$dh{NO_ACT}=1;
}
- my @allpackages=getpackages();
# Get the name of the main binary package (first one listed in
# debian/control). Only if the main package was not set on the
# command line.
if (! exists $dh{MAINPACKAGE} || ! defined $dh{MAINPACKAGE}) {
+ my @allpackages=getpackages();
$dh{MAINPACKAGE}=$allpackages[0];
}
# Check if packages to build have been specified, if not, fall back to
- # the default, doing them all.
+ # the default, building all relevant packages.
if (! defined $dh{DOPACKAGES} || ! @{$dh{DOPACKAGES}}) {
push @{$dh{DOPACKAGES}}, getpackages('both');
}
return 0;
}
-sub dpkg_architecture_value {
- my $var = shift;
- my $value=`dpkg-architecture -q$var` || error("dpkg-architecture failed");
- chomp $value;
- return $value;
-}
-
-# Returns the build architecture. (Memoized)
{
- my $arch;
-
- sub buildarch {
- if (!defined $arch) {
- $arch=dpkg_architecture_value('DEB_HOST_ARCH');
+ my %dpkg_arch_output;
+ sub dpkg_architecture_value {
+ my $var = shift;
+ if (! exists($dpkg_arch_output{$var})) {
+ local $_;
+ open(PIPE, '-|', 'dpkg-architecture')
+ or error("dpkg-architecture failed");
+ while (<PIPE>) {
+ chomp;
+ my ($k, $v) = split(/=/, 2);
+ $dpkg_arch_output{$k} = $v;
+ }
+ close(PIPE);
}
- return $arch;
+ return $dpkg_arch_output{$var};
}
}
-# Returns the build OS. (Memoized)
-{
- my $os;
+# Returns the build architecture.
+sub buildarch {
+ dpkg_architecture_value('DEB_HOST_ARCH');
+}
- sub buildos {
- if (!defined $os) {
- $os=dpkg_architecture_value("DEB_HOST_ARCH_OS");
- }
- return $os;
- }
+# Returns the build OS.
+sub buildos {
+ dpkg_architecture_value("DEB_HOST_ARCH_OS");
}
# Passed an arch and a list of arches to match against, returns true if matched
-sub samearch {
- my $arch=shift;
- my @archlist=split(/\s+/,shift);
+{
+ my %knownsame;
- foreach my $a (@archlist) {
- system("dpkg-architecture", "-a$arch", "-i$a") == 0 && return 1;
+ sub samearch {
+ my $arch=shift;
+ my @archlist=split(/\s+/,shift);
+
+ foreach my $a (@archlist) {
+ # Avoid expensive dpkg-architecture call to compare
+ # with a simple architecture name. "linux-any" and
+ # other architecture wildcards are (currently)
+ # always hypenated.
+ if ($a !~ /-/) {
+ return 1 if $arch eq $a;
+ }
+ elsif (exists $knownsame{$arch}{$a}) {
+ return 1 if $knownsame{$arch}{$a};
+ }
+ elsif (system("dpkg-architecture", "-a$arch", "-i$a") == 0) {
+ return $knownsame{$arch}{$a}=1;
+ }
+ else {
+ $knownsame{$arch}{$a}=0;
+ }
+ }
+
+ return 0;
}
-
- return 0;
}
# Returns source package name