From edc3e0a9eefbf7dceb00f80e0f4a35c4ff0839e9 Mon Sep 17 00:00:00 2001
From: Wojtek Kosior <kwojtus@protonmail.com>
Date: Mon, 13 Jan 2020 15:22:41 +0100
Subject: use MAKE variables

---
 build/Makefile | 19 +++++++++++++------
 1 file changed, 13 insertions(+), 6 deletions(-)

diff --git a/build/Makefile b/build/Makefile
index ac6c818..4a145e9 100644
--- a/build/Makefile
+++ b/build/Makefile
@@ -2,10 +2,17 @@ HOST_CC ?= gcc
 
 HOST_CFLAGS ?= -Wall -std=gnu99 -I../src/lib/rs232 -O3
 
-ARM_CC ?= arm-none-eabi-gcc
+ARM_BASE ?= arm-none-eabi
+
+ARM_CC ?= $(ARM_BASE)-gcc
 
 ARM_CFLAGS ?= -mcpu=cortex-a7 -ffreestanding -std=gnu11 -Wall -Wextra $(addprefix -I, $(dirs))
-ELFFLAGS ?= -nostdlib -lgcc
+
+ARM_AS ?= $(ARM_BASE)-as
+
+ARM_OBJCOPY ?= $(ARM_BASE)-objcopy
+
+ARM_ELFFLAGS ?= -nostdlib -lgcc
 
 KERNEL_STAGE2_OBJECTS := setup.o interrupt_vector.o interrupts.o uart.o demo_functionality.o paging.o ramfs_embeddable.o ramfs.o strings.o io.o atags.o scheduler.o
 
@@ -35,16 +42,16 @@ echo :
 	$(ARM_CC) $(ARM_CFLAGS),$(HOST_CC) $(HOST_CFLAGS)) -c $< -o $@
 
 %.img : %.elf
-	arm-none-eabi-objcopy $^ -O binary $@
+	$(ARM_OBJCOPY) $^ -O binary $@
 
 %.o: %.S
-	arm-none-eabi-as -mcpu=cortex-a7 $< -o $@
+	$(ARM_AS) -mcpu=cortex-a7 $< -o $@
 
 %_embeddable.o : %.img
-	arm-none-eabi-objcopy -I binary -O elf32-littlearm -B arm  $^ $@
+	$(ARM_OBJCOPY) -I binary -O elf32-littlearm -B arm  $^ $@
 
 %.elf : %.ld
-	arm-none-eabi-gcc -T $< -o $@ $(ELFFLAGS) $(filter %.o,$^)
+	$(ARM_CC) -T $< -o $@ $(ARM_ELFFLAGS) $(filter %.o,$^)
 
 PL0_test.elf : $(PL_0_TEST_OBJECTS)
 
-- 
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