perl: Update cpan_build to automatically add libmodule-build-perl-native to

DEPENDS when building anything apart from libmodule-build-perl or
libmodule-build-perl-native. When building itself it uses itself to provide
the libmodule-build-perl code, for anything else it needs to have been built
and installed. Remove the explicit depends from the modules that use it.

1 files changed, 17 insertions, 0 deletions

diff --git a/classes/cpan_build.bbclass b/classes/cpan_build.bbclass
index b7cdf7d821..0660ef9b82 100644
--- a/classes/cpan_build.bbclass
+++ b/classes/cpan_build.bbclass
@@ -7,6 +7,23 @@ FILES_${PN} += '${libdir}/perl5'
 DEPENDS  += "perl-native"
 RDEPENDS += "perl"
 
+#
+# We also need to have built libmodule-build-perl-native for
+# everything except libmodule-build-perl-native itself (which uses
+# this class, but uses itself as the probider of
+# libmodule-build-perl)
+#
+def cpan_build_dep_prepend(d):
+	import bb;
+	if bb.data.getVar('CPAN_BUILD_DEPS', d, 1):
+		return ''
+	pn = bb.data.getVar('PN', d, 1)
+	if pn in ['libmodule-build-perl', 'libmodule-build-perl-native']:
+		return ''
+	return 'libmodule-build-perl-native '
+
+DEPENDS_prepend = "${@cpan_build_dep_prepend(d)}"
+
 def is_crosscompiling(d):
     import bb
     if not bb.data.inherits_class('native', d):