media-radio/svxlink: Backport fix for newer gcc from github.

Thanks toralf.

Closes: https://bugs.gentoo.org/639592
Package-Manager: Portage-2.3.19, Repoman-2.3.6

media-radio/svxlink/files/svxlink-15.11-gcc72.patch

@@ -0,0 +1,12 @@
+# backported fix for newer compilers
+--- src/async/audio/AsyncAudioDeviceAlsa.cpp.orig	2017-12-27 16:32:27.185098621 +0000
++++ src/async/audio/AsyncAudioDeviceAlsa.cpp	2017-12-27 16:33:33.468067578 +0000
+@@ -548,7 +548,7 @@
+     return false;
+   }
+
+-  if (::abs(real_rate - sample_rate) > 100)
++  if (::abs(static_cast<int>(real_rate) - sample_rate) > 100)
+   {
+     cerr << "*** ERROR: The sample rate could not be set to "
+          << sample_rate << "Hz for ALSA device \"" << dev_name << "\". "

media-radio/svxlink/svxlink-15.11.ebuild

@@ -2,7 +2,7 @@
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=5
-inherit cmake-utils qt4-r2 user
+inherit cmake-utils eutils qt4-r2 user
 
 CMAKE_USE_DIR="${S}/src"
 
@@ -34,6 +34,9 @@ pkg_setup() {
 }
 
 src_prepare() {
+	# fix compilation problem with newer gcc bug #639592
+	epatch "${FILESDIR}"/${P}-gcc72.patch
+
 	cmake-utils_src_prepare
 	# drop deprecated desktop category (bug #475730)
 	sed -i -e "s:Categories=Application;:Categories=:g" src/qtel/qtel.desktop || die