source: trunk/debbuild@ 126

Last change on this file since 126 was 126, checked in by kdeugau, 17 years ago

/trunk

Add support for %{echo:}
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1#!/usr/bin/perl -w
2# debbuild script
3# Shamelessly steals interface from rpm's "rpmbuild" to create
4# Debian packages. Please note that such packages are highly
5# unlikely to conform to "Debian Policy".
6###
7# SVN revision info
8# $Date: 2007-08-07 18:47:36 +0000 (Tue, 07 Aug 2007) $
9# SVN revision $Rev: 126 $
10# Last update by $Author: kdeugau $
11###
12# Copyright 2005-2007 Kris Deugau <kdeugau@deepnet.cx>
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
27
28use strict;
29use warnings;
30use Fcntl; # for sysopen flags
31use Cwd 'abs_path'; # for finding where files really are
32use Config;
33
34# regex debugger
35#use re "debug";
36
37# Program flow:
38# -> Parse/execute "system" config/macros (if any - should be rare)
39# -> Parse/execute "user" config/macros (if any - *my* requirement is %_topdir)
40# -> Parse command line for options, spec file/tarball/.src.deb (NB - also accept .src.rpm)
41
42sub expandmacros;
43
44# User's prefs for dirs, environment, etc,etc,etc.
45# config file ~/.debmacros
46# Default ordered search paths for config/macros:
47# /usr/lib/rpm/rpmrc /usr/lib/rpm/redhat/rpmrc /etc/rpmrc ~/.rpmrc
48# /usr/lib/rpm/macros /usr/lib/rpm/redhat/macros /etc/rpm/macros ~/.rpmmacros
49# **NOTE: May be possible to (ab)use bits of debhelper
50
51# Build tree
52# default is /usr/src/debian/{BUILD,SOURCES,SPECS,DEBS,SDEBS}
53
54# Globals
55my $finalmessages = ''; # A place to stuff messages that I want printed at the *very* end of any processing.
56my $specfile;
57my $tarball;
58my $srcpkg;
59my $cmdbuildroot;
60my $tarballdir = '%{name}-%{version}'; # We do this in case of a spec file not using %setup...
61my %specglobals; # For %define's in specfile, among other things.
62
63$specglobals{'_vendor'} = 'debbuild';
64
65# Initialized globals
66my $verbosity = 0;
67my $NoAutoReq = 0;
68my %cmdopts = (type => '',
69 stage => 'a',
70 short => 'n'
71 );
72my $topdir = "/usr/src/debian";
73my $buildroot = "%{_tmppath}/%{name}-%{version}-%{release}.root".int(rand(99998)+1);
74
75# "Constants"
76my %targets = ('p' => 'Prep',
77 'c' => 'Compile',
78 'i' => 'Install',
79 'l' => 'Verify %files',
80 'a' => 'Build binary and source',
81 'b' => 'Build binary',
82 's' => 'Build source'
83 );
84# Ah, the joys of multiple architectures. :( Feh.
85# As copied from rpm
86my %optflags = ( 'i386' => '-O2 -g -march=i386 -mcpu=i686',
87 'amd64' => '-O2 -g'
88 );
89my $hostarch; # we set this later...
90my $scriptletbase =
91q(#!/bin/sh
92
93 RPM_SOURCE_DIR="%{_topdir}/SOURCES"
94 RPM_BUILD_DIR="%{_topdir}/BUILD"
95 RPM_OPT_FLAGS="%{optflags}"
96 RPM_ARCH="%{_arch}"
97 RPM_OS="linux"
98 export RPM_SOURCE_DIR RPM_BUILD_DIR RPM_OPT_FLAGS RPM_ARCH RPM_OS
99 RPM_DOC_DIR="/usr/share/doc"
100 export RPM_DOC_DIR
101 RPM_PACKAGE_NAME="%{name}"
102 RPM_PACKAGE_VERSION="%{version}"
103 RPM_PACKAGE_RELEASE="%{release}"
104 export RPM_PACKAGE_NAME RPM_PACKAGE_VERSION RPM_PACKAGE_RELEASE
105 RPM_BUILD_ROOT="%{buildroot}"
106 export RPM_BUILD_ROOT
107);
108foreach (`dpkg-architecture`) {
109 s/=(.+)/="$1"/;
110 $scriptletbase .= " $_";
111 ($hostarch) = (/^DEB_HOST_ARCH="(.+)"$/) if /DEB_HOST_ARCH=/;
112}
113$scriptletbase .=
114q(
115 set -x
116 umask 022
117 cd %{_topdir}/BUILD
118);
119
120# Hackery to try to bring some semblance of sanity to packages built for more
121# than one Debian version at the same time. Whee.
122# /etc/debian-version
123my %distmap = (
124 "3.1.9ubuntu7.1" => "dapper",
125 "4ubuntu2" => "feisty",
126 "3.0" => "woody",
127 "3.1" => "sarge",
128 "4" => "etch",
129 "4.0" => "lenny",
130 "4.0.0" => "sid");
131# Enh. There doesn't seem to be any better way to do this... :(
132{
133 my $basever = qx { dpkg-query --showformat '\${version}' -W base-files };
134 if ($basever =~ /^\d\.\d\.(\d)$/) {
135 $basever =~ s/\.\d$// if $1 ne '0';
136 }
137# want to do something with this... erm, what was I going to do? O_o
138 my $releasever = qx { cat /etc/debian_version };
139 chomp $releasever;
140
141 $specglobals{"debdist"} = $distmap{$basever};
142 $specglobals{"debver"} = $basever; # this may have trouble with Ubuntu versions?
143}
144
145# Package data
146# This is the form of $pkgdata{pkgname}{meta}
147# meta includes Summary, Name, Version, Release, Group, Copyright,
148# Source, URL, Packager, BuildRoot, Description, BuildReq(uires),
149# Requires, Provides
150# 10/31/2005 Maybe this should be flatter? -kgd
151my %pkgdata;
152my @pkglist = ('main'); #sigh
153# Files listing. Embedding this in %pkgdata would be, um, messy.
154my %filelist;
155my %doclist;
156my $buildreq = '';
157
158# Scriptlets
159my $prepscript = '';
160my $buildscript = '';
161# %install doesn't need the full treatment from %clean; just an empty place to install to.
162# NB - rpm doesn't do this; is it really necessary?
163my $installscript = '[ "$RPM_BUILD_ROOT" != "/" ] && rm -rf $RPM_BUILD_ROOT'."\n";
164my $cleanscript = '';
165
166die "Not enough arguments\n" if #$argv == 0;
167
168# Snag some environment data
169my $tmpdir;
170if (defined $ENV{TMP} && $ENV{TMP} =~ /^(\/var)?\/tmp$/) {
171 $tmpdir = $ENV{TMP};
172} else {
173 $tmpdir = "/var/tmp";
174}
175
176##main
177
178load_userconfig();
179parse_cmd();
180
181if ($cmdopts{install}) {
182 install_sdeb();
183 exit 0;
184}
185
186# output stage of --showpkgs
187if ($cmdopts{type} eq 'd') {
188 parse_spec();
189 foreach my $pkg (@pkglist) {
190 $pkgdata{$pkg}{name} =~ tr/_/-/;
191
192 my $pkgfullname = "$pkgdata{$pkg}{name}_".
193 (defined($pkgdata{main}{epoch}) ? "$pkgdata{main}{epoch}:" : '').
194 "$pkgdata{$pkg}{version}-$pkgdata{main}{release}_$pkgdata{$pkg}{arch}.deb";
195
196 print "$pkgfullname\n" if $filelist{$pkg};
197
198 }
199 # Source package
200 print "$pkgdata{main}{name}-".
201 (defined($pkgdata{main}{epoch}) ? "$pkgdata{main}{epoch}:" : '').
202 "$pkgdata{main}{version}-$pkgdata{main}{release}.sdeb\n";
203 exit 0;
204}
205
206# Stick --rebuild handling in here - basically install_sdeb()
207# followed by tweaking options to run with -ba
208if ($cmdopts{type} eq 's') {
209 if ($srcpkg =~ /\.src\.rpm$/) {
210 my @srclist = qx { rpm -qlp $srcpkg };
211 foreach (@srclist) {
212 chomp;
213 $specfile = "$topdir/SPECS/$_" if /\.spec$/;
214 }
215 qx { rpm -i $srcpkg };
216 } else {
217 install_sdeb();
218 my @srclist = qx { pax < $srcpkg };
219 foreach (@srclist) {
220 chomp;
221 $specfile = "$topdir/$_" if /SPECS/;
222 }
223 }
224 $cmdopts{type} = 'b';
225 $cmdopts{stage} = 'a';
226}
227
228if ($cmdopts{type} eq 'b') {
229 # Need to read the spec file to find the tarball. Note that
230 # this also generates most of the shell script required.
231 parse_spec();
232 die "Can't build $pkgdata{main}{name}: build requirements not met.\n"
233 if !checkbuildreq();
234}
235
236if ($cmdopts{type} eq 't') {
237 # Need to unpack the tarball to find the spec file. Sort of the inverse of -b above.
238 # zcat $tarball |tar -t |grep .spec
239 # collect some info about the tarball
240 $specfile = "$topdir/BUILD/". qx { zcat $tarball |tar -t |grep -e '[\.]spec\$' };
241 chomp $specfile;
242 my ($fileonly, $dirname) = ($tarball =~ /(([a-zA-Z0-9._-]+)\.tar\.(?:gz|bz2))$/);
243
244 $tarball = abs_path($tarball);
245 my $unpackcmd = "cd $topdir/BUILD; tar -".
246 ( $tarball =~ /\.tar\.gz$/ ? "z" : "" ).
