec()
	833
	834
[7]	835	## prep()
[14]	836	# Writes and executes the %prep script (mostly) built while reading the spec file.
[7]	837	sub prep {
[10]	838	# Replace some things here just to make sure.
[12]	839	$prepscript = expandmacros($prepscript,'gp');
[10]	840
	841	# create script filename
[13]	842	my $prepscriptfile = "$tmpdir/deb-tmp.prep.".int(rand(99998)+1);
[10]	843	sysopen(PREPSCRIPT, $prepscriptfile, O_RDWR \| O_CREAT \| O_EXCL \| O_NOFOLLOW)
[7]	844	or die $!;
[10]	845	print PREPSCRIPT $scriptletbase;
	846	print PREPSCRIPT $prepscript;
	847	close PREPSCRIPT;
[7]	848
[10]	849	# execute
	850	print "Calling \%prep script $prepscriptfile...\n";
	851	system("/bin/sh -e $prepscriptfile") == 0
[14]	852	or die "Can't exec: $!\n";
[7]	853
[10]	854	# and clean up
	855	unlink $prepscriptfile;
[7]	856	} # end prep()
	857
	858
[5]	859	## build()
[14]	860	# Writes and executes the %build script (mostly) built while reading the spec file.
[5]	861	sub build {
[12]	862	# Expand the macros
	863	$buildscript = expandmacros($buildscript,'cgbp');
	864
[7]	865	# create script filename
[13]	866	my $buildscriptfile = "$tmpdir/deb-tmp.build.".int(rand(99998)+1);
[7]	867	sysopen(BUILDSCRIPT, $buildscriptfile, O_RDWR \| O_CREAT \| O_EXCL \| O_NOFOLLOW)
	868	or die $!;
	869	print BUILDSCRIPT $scriptletbase;
	870	print BUILDSCRIPT $buildscript;
	871	close BUILDSCRIPT;
	872
	873	# execute
	874	print "Calling \%build script $buildscriptfile...\n";
	875	system("/bin/sh -e $buildscriptfile") == 0
[14]	876	or die "Can't exec: $!\n";
[7]	877
	878	# and clean up
	879	unlink $buildscriptfile;
[5]	880	} # end build()
	881
	882
[7]	883	## install()
[14]	884	# Writes and executes the %install script (mostly) built while reading the spec file.
[7]	885	sub install {
[12]	886	# Expand the macros
	887	$installscript = expandmacros($installscript,'igbp');
	888
[7]	889	# create script filename
[13]	890	my $installscriptfile = "$tmpdir/deb-tmp.inst.".int(rand(99998)+1);
[7]	891	sysopen(INSTSCRIPT, $installscriptfile, O_RDWR \| O_CREAT \| O_EXCL \| O_NOFOLLOW)
	892	or die $!;
	893	print INSTSCRIPT $scriptletbase;
	894	print INSTSCRIPT $installscript;
	895	close INSTSCRIPT;
	896
	897	# execute
	898	print "Calling \%install script $installscriptfile...\n";
	899	system("/bin/sh -e $installscriptfile") == 0
[14]	900	or die "Can't exec: $!\n";
[7]	901
	902	# and clean up
	903	unlink $installscriptfile;
	904	} # end install()
	905
	906
[8]	907	## binpackage()
	908	# Creates the binary .deb package from the installed tree in $buildroot.
[14]	909	# Writes and executes a shell script to do so.
	910	# Creates miscellaneous files required by dpkg-deb to actually build the package file.
[27]	911	# Should handle simple subpackages
[8]	912	sub binpackage {
[14]	913
[27]	914	foreach my $pkg (@pkglist) {
[8]	915
[87]	916	$pkgdata{$pkg}{arch} = $hostarch if !$pkgdata{$pkg}{arch}; # Just In Case.
	917
	918	# Make sure we have somewhere to write the .deb file
	919	if (!-e "$topdir/DEBS/$pkgdata{$pkg}{arch}") {
	920	mkdir "$topdir/DEBS/$pkgdata{$pkg}{arch}";
	921	}
	922
[73]	923	# Skip building a package if it doesn't actually have any files. NB: This
	924	# differs slightly from rpm's behaviour where a package will be built -
	925	# even without any files - if %files is specified anywhere. I can think
	926	# of odd corner cases where that may be desireable.
[74]	927	next if (!$filelist{$pkg} or $filelist{$pkg} =~ /^\s*$/);
[73]	928
[27]	929	# Gotta do this first, otherwise we don't have a place to move files from %files
	930	mkdir "$buildroot/$pkg";
[28]	931
[30]	932	# Eliminate any lingering % macros
	933	$filelist{$pkg} = expandmacros $filelist{$pkg}, 'g';
	934
[27]	935	my @pkgfilelist = split ' ', $filelist{$pkg};
	936	foreach my $pkgfile (@pkgfilelist) {
[37]	937	$pkgfile = expandmacros($pkgfile, 'gp');
[44]	938	my ($fpath,$fname) = ($pkgfile =~ m\|(.+?/?)?([^/]+)$\|); # We don't need $fname now, but we might.
