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abefafd70b
Currently hello_world fails to build with distro cross compiler packages such as Debian gcc-powerpc64-linux-gnu, because it doesn't provide string.h or unistd.h. In fact we don't need them, we just need stddef.h. This adds #include <stddef.h> to console.h to get size_t defined. We also add #include "console.h" to console.c. The hello_world Makefile currently hard-codes CROSS_COMPILE on non-PPC machines. This means that a command like: $ CROSS_COMPILE=powerpc64le-linux-gnu- make doesn't do what you expect; it just tries to use powerpc64le-linux-gcc regardless. Adding a '?' makes it do what one expects. Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
29 lines
865 B
Makefile
29 lines
865 B
Makefile
ARCH = $(shell uname -m)
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ifneq ("$(ARCH)", "ppc64")
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ifneq ("$(ARCH)", "ppc64le")
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CROSS_COMPILE ?= powerpc64le-linux-
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endif
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endif
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CC = $(CROSS_COMPILE)gcc
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LD = $(CROSS_COMPILE)ld
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OBJCOPY = $(CROSS_COMPILE)objcopy
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CFLAGS = -Os -g -Wall -std=c99 -msoft-float -mno-string -mno-multiple -mno-vsx -mno-altivec -mlittle-endian -fno-stack-protector -mstrict-align -ffreestanding -fdata-sections -ffunction-sections
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ASFLAGS = $(CFLAGS)
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LDFLAGS = -T powerpc.lds
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all: hello_world.hex
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hello_world.elf: hello_world.o head.o console.o
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$(LD) $(LDFLAGS) -o hello_world.elf hello_world.o head.o console.o
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hello_world.bin: hello_world.elf
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$(OBJCOPY) -O binary hello_world.elf hello_world.bin
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hello_world.hex: hello_world.bin
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../scripts/bin2hex.py hello_world.bin > hello_world.hex
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clean:
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@rm -f *.o hello_world.elf hello_world.bin hello_world.hex
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