X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=dh;h=35fedbb02b9892ec8510d440d9f9d9a8eb7f6c69;hb=4a692f55a0e9d9c579281f1c2002036436b2b367;hp=330b015215df09453b961d6d7af45b1e45add386;hpb=4f8a46b36e961d1a64d466a63f3a7ef6c90bafe2;p=debhelper.git diff --git a/dh b/dh index 330b015..36130f8 100755 --- a/dh +++ b/dh @@ -11,85 +11,65 @@ use Debian::Debhelper::Dh_Lib; =head1 SYNOPSIS -B sequence [B<--until> I] [B<--before> I] [B<--after> I] [B<--remaining> [S>] +B I [B<--with> I[B<,>I ...]] [B<--list>] [S>] =head1 DESCRIPTION -dh runs a sequence of debhelper commands. The supported sequences -correspond to the targets of a debian/rules file: "build", "clean", -"install", "binary-arch", "binary-indep", and "binary". +B runs a sequence of debhelper commands. The supported Is +correspond to the targets of a F file: B, +B, B, B, B, B, +B, B, B, and B. -Commands in the binary-indep sequence are passed the "-i" option to ensure -they only work on binary independent packages, and commands in the -binary-arch sequences are passed the "-a" option to ensure they only work -on architecture dependent packages. +=head1 OVERRIDE TARGETS -Options passed to dh are passed on to each command it runs. This can be -used to set an option like "-v" or "-X" or "-N", as well as for more -specialised options. +A F file using B can override the command that is run +at any step in a sequence, by defining an override target. -Each debhelper command will record when it's successfully run in -debian/package.debhelper.log. (Which dh_clean deletes.) So dh can tell -which commands have already been run, for which packages, and skip running -those commands again. +To override I, add a target named BI to +the rules file. When it would normally run I, B will +instead call that target. The override target can then run the command with +additional options, or run entirely different commands instead. See +examples below. +(Note that to use this feature, you should Build-Depend on +debhelper 7.0.50 or above.) -Each time dh is run, it examines the log, and finds the last logged command -that is in the specified sequence. It then continues with the next command -in the sequence. The B<--until>, B<--before>, B<--after>, and B<--remaining> -options can override this behavior. +Override targets can also be defined to run only when building +architecture dependent or architecture independent packages. +Use targets with names like BIB<-arch> +and BIB<-indep>. +(Note that to use this feature, you should Build-Depend on +debhelper 8.9.7 or above.) =head1 OPTIONS =over 4 -=item B<--until> I - -Run commands in the sequence until and including I, then stop. +=item B<--with> I[B<,>I ...] -=item B<--before> I +Add the debhelper commands specified by the given addon to appropriate places +in the sequence of commands that is run. This option can be repeated more +than once, or multiple addons can be listed, separated by commas. +This is used when there is a third-party package that provides +debhelper commands. See the F file for documentation about +the sequence addon interface. -Run commands in the sequence before I, then stop. +=item B<--without> I -=item B<--after> I +The inverse of B<--with>, disables using the given addon. -Run commands in the sequence that come after I. +=item B<--list>, B<-l> -=item B<--remaining> - -Run all commands in the sequence that have yet to be run. +List all available addons. -=head1 COMMAND SPECIFICATION +=item B<--no-act> -I can be a full name of a debhelper command, or a substring. It'll first -search for a command in the sequence exactly matching the name, to avoid any -ambiguity. If there are multiple substring matches, the last one in the -sequence will be used. +Prints commands that would run for a given sequence, but does not run them. -=cut +=back -sub command_pos { - my $command=shift; - my @sequence=@_; - - foreach my $i (0..$#sequence) { - if ($command eq $sequence[$i]) { - return $i; - } - } - - my @matches; - foreach my $i (0..