media-radio/tucnak: Fix segfault during configure

Closes: https://bugs.gentoo.org/878245
Signed-off-by: Thomas Beierlein <tomjbe@gentoo.org>

media-radio/tucnak/files/tucnak-4.37-configure.patch

@@ -0,0 +1,14 @@
+diff --git a/configure.ac b/configure.ac
+index 9266d41..35c2455 100644
+--- a/configure.ac
++++ b/configure.ac
+@@ -97,6 +97,9 @@ if test "$cross_compiling" = yes; then
+ else
+ AC_TRY_RUN([
+ #include <features.h>
++#ifdef __GLIBC__
++#include <gnu/libc-version.h>
++#endif
+ #include <stdio.h>
+ #ifdef __CYGWIN__
+ #include <cygwin/version.h>

media-radio/tucnak/tucnak-4.37.ebuild

@@ -24,7 +24,12 @@ RDEPEND="dev-libs/glib:2
 DEPEND="${RDEPEND}
 	virtual/pkgconfig"
 
+PATCHES=(
+	"${FILESDIR}/${PN}-4.37-configure.patch"
+	)
+
 src_prepare() {
+	eapply ${PATCHES[@]}
 	eapply_user
 	# fix destop file
 	sed -i -e "s/HamRadio/HamRadio;/" share/applications/tucnak.desktop || die