media-libs/liblo: Bump to version 0.31

Package-Manager: Portage-2.3.91, Repoman-2.3.20
Signed-off-by: Lars Wendler <polynomial-c@gentoo.org>

media-libs/liblo/Manifest

@@ -1 +1,2 @@
 DIST liblo-0.30.tar.gz 641498 BLAKE2B d884cc723d770f45414e838b6f2520c1f3b2a11972a9977d19b20ba68bc653f895eeb21ba0182a09fde1f096c9be084def1572f747463cd71e96bf0022ef7549 SHA512 51132933cc23237b70ed08fa7986a4a9f838529b83807746b358bcc171f8bbce7f37115b7c855520c9219bae93c74e502aebfb90e44dabdc6d0a00b8335336e3
+DIST liblo-0.31.tar.gz 643928 BLAKE2B 724a6369856b5f2ccd50edb8eacbf309760548b1f855d8b4f343cbfc3257ab3ceffc5f4e40d594ecb20050fcea11b7a6bc26f8e4a6ea72969628ebef05209fd5 SHA512 97f9561296c2e53f92db0cfee625687208b490f8bc229b6cffe88b43ca2a8da1ed3217aaa2151245ea483e54ad6c5e92b9cf10a20661766fa6d3bedb5a8cdd01

media-libs/liblo/liblo-0.31.ebuild

@@ -0,0 +1,44 @@
+# Copyright 1999-2020 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+inherit autotools
+
+DESCRIPTION="Lightweight OSC (Open Sound Control) implementation"
+HOMEPAGE="https://sourceforge.net/projects/liblo/"
+SRC_URI="mirror://sourceforge/${PN}/${P}.tar.gz"
+
+LICENSE="LGPL-2.1"
+SLOT="0"
+KEYWORDS="~amd64 ~ppc ~ppc64 ~x86 ~ppc-macos"
+IUSE="doc ipv6 static-libs"
+
+RESTRICT="test"
+
+BDEPEND="doc? ( app-doc/doxygen )"
+
+src_prepare() {
+	default
+
+	# don't build examples by default
+	sed -i '/^SUBDIRS =/s/examples//' Makefile.am || die
+
+	eautoreconf
+}
+
+src_configure() {
+	use doc || export ac_cv_prog_HAVE_DOXYGEN=false
+
+	# switching threads on/off breaks ABI, bugs #473282, #473286 and #473356
+	myeconfargs=(
+		--enable-threads
+		$(use_enable ipv6)
+		$(use_enable static-libs static)
+	)
+	econf "${myeconfargs[@]}"
+}
+
+src_install() {
+	default
+	find "${ED}" -type f -name "*.la" -delete || die
+}