- crosstool.mk: add small helper to get target's gcc version

make/crosstool.mk

@@ -119,6 +119,14 @@ $(CROSS_BASE)/arm/bre2ze4k:
 
 # -----------------------------------------------------------------------------
 
+get-gccversion:
+	@echo ""
+	@$(TARGET)-gcc --version
+
+# -----------------------------------------------------------------------------
+
 PHONY += crosstool
 PHONY += crosstools
 PHONY += crosstools-renew
+
+PHONY += get-gccversion