247 ( $tarball =~ /\.tar\.bz2$/ ? "j" : "" ). "xf $tarball";
248 system "$unpackcmd";
249 system "cp $tarball $topdir/SOURCES/$fileonly";
250 system "cp $specfile $topdir/SPECS/";
251 parse_spec();
252 die "Can't build $pkgdata{main}{name}: build requirements not met.\n"
253 if !checkbuildreq();
254}
255
256# -> srcpkg if -.s
257if ($cmdopts{stage} eq 's') {
258 srcpackage();
259 exit 0;
260}
261
262# Hokay. Need to:
263# -> prep if -.p OR (-.[cilabs] AND !--short-circuit)
264if ($cmdopts{stage} eq 'p' || ($cmdopts{stage} =~ /[cilabs]/ && $cmdopts{short} ne 'y')) {
265 prep();
266}
267# -> build if -.c OR (-.[ilabs] AND !--short-circuit)
268if ($cmdopts{stage} eq 'c' || ($cmdopts{stage} =~ /[ilabs]/ && $cmdopts{short} ne 'y')) {
269 build();
270}
271# -> install if -.[ilabs]
272#if ($cmdopts{stage} eq 'i' || ($cmdopts{stage} =~ /[labs]/ && $cmdopts{short} ne 'y')) {
273if ($cmdopts{stage} =~ /[ilabs]/) {
274 install();
275#foreach my $pkg (@pkglist) {
276# print "files in $pkg:\n ".$filelist{$pkg}."\n";
277#}
278
279}
280# -> binpkg and srcpkg if -.a
281if ($cmdopts{stage} eq 'a') {
282 binpackage();
283 srcpackage();
284 clean();
285}
286# -> binpkg if -.b
287if ($cmdopts{stage} eq 'b') {
288 binpackage();
289 clean();
290}
291
292# Spit out any closing remarks
293print $finalmessages;
294
295# Just in case.
296exit 0;
297
298
299## load_userconfig()
300# Loads user configuration (if any)
301# Currently only handles .debmacros
302# Needs to handle "other files"
303sub load_userconfig {
304 my $homedir = (getpwuid($<))[7];
305 if (-e "$homedir/.debmacros") {
306 open USERMACROS,"<$homedir/.debmacros";
307 while (<USERMACROS>) {
308 # And we also only handle a few macros at the moment.
309 if (/^\%_topdir/) {
310 my (undef,$tmp) = split /\s+/, $_;
311 $topdir = $tmp;
312 }
313 next if /^\%_/;
314 # Allow arbitrary definitions. Note that we're only doing simple defs here for now.
315 if (/^\%([a-z0-9]+)\s+(.+)$/) {
316 $specglobals{$1} = $2;
317 }
318 }
319 }
320} # end load_userconfig()
321
322
323## parse_cmd()
324# Parses command line into global hash %cmdopts, other globals
325# Options based on rpmbuild's options
326sub parse_cmd {
327 # Don't feel like coding my own option parser...
328 #use Getopt::Long;
329 # ... but I may have to: (OTOH, rpm uses popt, so maybe we can too.)
330 #use Getopt::Popt qw(:all);
331 # Or not. >:( Stupid Debian lack of findable Perl module names in packages.
332
333 # Stuff it.
334 my $prevopt = '';
335 foreach (@ARGV) {
336 chomp;
337
338 # Is it an option?
339 if (/^-/) {
340
341 # Is it a long option?
342 if (/^--/) {
343 if (/^--short-circuit/) {
344 $cmdopts{short} = 'y';
345 } elsif (/^--rebuild/) {
346 $cmdopts{type} = 's';
347 } elsif (/^--showpkgs/) {
348 $cmdopts{type} = 'd'; # d for 'diagnostic' or 'debug' or 'dump'
349 } elsif (/^--define/) {
350 # nothing to do? Can't see anything needed, we handle the actual definition later.
351##fixme
352# add --self-package here
353# deps build-essential pax fakeroot
354 } else {
355 print "Long option $_ not handled\n";
356 }
357 } else {
358 # Not a long option
359 if (/^-[bt]/) {
360 if ($cmdopts{stage} eq 's') {
361 # Mutually exclusive options.
362 die "Can't use $_ with --rebuild\n";
363 } else {
364 # Capture the type (from "bare" files or tarball) and the stage (prep, build, etc)
365 ($cmdopts{stage}) = (/^-[bt]([pcilabs])/);
366 ($cmdopts{type}) = (/^-([bt])[pcilabs]/);
367 }
368 } elsif (/^-v/) {
369 # bump verbosity. Not sure what I'll actually do here...
370 } elsif (/^-i/) {
371 $cmdopts{install} = 1;
372 $prevopt = '-i';
373 } else {
374 die "Bad option $_\n";
375 }
376 }
377
378 } else { # Not an option argument
379
380 # --buildroot is the only option that takes an argument
381 # Therefore, any *other* bare arguments are the spec file,
382 # tarball, or source package we're operating on - depending
383 # on which one we meet.
384 if ($prevopt eq '--buildroot') {
385 $cmdbuildroot = $_;
386 } elsif ($prevopt eq '--define') {
387 my ($macro,$value) = (/([a-z0-9_.-]+)(?:\s+(.+))?/i);
388 if ($value) {
389 $specglobals{$macro} = $value;
390 } else {
391 warn "WARNING: missing value for macro $macro in --define! Ignoring.\n";
392 }
393 } elsif ($prevopt eq '-i') {
394 $srcpkg = $_;
395 } else {
396 if ($cmdopts{type} eq 's') {
397 # Source package
398 if (!/(sdeb|\.src\.rpm)$/) {
399 die "Can't --rebuild with $_\n";
400 }
401 $srcpkg = $_;
402 } elsif ($cmdopts{type} eq 'b' || $cmdopts{type} eq 'd') {
403 # Spec file
404 $specfile = $_;
405 } else {
406 # Tarball build. Need to extract tarball to find spec file. Whee.
407 $tarball = $_;
408 }
409 }
410 }
411 $prevopt = $_;
412 } # foreach @ARGV
413
414 # Some cross-checks. rpmbuild limits --short-circuit to just
415 # the "compile" and "install" targets - with good reason IMO.
416 # Note that --short-circuit with -.p is not really an error, just redundant.
417 # NB - this is NOT fatal, just ignored!
418 if ($cmdopts{short} eq 'y' && $cmdopts{stage} =~ /[labs]/) {
419 warn "Can't use --short-circuit for $targets{$cmdopts{stage}} stage. Ignoring.\n";
420 $cmdopts{short} = 'n';
421 }
422
423 # Valid options, with example arguments (if any):
424# Build from .spec file; mutually exclusive:
425 # -bp
426 # -bc
427 # -bi
428 # -bl
429 # -ba
430 # -bb
431 # -bs
432# Build from tarball; mutually exclusive:
433 # -tp
434 # -tc
435 # -ti
436 # -ta
437 # -tb
438 # -ts
439# Build from .src.(deb|rpm)
440 # --rebuild
441 # --recompile
442
443# General options
444 # --buildroot=DIRECTORY
445 # --clean
446 # --nobuild
447 # --nodeps
448 # --nodirtokens
449 # --rmsource
450 # --rmspec
451 # --short-circuit
452 # --target=CPU-VENDOR-OS
453
454 #my $popt = new Getopt::Popt(argv => \@ARGV, options => \@optionsTable);
455
456} # end parse_cmd()
457
458
459## parse_spec()
460# Parse the .spec file.
461sub parse_spec {
462 open SPECFILE,"<$specfile" or die "specfile ($specfile) barfed: $!";
463
464 my $iflevel = 0;
465 my $buildarch = $hostarch;
466 $pkgdata{main}{arch} = $hostarch;
467
468 my $stage = 'preamble';
469 my $subname = 'main';
470 my $scriptlet;
471
472# Basic algorithm:
473# For each line
474# if it's a member of an %if construct, branch and see which segment of the
475# spec file we need to parse and which one gets discarded, then
476# short-circuit back to the top of the loop.
477# if it's a %section, bump the stage. Preparse addons to the %section line
478# (eg subpackage) and stuff them in suitable loop-global variables, then
479# short-circuit back to the top of the loop.
480# Otherwise, parse the line according to which section we're supposedly
481# parsing right now
482
483LINE: while (<SPECFILE>) {
484 next if /^#/ && $stage eq 'preamble'; # Ignore comments...
485 next if /^\s*$/ && $stage eq 'preamble'; # ... and blank lines.
486
487# no sense in continuing if we find something we don't grok
488 # Yes, this is really horribly fugly. But it's a cheap crosscheck against invalid
489 # %-tags which also make rpmbuild barf. In theory.
490# notes: some of these are not *entirely* case-sensitive (%ifxxx), but most are.
491 # Extracted from the Maximum RPM online doc via:
492 # grep -h %[a-z] *|perl -e 'while (<>) { /\%([a-z0-9]+)\b/; print "$1|\n"; }'|sort -u
493 if (/^%[a-z]/ &&
494 $_ !~ /^%(?:attr|build|changelog|check|clean|config|configure|defattr|define|description|
495 dir|doc|docdir|else|endif|files|ghost|if|ifarch|ifn|ifnarch|ifnos|ifnxxx|fos|ifxxx|
496 install|package|patch|post|postun|pre|prep|preun|readme|setup|
497 triggerin|triggerpostun|triggerun|verify|verifyscript)\b/x
498 ) {
499 my ($badtag) = (/^%([a-z]+)/i);
500 die "Unknown tag \%$badtag at line $. of $specfile\n";
501 }
502
503# preprocess %define's
504 if (my ($key, $def) = (/^\%define\s+([^\s]+)\s+(.+)$/) ) {
505 $specglobals{$key} = expandmacros($def,'g');
506 }
507
508 if (/^\%if/) {
509 s/^\%if//;
510 chomp;
511 my $expr = expandmacros($_, 'g');
512 $iflevel++;
513
514 if ($expr !~ /^\s*\d+\s*$/) {
515 # gots a logic statement we want to turn into a 1 or a 0. most likely by eval'ing it.
