games-arcade/insaneodyssey: Fix building with GCC-6

Bug: https://bugs.gentoo.org/show_bug.cgi?id=600894
Package-Manager: Portage-2.3.6, Repoman-2.3.2
Closes: gentoo#5263

games-arcade/insaneodyssey/files/insaneodyssey-000311-gcc6.patch

@@ -0,0 +1,21 @@
+Bug: https://bugs.gentoo.org/600894
+
+--- a/insaneodyssey/io.cpp
++++ b/insaneodyssey/io.cpp
+@@ -22,6 +22,7 @@
+ #include <stdlib.h>
+ #include <stdio.h>
+ #include <string.h>
++#include <cmath>
+
+ #include <SDL/SDL.h>
+
+@@ -894,7 +895,7 @@
+ else
+ { 
+ if ( jumping )
+- yspeed = -jumpheight - abs(xspeed)/4;
++ yspeed = -jumpheight - std::abs(xspeed)/4;
+ }
+
+ short TempX = (x + width/2) / TILESIZE;

games-arcade/insaneodyssey/insaneodyssey-000311.ebuild

@@ -1,4 +1,4 @@
-# Copyright 1999-2015 Gentoo Foundation
+# Copyright 1999-2017 Gentoo Foundation
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=5
@@ -30,6 +30,9 @@ src_prepare() {
  "${FILESDIR}"/${P}-datafiles.patch > "${T}"/datafiles.patch \
  || die
  epatch "${T}"/datafiles.patch
+
+ epatch "${FILESDIR}"/${P}-gcc6.patch
+
  sed -i \
  -e "/lvl/s:^:${GAMES_DATADIR}/${PN}/:" \
  -e "s:night:${GAMES_DATADIR}/${PN}/night:" \