dev-lang/harec: respect CFLAGS, LDFLAGS, and LDLINKFLAGS

Signed-off-by: Haelwenn (lanodan) Monnier <contact@hacktivis.me>

dev-lang/harec/harec-0.26.0-r1.ebuild

@@ -35,6 +35,9 @@ src_prepare() {
 		-e 's/CC =/CC ?=/' \
 		-e 's/AS =/AS ?=/' \
 		-e 's/LD =/LD ?=/' \
+		-e 's/CFLAGS =/CFLAGS +=/' \
+		-e 's/LDFLAGS =/LDFLAGS ?=/' \
+		-e 's/LDLINKFLAGS =/LDLINKFLAGS ?=/' \
 		-e "s/ARCH =/ARCH = ${target_triple/-*}/" \
 		config.mk || die