net-libs/udns: fix build w/ clang 16

Closes: https://bugs.gentoo.org/874759
Signed-off-by: Sam James <sam@gentoo.org>

net-libs/udns/files/udns-0.4-configure-clang16.patch

@@ -0,0 +1,24 @@
+https://bugs.gentoo.org/874759
+--- a/configure
++++ b/configure
+@@ -65,9 +65,9 @@ ac_prog_ranlib_v
+ 
+ ac_ign ac_yesno "for getopt()" ac_have GETOPT ac_link <<EOF
+ #include <stdio.h>
++#include <unistd.h>
+ extern int optind;
+ extern char *optarg;
+-extern int getopt(int, char **, char *);
+ int main(int argc, char **argv) {
+   getopt(argc, argv, "abc");
+   return optarg ? optind : 0;
+@@ -75,7 +75,8 @@ int main(int argc, char **argv) {
+ EOF
+ 
+ if ac_library_find_v 'socket and connect' "" "-lsocket -lnsl" <<EOF
+-int main() { socket(); connect(); return 0; }
++#include <sys/socket.h>
++int main() { socket(0, 0, 0); connect(0, 0, 0); return 0; }
+ EOF
+ then :
+ else

net-libs/udns/udns-0.4-r1.ebuild

@@ -1,9 +1,9 @@
 # Copyright 1999-2022 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
-EAPI=7
+EAPI=8
 
-inherit toolchain-funcs
+inherit edo toolchain-funcs
 
 DESCRIPTION="Async-capable DNS stub resolver library"
 HOMEPAGE="http://www.corpit.ru/mjt/udns.html"
@@ -14,9 +14,13 @@ SLOT="0"
 KEYWORDS="amd64 ~hppa ppc ~ppc64 sparc x86"
 IUSE="ipv6 static +tools"
 
+PATCHES=(
+	"${FILESDIR}"/${PN}-0.4-configure-clang16.patch
+)
+
 src_configure() {
 	# Uses non-standard configure script, econf doesn't work
-	CC="$(tc-getCC)" ./configure $(use_enable ipv6) || die "Configure failed"
+	CC="$(tc-getCC)" edo ./configure $(use_enable ipv6)
 }
 
 src_compile() {