	939	qx { mkdir -p $buildroot/$pkg$fpath }
	940	if $fpath && $fpath ne '';
	941	qx { mv $buildroot$pkgfile $buildroot/$pkg$fpath };
[27]	942	}
[28]	943
[38]	944	# Get the "Depends" (Requires) a la RPM. Ish. We strip the leading
	945	# comma and space here (if needed) in case there were "Requires" specified
	946	# in the spec file - those would precede these.
[64]	947	$pkgdata{$pkg}{requires} .= getreqs("$buildroot/$pkg");
[38]	948
[64]	949	# magic needed to properly version dependencies...
	950	# only provided deps will really be included
[65]	951	$pkgdata{$pkg}{requires} =~ s/^, //; # Still have to do this here.
[64]	952	$pkgdata{$pkg}{requires} =~ s/\s+//g;
	953	my @deps = split /,/, $pkgdata{$pkg}{requires};
	954	my $tmp = '';
	955	foreach my $dep (@deps) {
[68]	956	# Hack up the perl(Class::SubClass) deps into something dpkg can understand.
	957	# May or may not be versioned.
	958	# We do this first so the version rewriter can do its magic next.
	959	if (my ($mod,$ver) = ($dep =~ /^perl\(([A-Za-z0-9\:\-]+)\)([><=]+.+)?/) ) {
	960	$mod =~ s/^perl\(//;
	961	$mod =~ s/\)$//;
	962	$mod =~ s/::/-/g;
	963	$mod =~ tr/A-Z/a-z/;
	964	$mod = "lib$mod-perl";
	965	$mod .= $ver if $ver;
	966	$dep = $mod;
	967	}
[64]	968	if (my ($name,$rel,$value) = ($dep =~ /^([a-zA-Z0-9._-]+)([><=]+)([a-zA-Z0-9._-]+)$/)) {
	969	$tmp .= ", $name ($rel $value)";
	970	} else {
	971	$tmp .= ", $dep";
	972	}
	973	}
	974	($pkgdata{$pkg}{requires} = $tmp) =~ s/^, //;
	975
[38]	976	# Do this here since we're doing {depends}...
[41]	977	if (defined($pkgdata{$pkg}{provides})) {
	978	$pkgdata{$pkg}{provides} =~ s/^, //;
	979	$pkgdata{$pkg}{provides} = expandmacros($pkgdata{$pkg}{provides},'gp');
	980	}
[51]	981	if (defined($pkgdata{$pkg}{conflicts})) {
	982	$pkgdata{$pkg}{conflicts} =~ s/^, //;
	983	$pkgdata{$pkg}{conflicts} = expandmacros($pkgdata{$pkg}{conflicts},'gp');
	984	}
[38]	985
[27]	986	# Gotta do this next, otherwise the control file has nowhere to go. >:(
	987	mkdir "$buildroot/$pkg/DEBIAN";
	988
[33]	989	# Hack the filename for the package into a Debian-tool-compatible format. GRRRRRR!!!!!
	990	# Have I mentioned I hate Debian Policy?
	991	$pkgdata{$pkg}{name} =~ tr/_/-/;
	992
[27]	993	# create script filename
	994	my $debscriptfile = "$tmpdir/deb-tmp.pkg.".int(rand(99998)+1);
	995	sysopen(DEBSCRIPT, $debscriptfile, O_RDWR \| O_CREAT \| O_EXCL \| O_NOFOLLOW)
[8]	996	or die $!;
[27]	997	print DEBSCRIPT $scriptletbase;
[87]	998	print DEBSCRIPT "fakeroot dpkg-deb -b $buildroot/$pkg $topdir/DEBS/$pkgdata{$pkg}{arch}/".
	999	"$pkgdata{$pkg}{name}_$pkgdata{$pkg}{version}-$pkgdata{main}{release}_$pkgdata{$pkg}{arch}.deb\n";
[27]	1000	# %$&$%@#@@#%@@@ Debian and their horrible ugly package names. >:(
	1001	close DEBSCRIPT;
[8]	1002
[27]	1003	my $control = "Package: $pkgdata{$pkg}{name}\n".
	1004	"Version: $pkgdata{$pkg}{version}-$pkgdata{main}{release}\n".
	1005	"Section: $pkgdata{$pkg}{group}\n".
[8]	1006	"Priority: optional\n".
[87]	1007	"Architecture: $pkgdata{$pkg}{arch}\n".
[8]	1008	"Maintainer: $pkgdata{main}{packager}\n".
[47]	1009	( $pkgdata{$pkg}{requires} ne '' ? "Depends: $pkgdata{$pkg}{requires}\n" : '' ).
[39]	1010	( defined($pkgdata{$pkg}{provides}) ? "Provides: $pkgdata{$pkg}{provides}\n" : '' ).
[51]	1011	( defined($pkgdata{$pkg}{conflicts}) ? "Conflicts: $pkgdata{$pkg}{conflicts}\n" : '' ).