$#sequence) { - if ($sequence[$i] =~ /\Q$command\E/) { - push @matches, $i; - } - } - if (! @matches) { - error "command specification \"$command\" does not match any command in the sequence" - } - else { - return pop @matches; - } -} +Other options passed to B are passed on to each command it runs. This +can be used to set an option like B<-v> or B<-X> or B<-N>, as well as for more +specialised options. =head1 EXAMPLES @@ -98,96 +78,279 @@ anything: dh binary-arch --no-act -This is a very simple rules file, for packages where the default seqences of +This is a very simple rules file, for packages where the default sequences of commands work with no additional options. #!/usr/bin/make -f %: - dh %@ + dh $@ + +Often you'll want to pass an option to a specific debhelper command. The +easy way to do with is by adding an override target for that command. + + #!/usr/bin/make -f + %: + dh $@ + + override_dh_strip: + dh_strip -Xfoo + + override_dh_auto_configure: + dh_auto_configure -- --with-foo --disable-bar + +Sometimes the automated L and L +can't guess what to do for a strange package. Here's how to avoid running +either and instead run your own commands. + + #!/usr/bin/make -f + %: + dh $@ -This is a simple rules file that is a good starting place for customisation. -(It's also available in F + override_dh_auto_configure: + ./mondoconfig + + override_dh_auto_build: + make universe-explode-in-delight + +Another common case is wanting to do something manually before or +after a particular debhelper command is run. #!/usr/bin/make -f + %: + dh $@ - build: - dh build + override_dh_fixperms: + dh_fixperms + chmod 4755 debian/foo/usr/bin/foo - clean: - dh clean +If your package uses autotools and you want to freshen F and +F with newer versions from the B package +at build time, you can use some commands provided in B +that automate it, like this. - install: build - dh install + #!/usr/bin/make -f + %: + dh $@ --with autotools_dev - binary-arch: install - dh binary-arch +Python tools are not run by dh by default, due to the continual change +in that area. (Before compatibility level v9, dh does run B.) +Here is how to use B. - binary-indep: install - dh binary-indep + #!/usr/bin/make -f + %: + dh $@ --with python2 + +Here is how to force use of Perl's B build system, +which can be necessary if debhelper wrongly detects that the package +uses MakeMaker. - binary: binary-arch binary-indep + #!/usr/bin/make -f + %: + dh $@ --buildsystem=perl_build -Often you'll want to pass an option to ./configure. This uses dh to run all -commands before L, then runs that command by hand, -and then finished up by running the rest of the sequence. You could also -run ./configure by hand, instead of bothering with using dh_auto_configure. -And if necessary, you can add commands to run automake, etc here too. +Here is an example of overriding where the BI<*> commands find +the package's source, for a package where the source is located in a +subdirectory. - build: - dh build --before configure - dh_auto_configure --kitchen-sink=yes - dh build --after configure + #!/usr/bin/make -f + %: + dh $@ --sourcedirectory=src -Here's how to skip two automated in a row (configure and build), and -instead run the commands by hand. +And here is an example of how to tell the BI<*> commands to build +in a subdirectory, which will be removed on B. - build: - dh build --before configure - ./mondoconfig - make universe-explode-in-delight - dh build --after build + #!/usr/bin/make -f + %: + dh $@ --builddirectory=build + +If your package can be built in parallel, you can support parallel building +as follows. Then B will work. + + #!/usr/bin/make -f + %: + dh $@ --parallel + +Here is a way to prevent B from running several commands that you don't +want it to run, by defining empty override targets for each command. + + #!