Makefile: Add support for overriding PLATFORM

Usage:
	make PLATFORM=arm-stupid-eabi

Signed-off-by: Asbjørn Sloth Tønnesen <asbjorn@asbjorn.biz>

diff --git a/new_cmsis/Makefile b/new_cmsis/Makefile
index d3af0b2..efcf2d9 100644 (file)
--- a/new_cmsis/Makefile
+++ b/new_cmsis/Makefile
@@ -1,5 +1,5 @@
 PROJECT=rapper
-PLATFORM=arm-none-eabi
+PLATFORM ?= arm-none-eabi
 LDFLAGS=--gc-sections -g -T LPC1768-flash.ld
 CFLAGS=-W -Wall -Os --std=gnu99 -fgnu89-inline -mcpu=cortex-m3 -mthumb -ffunction-sections -fdata-sections -I. -g