[27]	1012	"Description: $pkgdata{$pkg}{summary}\n";
	1013	$control .= "$pkgdata{$pkg}{desc}\n";
[8]	1014
[27]	1015	open CONTROL, ">$buildroot/$pkg/DEBIAN/control";
	1016	print CONTROL $control;
	1017	close CONTROL;
[8]	1018
[37]	1019	# Iff there are conffiles (as specified in the %files list(s), add'em
	1020	# in so dpkg-deb can tag them.
	1021	if ($pkgdata{$pkg}{conffiles}) {
	1022	open CONFLIST, ">$buildroot/$pkg/DEBIAN/conffiles";
	1023	foreach my $conffile (@{$pkgdata{$pkg}{conflist}}) {
	1024	print CONFLIST "$conffile\n";
	1025	}
	1026	close CONFLIST;
	1027	}
	1028
[75]	1029	# found the point of scripts on subpackages.
	1030	if ($pkgdata{$pkg}{'pre'}) {
	1031	$pkgdata{$pkg}{'pre'} = expandmacros($pkgdata{$pkg}{'pre'},'gp');
	1032	open PREINST, ">$buildroot/$pkg/DEBIAN/preinst";
	1033	print PREINST "#!/bin/sh\nset -e\n\n";
	1034	print PREINST $pkgdata{$pkg}{'pre'};
	1035	close PREINST;
	1036	`chmod 0755 $buildroot/$pkg/DEBIAN/preinst`;
[27]	1037	}
[75]	1038	if ($pkgdata{$pkg}{'post'}) {
	1039	$pkgdata{$pkg}{'post'} = expandmacros($pkgdata{$pkg}{'post'},'gp');
	1040	open PREINST, ">$buildroot/$pkg/DEBIAN/postinst";
	1041	print PREINST "#!/bin/sh\nset -e\n\n";
	1042	print PREINST $pkgdata{$pkg}{'post'};
	1043	close PREINST;
	1044	`chmod 0755 $buildroot/$pkg/DEBIAN/postinst`;
	1045	}
	1046	if ($pkgdata{$pkg}{'preun'}) {
	1047	$pkgdata{$pkg}{'pre'} = expandmacros($pkgdata{$pkg}{'preun'},'gp');
	1048	open PREINST, ">$buildroot/$pkg/DEBIAN/prerm";
	1049	print PREINST "#!/bin/sh\nset -e\n\n";
	1050	print PREINST $pkgdata{$pkg}{'preun'};
	1051	close PREINST;
	1052	`chmod 0755 $buildroot/$pkg/DEBIAN/prerm`;
	1053	}
	1054	if ($pkgdata{$pkg}{'postun'}) {
	1055	$pkgdata{$pkg}{'postun'} = expandmacros($pkgdata{$pkg}{'postun'},'gp');
	1056	open PREINST, ">$buildroot/$pkg/DEBIAN/postrm";
	1057	print PREINST "#!/bin/sh\nset -e\n\n";
	1058	print PREINST $pkgdata{$pkg}{'postun'};
	1059	close PREINST;
	1060	`chmod 0755 $buildroot/$pkg/DEBIAN/postrm`;
	1061	}
[16]	1062
[27]	1063	# execute
	1064	print "Calling package creation script $debscriptfile for $pkgdata{$pkg}{name}...\n";
	1065	system("/bin/sh -e $debscriptfile") == 0
[14]	1066	or die "Can't exec: $!\n";
[8]	1067
[77]	1068	$finalmessages .= "Wrote binary package ".
[87]	1069	"$pkgdata{$pkg}{name}_$pkgdata{$pkg}{version}-$pkgdata{main}{release}_$pkgdata{$pkg}{arch}.deb".
	1070	" in $topdir/DEBS/$pkgdata{$pkg}{arch}\n";
[27]	1071	# and clean up
	1072	unlink $debscriptfile;
	1073
	1074	} # subpackage loop
	1075
[8]	1076	} # end binpackage()
	1077
	1078
[35]	1079	## srcpackage()
	1080	# Builds a .src.deb source package. Note that Debian's idea of
	1081	# a "source package" is seriously flawed IMO, because you can't
	1082	# easily copy it as-is.
[36]	1083	# Not quite identical to RPM, but Good Enough (TM).
[35]	1084	sub srcpackage {
[54]	1085	# In case we were called with -bs.
	1086	$pkgdata{main}{name} =~ tr/_/-/;
[36]	1087	my $pkgsrcname = "$pkgdata{main}{name}-$pkgdata{main}{version}-$pkgdata{main}{release}.sdeb";
	1088
	1089	my $paxcmd;
	1090
	1091	# We'll definitely need this later, and may need it sooner.
	1092	(my $barespec = $specfile) =~ s\|.+/([^/]+)$\|$1\|;
	1093
	1094	# Copy the specfile to the build tree, but only if it's not there already.
	1095	##buglet: need to deal with silly case where silly user has put the spec
	1096	# file in a subdir of %{_topdir}/SPECS. Ewww. Silly user!
	1097	if (abs_path($specfile) !~ /^$topdir\/SPECS/) {
	1098	$paxcmd .= "cp $specfile %{_topdir}/SPECS/; \n"
	1099	}
	1100
[35]	1101	# use pax -w [file] [file] ... >outfile.sdeb
[36]	1102	$paxcmd = "cd $topdir; pax -w ";
[10]	1103
[35]	1104	# tweak source entry into usable form. Need it locally somewhere along the line.