/usr/bin/make -f + %: + dh $@ + + # Commands not to run: + override_dh_auto_test override_dh_compress override_dh_fixperms: + +A long build process for a separate documentation package can +be separated out using architecture independent overrides. +These will be skipped when running build-arch and binary-arch sequences. + + #!/usr/bin/make -f + %: + dh $@ + + override_dh_auto_build-indep: + $(MAKE) -C docs + + # No tests needed for docs + override_dh_auto_test-indep: + + override_dh_auto_install-indep: + $(MAKE) -C docs install -Another common case is wanting to run some code manually after a particular -debhelper command is run. +Adding to the example above, suppose you need to chmod a file, but only +when building the architecture dependent package, as it's not present +when building only documentation. - binary-arch: install - dh binary-arch --until dh_fixperms - # dh_fixperms has run, now override it for one program + override_dh_fixperms-arch: + dh_fixperms chmod 4755 debian/foo/usr/bin/foo - # and continue - dh binary-arch --after dh_fixperms -It's also fine to run debhelper commands before starting the dh sequence. -Just be sure to use the B<--remaining> option to ensure that commands -that normally come before those in the sequence are still run. +=head1 INTERNALS - binary-arch: install - dh_strip -X foo - dh_fixperms -X bar - dh binary-arch --remaining +If you're curious about B's internals, here's how it works under the hood. + +Each debhelper command will record when it's successfully run in +F. (Which B deletes.) So B can tell +which commands have already been run, for which packages, and skip running +those commands again. + +Each time B is run, it examines the log, and finds the last logged command +that is in the specified sequence. It then continues with the next command +in the sequence. The B<--until>, B<--before>, B<--after>, and B<--remaining> +options can override this behavior. + +A sequence can also run dependent targets in debian/rules. For +example, the "binary" sequence runs the "install" target. + +B uses the B environment variable to pass information +through to debhelper commands that are run inside override targets. The +contents (and indeed, existence) of this environment variable, as the name +might suggest, is subject to change at any time. + +Commands in the B, B and B +sequences are passed the B<-i> option to ensure they only work on +architecture independent packages, and commands in the B, +B and B sequences are passed the B<-a> +option to ensure they only work on architecture dependent packages. + +=head1 DEPRECATED OPTIONS + +The following options are deprecated. It's much +better to use override targets instead. + +=over 4 + +=item B<--until> I + +Run commands in the sequence until and including I, then stop. + +=item B<--before> I + +Run commands in the sequence before I, then stop. + +=item B<--after> I + +Run commands in the sequence that come after I. + +=item B<--remaining> + +Run all commands in the sequence that have yet to be run. + +=back + +In the above options, I can be a full name of a debhelper command, or +a substring. It'll first search for a command in the sequence exactly +matching the name, to avoid any ambiguity. If there are multiple substring +matches, the last one in the sequence will be used. =cut # Stash this away before init modifies it. my @ARGV_orig=@ARGV; -init(); +if (compat(8, 1)) { + # python-support was enabled by default before v9. + # (and comes first so python-central loads later and can disable it). + unshift @ARGV, "--with=python-support"; +} + +init(options => { + "until=s" => \$dh{UNTIL}, + "after=s" => \$dh{AFTER}, + "before=s" => \$dh{BEFORE}, + "remaining" => \$dh{REMAINING}, + "with=s" => sub { + my ($option,$value)=@_; + push @{$dh{WITH}},split(",", $value); + }, + "without=s" => sub { + my ($option,$value)=@_; + @{$dh{WITH}} = grep { $_ ne $value } @{$dh{WITH}}; + }, + "l" => \&list_addons, + "list" => \&list_addons, + }, + # Disable complaints about unknown options; they are passed on to + # the debhelper commands. + ignore_unknown_options => 1, + # Bundling does not