dev-lang/perl: Add patchlevel-gentoo to perl MANIFEST

To allow miniperl compilation, patchlevel-gentoo.h must be in the MANIFEST.
Configure uses this file to create the /host symlinks.

Signed-off-by: Gwendal Grignou <gwendal@chromium.org>

Comment from Gentoo perl team: Being nice here and adding this commit which
ended up without any further reasons or docs in our mailbox. I can't see how it
could hurt. I can't really see any problem that it's supposed to fix
either. Hey chromium team, more words please next time!

1 files changed, 74 insertions, 0 deletions

diff --git a/dev-lang/perl/files/eblits/src_prepare-v50240002.eblit b/dev-lang/perl/files/eblits/src_prepare-v50240002.eblit
new file mode 100644
index 000000000000..b30b1a57fcf9
--- /dev/null
+++ b/dev-lang/perl/files/eblits/src_prepare-v50240002.eblit
@@ -0,0 +1,74 @@
+# Copyright 1999-2016 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Id$
+
+src_prepare_update_patchlevel_h() {
+	# Copied and modified from debian:
+	# Copyright 2011 Niko Tyni
+	# This program is free software; you can redistribute it and/or modify
+	# it under the same terms as Perl itself.
+	local patchdir="${WORKDIR}/patches"
+	local prefix
+	local patchoutput="patchlevel-gentoo.h"
+
+	[[ -f ${patchdir}/series ]] || return 0
+
+while read patch
+do
+	patchname=$(echo $patch | sed 's/\.diff$//')
+	< $patchdir/$patch sed -e '/^Subject:/ { N; s/\n / / }' | sed -n -e '
+
+	# massage the patch headers
+	s|^Bug: .*https\?://rt\.perl\.org/.*id=\(.*\).*|[perl #\1]|; tprepend;
+	s|^Bug: .*https\?://rt\.cpan\.org/.*id=\(.*\).*|[rt.cpan.org #\1]|; tprepend;
+	s|^Bug-Gentoo: ||; tprepend;
+	s/^\(Subject\|Description\): //; tappend;
+	s|^Origin: .*http://perl5\.git\.perl\.org/perl\.git/commit\(diff\)\?/\(.......\).*|[\2]|; tprepend;
+
+	# post-process at the end of input
+	$ { x;
+		# include the version number in the patchlevel.h description (if available)
+		s/List packaged patches/&'" for ${PF}(#${PATCH_VER})"'/;
+
+		# escape any backslashes and double quotes
+		s|\\|\\\\|g; s|"|\\"|g;
+
+		# add a prefix
+		s|^|\t,"'"$prefix$patchname"' - |;
+		# newlines away
+		s/\n/ /g; s/  */ /g;
+		# add a suffix
+		s/ *$/"/; p
+	};
+	# stop all processing
+	d;
+	# label: append to the hold space
+	:append H; d;
+	# label: prepend to the hold space
+	:prepend x; H; d;
+	'
+done < "${WORKDIR}"/patches/series > "${S}/${patchoutput}"
+echo "${patchoutput}" >> "${S}/MANIFEST"
+}
+
+eblit-perl-src_prepare() {
+	local patch
+	EPATCH_OPTS+=" -p1"
+	einfo "Applying patches from ${MY_P}-${PATCH_VER} ..."
+	while read patch ; do
+		EPATCH_SINGLE_MSG="  ${patch} ..."
+		epatch "${WORKDIR}"/patches/${patch}
+	done < "${WORKDIR}"/patches/series
+
+	src_prepare_update_patchlevel_h
+
+	# pod/perltoc.pod fails
+	# lib/ExtUtils/t/Embed.t fails
+	if ! tc-is-static-only ; then
+		ln -s ${LIBPERL} libperl$(get_libname ${SHORT_PV}) || die
+		ln -s ${LIBPERL} libperl$(get_libname ) || die
+	fi
+
+	default
+}
+