	1105	(my $pkgsrc = $pkgdata{main}{source}) =~ s\|.+/([^/]+)$\|$1\|;
[36]	1106	$paxcmd .= "SOURCES/$pkgsrc ";
[10]	1107
[35]	1108	# create file list: Source[nn], Patch[nn]
	1109	foreach my $specbit (keys %{$pkgdata{main}} ) {
	1110	next if $specbit eq 'source';
[53]	1111	$paxcmd .= "SOURCES/$pkgdata{main}{$specbit} " if $specbit =~ /^patch/;
[36]	1112	##buglet: need to deal with case where patches are listed as URLs?
	1113	# or other extended pathnames? Silly !@$%^&!%%!%!! user!
[35]	1114	}
	1115
[53]	1116	foreach my $source (keys %{$pkgdata{sources}}) {
	1117	$paxcmd .= "SOURCES/$pkgdata{sources}{$source} ";
	1118	}
	1119
[36]	1120	# add the spec file, source package destination, and cd back where we came from.
	1121	$paxcmd .= "SPECS/$barespec > $topdir/SDEBS/$pkgsrcname; cd -";
[35]	1122
[36]	1123	# In case of %-macros...
[35]	1124	$paxcmd = expandmacros($paxcmd,'gp');
	1125
[36]	1126	system "$paxcmd";
[77]	1127	$finalmessages .= "Wrote source package $pkgsrcname in $topdir/SDEBS.\n";
[97]	1128	} # end srcpackage()
[35]	1129
	1130
[97]	1131	## clean()
	1132	# Writes and executes the %clean script (mostly) built while reading the spec file.
	1133	sub clean {
	1134	# Replace some things here just to make sure.
	1135	$cleanscript = expandmacros($cleanscript,'gp');
	1136
	1137	# create script filename
	1138	my $cleanscriptfile = "$tmpdir/deb-tmp.clean.".int(rand(99998)+1);
	1139	sysopen(CLEANSCRIPT, $cleanscriptfile, O_RDWR \| O_CREAT \| O_EXCL \| O_NOFOLLOW)
	1140	or die $!;
	1141	print CLEANSCRIPT $scriptletbase;
	1142	print CLEANSCRIPT $cleanscript;
	1143	close CLEANSCRIPT;
	1144
	1145	# execute
	1146	print "Calling \%clean script $cleanscriptfile...\n";
	1147	system("/bin/sh -e $cleanscriptfile") == 0
	1148	or die "Can't exec: $!\n";
	1149
	1150	# and clean up
	1151	unlink $cleanscriptfile;
	1152	} # end clean()
	1153
	1154
[38]	1155	## checkbuildreq()
	1156	# Checks the build requirements (if any)
	1157	# Spits out a rude warning and returns a true-false error if any
	1158	# requirements are not met.
	1159	sub checkbuildreq {
[40]	1160	return 1 if $buildreq eq ''; # No use doing extra work.
[38]	1161
[52]	1162	if ( ! -e "/usr/bin/dpkg-query" ) {
	1163	print "WARNING dpkg-query not found. Can't check build-deps.\n".
	1164	" Required for sucessful build:\n".$buildreq."\n".
	1165	" Continuing anyway.\n";
	1166	return 1;
	1167	}
	1168
[38]	1169	my $reqflag = 1; # unset iff a buildreq is missing
	1170
	1171	$buildreq =~ s/^, //; # Strip the leading comma and space
	1172	my @reqlist = split /,\s+/, $buildreq;
	1173
	1174	foreach my $req (@reqlist) {
	1175	my ($pkg,$rel,$ver);
	1176
	1177	# We have two classes of requirements - versioned and unversioned.
	1178	if ($req =~ /[><=]/) {
	1179	# Pick up the details of versioned buildreqs
	1180	($pkg,$rel,$ver) = ($req =~ /([a-z0-9._-]+)\s+([><=]+)\s+([a-z0-9._-]+)/);
	1181	} else {
	1182	# And the unversioned ones.
	1183	$pkg = $req;
	1184	$rel = '>=';
	1185	$ver = 0;
	1186	}
	1187
	1188	my @pkglist = qx { dpkg-query --showformat '\${status}\t\${version}\n' -W $pkg };
	1189	# need to check if no lines returned - means a bad buildreq
	1190	my ($reqstat,undef,undef,$reqver) = split /\s+/, $pkglist[0];
	1191	if ($reqstat !~ /install/) {
	1192	print " * Missing build-dependency $pkg!\n";
	1193	$reqflag = 0;
	1194	} else {
	1195	# gotta be a better way to do this... :/
	1196	if ($rel eq '>=' && !($reqver ge $ver)) {
	1197	print " * Buildreq $pkg is installed, but wrong version ($reqver): Need $ver\n";
	1198	$reqflag = 0;
	1199	}
	1200	if ($rel eq '>' && !($reqver gt $ver)) {
	1201	print " * Buildreq $pkg is installed, but wrong version ($reqver): Need $ver\n";
	1202	$reqflag = 0;
	1203	}
	1204	if ($rel eq '<=' && !($reqver le $ver)) {
	1205	print " * Buildreq $pkg is installed, but wrong version ($reqver): Need $ver\n";
	1206	$reqflag = 0;
	1207	}
	1208	if ($rel eq '<' && !($reqver lt $ver)) {
	1209	print " * Buildreq $pkg is installed, but wrong version ($reqver): Need $ver\n";
	1210	$reqflag = 0;
	1211	}
	1212	if ($rel eq '=' && !($reqver eq $ver)) {
	1213	print " * Buildreq $pkg is installed, but wrong version ($reqver): Need $ver\n";
	1214	$reqflag = 0;
	1215	}
	1216	} # end not installed/installed check
	1217	} # end req loop
	1218
	1219	return $reqflag;
	1220	} # end checkbuildreq()
	1221
	1222
	1223	## getreqs()
	1224	# Find out which libraries/packages are required for any
	1225	# executables and libs in a given file tree.
