From: Wesley Ellis <tahnok@gmail.com>
Date: Wed, 26 Jun 2024 15:30:31 +0000 (-0400)
Subject: Check that color is valid
X-Git-Url: https://git.earman.xyz/?a=commitdiff_plain;h=96fdf64c4c23d61eade6ea5f178b1ea4b418de86;p=sensor-watch.git

Check that color is valid

Instead of merely checking that COLOR is set, check that it is one of
RED, BLUE or GREEN
---

diff --git a/make.mk b/make.mk
index bb2d153..00933d0 100644
--- a/make.mk
+++ b/make.mk
@@ -213,6 +213,12 @@ ifndef COLOR
 $(error Set the COLOR variable to RED, BLUE, or GREEN depending on what board you have.)
 endif
 
+COLOR_VALID := $(filter $(COLOR),RED BLUE GREEN)
+
+ifeq ($(COLOR_VALID),)
+$(error COLOR must be RED, BLUE, or GREEN)
+endif
+
 ifeq ($(COLOR), BLUE)
 CFLAGS += -DWATCH_IS_BLUE_BOARD
 endif