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build: add buildinfo files for reproducibility 

generate feeds.buildinfo and version.buildinfo in build dir after
containing the feed revisions (via ./scripts/feeds list -sf) as well as
the current revision of buildroot (via ./scripts/getver.sh).

With this information it should be possible to reproduce any build,
especially the release builds.

Usage would be to move feeds.buildinfo to feeds.conf and git checkout the
revision hash of version.buildinfo.

Content of feeds.buildinfo would look similar to this:

    src-git routing https://git.openwrt.org/feed/routing.git^bf475d6
    src-git telephony https://git.openwrt.org/feed/telephony.git^470eb8e
    ...

Content of version.buildinfo would look similar to this:

    r10203+1-c12bd3a21b

Without the exact feed revision it is not possible to determine
installed package versions.

Also rename config.seed to config.buildinfo to follow the recommended
style of https://reproducible-builds.org/docs/recording/

Signed-off-by: Paul Spooren <mail@aparcar.org>
This commit is contained in:
Paul Spooren 2019-06-13 02:24:04 +02:00 committed by Daniel Golle
parent bcfd1d7685
commit 454021581f
3 changed files with 10 additions and 4 deletions
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10
Makefile
View File

@ -89,12 +89,18 @@ prereq: $(target/stamp-prereq) tmp/.prereq_packages
checksum: FORCE
$(call sha256sums,$(BIN_DIR),$(CONFIG_BUILDBOT))
buildversion: FORCE
$(SCRIPT_DIR)/getver.sh > $(BIN_DIR)/version.buildinfo
feedsversion: FORCE
$(SCRIPT_DIR)/feeds list -fs > $(BIN_DIR)/feeds.buildinfo
diffconfig: FORCE
mkdir -p $(BIN_DIR)
$(SCRIPT_DIR)/diffconfig.sh > $(BIN_DIR)/config.seed
$(SCRIPT_DIR)/diffconfig.sh > $(BIN_DIR)/config.buildinfo
prepare: .config $(tools/stamp-compile) $(toolchain/stamp-compile)
$(_SINGLE)$(SUBMAKE) -r diffconfig
$(_SINGLE)$(SUBMAKE) -r diffconfig buildversion feedsversion
world: prepare $(target/stamp-compile) $(package/stamp-compile) $(package/stamp-install) $(target/stamp-install) FORCE
$(_SINGLE)$(SUBMAKE) -r package/index

2
config/Config-build.in
View File

@ -93,7 +93,7 @@ menu "Global build settings"
bool "Include build configuration in firmware" if DEVEL
default n
help
If enabled, config.seed will be stored in /etc/build.config of firmware.
If enabled, config.buildinfo will be stored in /etc/build.config of firmware.
config COLLECT_KERNEL_DEBUG
bool

2
package/base-files/Makefile
View File

@ -198,7 +198,7 @@ define Package/base-files/install
$(if $(CONFIG_INCLUDE_CONFIG), \
echo -e "# Build configuration for board $(BOARD)/$(SUBTARGET)/$(PROFILE)\n" >$(1)/etc/build.config; \
cat $(BIN_DIR)/config.seed >>$(1)/etc/build.config)
cat $(BIN_DIR)/config.buildinfo >>$(1)/etc/build.config)
$(if $(CONFIG_CLEAN_IPKG),, \
mkdir -p $(1)/etc/opkg; \