516
517 $expr =~ s/\s+//g;
518
519# For Great w00tness! New and Improved multilayered logic handling.
520
521 my @bits = split /\b/, $expr;
522 $expr = '';
523 foreach my $bit (@bits) {
524 next if $bit eq '"';
525 $bit =~ s/"//g;
526 $expr .= qq("$bit") if $bit =~ /^\w+$/;
527 $expr .= $bit if $bit !~ /^\w+$/;
528 }
529
530 # Done in this order so we don't cascade incorrectly. Yes, those spaces ARE correct in the replacements!
531 $expr =~ s/==/ eq /g;
532 $expr =~ s/!=/ ne /g;
533 $expr =~ s/<=>/ cmp /g;
534 $expr =~ s/<=/ le /g;
535 $expr =~ s/>=/ ge /g;
536 $expr =~ s/</ lt /g;
537 $expr =~ s/>/ gt /g;
538
539 # Turn it into something that eval's to a number. Maybe not needed? O_o
540 #$expr = "( $expr ? 1 : 0 )";
541
542 $expr = eval $expr;
543 }
544
545 next LINE if $expr != 0; # This appears to be the only case we call false.
546 while (<SPECFILE>) {
547 if (/^\%endif/) {
548 $iflevel--;
549 next LINE;
550 } elsif (/^\%else/) {
551 next LINE;
552 }
553 }
554 }
555 if (/^\%else/) {
556 while (<SPECFILE>) {
557 if (/^\%endif/) {
558 $iflevel--;
559 next LINE;
560 }
561 }
562 }
563 if (/^\%endif/) {
564 $iflevel--;
565 next LINE;
566 } # %if/%else/%endif
567
568 if (/^\%{echo:(.+)}/) {
569 my $output = expandmacros($1, 'gp');
570 print "$output\n";
571 }
572
573# now we pick out the sections and set "state" to parse that section. Fugly but I can't see a better way. >:(
574
575 if (/^\%description(?:\s+(?:-n\s+)?(.+))?/) {
576 $stage = 'desc';
577 $subname = "main";
578 if ($1) { # Magic to add entries to the right package
579 my $tmp = expandmacros("$1", 'g');
580 if (/-n/) { $subname = $tmp; } else { $subname = "$pkgdata{main}{name}-$tmp"; }
581 }
582 next LINE;
583 } # %description
584
585 if (/^\%package\s+(?:-n\s+)?(.+)/) {
586 $stage = 'package';
587 if ($1) { # Magic to add entries to the right package
588 my $tmp = expandmacros("$1", 'g');
589 if (/-n/) { $subname = $tmp; } else { $subname = "$pkgdata{main}{name}-$tmp"; }
590 }
591 push @pkglist, $subname;
592 $pkgdata{$subname}{name} = $subname;
593 $pkgdata{$subname}{version} = $pkgdata{main}{version};
594 # Build "same arch as previous package found" by default. Where rpm just picks the
595 # *very* last one, we want to allow arch<native>+arch-all
596 # (eg, Apache is i386, but apache-manual is all)
597 $pkgdata{$subname}{arch} = $buildarch; # Since it's likely subpackages will NOT have a BuildArch line...
598 next LINE;
599 } # %package
600
601 if (/^\%prep/) {
602 $stage = 'prep';
603 # This really should be local-ish, but we need just the filename for the source
604 $pkgdata{main}{source} =~ s|.+/([^/]+)$|$1|;
605 # Replace some core macros
606 $pkgdata{main}{source} = expandmacros($pkgdata{main}{source},'gp');
607 next LINE;
608 } # %prep
609
610 if (/^\%build/) {
611 $stage = 'build';
612 $buildscript .= "cd $tarballdir\n";
613 next LINE;
614 } # %build
615
616 if (/^\%install/) {
617 $stage = 'install';
618 $installscript .= "cd $tarballdir\n";
619 next LINE;
620 } # %install
621
622 if (/^\%clean/) {
623 $stage = 'clean';
624 $cleanscript .= "cd $tarballdir\n";
625 next LINE;
626 } # %clean
627
628 if (/^\%(pre|post|preun|postun)\b(?:\s+(?:-n\s+)?(.+))?/i) {
629 $stage = 'prepost';
630 $scriptlet = lc $1;
631 $subname = 'main';
632 if ($2) { # Magic to add entries to the right package
633 my $tmp = expandmacros("$2", 'g');
634 if (/-n/) { $subname = $tmp; } else { $subname = "$pkgdata{main}{name}-$tmp"; }
635 }
636 next LINE;
637 } # %pre/%post/%preun/%postun
638
639 if (/^\%files(?:\s+(?:-n\s+)?(.+))?/) {
640 $stage = 'files';
641 $subname = 'main';
642 if ($1) { # Magic to add entries to the right list of files
643 my $tmp = expandmacros("$1", 'g');
644 if (/-n/) { $subname = $tmp; } else { $subname = "$pkgdata{main}{name}-$tmp"; }
645 }
646 next LINE;
647 } # %files
648
649 if (/^\%changelog/) {
650 $stage = 'changelog';
651 $pkgdata{main}{changelog} = '';
652 next LINE;
653 }
654
655# now we handle individual lines from the various sections
656
657 if ($stage eq 'desc') {
658 $pkgdata{$subname}{desc} .= " $_";
659 } # description
660
661 if ($stage eq 'package') {
662 # gotta expand %defines here. Whee.
663 if (my ($dname,$dvalue) = (/^(Summary|Group|Version|Requires|Provides|BuildArch(?:itecture)?):\s+(.+)$/i)) {
664 $dname =~ tr/[A-Z]/[a-z]/;
665 if ($dname =~ /^BuildArch/i) {
666 $dvalue =~ s/^noarch/all/ig;
667 $buildarch = $dvalue; # Emulate rpm's behaviour to a degree
668 $dname = 'arch';
669 }
670 $pkgdata{$subname}{$dname} = expandmacros($dvalue, 'gp');
671 }
672 } # package
673
674 if ($stage eq 'prep') {
675 # Actual handling for %prep section. May have %setup macro; may
676 # include %patch tags, may be just a bare shell script.
677 if (/^\%setup/) {
678 # Parse out the %setup macro. Note that we aren't supporting
679 # many of RPM's %setup features.
680 $prepscript .= "cd $topdir/BUILD\n";
681 if ( /\s+-n\s+([^\s]+)\s+/ ) {
682 $tarballdir = $1;
683 }
684 $tarballdir = expandmacros($tarballdir,'gp');
685 $prepscript .= "rm -rf $tarballdir\n";
686 if (/\s+-c\s+/) {
687 $prepscript .= "mkdir $tarballdir\ncd $tarballdir\n";
688 }
689 $prepscript .= "tar -".
690 ( $pkgdata{main}{source} =~ /\.tar\.gz$/ ? "z" : "" ).
691 ( $pkgdata{main}{source} =~ /\.tar\.bz2$/ ? "j" : "" ).
692 ( /\s+-q\s+/ ? '' : 'vv' )."xf ".
693 "$topdir/SOURCES/$pkgdata{main}{source}\n".
694 qq(STATUS=\$?\nif [ \$STATUS -ne 0 ]; then\n exit \$STATUS\nfi\n).
695 "cd $topdir/BUILD/$tarballdir\n".
696 qq([ `/usr/bin/id -u` = '0' ] && /bin/chown -Rhf root .\n).
697 qq([ `/usr/bin/id -u` = '0' ] && /bin/chgrp -Rhf root .\n).
698 qq(/bin/chmod -Rf a+rX,g-w,o-w .\n);
699 } elsif ( my ($patchnum,$patchopts) = (/^\%patch([^\s]+)(\s+.+)?$/) ) {
700 chomp $patchnum;
701 $prepscript .= qq(echo "Patch #$patchnum ($pkgdata{main}{"patch$patchnum"}):"\n).
702 "patch ";
703 # If there are options passed, use'em.
704 # Otherwise, catch a bare %patch and ASS-U-ME it's '-p0'-able.
705 # Will break on options that don't provide -pnn, but what the hell.
706 $prepscript .= $patchopts if $patchopts;
707 $prepscript .= "-p0" if !$patchopts;
708 $prepscript .= " -s <$topdir/SOURCES/".$pkgdata{main}{"patch$patchnum"}."\n";
709 } else {
710 $prepscript .= expandmacros($_,'gp');
711 }
712 next LINE;
713 } # prep
714
715 if ($stage eq 'build') {
716 # %build. This is pretty much just a shell script. There
717 # aren't many local macros to deal with.
718 if (/^\%configure/) {
719 $buildscript .= expandmacros($_,'cgbp');
720 } elsif (/^\%\{__make\}/) {
721 $buildscript .= expandmacros($_,'mgbp');
722 } else {
723 $buildscript .= expandmacros($_,'gp');
724 }
725 next LINE;
726 } # build
727
728 if ($stage eq 'install') {
729 if (/^\%makeinstall/) {
730 $installscript .= expandmacros($_,'igbp');
731 } else {
732 $installscript .= expandmacros($_,'gp');
733 }
734 next LINE;
735 } # install
736
737 if ($stage eq 'clean') {
738 $cleanscript .= expandmacros($_,'gp');
739 next LINE;
740 } # clean
741
742 if ($stage eq 'prepost') {
743 $pkgdata{$subname}{$scriptlet} .= expandmacros($_,'gp');
744 next LINE;
745 } # prepost
746
747 if ($stage eq 'files') {
748 # need to deal with these someday
749 next LINE if /^\%dir/;
750 next LINE if /^\%defattr/;
751 next LINE if /^\%verify/;
752 # dunno what to do with this; not sure if there's space in Debian's package structure for it.