	1226	# (Debian doesn't have soname-level deps; just package-level)
[41]	1227	# Returns an empty string if the tree contains no binaries.
	1228	# Doesn't work well on shell scripts. but those should be
	1229	# fine anyway. (Yeah, right...)
[38]	1230	sub getreqs() {
	1231	my $pkgtree = $_[0];
	1232
[39]	1233	print "Checking library requirements...\n";
[43]	1234	my @binlist = qx { find $pkgtree -type f -perm 755 };
[38]	1235
[41]	1236	if (scalar(@binlist) == 0) {
	1237	return '';
	1238	}
	1239
	1240	my @reqlist;
	1241	foreach (@binlist) {
	1242	push @reqlist, qx { ldd $_ };
	1243	}
	1244
	1245	# Get the list of libs provided by this package. Still doesn't
	1246	# handle the case where the lib gets stuffed into a subpackage. :/
	1247	my @intprovlist = qx { find $pkgtree -type f -name ".so" };
	1248	my $provlist = '';
	1249	foreach (@intprovlist) {
	1250	s/$pkgtree//;
	1251	$provlist .= "$_";
	1252	}
	1253
[38]	1254	my %reqs;
[43]	1255	my $reqlibs = '';
[38]	1256
	1257	foreach (@reqlist) {
	1258	next if /^$pkgtree/;
[42]	1259	next if /not a dynamic executable/;
[41]	1260	next if m\|/lib/ld-linux.so\|; # Hack! Hack! PTHBTT! (libc suxx0rz)
[100]	1261	next if /linux-gate.so/; # Kernel hackery for teh W1n!!1!1eleventy-one!1 (Don't ask. Feh.)
[38]	1262
[41]	1263	my ($req) = (/^\s+([a-z0-9._-]+)/); # dig out the actual library (so)name
	1264
	1265	# Ignore libs provided by this package. Note that we don't match
	1266	# on word-boundary at the end of the lib we're looking for, as the
	1267	# looked-for lib may not have the full soname version. (ie, it may
	1268	# "just" point to one of the symlinks that get created somewhere.)
	1269	next if $provlist =~ /\b$req/;
	1270
[38]	1271	$reqlibs .= " $req";
	1272	}
	1273
[43]	1274	if ($reqlibs ne '') {
	1275	foreach (qx { dpkg -S $reqlibs }) {
	1276	my ($libpkg,undef) = split /:\s+/;
	1277	$reqs{$libpkg} = 1;
	1278	}
[38]	1279	}
	1280
[43]	1281	my $deplist = '';
[38]	1282	foreach (keys %reqs) {
	1283	$deplist .= ", $_";
	1284	}
	1285
	1286	# For now, we're done. We're not going to meddle with versions yet.
	1287	# Among other things, it's messier than handling "simple" yes/no "do
	1288	# we have this lib?" deps. >:(
	1289
	1290	return $deplist;
	1291	} # end getreqs()
	1292
	1293
[50]	1294	## install_sdeb()
	1295	# Extracts .sdeb contents to %_topdir as appropriate
	1296	sub install_sdeb {
[92]	1297	$srcpkg = abs_path($srcpkg);
	1298
[50]	1299	my $paxcmd = "cd $topdir; pax -r <$srcpkg; cd -";
	1300
	1301	# In case of %-macros...
	1302	$paxcmd = expandmacros($paxcmd,'gp');
	1303
	1304	system "$paxcmd";
	1305	print "Extracted source package $srcpkg to $topdir.\n";
	1306	} # end install_sdeb()
	1307
	1308
[10]	1309	## expandmacros()
	1310	# Expands all %{blah} macros in the passed string
[14]	1311	# Split up a bit with some sections so we don't spend time trying to
	1312	# expand macros that are only used in a few specific places.
[10]	1313	sub expandmacros {
	1314	my $macrostring = shift;
[14]	1315	my $section = shift;
[10]	1316
[25]	1317	# To allow the FHS-ish %configure and %makeinstall to work The Right Way.
[12]	1318	# (Without clobbering the global $buildroot.)