work well since there are unknown options. + bundling => 0, +); inhibit_log(); +set_buildflags(); +warn_deprecated(); + +# If make is using a jobserver, but it is not available +# to this process, clean out MAKEFLAGS. This avoids +# ugly warnings when calling make. +if (is_make_jobserver_unavailable()) { + clean_jobserver_makeflags(); +} + +# Process the sequence parameter. +my $sequence; +if (! compat(7)) { + # From v8, the sequence is the very first parameter. + $sequence=shift @ARGV_orig; + if (defined $sequence && $sequence=~/^-/) { + error "Unknown sequence $sequence (options should not come before the sequence)"; + } +} +else { + # Before v8, the sequence could be at any position in the parameters, + # so was what was left after parsing. + $sequence=shift; + if (defined $sequence) { + @ARGV_orig=grep { $_ ne $sequence } @ARGV_orig; + } +} +if (! defined $sequence) { + error "specify a sequence to run"; +} +# make -B causes the rules file to be run as a target. +# Also support completly empty override targets. +# Note: it's not safe to use rules_explicit_target before this check, +# since it causes dh to be run. +my $dummy_target="debhelper-fail-me"; +if ($sequence eq 'debian/rules' || + $sequence =~ /^override_dh_/ || + $sequence eq $dummy_target) { + exit 0; +} + # Definitions of sequences. my %sequences; -$sequences{build} = [qw{ +my @bd_minimal = qw{ + dh_testdir +}; +my @bd = qw{ dh_testdir dh_auto_configure dh_auto_build dh_auto_test -}], -$sequences{clean} = [qw{ - dh_testdir - dh_auto_clean - dh_clean -}]; -$sequences{install} = [@{$sequences{build}}, qw{ +}; +my @i = qw{ dh_testroot dh_prep dh_installdirs @@ -202,7 +365,6 @@ $sequences{install} = [@{$sequences{build}}, qw{ dh_installcatalogs dh_installcron dh_installdebconf - dh_installcatalogs dh_installemacsen dh_installifupdown dh_installinfo @@ -217,77 +379,213 @@ $sequences{install} = [@{$sequences{build}}, qw{ dh_installudev dh_installwm dh_installxfonts + dh_installgsettings + dh_bugfiles + dh_ucf dh_lintian - dh_desktop dh_gconf dh_icons dh_perl - dh_pysupport - dh_scrollkeeper dh_usrlocal dh_link dh_compress dh_fixperms -}]; +}; +my @ba=qw{ + dh_strip + dh_makeshlibs + dh_shlibdeps +}; +if (! getpackages("arch")) { + @ba=(); +} my @b=qw{ + dh_installdeb dh_gencontrol dh_md5sums dh_builddeb }; -$sequences{'binary-indep'} = [@{$sequences{install}}, @b]; -$sequences{binary} = [@{$sequences{install}}, qw{ - dh_strip - dh_makeshlibs - dh_shlibdeps -}, @b]; -$sequences{'binary-arch'} = [@{$sequences{binary}}]; - -# Third-party commands can be listed in the sequences, but should be -# listed here as well. They will not be run if not present. -my %thirdparty=( - dh_pycompat => 1, - dh_pysupport => 1, -); +$sequences{clean} = [qw{ + dh_testdir + dh_auto_clean + dh_clean +}]; +$sequences{'build-indep'} = [@bd]; +$sequences{'build-arch'} = [@bd]; +if (! compat(8)) { + # From v9, sequences take standard rules targets into account. + $sequences{build} = [@bd_minimal, rules("build-arch"), rules("build-indep")]; + $sequences{'install-indep'} = [rules("build-indep"), @i]; + $sequences{'install-arch'} = [rules("build-arch"), @i]; + $sequences{'install'} = [rules("build"), rules("install-arch"), rules("install-indep")]; + $sequences{'binary-indep'} = [rules("install-indep"), @b]; + $sequences{'binary-arch'} = [rules("install-arch"), @ba, @b]; + $sequences{binary} = [rules("install"), rules("binary-arch"), rules("binary-indep")]; +} +else { + $sequences{build} = [@bd]; + $sequences{'install'} = [@{$sequences{build}}, @i]; + $sequences{'install-indep'} = [@{$sequences{'build-indep'}}, @i]; + $sequences{'install-arch'} = [@{$sequences{'build-arch'}}, @i]; + $sequences{binary} = [@{$sequences{install}}, @ba, @b]; + $sequences{'binary-indep'} = [@{$sequences{'install-indep'}}, @b]; + $sequences{'binary-arch'} = [@{$sequences{'install-arch'}}, @ba, @b]; +} -# Get the sequence of commands to run. -if (! @ARGV) { - error "specify a sequence to run"; +# Additional