Difuse/u-boot
2
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

buildman: Add documentation for CONFIG checking

Browse source 
The -K option is not mentioned in the README at present. Add some notes
to describe how this is used.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2016-11-13 14:25:52 -07:00
parent b50113f373
commit 94d2ebe5bc
1 changed files with 37 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

37
tools/buildman/README
View file

@ -968,6 +968,43 @@ of the source tree, thus allowing rapid tested evolution of the code.
SOURCE_DATE_EPOCH=0 ./tools/buildman/buildman -I -P tegra
Checking configuration
======================
A common requirement when converting CONFIG options to Kconfig is to check
that the effective configuration has not changed due to the conversion.
Buildman supports this with the -K option, used after a build. This shows
differences in effective configuration between one commit and the next.
For example:
$ buildman -b kc4 -sK
...
43: Convert CONFIG_SPL_USBETH_SUPPORT to Kconfig
arm:
+ u-boot.cfg: CONFIG_SPL_ENV_SUPPORT=1 CONFIG_SPL_NET_SUPPORT=1
+ u-boot-spl.cfg: CONFIG_SPL_MMC_SUPPORT=1 CONFIG_SPL_NAND_SUPPORT=1
+ all: CONFIG_SPL_ENV_SUPPORT=1 CONFIG_SPL_MMC_SUPPORT=1 CONFIG_SPL_NAND_SUPPORT=1 CONFIG_SPL_NET_SUPPORT=1
am335x_evm_usbspl :
+ u-boot.cfg: CONFIG_SPL_ENV_SUPPORT=1 CONFIG_SPL_NET_SUPPORT=1
+ u-boot-spl.cfg: CONFIG_SPL_MMC_SUPPORT=1 CONFIG_SPL_NAND_SUPPORT=1
+ all: CONFIG_SPL_ENV_SUPPORT=1 CONFIG_SPL_MMC_SUPPORT=1 CONFIG_SPL_NAND_SUPPORT=1 CONFIG_SPL_NET_SUPPORT=1
44: Convert CONFIG_SPL_USB_HOST_SUPPORT to Kconfig
...
This shows that commit 44 enabled three new options for the board
am335x_evm_usbspl which were not enabled in commit 43. There is also a
summary for 'arm' showing all the changes detected for that architecture.
In this case there is only one board with changes, so 'arm' output is the
same as 'am335x_evm_usbspl'/
The -K option uses the u-boot.cfg, spl/u-boot-spl.cfg and tpl/u-boot-tpl.cfg
files which are produced by a build. If all you want is to check the
configuration you can in fact avoid doing a full build, using -D. This tells
buildman to configuration U-Boot and create the .cfg files, but not actually
build the source. This is 5-10 times faster than doing a full build.
Other options
=============