	1319	my $prefix = '';
	1320
[11]	1321	if ($section =~ /c/) {
[12]	1322	# %configure macro
[17]	1323	# Don't know what it's for, don't have a useful default replacement
	1324	# --program-prefix=%{_program_prefix} \
	1325	$macrostring =~ s'%configure'./configure --host=$DEB_HOST_GNU_TYPE \
	1326	--build=$DEB_BUILD_GNU_TYPE \
	1327	--prefix=%{_prefix} \
	1328	--exec-prefix=%{_exec_prefix} \
	1329	--bindir=%{_bindir} \
	1330	--sbindir=%{_sbindir} \
	1331	--sysconfdir=%{_sysconfdir} \
	1332	--datadir=%{_datadir} \
	1333	--includedir=%{_includedir} \
	1334	--libdir=%{_libdir} \
	1335	--libexecdir=%{_libexecdir} \
	1336	--localstatedir=%{_localstatedir} \
	1337	--sharedstatedir=%{_sharedstatedir} \
	1338	--mandir=%{_mandir} \
	1339	--infodir=%{_infodir} ';
[12]	1340	} # done %configure
	1341
	1342	if ($section =~ /m/) {
	1343	$macrostring =~ s'%{__make}'make ';
[25]	1344	} # done make
[12]	1345
	1346	if ($section =~ /i/) {
	1347	# This is where we need to mangle $prefix.
[24]	1348	$macrostring =~ s'%makeinstall'make %{fhs} install';
[12]	1349	$prefix = $buildroot;
	1350	} # done %install and/or %makeinstall
	1351
	1352	# Build data
	1353	# Note that these are processed in reverse order to get the substitution order right
	1354	if ($section =~ /b/) {
[24]	1355	# $macrostring =~ s'%{fhs}'host=$DEB_HOST_GNU_TYPE \
	1356	# build=$DEB_BUILD_GNU_TYPE \
	1357	$macrostring =~ s'%{fhs}'prefix=%{_prefix} \
[17]	1358	exec-prefix=%{_exec_prefix} \
	1359	bindir=%{_bindir} \
	1360	sbindir=%{_sbindir} \
	1361	sysconfdir=%{_sysconfdir} \
	1362	datadir=%{_datadir} \
	1363	includedir=%{_includedir} \
	1364	libdir=%{_libdir} \
	1365	libexecdir=%{_libexecdir} \
	1366	localstatedir=%{_localstatedir} \
	1367	sharedstatedir=%{_sharedstatedir} \
	1368	mandir=%{_mandir} \
	1369	infodir=%{_infodir} \
	1370	';
[10]	1371
	1372	# Note that the above regex terminates with the extra space
[12]	1373	# "Just In Case" of user additions, which will then get neatly
	1374	# tagged on the end where they take precedence (supposedly)
	1375	# over the "default" ones.
[10]	1376
[14]	1377	# Now we cascade the macros introduced above. >_<
	1378	# Wot ot to go theah:
	1379	$macrostring =~ s\|%{_mandir}\|%{_datadir}/man\|g; #/usr/share/man
	1380	$macrostring =~ s\|%{_infodir}\|%{_datadir}/info\|g; #/usr/share/info
[25]	1381	$macrostring =~ s\|%{_oldincludedir}\|/usr/include\|g; #/usr/include
[84]	1382	$macrostring =~ s\|%{_includedir}\|%{_prefix}/include\|g; #/usr/include
[25]	1383	$macrostring =~ s\|%{_libdir}\|%{_exec_prefix}/%{_lib}\|g; #/usr/lib
[14]	1384	$macrostring =~ s\|%{_lib}\|lib\|g; #?
[25]	1385	$macrostring =~ s\|%{_localstatedir}\|/var\|g; #/var
	1386	$macrostring =~ s\|%{_sharedstatedir}\|%{_prefix}/com\|g; #/usr/com WTF?
	1387	$macrostring =~ s\|%{_sysconfdir}\|/etc\|g; #/etc
	1388	$macrostring =~ s\|%{_datadir}\|%{_prefix}/share\|g; #/usr/share
	1389	$macrostring =~ s\|%{_libexecdir}\|%{_exec_prefix}/libexec\|g; #/usr/libexec
	1390	$macrostring =~ s\|%{_sbindir}\|%{_exec_prefix}/sbin\|g; #/usr/sbin
	1391	$macrostring =~ s\|%{_bindir}\|%{_exec_prefix}/bin\|g; #/usr/bin
	1392	$macrostring =~ s\|%{_exec_prefix}\|%{_prefix}\|g; #/usr
[14]	1393	$macrostring =~ s\|%{_prefix}\|/usr\|g; #/usr
[10]	1394	} # done with config section
	1395
[12]	1396	# Package data
	1397	if ($section =~ /p/) {
[15]	1398	$macrostring =~ s/\%\{buildroot\}/$buildroot/gi;
	1399	foreach my $source (keys %{$pkgdata{sources}}) {
	1400	$macrostring =~ s/\%\{source$source\}/$topdir\/SOURCES\/$pkgdata{sources}{$source}/gi;
	1401	}
	1402	$macrostring =~ s/\%\{name\}/$pkgdata{main}{name}/gi;
	1403	$macrostring =~ s/\%\{version\}/$pkgdata{main}{version}/gi;
	1404	$macrostring =~ s/\%\{release\}/$pkgdata{main}{release}/gi;
[12]	1405	}
	1406
	1407	# Globals, and not-so-globals
	1408	if ($section =~ /g/) {
[60]	1409
[29]	1410	$macrostring =~ s\|%{_builddir}\|%{_topdir}/BUILD\|g;
	1411	$macrostring =~ s\|%{_topdir}\|$topdir\|g;
[13]	1412	$macrostring =~ s\|%{_tmppath}\|$tmpdir\|g;
[84]	1413	$macrostring =~ s'%{_docdir}'%{_datadir}/doc'g;
[23]	1414
[31]	1415	# Standard FHS locations. More or less.