command options +my %command_opts; + +# sequence addon interface +sub _insert { + my $offset=shift; + my $existing=shift; + my $new=shift; + foreach my $sequence (keys %sequences) { + my @list=@{$sequences{$sequence}}; + next unless grep $existing, @list; + my @new; + foreach my $command (@list) { + if ($command eq $existing) { + push @new, $new if $offset < 0; + push @new, $command; + push @new, $new if $offset > 0; + } + else { + push @new, $command; + } + } + $sequences{$sequence}=\@new; + } +} +sub insert_before { + _insert(-1, @_); +} +sub insert_after { + _insert(1, @_); +} +sub remove_command { + my $command=shift; + foreach my $sequence (keys %sequences) { + $sequences{$sequence}=[grep { $_ ne $command } @{$sequences{$sequence}}]; + } + +} +sub add_command { + my $command=shift; + my $sequence=shift; + unshift @{$sequences{$sequence}}, $command; } -my $sequence=shift; +sub add_command_options { + my $command=shift; + push @{$command_opts{$command}}, @_; +} +sub remove_command_options { + my $command=shift; + if (@_) { + # Remove only specified options + if (my $opts = $command_opts{$command}) { + foreach my $opt (@_) { + $opts = [ grep { $_ ne $opt } @$opts ]; + } + $command_opts{$command} = $opts; + } + } + else { + # Clear all additional options + delete $command_opts{$command}; + } +} + +sub list_addons { + my %addons; + + for my $inc (@INC) { + eval q{use File::Spec}; + my $path = File::Spec->catdir($inc, "Debian/Debhelper/Sequence"); + if (-d $path) { + for my $module_path (glob "$path/*.pm") { + my $name = basename($module_path); + $name =~ s/\.pm$//; + $name =~ s/_/-/g; + $addons{$name} = 1; + } + } + } + + for my $name (sort keys %addons) { + print "$name\n"; + } + + exit 0; +} + +# Load addons, which can modify sequences. +foreach my $addon (@{$dh{WITH}}) { + my $mod="Debian::Debhelper::Sequence::$addon"; + $mod=~s/-/_/g; + eval "use $mod"; + if ($@) { + error("unable to load addon $addon: $@"); + } +} + if (! exists $sequences{$sequence}) { - error "Unknown sequence $sequence (chose from: ". + error "Unknown sequence $sequence (choose from: ". join(" ", sort keys %sequences).")"; } -my @sequence=@{$sequences{$sequence}}; +my @sequence=optimize_sequence(@{$sequences{$sequence}}); + +# The list of all packages that can be acted on. +my @packages=@{$dh{DOPACKAGES}}; # Get the options to pass to commands in the sequence. # Filter out options intended only for this program. my @options; -if ($sequence eq 'binary-arch') { +if ($sequence eq 'build-arch' || + $sequence eq 'install-arch' || + $sequence eq 'binary-arch') { push @options, "-a"; + # as an optimisation, remove from the list any packages + # that are not arch dependent + my %arch_packages = map { $_ => 1 } getpackages("arch"); + @packages = grep { $arch_packages{$_} } @packages; } -elsif ($sequence eq 'binary-indep') { +elsif ($sequence eq 'build-indep' || + $sequence eq 'install-indep' || + $sequence eq 'binary-indep') { push @options, "-i"; + # ditto optimisation for arch indep + my %indep_packages = map { $_ => 1 } getpackages("indep"); + @packages = grep { $indep_packages{$_} } @packages; } while (@ARGV_orig) { my $opt=shift @ARGV_orig; - next if $opt eq $sequence; - if ($opt =~ /^--?(after|until|before)$/) { + if ($opt =~ /^--?(after|until|before|with|without)$/) { shift @ARGV_orig; next; } - elsif ($opt =~ /^--?(remaining|(after|until|before)=)/) { + elsif ($opt =~ /^--?(no-act|remaining|(after|until|before|with|without)=)/) { next; } - push @options, $opt; + elsif ($opt=~/^-/) { + push @options, "-O".$opt; + } + elsif (@options) { + if ($options[$#options]=~/^-O--/) { + $options[$#options].="=".$opt; + } + else { + $options[$#options].