Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1#
2# linux/arch/x86_64/boot/compressed/Makefile
3#
4# create a compressed vmlinux image from the original vmlinux
5#
6# Note all the files here are compiled/linked as 32bit executables.
7#
8
9targets := vmlinux vmlinux.bin vmlinux.bin.gz head.o misc.o piggy.o
10EXTRA_AFLAGS := -traditional
11AFLAGS := $(subst -m64,-m32,$(AFLAGS))
12
13# cannot use EXTRA_CFLAGS because base CFLAGS contains -mkernel which conflicts with
14# -m32
15CFLAGS := -m32 -D__KERNEL__ -Iinclude -O2 -fno-strict-aliasing
16LDFLAGS := -m elf_i386
17
18LDFLAGS_vmlinux := -Ttext $(IMAGE_OFFSET) -e startup_32 -m elf_i386
19
20$(obj)/vmlinux: $(obj)/head.o $(obj)/misc.o $(obj)/piggy.o FORCE
21 $(call if_changed,ld)
22 @:
23
24$(obj)/vmlinux.bin: vmlinux FORCE
25 $(call if_changed,objcopy)
26
27$(obj)/vmlinux.bin.gz: $(obj)/vmlinux.bin FORCE
28 $(call if_changed,gzip)
29
30LDFLAGS_piggy.o := -r --format binary --oformat elf32-i386 -T
31
32$(obj)/piggy.o: $(obj)/vmlinux.scr $(obj)/vmlinux.bin.gz FORCE
33 $(call if_changed,ld)