753 next LINE if /^\%ghost/;
754 # Debian dpkg doesn't speak "%docdir". Meh.
755 next LINE if /^\%docdir/;
756# my $singleton = 0; # don't recall what this was for
757
758# create and initialize flags
759 my ($perms, $owner, $group, $conf, $filesline);
760 $perms = $owner = $group = $conf = '-';
761
762 $filesline = $_;
763
764 # strip and flag %attr constructs
765 if ($filesline =~ /\%attr\b/) {
766 # Extract %attr...
767 my ($args) = (/(\%attr\s*\(\s*[\d-]+\s*,\s*["a-zA-Z0-9-]+\s*,\s*["a-zA-Z0-9-]+\s*\))/);
768 $args =~ s/\s+//g;
769 $args =~ s/"//g; # don't think quotes are ever necessary, but they're *allowed*
770 # ... and parse it ...
771 ($perms,$owner,$group) = ($args =~ /\(([\d-]+),([a-zA-Z0-9-]+),([a-zA-Z0-9-]+)/);
772 # ... and wipe it when we're done.
773 $filesline =~ s/\%attr\s*\(\s*[\d-]+\s*,\s*["a-zA-Z0-9-]+\s*,\s*["a-zA-Z0-9-]+\s*\)//;
774 }
775
776 # Conffiles. Note that Debian and RH have similar, but not
777 # *quite* identical ideas of what constitutes a conffile. Nrgh.
778 # Note that dpkg will always ask if you want to replace the file - noreplace
779 # is more or less permanently enabled.
780##fixme
781# also need to handle missingok (file that doesn't exist, but should be removed on uninstall)
782# hmm. not sure if such is **POSSIBLE** with Debian... maybe an addition to %post?
783 if ($filesline =~ /\%config\b(?:\s*\(\s*noreplace\s*\)\s*)?/) {
784 $pkgdata{$subname}{conffiles} = 1; # Flag it for later
785 $conf = 'y';
786 $filesline =~ s/\%config\b(?:\s*\(\s*noreplace\s*\)\s*)?//;
787 }
788
789 # %doc needs extra processing, because it can be a space-separated list, and may
790 # include both full and partial pathnames. The partial pathnames must be fiddled
791 # into place in the %install script, because Debian doesn't really have the concept
792 # of "documentation file" that rpm does. (Debian "documentation files" are files
793 # in /usr/share/doc/<packagename>.)
794##fixme: unhandled case: %doc %defattr. Eeep.
795# don't really know what to do with %defattr, generally. :(
796 if ($filesline =~ /\%doc\b/) {
797 $filesline =~ s/\s*\%doc\s+//;
798
799# this could probably go elsewhere.
800 my $pkgname = $pkgdata{$subname}{name};
801 $pkgname =~ tr/_/-/;
802
803 # have to extract the partial pathnames that %doc installs automagically
804 foreach (split /\s+/, $filesline) {
805 if (! (/^\%/ or m|^/|) ) {
806 $doclist{$subname} .= " $_";
807 my ($element) = m|([^/\s]+/?)$|;
808 $filesline =~ s|$_|\%{_docdir}/$pkgname/$element|;
809 }
810 }
811 } # $filesline =~ /\%doc\b/
812
813 $filesline =~ s/^\s*//; # Just In Case. For, uh, neatness.
814
815# due to Debian's total lack of real permissions-processing in its actual package
816# handling component (dpkg-deb), this can't really be done "properly". We'll have
817# to add chown/chmod commands to the postinst instead. Feh.
818 $pkgdata{$subname}{'post'} .= "chown $owner $filesline\n" if $owner ne '-';
819 $pkgdata{$subname}{'post'} .= "chgrp $group $filesline\n" if $group ne '-';
820 $pkgdata{$subname}{'post'} .= "chmod $perms $filesline\n" if $perms ne '-';
821
822##fixme
823# need hackery to assure only one filespec per %config. NB: "*" is one filespec. <g>
824 push @{$pkgdata{$subname}{conflist}}, $filesline if $conf ne '-';
825
826 # now that we've got the specials out of the way, we can add things to the appropriate list of files.
827 # ... and finally everything else
828 $filelist{$subname} .= " $filesline";
829
830 next LINE;
831 } # files
832
833 if ($stage eq 'changelog') {
834 # this is one of the few places we do NOT generally want to replace macros...
835 $pkgdata{main}{changelog} .= $_;
836 }
837
838 if ($stage eq 'preamble') {
839 if (/^summary:\s+(.+)/i) {
840 $pkgdata{main}{summary} = $1;
841 } elsif (/^name:\s+(.+)/i) {
842 $pkgdata{main}{name} = expandmacros($1,'g');
843 } elsif (/^epoch:\s+(.+)/i) {
844 $pkgdata{main}{epoch} = expandmacros($1,'g');
845 } elsif (/^version:\s+(.+)/i) {
846 $pkgdata{main}{version} = expandmacros($1,'g');
847 } elsif (/^release:\s+(.+)/i) {
848 $pkgdata{main}{release} = expandmacros($1,'g');
849 } elsif (/^group:\s+(.+)/i) {
850 $pkgdata{main}{group} = $1;
851 } elsif (/^copyright:\s+(.+)/i) {
852 $pkgdata{main}{copyright} = $1;
853 } elsif (/^url:\s+(.+)/i) {
854 $pkgdata{main}{url} = $1;
855 } elsif (/^packager:\s+(.+)/i) {
856 $pkgdata{main}{packager} = $1;
857 } elsif (/^buildroot:\s+(.+)/i) {
858 $buildroot = $1;
859 } elsif (/^source0?:\s+(.+)/i) {
860 $pkgdata{main}{source} = $1;
861 die "Unknown tarball format $1\n" if $1 !~ /\.tar\.(?:gz|bz2)$/;
862 } elsif (/^source([0-9]+):\s+(.+)/i) {
863 $pkgdata{sources}{$1} = $2;
864 } elsif (/^patch([^:]+):\s+(.+)$/i) {
865 my $patchname = "patch$1";
866 $pkgdata{main}{$patchname} = $2;
867 if ($pkgdata{main}{$patchname} =~ /\//) {
868 # URL-style patch. Rare but not unheard-of.
869 my @patchbits = split '/', $pkgdata{main}{$patchname};
870 $pkgdata{main}{$patchname} = $patchbits[$#patchbits];
871 }
872 chomp $pkgdata{main}{$patchname};
873 } elsif (/^buildarch(?:itecture)?:\s+(.+)/i) {
874 $pkgdata{main}{arch} = $1;
875 $pkgdata{main}{arch} =~ s/^noarch$/all/;
876 $buildarch = $pkgdata{main}{arch};
877 } elsif (/^buildreq(?:uires)?:\s+(.+)/i) {
878 $buildreq .= ", $1";
879 } elsif (/^requires:\s+(.+)/i) {
880 $pkgdata{main}{requires} .= ", ".expandmacros("$1", 'gp');
881 } elsif (/^provides:\s+(.+)/i) {
882 $pkgdata{main}{provides} .= ", $1";
883 } elsif (/^conflicts:\s+(.+)/i) {
884 $pkgdata{main}{conflicts} .= ", $1";
885 } elsif (/^autoreq(?:prov)?:\s+(.+)/i) {
886 # we don't handle auto-provides (yet)
887 $NoAutoReq = 1 if $1 =~ /(?:no|0)/i;
888 }
889 next LINE;
890 } # preamble
891
892 } # while <SPEC>
893
894 # Parse and replace some more macros. More will be replaced even later.
895
896 # Expand macros as necessary.
897 $scriptletbase = expandmacros($scriptletbase,'gp');
898
899 $cleanscript = expandmacros($cleanscript,'gp');
900
901 $buildroot = $cmdbuildroot if $cmdbuildroot;
902 $buildroot = expandmacros($buildroot,'gp');
903
904 close SPECFILE;
905} # end parse_spec()
906
907
908## prep()
909# Writes and executes the %prep script (mostly) built while reading the spec file.
910sub prep {
911 # Replace some things here just to make sure.
912 $prepscript = expandmacros($prepscript,'gp');
913
914 # create script filename
915 my $prepscriptfile = "$tmpdir/deb-tmp.prep.".int(rand(99998)+1);
916 sysopen(PREPSCRIPT, $prepscriptfile, O_RDWR | O_CREAT | O_EXCL | O_NOFOLLOW)
917 or die $!;
918 print PREPSCRIPT $scriptletbase;
919 print PREPSCRIPT $prepscript;
920 close PREPSCRIPT;
921
922 # execute
923 print "Calling \%prep script $prepscriptfile...\n";
924 system("/bin/sh -e $prepscriptfile") == 0
925 or die "Can't exec: $!\n";
926
927 # and clean up
928 unlink $prepscriptfile;
929} # end prep()
930
931
932## build()
933# Writes and executes the %build script (mostly) built while reading the spec file.
