endif
Finally, remember that you are not limited to using override targets in the
-rules file when using B<dh>. You can also explicitly define the regular
+rules file when using B<dh>. You can also explicitly define any of the regular
rules file targets when it makes sense to do so. A common reason to do this
-is if your package needs different B<build-arch> and B<build-indep> targets.
+is when your package needs different B<build-arch> and B<build-indep> targets.
For example, a package with a long document build process can put it in
B<build-indep>.
%:
dh $@
- binary: binary-arch binary-indep ;
- binary-arch:: build-arch
- binary-indep:: build-indep
- build: build-arch build-indep ;
build-indep:
$(MAKE) docs
build-arch:
$(MAKE) bins
+Note that in the example above, dh will arrange for "debian/rules build"
+to call your build-indep and build-arch targets. You do not need to
+explicitly define the dependencies in the rules file when using dh with
+compatability level v9. This example would be more complicated with
+earlier compatability levels.
+
=head1 INTERNALS
If you're curious about B<dh>'s internals, here's how it works under the hood.
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<dh> sets environment variables listed by B<dpkg-buildflags>, unless
+ they are already set. It supports DEB_BUILD_OPTIONS=noopt too.
+
B<dh> uses the B<DH_INTERNAL_OPTIONS> 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
bundling => 0,
);
inhibit_log();
-
+ set_buildflags();
# If make is using a jobserver, but it is not available
# to this process, clean out MAKEFLAGS. This avoids
clean_jobserver_makeflags();
}
+# Process the sequence parameter.
+my $sequence;
+if (! compat(7)) {
+ # From v8, the sequence is the very first parameter.
+ $sequence=shift @ARGV_orig;
+ if ($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
-}],
-$sequences{'build-indep'} = [@{$sequences{build}}];
-$sequences{'build-arch'} = [@{$sequences{build}}];
-$sequences{clean} = [qw{
- dh_testdir
- dh_auto_clean
- dh_clean
-}];
+};
+my @i_minimal = qw{
+ dh_testroot
+};
my @i = qw{
dh_testroot
dh_prep
dh_compress
dh_fixperms
};
-$sequences{'install'} = [@{$sequences{build}}, @i];
-$sequences{'install-indep'} = [@{$sequences{'build-indep'}}, @i];
-$sequences{'install-arch'} = [@{$sequences{'build-arch'}}, @i];
my @ba=qw{
dh_strip
dh_makeshlibs
dh_md5sums
dh_builddeb
};
-$sequences{binary} = [@{$sequences{install}}, @ba, @b];
-$sequences{'binary-indep'} = [@{$sequences{'install-indep'}}, @b];
-$sequences{'binary-arch'} = [@{$sequences{'install-arch'}}, @ba, @b];
+$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.
+ if (rules_explicit_target('build-arch') ||
+ rules_explicit_target('build-indep')) {
+ # run sequences separately
+ $sequences{build} = [@bd_minimal, rules("build-arch"), rules("build-indep")];
+ }
+ else {
+ # run standard sequence (this is faster)
+ $sequences{build} = [@bd];
+ }
+ $sequences{'install-indep'} = [rules("build-indep"), @i];
+ $sequences{'install-arch'} = [rules("build-arch"), @i];
+ if (rules_explicit_target('install-arch') ||
+ rules_explicit_target('install-indep')) {
+ # run sequences separately
+ $sequences{'install'} = [rules("build"), @i_minimal, rules("install-arch"), rules("install-indep")];
+ }
+ else {
+ # run standard sequence (this is faster)
+ $sequences{'install'} = [rules("build"), @i, 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];
+}
# Additional command options
my %command_opts;
exit 0;
}
+# Load addons, which can modify sequences.
foreach my $addon (@{$dh{WITH}}) {
my $mod="Debian::Debhelper::Sequence::$addon";
$mod=~s/-/_/g;
}
}
-my $sequence;
-if (! compat(7)) {
- # From v8, the sequence is the very first parameter.
- $sequence=shift @ARGV_orig;
- if ($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 $sequence) {
- error "specify a sequence to run";
-}
-if ($sequence eq 'debian/rules' ||
- $sequence =~ /^override_dh_/) {
- # make -B causes the rules file to be run as a target.
- # Also support completly empty override targets.
- exit 0;
-}
-elsif (! exists $sequences{$sequence}) {
+if (! exists $sequences{$sequence}) {
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}};
# run them instead of running the command directly.
my $override_command;
my $has_explicit_target = rules_explicit_target("override_".$command);
- if (defined $has_explicit_target) {
+
+ 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.
+ $override_command=$command;
+ delete $ENV{DH_INTERNAL_OPTIONS};
+ delete $ENV{DH_INTERNAL_OVERRIDE};
+ $command="debian/rules";
+ @options=$rules_target;
+ }
+ elsif (defined $has_explicit_target) {
$override_command=$command;
# Check if target isn't noop
if ($has_explicit_target) {
}
}
+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}});
+ }
+ else {
+ $add->($command);
+ }
+ }
+ return @sequence;
+}
+
+sub rules_target {
+ my $command=shift;
+ if ($command =~ /^debian\/rules\s+(.*)/) {
+ return $1
+ }
+ else {
+ return undef;
+ }
+}
+
+sub rules {
+ return "debian/rules ".join(" ", @_);
+}
+
{
my %targets;
my $rules_parsed;
my $processing_targets = 0;
my $not_a_target = 0;
my $current_target;
- open(MAKE, "LC_ALL=C make -Rrnpsf debian/rules debhelper-fail-me 2>/dev/null |");
+ open(MAKE, "LC_ALL=C make -Rrnpsf debian/rules $dummy_target 2>/dev/null |");
while (<MAKE>) {
if ($processing_targets) {
if (/^# Not a target:/) {
projects / debhelper.git / commitdiff