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| author | Masahiro Yamada <yamada.masahiro@socionext.com> | 2016-09-26 13:05:01 +0900 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2016-10-07 14:26:34 +0000 |
| commit | e19b0fb4851f8b6371d91adb34c68c3566140d3f (patch) | |
| tree | 7bb90148f2ee99b80da8a861223d1dfdca21724b /net | |
| parent | 1406992f4f21f6d62e3ec0b700da1660519b14c0 (diff) | |
| download | u-boot-e19b0fb4851f8b6371d91adb34c68c3566140d3f.zip u-boot-e19b0fb4851f8b6371d91adb34c68c3566140d3f.tar.gz u-boot-e19b0fb4851f8b6371d91adb34c68c3566140d3f.tar.bz2 | |
kbuild: generate u-boot.cfg as a byproduct of include/autoconf.mk
Our build system still parses ad-hoc CONFIG options in header files
and generates include/autoconf.mk so that Makefiles can reference
them. This gimmick was introduced in the pre-Kconfig days and will
be kept until Kconfig migration is completed.
The include/autoconf.mk is generated like follows:
[1] Preprocess include/common.h with -DDO_DEPS_ONLY and
retrieve macros into include/autoconf.mk.tmp
[2] Reformat include/autoconf.mk.dep into include/autoconf.mk
with tools/scripts/define2mk.sed script
[3] Remove include/autoconf.mk.tmp
Here, include/autoconf.mk.tmp is similar to u-boot.cfg, which is
also generated by preprocessing include/config.h with -DDO_DEPS_ONLY.
In other words, there is much overlap among include/autoconf.mk and
u-boot.cfg build rules.
So, the idea is to split the build rule of include/autoconf.mk
into two stages. The first preprocesses headers into u-boot.cfg.
The second parses the u-boot.cfg into include/autoconf.mk. The
build rules of u-boot.cfg in Makefile and spl/Makefile will be gone.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'net')
0 files changed, 0 insertions, 0 deletions