934sub build {
935 # Expand the macros
936 $buildscript = expandmacros($buildscript,'cgbp');
937
938 # create script filename
939 my $buildscriptfile = "$tmpdir/deb-tmp.build.".int(rand(99998)+1);
940 sysopen(BUILDSCRIPT, $buildscriptfile, O_RDWR | O_CREAT | O_EXCL | O_NOFOLLOW)
941 or die $!;
942 print BUILDSCRIPT $scriptletbase;
943 print BUILDSCRIPT $buildscript;
944 close BUILDSCRIPT;
945
946 # execute
947 print "Calling \%build script $buildscriptfile...\n";
948 system("/bin/sh -e $buildscriptfile") == 0
949 or die "Can't exec: $!\n";
950
951 # and clean up
952 unlink $buildscriptfile;
953} # end build()
954
955
956## install()
957# Writes and executes the %install script (mostly) built while reading the spec file.
958sub install {
959
960 # munge %doc entries into place
961 # rpm handles this with a separate executed %doc script, we're not going to bother.
962 foreach my $docpkg (keys %doclist) {
963 my $pkgname = $pkgdata{$docpkg}{name};
964 $pkgname =~ s/_/-/g;
965
966 $installscript .= "DOCDIR=\$RPM_BUILD_ROOT\%{_docdir}/$pkgname\nexport DOCDIR\n";
967 $installscript .= "mkdir -p \$DOCDIR\n";
968 $doclist{$docpkg} =~ s/^\s*//;
969 foreach (split(' ',$doclist{$docpkg})) {
970 $installscript .= "cp -pr $_ \$DOCDIR/\n";
971 }
972 }
973
974 # Expand the macros
975 $installscript = expandmacros($installscript,'igbp');
976
977 # create script filename
978 my $installscriptfile = "$tmpdir/deb-tmp.inst.".int(rand(99998)+1);
979 sysopen(INSTSCRIPT, $installscriptfile, O_RDWR | O_CREAT | O_EXCL | O_NOFOLLOW)
980 or die $!;
981 print INSTSCRIPT $scriptletbase;
982 print INSTSCRIPT $installscript;
983 close INSTSCRIPT;
984
985 # execute
986 print "Calling \%install script $installscriptfile...\n";
987 system("/bin/sh -e $installscriptfile") == 0
988 or die "Can't exec: $!\n";
989
990 # and clean up
991 unlink $installscriptfile;
992} # end install()
993
994
995## binpackage()
996# Creates the binary .deb package from the installed tree in $buildroot.
997# Writes and executes a shell script to do so.
998# Creates miscellaneous files required by dpkg-deb to actually build the package file.
999# Should handle simple subpackages
1000sub binpackage {
1001
1002 foreach my $pkg (@pkglist) {
1003
1004 $pkgdata{$pkg}{arch} = $hostarch if !$pkgdata{$pkg}{arch}; # Just In Case.
1005
1006 # Make sure we have somewhere to write the .deb file
1007 if (!-e "$topdir/DEBS/$pkgdata{$pkg}{arch}") {
1008 mkdir "$topdir/DEBS/$pkgdata{$pkg}{arch}";
1009 }
1010
1011 # Skip building a package if it doesn't actually have any files. NB: This
1012 # differs slightly from rpm's behaviour where a package *will* be built -
1013 # even without any files - if %files is specified anywhere. I can think
1014 # of odd corner cases where that *may* be desireable.
1015 next if (!$filelist{$pkg} or $filelist{$pkg} =~ /^\s*$/);
1016
1017 # Gotta do this first, otherwise we don't have a place to move files from %files
1018 mkdir "$buildroot/$pkg";
1019
1020 # Eliminate any lingering % macros
1021 $filelist{$pkg} = expandmacros $filelist{$pkg}, 'g';
1022
1023 my @pkgfilelist = split ' ', $filelist{$pkg};
1024 foreach my $pkgfile (@pkgfilelist) {
1025 $pkgfile = expandmacros($pkgfile, 'gp');
1026
1027 # Feh. Manpages don't **NEED** to be gzipped, but rpmbuild does, and so shall we.
1028 if ($pkgfile =~ m|/usr/share/man/man|) {
1029 # need to check to see if manpage is gzipped
1030 if (-e "$buildroot$pkgfile") {
1031 if ($pkgfile !~ m|\.gz$|) {
1032 qx { gzip $buildroot$pkgfile };
1033 $pkgfile .= ".gz";
1034 }
1035 } else {
1036 if ($pkgfile !~ m|\.gz$|) {
1037 $pkgfile .= ".gz";
1038 } else {
1039 $pkgfile =~ s/\.gz$//;
1040 qx { gzip $buildroot$pkgfile };
1041 $pkgfile .= ".gz";
1042 }
1043 }
1044 }
1045
1046 my ($fpath,$fname) = ($pkgfile =~ m|(.+?/?)?([^/]+/?)$|); # We don't need $fname now, but we might.
1047 qx { mkdir -p $buildroot/$pkg$fpath }
1048 if $fpath && $fpath ne '';
1049 qx { mv $buildroot$pkgfile $buildroot/$pkg$fpath };
1050 }
1051
1052 # Get the "Depends" (Requires) a la RPM. Ish. We strip the leading
1053 # comma and space here (if needed) in case there were "Requires" specified
1054 # in the spec file - those would precede these.
1055 $pkgdata{$pkg}{requires} .= getreqs("$buildroot/$pkg") if ! $NoAutoReq;
1056
1057 # magic needed to properly version dependencies...
1058 # only provided deps will really be included
1059 $pkgdata{$pkg}{requires} =~ s/^, //; # Still have to do this here.
1060 $pkgdata{$pkg}{requires} =~ s/\s+//g;
1061 my @deps = split /,/, $pkgdata{$pkg}{requires};
1062 my $tmp = '';
1063 foreach my $dep (@deps) {
1064 # Hack up the perl(Class::SubClass) deps into something dpkg can understand.
1065 # May or may not be versioned.
1066 # We do this first so the version rewriter can do its magic next.
1067 if (my ($mod,$ver) = ($dep =~ /^perl\(([A-Za-z0-9\:\-]+)\)([><=]+.+)?/) ) {
1068 $mod =~ s/^perl\(//;
1069 $mod =~ s/\)$//;
1070 $mod =~ s/::/-/g;
1071 $mod =~ tr/A-Z/a-z/;
1072 $mod = "lib$mod-perl";
1073 $mod .= $ver if $ver;
1074 $dep = $mod;
1075 }
1076 if (my ($name,$rel,$value) = ($dep =~ /^([a-zA-Z0-9._-]+)([><=]+)([a-zA-Z0-9._-]+)$/)) {
1077 $tmp .= ", $name ($rel $value)";
1078 } else {
1079 $tmp .= ", $dep";
1080 }
1081 }
1082 ($pkgdata{$pkg}{requires} = $tmp) =~ s/^, //;
1083
1084 # Do this here since we're doing {depends}...
1085 if (defined($pkgdata{$pkg}{provides})) {
1086 $pkgdata{$pkg}{provides} =~ s/^, //;
1087 $pkgdata{$pkg}{provides} = expandmacros($pkgdata{$pkg}{provides},'gp');
1088 }
1089 if (defined($pkgdata{$pkg}{conflicts})) {
1090 $pkgdata{$pkg}{conflicts} =~ s/^, //;
1091 $pkgdata{$pkg}{conflicts} = expandmacros($pkgdata{$pkg}{conflicts},'gp');
1092 }
1093
1094 # Gotta do this next, otherwise the control file has nowhere to go. >:(
1095 mkdir "$buildroot/$pkg/DEBIAN";
1096
1097 # Hack the filename for the package into a Debian-tool-compatible format. GRRRRRR!!!!!
1098 # Have I mentioned I hate Debian Policy?
1099 $pkgdata{$pkg}{name} =~ tr/_/-/;
1100
1101 # create script filename
1102 my $debscriptfile = "$tmpdir/deb-tmp.pkg.".int(rand(99998)+1);
1103 sysopen(DEBSCRIPT, $debscriptfile, O_RDWR | O_CREAT | O_EXCL | O_NOFOLLOW)
1104 or die $!;
1105 print DEBSCRIPT $scriptletbase;
1106 print DEBSCRIPT "fakeroot dpkg-deb -b $buildroot/$pkg $topdir/DEBS/$pkgdata{$pkg}{arch}/".
1107 "$pkgdata{$pkg}{name}_".
1108 (defined($pkgdata{main}{epoch}) ? "$pkgdata{main}{epoch}:" : '').
1109 "$pkgdata{$pkg}{version}-$pkgdata{main}{release}_$pkgdata{$pkg}{arch}.deb\n";
1110 # %$&$%@#@@#%@@@ Debian and their horrible ugly package names. >:(
1111 close DEBSCRIPT;
1112
1113 my $control = "Package: $pkgdata{$pkg}{name}\n".
1114 "Version: ".
1115 (defined($pkgdata{main}{epoch}) ? "$pkgdata{main}{epoch}:" : '').
1116 "$pkgdata{$pkg}{version}-$pkgdata{main}{release}\n".
1117 "Section: $pkgdata{$pkg}{group}\n".
1118 "Priority: optional\n".
1119 "Architecture: $pkgdata{$pkg}{arch}\n".
1120 "Maintainer: $pkgdata{main}{packager}\n".
1121 ( $pkgdata{$pkg}{requires} ne '' ? "Depends: $pkgdata{$pkg}{requires}\n" : '' ).
1122 ( defined($pkgdata{$pkg}{provides}) ? "Provides: $pkgdata{$pkg}{provides}\n" : '' ).
1123 ( defined($pkgdata{$pkg}{conflicts}) ? "Conflicts: $pkgdata{$pkg}{conflicts}\n" : '' ).
1124 "Description: $pkgdata{$pkg}{summary}\n";
1125 $control .= "$pkgdata{$pkg}{desc}\n";
1126
1127 open CONTROL, ">$buildroot/$pkg/DEBIAN/control";
1128 print CONTROL $control;
1129 close CONTROL;
1130
1131 # Iff there are conffiles (as specified in the %files list(s), add'em
1132 # in so dpkg-deb can tag them.
