- Fix build on 11.x+ by fixing abs() issue

- Mention c++11 requirement
- Mark broken on 9.x: does not build due to lacking c++11 support

Approved by:	portmgr blanket

emulators/mednafen/Makefile

@@ -16,6 +16,9 @@ LIB_DEPENDS=	libcdio.so:sysutils/libcdio \
 		libsndfile.so:audio/libsndfile \
 		libvorbis.so:audio/libvorbis
 
+BROKEN_sparc64=	does not compile due to internal compiler error
+BROKEN_FreeBSD_9=	does not build
+
 GNU_CONFIGURE=	yes
 USE_SDL=	sdl net
 USE_GL=		gl glu
@@ -27,7 +30,7 @@ SUB_FILES=	pkg-message
 CONFIGURE_ARGS+=--disable-alsa --disable-alsatest \
 		--with-sdl-prefix=${LOCALBASE}
 
-USES=		cpe iconv pkgconfig:build tar:bzip2
+USES=		compiler:c++11-lib cpe iconv pkgconfig:build tar:bzip2
 CPE_VENDOR=	david_shadoff
 
 OPTIONS_DEFINE=	NLS DOCS JACK
@@ -70,8 +73,6 @@ SMS_CONFIGURE_ENABLE=sms
 SWAN_CONFIGURE_ENABLE=wswan
 VB_CONFIGURE_ENABLE=vb
 
-BROKEN_sparc64=	does not compile due to internal compiler error
-
 pre-configure:
 	@${REINPLACE_CMD} -e 's|/usr/local|${LOCALBASE}|g' \
 		-e 's|/usr/X11R6|${LOCALBASE}|g' \

emulators/mednafen/files/patch-src_cdrom_CDAccess__CCD.cpp

@@ -0,0 +1,11 @@
+--- src/cdrom/CDAccess_CCD.cpp.orig	2015-02-22 20:50:48 UTC
++++ src/cdrom/CDAccess_CCD.cpp
+@@ -346,7 +346,7 @@ void CDAccess_CCD::CheckSubQSanity(void)
+      if(prev_lba != INT_MAX && abs(lba - prev_lba) > 100)
+       throw MDFN_Error(0, _("Garbage subchannel Q data detected(excessively large jump in AMSF)"));
+ 
+-     if(abs(lba - s) > 100)
++     if(abs((long long)lba - (long long)s) > 100)
+       throw MDFN_Error(0, _("Garbage subchannel Q data detected(AMSF value is out of tolerance)"));
+ 
+      prev_lba = lba;