--- wxGTK-2.8.12.1.ebuild.orig	2013-05-08 02:40:40.000000000 +0200
+++ wxGTK-2.8.12.1.ebuild	2013-05-08 03:41:32.000000000 +0200
@@ -72,9 +72,29 @@
 	epatch "${FILESDIR}"/${PN}-2.8.7-mmedia.patch              # Bug #174874
 	epatch "${FILESDIR}"/${PN}-2.8.10.1-odbc-defines.patch     # Bug #310923
 	sed \
+		-e '/^SEARCH_INCLUDE="/,/"/cSEARCH_INCLUDE="/usr/include"' \
 		-e "s:/usr:${EPREFIX}/usr:g" \
-		-e '/SEARCH_INCLUDE="\\/,/"/cSEARCH_INCLUDE="'${EPREFIX}'/usr/include"' \
 		-i configure || die "sed on configure failed"
+
+	if [[ "$CFLAGS $CXXFLAGS $LDFLAGS" =~ (-flto|-O4) ]]; then
+		epatch "${FILESDIR}"/${PN}-2.8.12.1-setconcurrency-backport.patch
+
+		# wxGTK:2.8 does not like eauto{,re}conf, bakefile/m4 version mismatch
+		# so we do not patch *.in / *.ac for this build
+		ebegin "LTO enabled compiler flags detected, patching configure"
+		cp configure{,.before.sed}
+		sed	-e '/^for ac_func in thr_/ s:thr:pthread:' \
+			-e '/^char *(.f) *() *=/ s:():() __attribute__((used)):' \
+			-i configure &>/dev/null
+		eend $? || die "sed on configure failed"
+
+		# decomment to see changes to configure
+		#diff -ur configure{.before.sed,}
+		rm -f configure.before.sed
+	fi
+
+	# epatch_user source with portage patches applied
+	epatch_user
 }
 
 src_configure() {