1133 if ($pkgdata{$pkg}{conffiles}) {
1134 open CONFLIST, ">$buildroot/$pkg/DEBIAN/conffiles";
1135 foreach my $conffile (@{$pkgdata{$pkg}{conflist}}) {
1136 $conffile = expandmacros($conffile, 'g');
1137 my @tmp = glob "$buildroot/$pkg/$conffile";
1138 foreach (@tmp) {
1139 s|$buildroot/$pkg/||g; # nrgl. gotta be a better way to do this...
1140 s/\s+/\n/g; # Not gonna support spaces in filenames. Ewww.
1141 print CONFLIST "$_\n";
1142 }
1143 }
1144 close CONFLIST;
1145 }
1146
1147 # found the point of scripts on subpackages.
1148 if ($pkgdata{$pkg}{'pre'}) {
1149 $pkgdata{$pkg}{'pre'} = expandmacros($pkgdata{$pkg}{'pre'},'gp');
1150 open PREINST, ">$buildroot/$pkg/DEBIAN/preinst";
1151 print PREINST "#!/bin/sh\nset -e\n\n";
1152 print PREINST $pkgdata{$pkg}{'pre'};
1153 close PREINST;
1154 `chmod 0755 $buildroot/$pkg/DEBIAN/preinst`;
1155 }
1156 if ($pkgdata{$pkg}{'post'}) {
1157 $pkgdata{$pkg}{'post'} = expandmacros($pkgdata{$pkg}{'post'},'gp');
1158 open PREINST, ">$buildroot/$pkg/DEBIAN/postinst";
1159 print PREINST "#!/bin/sh\nset -e\n\n";
1160 print PREINST $pkgdata{$pkg}{'post'};
1161 close PREINST;
1162 `chmod 0755 $buildroot/$pkg/DEBIAN/postinst`;
1163 }
1164 if ($pkgdata{$pkg}{'preun'}) {
1165 $pkgdata{$pkg}{'pre'} = expandmacros($pkgdata{$pkg}{'preun'},'gp');
1166 open PREINST, ">$buildroot/$pkg/DEBIAN/prerm";
1167 print PREINST "#!/bin/sh\nset -e\n\n";
1168 print PREINST $pkgdata{$pkg}{'preun'};
1169 close PREINST;
1170 `chmod 0755 $buildroot/$pkg/DEBIAN/prerm`;
1171 }
1172 if ($pkgdata{$pkg}{'postun'}) {
1173 $pkgdata{$pkg}{'postun'} = expandmacros($pkgdata{$pkg}{'postun'},'gp');
1174 open PREINST, ">$buildroot/$pkg/DEBIAN/postrm";
1175 print PREINST "#!/bin/sh\nset -e\n\n";
1176 print PREINST $pkgdata{$pkg}{'postun'};
1177 close PREINST;
1178 `chmod 0755 $buildroot/$pkg/DEBIAN/postrm`;
1179 }
1180
1181 # execute
1182 print "Calling package creation script $debscriptfile for $pkgdata{$pkg}{name}...\n";
1183 system("/bin/sh -e $debscriptfile") == 0
1184 or die "Can't exec: $!\n";
1185
1186 $finalmessages .= "Wrote binary package ".
1187 "$pkgdata{$pkg}{name}_".
1188 (defined($pkgdata{main}{epoch}) ? "$pkgdata{main}{epoch}:" : '').
1189 "$pkgdata{$pkg}{version}-$pkgdata{main}{release}_$pkgdata{$pkg}{arch}.deb".
1190 " in $topdir/DEBS/$pkgdata{$pkg}{arch}\n";
1191 # and clean up
1192 unlink $debscriptfile;
1193
1194 } # subpackage loop
1195
1196} # end binpackage()
1197
1198
1199## srcpackage()
1200# Builds a .src.deb source package. Note that Debian's idea of
1201# a "source package" is seriously flawed IMO, because you can't
1202# easily copy it as-is.
1203# Not quite identical to RPM, but Good Enough (TM).
1204sub srcpackage {
1205 # In case we were called with -bs.
1206 $pkgdata{main}{name} =~ tr/_/-/;
1207 my $pkgsrcname = "$pkgdata{main}{name}-".
1208 (defined($pkgdata{main}{epoch}) ? "$pkgdata{main}{epoch}:" : '').
1209 "$pkgdata{main}{version}-$pkgdata{main}{release}.sdeb";
1210
1211 my $paxcmd;
1212
1213 # We'll definitely need this later, and *may* need it sooner.
1214 (my $barespec = $specfile) =~ s|.+/([^/]+)$|$1|;
1215
1216 # Copy the specfile to the build tree, but only if it's not there already.
1217##buglet: need to deal with silly case where silly user has put the spec
1218# file in a subdir of %{_topdir}/SPECS. Ewww. Silly user!
1219 if (abs_path($specfile) !~ /^$topdir\/SPECS/) {
1220 $paxcmd .= "cp $specfile %{_topdir}/SPECS/; \n"
1221 }
1222
1223 # use pax -w [file] [file] ... >outfile.sdeb
1224 $paxcmd = "cd $topdir; pax -w ";
1225
1226# tweak source entry into usable form. Need it locally somewhere along the line.
1227 (my $pkgsrc = $pkgdata{main}{source}) =~ s|.+/([^/]+)$|$1|;
1228 $paxcmd .= "SOURCES/$pkgsrc ";
1229
1230 # create file list: Source[nn], Patch[nn]
1231 foreach my $specbit (keys %{$pkgdata{main}} ) {
1232 next if $specbit eq 'source';
1233 $paxcmd .= "SOURCES/$pkgdata{main}{$specbit} " if $specbit =~ /^patch/;
1234##buglet: need to deal with case where patches are listed as URLs?
1235# or other extended pathnames? Silly !@$%^&!%%!%!! user!
1236 }
1237
1238 foreach my $source (keys %{$pkgdata{sources}}) {
1239 $paxcmd .= "SOURCES/$pkgdata{sources}{$source} ";
1240 }
1241
1242 # add the spec file, source package destination, and cd back where we came from.
1243 $paxcmd .= "SPECS/$barespec > $topdir/SDEBS/$pkgsrcname; cd -";
1244
1245 # In case of %-macros...
1246 $paxcmd = expandmacros($paxcmd,'gp');
1247
1248 system "$paxcmd";
1249 $finalmessages .= "Wrote source package $pkgsrcname in $topdir/SDEBS.\n";
1250} # end srcpackage()
1251
1252
1253## clean()
1254# Writes and executes the %clean script (mostly) built while reading the spec file.
1255sub clean {
1256 # Replace some things here just to make sure.
1257 $cleanscript = expandmacros($cleanscript,'gp');
1258
1259 # create script filename
1260 my $cleanscriptfile = "$tmpdir/deb-tmp.clean.".int(rand(99998)+1);
1261 sysopen(CLEANSCRIPT, $cleanscriptfile, O_RDWR | O_CREAT | O_EXCL | O_NOFOLLOW)
1262 or die $!;
1263 print CLEANSCRIPT $scriptletbase;
1264 print CLEANSCRIPT $cleanscript;
1265 close CLEANSCRIPT;
1266
1267 # execute
1268 print "Calling \%clean script $cleanscriptfile...\n";
1269 system("/bin/sh -e $cleanscriptfile") == 0
1270 or die "Can't exec: $!\n";
1271
1272 # and clean up
1273 unlink $cleanscriptfile;
1274} # end clean()
1275
1276
1277## checkbuildreq()
1278# Checks the build requirements (if any)
1279# Spits out a rude warning and returns a true-false error if any
1280# requirements are not met.
1281sub checkbuildreq {
1282 return 1 if $buildreq eq ''; # No use doing extra work.
1283
1284 if ( ! -e "/usr/bin/dpkg-query" ) {
1285 print "**WARNING** dpkg-query not found. Can't check build-deps.\n".
1286 " Required for sucessful build:\n".$buildreq."\n".
1287 " Continuing anyway.\n";
1288 return 1;
1289 }
1290
1291 my $reqflag = 1; # unset iff a buildreq is missing
1292
1293 $buildreq =~ s/^, //; # Strip the leading comma and space
1294 my @reqlist = split /,\s+/, $buildreq;
1295
1296 foreach my $req (@reqlist) {
1297 my ($pkg,$rel,$ver);
1298
1299 # We have two classes of requirements - versioned and unversioned.
1300 if ($req =~ /[><=]/) {
1301 # Pick up the details of versioned buildreqs
1302 ($pkg,$rel,$ver) = ($req =~ /([a-z0-9._-]+)\s+([><=]+)\s+([a-z0-9._-]+)/);
1303 } else {
1304 # And the unversioned ones.
1305 $pkg = $req;
1306 $rel = '>=';
1307 $ver = 0;
1308 }
1309
1310 my @pkglist = qx { dpkg-query --showformat '\${status}\t\${version}\n' -W $pkg };
1311# need to check if no lines returned - means a bad buildreq
1312 my ($reqstat,undef,undef,$reqver) = split /\s+/, $pkglist[0];
1313 if ($reqstat !~ /install/) {
1314 print " * Missing build-dependency $pkg!\n";
1315 $reqflag = 0;
1316 } else {
1317# gotta be a better way to do this... :/
1318 if ($rel eq '>=' && !($reqver ge $ver)) {
1319 print " * Buildreq $pkg is installed, but wrong version ($reqver): Need $ver\n";
1320 $reqflag = 0;
1321 }
1322 if ($rel eq '>' && !($reqver gt $ver)) {
1323 print " * Buildreq $pkg is installed, but wrong version ($reqver): Need $ver\n";
1324 $reqflag = 0;
1325 }
1326 if ($rel eq '<=' && !($reqver le $ver)) {
1327 print " * Buildreq $pkg is installed, but wrong version ($reqver): Need $ver\n";
1328 $reqflag = 0;
1329 }
1330 if ($rel eq '<' && !($reqver lt $ver)) {
1331 print " * Buildreq $pkg is installed, but wrong version ($reqver): Need $ver\n";
1332 $reqflag = 0;
1333 }
1334 if ($rel eq '=' && !($reqver eq $ver)) {
1335 print " * Buildreq $pkg is installed, but wrong version ($reqver): Need $ver\n";
1336 $reqflag = 0;
1337 }
1338 } # end not installed/installed check
1339 } # end req loop
1340
1341 return $reqflag;
1342} # end checkbuildreq()
1343
1344
1345## getreqs()
1346# Find out which libraries/packages are required for any
1347# executables and libs in a given file tree.