=$opt; + } + } } # Figure out at what point in the sequence to start for each package. my %logged; my %startpoint; -foreach my $package (@{$dh{DOPACKAGES}}) { - my @log=loadlog($package); +foreach my $package (@packages) { + my @log=load_log($package, \%logged); if ($dh{AFTER}) { # Run commands in the sequence that come after the # specified command. @@ -297,7 +595,7 @@ foreach my $package (@{$dh{DOPACKAGES}}) { # no commands remain to run after it, communicating to # future dh instances that the specified command should not # be run again. - writelog($package, $sequence[$startpoint{$package}-1]); + write_log($sequence[$startpoint{$package}-1], $package); } elsif ($dh{REMAINING}) { # Start at the beginning so all remaining commands will get @@ -331,76 +629,262 @@ elsif ($dh{BEFORE}) { # Now run the commands in the sequence. foreach my $i (0..$stoppoint) { + my $command=$sequence[$i]; + # Figure out which packages need to run this command. - my @exclude; - foreach my $package (@{$dh{DOPACKAGES}}) { + my @todo; + my @opts=@options; + foreach my $package (@packages) { if ($startpoint{$package} > $i || $logged{$package}{$sequence[$i]}) { - push @exclude, $package; + push @opts, "-N$package"; + } + else { + push @todo, $package; } } - - if (@exclude eq @{$dh{DOPACKAGES}}) { - # Command already done for all packages. + next unless @todo; + + my $rules_target = rules_target($command); + if (defined $rules_target) { + # Don't pass DH_ environment variables, since this is + # a fresh invocation of debian/rules and any sub-dh commands. + delete $ENV{DH_INTERNAL_OPTIONS}; + delete $ENV{DH_INTERNAL_OVERRIDE}; + run("debian/rules", $rules_target); next; } - elsif (! @exclude) { - # Run command for all packages. - run($sequence[$i], @options); - } - else { - # Run command for only a subset of packages. - run($sequence[$i], @options, - map { "-N$_" } @exclude); + + # Check for override targets in debian/rules, and run instead of + # the usual command. (The non-arch-specific override is tried first, + # for simplest semantics; mixing it with arch-specific overrides + # makes little sense.) + foreach my $override_type (undef, "arch", "indep") { + @todo = run_override($override_type, $command, \@todo, @opts); } + next unless @todo; + + run($command, @opts); } sub run { my $command=shift; my @options=@_; - - # If a third party command is not in /usr/bin, don't try to run it. - if ($thirdparty{$command} && ! -x "/usr/bin/$command") { - return; + + # Include additional command options if any + unshift @options, @{$command_opts{$command}} + if exists $command_opts{$command}; + + # 3 space indent lines the command being run up under the + # sequence name after "dh ". + print " ".escape_shell($command, @options)."\n"; + + return if $dh{NO_ACT}; + + my $ret=system($command, @options); + if ($ret >> 8 != 0) { + exit $ret >> 8; + } + elsif ($ret) { + exit 1; + } +} + +# Tries to run an override target for a command. Returns the list of +# packages that it was unable to run an override target for. +sub run_override { + my $override_type=shift; # arch, indep, or undef + my $command=shift; + my @packages=@{shift()}; + my @options=@_; + + my $override="override_$command". + (defined $override_type ? "-".$override_type : ""); + + # Check which packages are of the right architecture for the + # override_type. + my (@todo, @rest); + if (defined $override_type) { + foreach my $package (@packages) { + my $isall=package_arch($package) eq 'all'; + if (($override_type eq 'indep' && $isall) || + ($override_type eq 'arch' && !$isall)) { + push @todo, $package; + } + else { + push @rest, $package; + push @options, "-N$package"; + } + } + } + else { + @todo=@packages; + } + + my $has_explicit_target = rules_explicit_target($override); + return @packages unless defined $has_explicit_target; # no such override + return @rest if ! $has_explicit_target; # has empty override + return @rest unless @todo; # has override, but no packages to act on + + if (defined $override_type) { + # Ensure appropriate -a or -i option is passed when running + # an arch-specific override target. + my $opt=$override_type eq "arch" ? "-a" : "-i"; + push @options, $opt unless grep { $_ eq $opt } @options; } - # The 4 spaces is a kind of half indent. - print " ".escape_shell($command, @options)."