[30]	1416	$macrostring =~ s'%{_bindir}'/usr/bin'g;
[31]	1417	$macrostring =~ s'%{_sbindir}'/usr/sbin'g;
[84]	1418	$macrostring =~ s'%{_mandir}'%{_datadir}/man'g;
[30]	1419	$macrostring =~ s'%{_includedir}'/usr/include'g;
[31]	1420	$macrostring =~ s'%{_libdir}'/usr/lib'g;
	1421	$macrostring =~ s'%{_sysconfdir}'/etc'g;
	1422	$macrostring =~ s'%{_localstatedir}'/var'g;
[30]	1423
[84]	1424	# FHS-ish locations that aren't quite actually FHS-specified.
	1425	$macrostring =~ s'%{_datadir}'/usr/share'g;
	1426
[23]	1427	# %define's
	1428	foreach my $key (keys %specglobals) {
	1429	$macrostring =~ s\|%{$key}\|$specglobals{$key}\|g;
	1430	}
	1431
[96]	1432	# special %define's. Handle the general case where we eval anything.
	1433	# Even more general: %(...) is a spec-parse-time shell code wrapper.
	1434	# Prime example:
	1435	#%define perl_vendorlib %(eval "`perl -V:installvendorlib`"; echo $installvendorlib)
	1436	if ($macrostring =~ /\%\((.+)\)/) {
	1437	my $shellstr = $1;
	1438	# Oy vey this gets silly for the perl bits. Executing a shell to
	1439	# call Perl to get the vendorlib/sitelib/whatever "core" globals.
	1440	# This can do more, but... eww.
	1441	$shellstr = qx { /bin/sh -c '$shellstr' }; # Yay! ' characters apparently get properly exscapededed.
	1442	$macrostring =~ s/\%\(.+\)/$shellstr/;
	1443	}
	1444
[95]	1445	# support for some %if constructs. Note that this breaks somewhat if
	1446	# there's no value specified... but so does rpm.
	1447	while ($macrostring =~ /\%\{\?(\!)?([a-z0-9_.-]+)(?:\:([a-z0-9_.-]+))?\}/) { #Whew....
	1448	my $neg = $1;
	1449	my $macro = $2;
	1450	my $value = $3;
	1451	if ($specglobals{$macro}) {
	1452	$value = '' if $neg;
	1453	} else {
	1454	$value = '' if !$neg;
	1455	}
	1456	$macrostring =~ s/\%\{\?\!?[a-z0-9_.-]+(?:\:[a-z0-9_.-]+)?\}/$value/;
	1457	}
	1458
[23]	1459	# system programs. RPM uses a global config file for these; we'll just
	1460	# ASS-U-ME and make life a little simpler.
	1461	if ($macrostring =~ /\%\{\_\_([a-z0-9_-]+)\}/) {
	1462	$macrostring =~ s\|%{__([a-z0-9_-]+)}\|$1\|g;
	1463	}
[87]	1464
	1465	# Misc expansions
	1466	$macrostring =~ s\|%{_arch}\|$hostarch\|g;
	1467	$macrostring =~ s\|%{optflags}\|$optflags{$hostarch}\|g;
	1468
[10]	1469	} # done with globals section
	1470
	1471	return $macrostring;
	1472	} # end expandmacros()
[22]	1473
	1474
	1475
[38]	1476	__END__
	1477
	1478
	1479
[22]	1480	=head1 NAME
	1481
	1482	debbuild - Build Debian-compatible packages from RPM spec files
	1483
	1484	=head1 SYNOPSIS
	1485
	1486	debbuild {-ba\|-bb\|-bp\|-bc\|-bi\|-bl\|-bs} [build-options] file.spec
	1487
	1488	debbuild {-ta\|-tb\|-tp\|-tc\|-ti\|-tl\|-ts} [build-options] file.tar.{gz\|bz2}
	1489
[55]	1490	debbuild --rebuild file.{src.rpm\|sdeb}
[22]	1491
[89]	1492	debbuild --showpkgs
	1493
[22]	1494	=head1 DESCRIPTION
	1495
[55]	1496	This script attempts to build Debian-friendly semi-native packages from RPM spec files,
	1497	RPM-friendly tarballs, and RPM source packages (.src.rpm files). It accepts I<most> of the
	1498	options rpmbuild does, and should be able to interpret most spec files usefully. Perl
	1499	modules should be handled via CPAN+dh-make-perl instead; Debian's conventions for such
	1500	things do not lend themselves to automated conversion.