1348# (Debian doesn't have soname-level deps; just package-level)
1349# Returns an empty string if the tree contains no binaries.
1350# Doesn't work well on shell scripts. but those *should* be
1351# fine anyway. (Yeah, right...)
1352sub getreqs() {
1353 my $pkgtree = $_[0];
1354
1355 print "Checking library requirements...\n";
1356 my @binlist = qx { find $pkgtree -type f -perm 755 };
1357
1358 if (scalar(@binlist) == 0) {
1359 return '';
1360 }
1361
1362 my @reqlist;
1363 foreach (@binlist) {
1364 push @reqlist, qx { ldd $_ };
1365 }
1366
1367 # Get the list of libs provided by this package. Still doesn't
1368 # handle the case where the lib gets stuffed into a subpackage. :/
1369 my @intprovlist = qx { find $pkgtree -type f -name "*.so*" };
1370 my $provlist = '';
1371 foreach (@intprovlist) {
1372 s/$pkgtree//;
1373 $provlist .= "$_";
1374 }
1375
1376 my %reqs;
1377 my $reqlibs = '';
1378
1379 foreach (@reqlist) {
1380 next if /^$pkgtree/;
1381 next if /not a dynamic executable/;
1382 next if m|/lib/ld-linux.so|; # Hack! Hack! PTHBTT! (libc suxx0rz)
1383 next if /linux-gate.so/; # Kernel hackery for teh W1n!!1!1eleventy-one!1 (Don't ask. Feh.)
1384
1385 my ($req) = (/^\s+([a-z0-9._-]+)/); # dig out the actual library (so)name
1386
1387 # Ignore libs provided by this package. Note that we don't match
1388 # on word-boundary at the *end* of the lib we're looking for, as the
1389 # looked-for lib may not have the full soname version. (ie, it may
1390 # "just" point to one of the symlinks that get created somewhere.)
1391 next if $provlist =~ /\b$req/;
1392
1393 $reqlibs .= " $req";
1394 }
1395
1396 if ($reqlibs ne '') {
1397 foreach (qx { dpkg -S $reqlibs }) {
1398 my ($libpkg,undef) = split /:\s+/;
1399 $reqs{$libpkg} = 1;
1400 }
1401 }
1402
1403 my $deplist = '';
1404 foreach (keys %reqs) {
1405 $deplist .= ", $_";
1406 }
1407
1408# For now, we're done. We're not going to meddle with versions yet.
1409# Among other things, it's messier than handling "simple" yes/no "do
1410# we have this lib?" deps. >:(
1411
1412 return $deplist;
1413} # end getreqs()
1414
1415
1416## install_sdeb()
1417# Extracts .sdeb contents to %_topdir as appropriate
1418sub install_sdeb {
1419 $srcpkg = abs_path($srcpkg);
1420
1421 my $paxcmd = "cd $topdir; pax -r <$srcpkg; cd -";
1422
1423 # In case of %-macros...
1424 $paxcmd = expandmacros($paxcmd,'gp');
1425
1426 system "$paxcmd";
1427 print "Extracted source package $srcpkg to $topdir.\n";
1428} # end install_sdeb()
1429
1430
1431## expandmacros()
1432# Expands all %{blah} macros in the passed string
1433# Split up a bit with some sections so we don't spend time trying to
1434# expand macros that are only used in a few specific places.
1435sub expandmacros {
1436 my $macrostring = shift;
1437 my $section = shift;
1438
1439 # To allow the FHS-ish %configure and %makeinstall to work The Right Way.
1440 # (Without clobbering the global $buildroot.)
1441 my $prefix = '';
1442
1443 if ($section =~ /c/) {
1444 # %configure macro
1445# Don't know what it's for, don't have a useful default replacement
1446# --program-prefix=%{_program_prefix} \
1447 $macrostring =~ s'%configure'./configure --host=$DEB_HOST_GNU_TYPE \
1448 --build=$DEB_BUILD_GNU_TYPE \
1449 --prefix=%{_prefix} \
1450 --exec-prefix=%{_exec_prefix} \
1451 --bindir=%{_bindir} \
1452 --sbindir=%{_sbindir} \
1453 --sysconfdir=%{_sysconfdir} \
1454 --datadir=%{_datadir} \
1455 --includedir=%{_includedir} \
1456 --libdir=%{_libdir} \
1457 --libexecdir=%{_libexecdir} \
1458 --localstatedir=%{_localstatedir} \
1459 --sharedstatedir=%{_sharedstatedir} \
1460 --mandir=%{_mandir} \
1461 --infodir=%{_infodir} ';
1462 } # done %configure
1463
1464 if ($section =~ /m/) {
1465 $macrostring =~ s'%{__make}'make ';
1466 } # done make
1467
1468 if ($section =~ /i/) {
1469 # This is where we need to mangle $prefix.
1470 $macrostring =~ s'%makeinstall'make %{fhs} install';
1471 $prefix = $buildroot;
1472 } # done %install and/or %makeinstall
1473
1474 # Build data
1475 # Note that these are processed in reverse order to get the substitution order right
1476 if ($section =~ /b/) {
1477# $macrostring =~ s'%{fhs}'host=$DEB_HOST_GNU_TYPE \
1478# build=$DEB_BUILD_GNU_TYPE \
1479 $macrostring =~ s'%{fhs}'prefix=%{_prefix} \
1480 exec-prefix=%{_exec_prefix} \
1481 bindir=%{_bindir} \
1482 sbindir=%{_sbindir} \
1483 sysconfdir=%{_sysconfdir} \
1484 datadir=%{_datadir} \
1485 includedir=%{_includedir} \
1486 libdir=%{_libdir} \
1487 libexecdir=%{_libexecdir} \
1488 localstatedir=%{_localstatedir} \
1489 sharedstatedir=%{_sharedstatedir} \
1490 mandir=%{_mandir} \
1491 infodir=%{_infodir} \
1492';
1493
1494 # Note that the above regex terminates with the extra space
1495 # "Just In Case" of user additions, which will then get neatly
1496 # tagged on the end where they take precedence (supposedly)
1497 # over the "default" ones.
1498
1499 # Now we cascade the macros introduced above. >_<
1500 # Wot ot to go theah:
1501 $macrostring =~ s|%{_mandir}|%{_datadir}/man|g; #/usr/share/man
1502 $macrostring =~ s|%{_infodir}|%{_datadir}/info|g; #/usr/share/info
1503 $macrostring =~ s|%{_oldincludedir}|/usr/include|g; #/usr/include
1504 $macrostring =~ s|%{_includedir}|%{_prefix}/include|g; #/usr/include
1505 $macrostring =~ s|%{_libdir}|%{_exec_prefix}/%{_lib}|g; #/usr/lib
1506 $macrostring =~ s|%{_lib}|lib|g; #?
1507 $macrostring =~ s|%{_localstatedir}|/var|g; #/var
1508 $macrostring =~ s|%{_sharedstatedir}|%{_prefix}/com|g; #/usr/com WTF?
1509 $macrostring =~ s|%{_sysconfdir}|/etc|g; #/etc
1510 $macrostring =~ s|%{_datadir}|%{_prefix}/share|g; #/usr/share
1511 $macrostring =~ s|%{_libexecdir}|%{_exec_prefix}/libexec|g; #/usr/libexec
1512 $macrostring =~ s|%{_sbindir}|%{_exec_prefix}/sbin|g; #/usr/sbin
1513 $macrostring =~ s|%{_bindir}|%{_exec_prefix}/bin|g; #/usr/bin
1514 $macrostring =~ s|%{_exec_prefix}|%{_prefix}|g; #/usr
1515 $macrostring =~ s|%{_prefix}|/usr|g; #/usr
1516 } # done with config section
1517
1518 # Package data
1519 if ($section =~ /p/) {
1520 $macrostring =~ s/\%\{buildroot\}/$buildroot/gi;
1521 foreach my $source (keys %{$pkgdata{sources}}) {
1522 $macrostring =~ s/\%\{source$source\}/$topdir\/SOURCES\/$pkgdata{sources}{$source}/gi;
1523 }
1524 $macrostring =~ s/\%\{name\}/$pkgdata{main}{name}/gi;
1525 $macrostring =~ s/\%\{version\}/$pkgdata{main}{version}/gi;
1526 $macrostring =~ s/\%\{release\}/$pkgdata{main}{release}/gi;
1527 }
1528
1529 # Globals, and not-so-globals
1530 if ($section =~ /g/) {
1531
1532 $macrostring =~ s|%{_builddir}|%{_topdir}/BUILD|g;
1533 $macrostring =~ s|%{_topdir}|$topdir|g;
1534 $macrostring =~ s|%{_tmppath}|$tmpdir|g;
1535 $macrostring =~ s'%{_docdir}'%{_datadir}/doc'g;
1536
1537 # Standard FHS locations. More or less.
