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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 /Makefile | |
| parent | 1406992f4f21f6d62e3ec0b700da1660519b14c0 (diff) | |
| download | u-boot-e19b0fb4851f8b6371d91adb34c68c3566140d3f.tar.gz | |
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 'Makefile')
| -rw-r--r-- | Makefile | 17 |
1 files changed, 1 insertions, 16 deletions
@@ -741,8 +741,7 @@ DO_STATIC_RELA = endif # Always append ALL so that arch config.mk's can add custom ones -ALL-y += u-boot.srec u-boot.bin u-boot.sym System.map u-boot.cfg \ - binary_size_check +ALL-y += u-boot.srec u-boot.bin u-boot.sym System.map binary_size_check ALL-$(CONFIG_ONENAND_U_BOOT) += u-boot-onenand.bin ifeq ($(CONFIG_SPL_FSL_PBL),y) @@ -942,20 +941,6 @@ u-boot.sha1: u-boot.bin u-boot.dis: u-boot $(OBJDUMP) -d $< > $@ -# If .u-boot.cfg.d is still present, then either: -# a) The previous build used a Makefile that used if_changed rather than -# if_changed_dep when building u-boot.cfg, and hence any later builds will -# be unaware of the dependencies for u-boot.cfg. In this case, we must -# delete u-boot.cfg to force it and .u-boot.cfg.cmd to be rebuilt the -# correct way. -# b) The previous build failed or was interrupted while building u-boot.cfg, -# so deleting u-boot.cfg isn't going to cause any additional work. -ifneq ($(wildcard $(obj)/.u-boot.cfg.d),) - unused := $(shell rm -f $(obj)/u-boot.cfg) -endif -u-boot.cfg: include/config.h FORCE - $(call if_changed_dep,cpp_cfg) - ifdef CONFIG_TPL SPL_PAYLOAD := tpl/u-boot-with-tpl.bin else |