add DISABLE_GO_CHECKS flag

makefiles/targets.mk

@@ -103,11 +103,14 @@ status: | $(REPOS)
 	$(RUN_CMD_IN_ALL_REPOS)
 
 MIN_GO_VER := 1.12
+DISABLE_GO_CHECKS := 0
 go-checks:
+ifeq ($(DISABLE_GO_CHECKS), 0)
 	which go &>/dev/null || { echo "Go compiler not installed. Aborting."; exit 1; }
 	GO_VER="$$(go version | sed -E 's/^.*go([0-9.]+).*$$/\1/')"; \
 	       [[ $$(echo -e "$${GO_VER}\n$(MIN_GO_VER)" | sort -t '.' -k 1,1 -k 2,2 -g | head -n 1) == "$(MIN_GO_VER)" ]] || \
 	       { echo "Minimum Go compiler version required: $(MIN_GO_VER). Version available: $$GO_VER. Aborting."; exit 1; }
+endif
 
 vendor/go/bin/p2pd: | go-checks
 	echo -e $(BUILD_MSG) "$@" && \