x11-apps/xcur2png: update EAPI 7 -> 8, fix CFLAGS

Closes: https://bugs.gentoo.org/916457
Signed-off-by: tastytea <gentoo@tastytea.de>

x11-apps/xcur2png/xcur2png-0.7.1-r1.ebuild

@@ -0,0 +1,25 @@
+# Copyright 2020-2023 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit flag-o-matic
+
+DESCRIPTION="Convert X cursors to PNG images"
+HOMEPAGE="https://github.com/eworm-de/xcur2png"
+SRC_URI="https://github.com/eworm-de/xcur2png/releases/download/${PV}/${P}.tar.gz"
+
+LICENSE="GPL-3"
+SLOT="0"
+KEYWORDS="~amd64"
+IUSE=""
+
+DEPEND="
+	media-libs/libpng
+	x11-libs/libXcursor
+"
+
+src_configure() {
+	append-cflags "-std=gnu89" # bug 916457
+	default
+}