\n"; + # This passes the options through to commands called + # inside the target. + $ENV{DH_INTERNAL_OPTIONS}=join("\x1e", @options); + $ENV{DH_INTERNAL_OVERRIDE}=$command; + run("debian/rules", $override); + delete $ENV{DH_INTERNAL_OPTIONS}; + delete $ENV{DH_INTERNAL_OVERRIDE}; + + # Update log for overridden command now that it has + # finished successfully. + # (But avoid logging for dh_clean since it removes + # the log earlier.) + if (! $dh{NO_ACT} && $command ne 'dh_clean') { + write_log($command, @todo); + commit_override_log(@todo); + } - if (! $dh{NO_ACT}) { - my $ret=system($command, @options); - if ($ret >> 8 != 0) { - exit $ret >> 8; + return @rest; +} + +sub optimize_sequence { + my @sequence; + my %seen; + my $add=sub { + # commands can appear multiple times when sequences are + # inlined together; only the first should be needed + my $command=shift; + if (! $seen{$command}) { + $seen{$command}=1; + push @sequence, $command; + } + }; + foreach my $command (@_) { + my $rules_target=rules_target($command); + if (defined $rules_target && + ! defined rules_explicit_target($rules_target)) { + # inline the sequence for this implicit target + $add->($_) foreach optimize_sequence(@{$sequences{$rules_target}}); } - elsif ($ret) { - exit 1; + else { + $add->($command); } } + return @sequence; } -sub loadlog { - my $package=shift; - my $ext=pkgext($package); - - my @log; - open(LOG, "<", "debian/${ext}debhelper.log") || return; - while () { - chomp; - push @log, $_; - $logged{$package}{$_}=1; +sub rules_target { + my $command=shift; + if ($command =~ /^debian\/rules\s+(.*)/) { + return $1 + } + else { + return undef; } - close LOG; - return @log; } - -sub writelog { - my $package=shift; - my $cmd=shift; - my $ext=pkgext($package); - - open(LOG, ">>", "debian/${ext}debhelper.log") || error("failed to write to log"); - print LOG $cmd."\n"; - close LOG; + +sub rules { + return "debian/rules ".join(" ", @_); +} + +{ +my %targets; +my $rules_parsed; + +sub rules_explicit_target { + # Checks if a specified target exists as an explicit target + # in debian/rules. + # undef is returned if target does not exist, 0 if target is noop + # and 1 if target has dependencies or executes commands. + my $target=shift; + + if (! $rules_parsed) { + my $processing_targets = 0; + my $not_a_target = 0; + my $current_target; + open(MAKE, "LC_ALL=C make -Rrnpsf debian/rules $dummy_target 2>/dev/null |"); + while () { + if ($processing_targets) { + if (/^# Not a target:/) { + $not_a_target = 1; + } + else { + if (!$not_a_target && /^([^#:]+)::?\s*(.*)$/) { + # Target is defined. NOTE: if it is a depenency of + # .PHONY it will be defined too but that's ok. + # $2 contains target dependencies if any. + $current_target = $1; + $targets{$current_target} = ($2) ? 1 : 0; + } + else { + if (defined $current_target) { + if (/^#/) { + # Check if target has commands to execute + if (/^#\s*(commands|recipe) to execute/) { + $targets{$current_target} = 1; + } + } + else { + # Target parsed. + $current_target = undef; + } + } + } + # "Not a target:" is always followed by + # a target name, so resetting this one + # here is safe. + $not_a_target = 0; + } + } + elsif (/^# Files$/) { + $processing_targets = 1; + } + } + close MAKE; + $rules_parsed = 1; + } + + return $targets{$target}; +} + +} + +sub warn_deprecated { + foreach my $deprecated ('until', 'after', 'before', 'remaining') { + if (defined $dh{uc $deprecated}) { + warning("The --$deprecated option is deprecated. Use override targets instead."); + } + } +} + +sub command_pos { + my $command=shift; + my @sequence=@_; + + foreach my $i (0..$#sequence) { + if ($command eq $sequence[$i]) { + return $i; + } + } + + my @matches; + foreach my $i (0..$#sequence) { + if ($sequence[$i] =~ /\Q$command\E/) { + push @matches, $i; + } + } + if (! @matches) { + error "command specification \"$command\" does not match any command in the sequence" + } + else { + return pop @matches; + } } =head1 SEE ALSO