Conditionally enable PEM support in libnss.
2011-10-03 Martin von Gagern
https://bugs.gentoo.org/380119

--- a/dev-libs/nss/metadata.xml	2008-08-06 12:37:26.000000000 +0200
+++ b/dev-libs/nss/metadata.xml	2011-10-03 19:20:49.831194008 +0200
@@ -3,6 +3,7 @@
 <pkgmetadata>
 <herd>mozilla</herd>
 <use>
+  <flag name='pem'>Install plugin to read certificates in PEM format</flag>
   <flag name='utils'>Install utilities included with the library</flag>
 </use>
 </pkgmetadata>
diff -ur /usr/portage/dev-libs/nss/nss-3.12.11.ebuild dev-libs/nss/nss-3.12.11.ebuild
--- a/dev-libs/nss/nss-3.12.11.ebuild	2011-09-24 21:01:08.000000000 +0200
+++ b/dev-libs/nss/nss-3.12.11.ebuild	2011-10-03 19:20:18.732758029 +0200
@@ -9,12 +9,13 @@
 RTM_NAME="NSS_${PV//./_}_RTM"
 DESCRIPTION="Mozilla's Network Security Services library that implements PKI support"
 HOMEPAGE="http://www.mozilla.org/projects/security/pki/nss/"
-SRC_URI="ftp://ftp.mozilla.org/pub/mozilla.org/security/nss/releases/${RTM_NAME}/src/${P}.tar.gz"
+SRC_URI="ftp://ftp.mozilla.org/pub/mozilla.org/security/nss/releases/${RTM_NAME}/src/${P}.tar.gz
+pem? ( https://bugzilla.mozilla.org/attachment.cgi?id=547097 -> nss-pem-v5.patch )"
 
 LICENSE="|| ( MPL-1.1 GPL-2 LGPL-2.1 )"
 SLOT="0"
 KEYWORDS="~alpha ~amd64 ~arm ~hppa ~ia64 ~mips ~ppc ~ppc64 ~sparc ~x86 ~x86-fbsd ~amd64-linux ~x86-linux ~x64-macos ~x86-macos ~sparc-solaris ~x64-solaris ~x86-solaris"
-IUSE="utils"
+IUSE="utils pem"
 
 DEPEND="dev-util/pkgconfig"
 RDEPEND=">=dev-libs/nspr-${NSPR_VER}
@@ -24,6 +25,7 @@
 	# Custom changes for gentoo
 	epatch "${FILESDIR}/${PN}-3.12.5-gentoo-fixups.diff"
 	epatch "${FILESDIR}/${PN}-3.12.6-gentoo-fixup-warnings.patch"
+	use pem && epatch "${DISTDIR}/nss-pem-v5.patch"
 
 	cd "${S}"/mozilla/security/coreconf
 	# hack nspr paths