1538 $macrostring =~ s'%{_bindir}'/usr/bin'g;
1539 $macrostring =~ s'%{_sbindir}'/usr/sbin'g;
1540 $macrostring =~ s'%{_mandir}'%{_datadir}/man'g;
1541 $macrostring =~ s'%{_includedir}'/usr/include'g;
1542 $macrostring =~ s'%{_libdir}'/usr/lib'g;
1543 $macrostring =~ s'%{_sysconfdir}'/etc'g;
1544 $macrostring =~ s'%{_localstatedir}'/var'g;
1545
1546 # FHS-ish locations that aren't quite actually FHS-specified.
1547 $macrostring =~ s'%{_datadir}'/usr/share'g;
1548
1549 # special %define's. Handle the general case where we eval anything.
1550 # Even more general: %(...) is a spec-parse-time shell code wrapper.
1551 # Prime example:
1552 #%define perl_vendorlib %(eval "`perl -V:installvendorlib`"; echo $installvendorlib)
1553 if ($macrostring =~ /\%\((.+)\)/) {
1554 my $shellstr = $1;
1555 # Oy vey this gets silly for the perl bits. Executing a shell to
1556 # call Perl to get the vendorlib/sitelib/whatever "core" globals.
1557 # This can do more, but... eww.
1558 $shellstr = qx { /bin/sh -c '$shellstr' }; # Yay! ' characters apparently get properly exscapededed.
1559 $macrostring =~ s/\%\(.+\)/$shellstr/;
1560 }
1561
1562 # support for **some** %if constructs. Note that this breaks somewhat if
1563 # there's no value specified... but so does rpm.
1564my $tmpcount = 0;
1565 while ($macrostring =~ /\%\{(!\?|\?!|\?)([a-z0-9_.-]+)(?:\:([a-z0-9_.-]+))?\}/g) { #Whew....
1566 my $qex = $1;
1567 my $macro = $2;
1568 my $value = $3;
1569
1570 my $neg = '1' if $qex =~ /\!/;
1571 if ($specglobals{$macro}) {
1572 $value = '' if $neg;
1573 } else {
1574 $value = '' if !$neg;
1575 }
1576 $macrostring =~ s/\%\{!?\?\!?[a-z0-9_.-]+(?:\:[a-z0-9_.-]+)?\}/$value/;
1577
1578# not certain about this, but I don't want to run away. It *can* happen if planned carefully. :/
1579$tmpcount++;
1580die "excessive recursive macro replacement; dying.\n" if $tmpcount > 6;
1581
1582 } # while()
1583
1584 # Misc expansions
1585 $macrostring =~ s|%{_arch}|$hostarch|g;
1586 $macrostring =~ s|%{optflags}|$optflags{$hostarch}|g;
1587 $macrostring =~ s|%{_vendor}|$specglobals{'_vendor'}|g;
1588
1589# should probably stick a "no runaway" flag in here... Just In Case...
1590 # %define's
1591 while (my ($key) = ($macrostring =~ /%{([a-z0-9]+)}/i) ) {
1592# hrm. This needs thinking.
1593#die "A horrible death! \%{$key}, '$macrostring'\n" if !$specglobals{$key};
1594 $macrostring =~ s|%{$key}|$specglobals{$key}|g;
1595 # wanna limit this to "... if $specglobals{$key}", but need more magic
1596 }
1597
1598 # system programs. RPM uses a global config file for these; we'll just
1599 # ASS-U-ME and make life a little simpler.
1600 if ($macrostring =~ /\%\{\_\_([a-z0-9_-]+)\}/) {
1601 $macrostring =~ s|%{__([a-z0-9_-]+)}|$1|g;
1602 }
1603
1604 # Perl @INC/...lib locations, and other related bits.
1605 $macrostring =~ s|%{perl_archlib}|$Config{installarchlib}|g;
1606 $macrostring =~ s|%{perl_sitelib}|$Config{installsitelib}|g;
1607 $macrostring =~ s|%{perl_sitearch}|$Config{installsitearch}|g;
1608 $macrostring =~ s|%{perl_vendorlib}|$Config{installvendorlib}|g;
1609 $macrostring =~ s|%{perl_vendorarch}|$Config{installvendorarch}|g;
1610
1611 } # done with globals section
1612
1613 return $macrostring;
1614} # end expandmacros()
1615
1616
1617
1618__END__
1619
1620
1621
1622=head1 NAME
1623
1624debbuild - Build Debian-compatible packages from RPM spec files
1625
1626=head1 SYNOPSIS
1627
1628 debbuild {-ba|-bb|-bp|-bc|-bi|-bl|-bs} [build-options] file.spec
1629
1630 debbuild {-ta|-tb|-tp|-tc|-ti|-tl|-ts} [build-options] file.tar.{gz|bz2}
1631
1632 debbuild --rebuild file.{src.rpm|sdeb}
1633
1634 debbuild --showpkgs
1635
1636=head1 DESCRIPTION
1637
1638This script attempts to build Debian-friendly semi-native packages from RPM spec files,
1639RPM-friendly tarballs, and RPM source packages (.src.rpm files). It accepts I<most> of the
1640options rpmbuild does, and should be able to interpret most spec files usefully. Perl
1641modules should be handled via CPAN+dh-make-perl instead; Debian's conventions for such
1642things do not lend themselves to automated conversion.
1643
1644As far as possible, the command-line options are identical to those from rpmbuild, although
1645several rpmbuild options are not supported:
1646
1647 --recompile
1648 --showrc
1649 --buildroot
1650 --clean
1651 --nobuild
1652 --rmsource
1653 --rmspec
1654 --sign
1655 --target
1656
1657Some of these could probably be trivially added. Feel free to send me a patch. ;)
1658
1659Complex spec files will most likely not work well, if at all. Rewrite them from scratch -
1660you'll have to make heavy modifications anyway.
1661
1662If you see something you don't like, mail me. Send a patch if you feel inspired. I don't
1663promise I'll do anything other than say "Yup, that's broken" or "Got your message".
1664
1665=head1 ASSUMPTIONS
1666
1667As with rpmbuild, debbuild makes some assumptions about your system.
1668
1669=over 4
1670
1671=item *
1672
1673Either you have rights to do as you please under /usr/src/debian, or you have created a file
1674~/.debmacros containing a suitable %_topdir definition.
1675
1676Both rpmbuild and debbuild require the directories %_topdir/{BUILD,SOURCES,SPECS}. However,
1677where rpmbuild requires the %_topdir/{RPMS,SRPMS} directories, debbuild
1678requires %_topdir/{DEBS,SDEBS} instead. Create them in advance;
1679some subdirectories are created automatically as needed, but most are not.
1680
1681=item *
1682
1683/var/tmp must allow script execution - rpmbuild and debbuild both rely on creating and
1684executing shell scripts for much of their functionality. By default, debbuild also creates
1685install trees under /var/tmp - however this is (almost) entirely under the control of the
1686package's .spec file.
1687
1688=item *
1689
1690If you wish to --rebuild a .src.rpm, your %_topdir for both debbuild and rpmbuild must either
1691match, or be suitably symlinked one direction or another so that both programs are effectively
1692working in the same tree. (Or you could just manually wrestle files around your system.)
1693
1694You could symlink ~/.rpmmacros to ~/.debmacros (or vice versa) and save yourself some hassle
1695if you need to rebuild .src.rpm packages on a regular basis. Currently debbuild only uses the
1696%_topdir macro definition, although there are many more things that rpmbuild can use from
1697~/.rpmmacros.
1698
1699=back
1700
1701=head1 ERRATA
1702
1703debbuild deliberately does a few things differently from rpm.
1704
1705=head2 BuildArch or BuildArchitecture
1706
1707rpm takes the last BuildArch entry it finds in the .spec file, whatever it is, and runs with
1708that for all packages. Debian's repository system is fairly heavily designed around the
1709assumption that a single source package may generate small binary (executable) packages
1710for each arch, and large binary arch-all packages containing shared data.
1711
1712debbuild allows this by using the architecture specified by (in order of preference):
1713
1714=over 4
1715
1716=item * Host architecture
1717
1718=item * BuildArch specified in .spec file preamble
1719
1720=item * "Last specified" BuildArch for packages with several subpackages
1721
1722=item * BuildArch specified in the %package section for that subpackage
1723
1724=back
1725
1726=head2 Finding out what packages should be built (--showpkgs)
1727
1728rpmbuild does not include any convenient method I know of to list the packages a spec file
1729will produce. Since I needed this ability for another tool, I added it.
1730
1731It requires the .spec file for the package, and produces a list of full package filenames
1732(without path data) that would be generated by one of --rebuild, -ta, -tb, -ba, or -bb.
1733This includes the .sdeb source package.
1734
1735=head1 AUTHOR
1736
1737debbuild was written by Kris Deugau <kdeugau@deepnet.cx>. A version that approximates
1738current is available at http://www.deepnet.cx/debbuild/.
1739
1740=head1 BUGS
1741
1742Funky Things Happen if you forget a command-line option or two. I've been too lazy to bother
1743fixing this.
1744
1745Many macro expansions are unsupported or incompletely supported.
1746
1747The generated scriptlets don't quite match those from rpmbuild exactly. There are extra
1748environment variables and preprocessing that I haven't needed (yet).
1749
1750Dcumentation, such as it is, will likely remain perpetually out of date.
1751
1752%_topdir and the five "working" directories under %_topdir could arguably be created by
1753debbuild. However, rpmbuild doesn't create these directories either.
1754
1755=head1 SEE ALSO
1756
1757rpm(8), rpmbuild(8), and pretty much any document describing how to write a .spec file.
1758
1759=cut
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