[22]	1501
[55]	1502	As far as possible, the command-line options are identical to those from rpmbuild, although
[57]	1503	several rpmbuild options are not supported:
[22]	1504
[57]	1505	--recompile
	1506	--showrc
	1507	--buildroot
	1508	--clean
	1509	--nobuild
	1510	--rmsource
	1511	--rmspec
	1512	--sign
	1513	--target
	1514
	1515	Some of these could probably be trivially added. Feel free to send me a patch. ;)
	1516
	1517	Complex spec files will most likely not work well, if at all. Rewrite them from scratch -
	1518	you'll have to make heavy modifications anyway.
	1519
	1520	If you see something you don't like, mail me. Send a patch if you feel inspired. I don't
	1521	promise I'll do anything other than say "Yup, that's broken" or "Got your message".
	1522
[55]	1523	=head1 ASSUMPTIONS
	1524
	1525	As with rpmbuild, debbuild makes some assumptions about your system.
	1526
	1527	=over 4
	1528
	1529	=item *
	1530
	1531	Either you have rights to do as you please under /usr/src/debian, or you have created a file
	1532	~/.debmacros containing a suitable %_topdir definition.
	1533
[57]	1534	Both rpmbuild and debbuild require the directories %_topdir/{BUILD,SOURCES,SPECS}. However,
	1535	where rpmbuild requires the %_topdir/{RPMS,SRPMS} directories, debbuild
	1536	requires %_topdir/{DEBS,SDEBS} instead. Create them in advance;
[55]	1537	some subdirectories are created automatically as needed, but most are not.
	1538
	1539	=item *
	1540
	1541	/var/tmp must allow script execution - rpmbuild and debbuild both rely on creating and
	1542	executing shell scripts for much of their functionality. By default, debbuild also creates
	1543	install trees under /var/tmp - however this is (almost) entirely under the control of the
	1544	package's .spec file.
	1545
	1546	=item *
	1547
	1548	If you wish to --rebuild a .src.rpm, your %_topdir for both debbuild and rpmbuild must either
	1549	match, or be suitably symlinked one direction or another so that both programs are effectively
	1550	working in the same tree. (Or you could just manually wrestle files around your system.)
	1551
	1552	You could symlink ~/.rpmmacros to ~/.debmacros (or vice versa) and save yourself some hassle
	1553	if you need to rebuild .src.rpm packages on a regular basis. Currently debbuild only uses the
	1554	%_topdir macro definition, although there are many more things that rpmbuild can use from
	1555	~/.rpmmacros.
	1556
	1557	=back
	1558
[89]	1559	=head1 ERRATA
	1560
	1561	debbuild deliberately does a few things differently from rpm.
	1562
	1563	=head2 BuildArch or BuildArchitecture
	1564
	1565	rpm takes the last BuildArch entry it finds in the .spec file, whatever it is, and runs with
	1566	that for all packages. Debian's repository system is fairly heavily designed around the
	1567	assumption that a single source package may generate small binary (executable) packages
	1568	for each arch, and large binary arch-all packages containing shared data.
	1569
	1570	debbuild allows this by using the architecture specified by (in order of preference):
	1571
	1572	=over 4
	1573
	1574	=item * Host architecture
	1575
	1576	=item * BuildArch specified in .spec file preamble
	1577
	1578	=item * "Last specified" BuildArch for packages with several subpackages
	1579
	1580	=item * BuildArch specified in the %package section for that subpackage
	1581
	1582	=back
	1583
	1584	=head2 Finding out what packages should be built (--showpkgs)
	1585
	1586	rpmbuild does not include any convenient method I know of to list the packages a spec file
	1587	will produce. Since I needed this ability for another tool, I added it.
	1588
	1589	It requires the .spec file for the package, and produces a list of full package filenames
	1590	(without path data) that would be generated by one of --rebuild, -ta, -tb, -ba, or -bb.
	1591	This includes the .sdeb source package.
	1592
[57]	1593	=head1 AUTHOR
[55]	1594
[57]	1595	debbuild was written by Kris Deugau <kdeugau@deepnet.cx>. A version that approximates
	1596	current is available at http://www.deepnet.cx/debbuild/.
[55]	1597
	1598	=head1 BUGS
	1599
[57]	1600	Funky Things Happen if you forget a command-line option or two. I've been too lazy to bother
	1601	fixing this.
[55]	1602
[57]	1603	Many macro expansions are unsupported or incompletely supported.
	1604
	1605	The generated scriptlets don't quite match those from rpmbuild exactly. There are extra
	1606	environment variables and preprocessing that I haven't needed (yet).
	1607
	1608	Dcumentation, such as it is, will likely remain perpetually out of date.
	1609
	1610	%_topdir and the five "working" directories under %_topdir could arguably be created by
	1611	debbuild. However, rpmbuild doesn't create these directories either.
	1612
	1613	=head1 SEE ALSO
	1614
	1615	rpm(8), rpmbuild(8), and pretty much any document describing how to write a .spec file.
	1616
[22]	1617	=cut

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