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-rw-r--r--Debian/Debhelper/Dh_Buildsystems.pm42
1 files changed, 42 insertions, 0 deletions
diff --git a/Debian/Debhelper/Dh_Buildsystems.pm b/Debian/Debhelper/Dh_Buildsystems.pm
index 4986267..3908145 100644
--- a/Debian/Debhelper/Dh_Buildsystems.pm
+++ b/Debian/Debhelper/Dh_Buildsystems.pm
@@ -30,6 +30,7 @@ my $opt_buildsys;
my $opt_sourcedir;
my $opt_builddir;
my $opt_list;
+my $opt_parallel;
sub create_buildsystem_instance {
my $system=shift;
@@ -47,6 +48,9 @@ sub create_buildsystem_instance {
if (!exists $bsopts{sourcedir} && defined $opt_sourcedir) {
$bsopts{sourcedir} = ($opt_sourcedir eq "") ? undef : $opt_sourcedir;
}
+ if (!exists $bsopts{parallel}) {
+ $bsopts{parallel} = $opt_parallel;
+ }
return $module->new(%bsopts);
}
@@ -122,9 +126,47 @@ sub buildsystems_init {
"l" => \$opt_list,
"list" => \$opt_list,
+
+ "j:i" => \$opt_parallel,
+ "parallel:i" => \$opt_parallel,
);
$args{options}{$_} = $options{$_} foreach keys(%options);
Debian::Debhelper::Dh_Lib::init(%args);
+
+ # Post-process parallel building option. Initially $opt_parallel may have
+ # such values:
+ # * undef - no --parallel option was specified. This tells buildsystem class
+ # not to mess with MAKEFLAGS (with the exception of cleaning MAKEFLAGS
+ # from pointless unavailable jobserver options to avoid warnings) nor
+ # enable parallel.
+ # * 1 - --parallel=1 option was specified, hence the package should never be
+ # built in parallel mode. Cleans MAKEFLAGS if needed.
+ # * 0 - --parallel was specified without interger argument meaning package
+ # does not want to enforce limit on maximum number of parallel processes.
+ # * N > 1 - --parallel=N was specified where N is the maximum number parallel
+ # processes the package wants to enforce.
+ # Taken DEB_BUILD_OPTIONS and all this into account, set $opt_parallel to the
+ # number of parallel processes to be used for *this* build.
+ if (defined $opt_parallel) {
+ if ($opt_parallel >= 0 && exists $ENV{DEB_BUILD_OPTIONS}) {
+ # Parse parallel=n tag
+ my $n;
+ foreach my $opt (split(/\s+/, $ENV{DEB_BUILD_OPTIONS})) {
+ $n = $1 if $opt =~ /^parallel=(\d+)$/;
+ }
+ if (defined $n && $n > 0) {
+ $opt_parallel = $n if $opt_parallel == 0 || $n < $opt_parallel;
+ }
+ else {
+ # Invalid value in the parallel tag. Disable.
+ $opt_parallel = 1;
+ }
+ }
+ else {
+ # In case invalid number was passed
+ $opt_parallel = 1;
+ }
+ }
}
sub buildsystems_list {