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use cpio-clean to make a reproducible makefile

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This commit is contained in:
Trammell Hudson 2016-08-14 16:02:15 -04:00
parent 8a32fb4ac3
commit 74e21567d4
Failed to extract signature
1 changed files with 13 additions and 7 deletions
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20
Makefile
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@ -4,7 +4,8 @@ packages := $(pwd)/packages
build := $(pwd)/build
config := $(pwd)/build
all:
all: x230.rom
include modules/*
@ -80,7 +81,8 @@ initrd_bins += initrd/bin/$(notdir $1)
endef
$(foreach _, $(call outputs,kexec), $(eval $(call initrd_bin,$_)))
#$(foreach _, $(call outputs,tpmtotp), $(eval $(call initrd_bin,$_)))
$(foreach _, $(call outputs,tpmtotp), $(eval $(call initrd_bin,$_)))
#$(eval $(call initrd_bin,$(build)/$(tpmtotp_dir)/unsealtotp))
#$(foreach _, $(call outputs,xen), $(eval $(call initrd_bin,$_)))
# hack to install busybox into the initrd
@ -138,16 +140,14 @@ initrd_libs: $(initrd_bins)
#
#
initrd.cpio: $(initrd_bins) initrd_libs
find ./initrd -print0 \
| xargs -0 touch --no-dereference -d "1970-01-01"
cd ./initrd ; \
( \
echo "/dev" ; \
echo "/dev/console"; \
find . \
) \
| sort \
| cpio --quiet -H newc -o \
| ../cpio-clean \
> "../$@.tmp"
if ! cmp --quiet "$@" "$@.tmp"; then \
mv "$@.tmp" "$@"; \
@ -157,9 +157,12 @@ initrd.cpio: $(initrd_bins) initrd_libs
fi
# hack for the linux kernel to depend on the initrd image
# this will change once coreboot can link in the initrd separately
# populate the coreboot initrd image from the one we built.
# 4.4 doesn't allow this, but building from head does.
$(call outputs,linux): initrd.cpio
#$(call outputs,coreboot): $(build)/$(coreboot_dir)/initrd.cpio.xz
$(build)/$(coreboot_dir)/initrd.cpio.xz: initrd.cpio
xz < "$<" > "$@"
# hack for the coreboot to find the linux kernel
$(build)/$(coreboot_dir)/bzImage: $(call outputs,linux)
@ -173,3 +176,6 @@ $(call outputs,coreboot): $(build)/$(coreboot_dir)/bzImage
#export CC := $(XGCC)/bin/x86_64-elf-gcc
#export LDFLAGS := -L/lib/x86_64-linux-gnu
x230.rom: $(build)/$(coreboot_dir)/build/coreboot.rom
dd if="$<" of="$@" bs=1M skip=8