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libpayload/Makefile.payload: Revise config strategy 

Payloads often just use one of the defconfigs for libpayload. When
the `Makefile.payload` was introduced, it also added dependencies
to pass a `make oldconfig` or `make defconfig` for the payload on
to libpayload. Turned out, this creates some dependency madness
when, for instance, `make oldconfig` gets called without a libpay-
load `.config` available, or when we try to include the `.config`
in the `Makefile`.

To make things worse, Kconfig's `Makefile` that is imported from
Linux contains some rarely used paths that are generally incompa-
tible to our environment. So let's get rid of the hard-to-control
automatism.

Payloads that don't want to use a libpayload defconfig need to
clear the `$(LIBPAYLOAD_DEFCONFIG)` variable and manually run
the respective config target to generate a `.config`. To fully
support this, the rule to create a `.config` via `defconfig` is
guarded by `$(LIBPAYLOAD_DEFCONFIG)`. Otherwise we'd have a
spurious, broken recipe when the variable is unset.

We keep the option to call libpayload targets with an `lp-` prefix
for convenience. The existing, explicit targets `lp-defconfig` and
`lp-oldconfig` are replaced with a pattern match, so all config
and other targets should work.

Change-Id: Ie3fcce58d98e248c7182cd47f2a797fe066dd18a
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/62273
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Thomas Heijligen <src@posteo.de>
This commit is contained in:
Nico Huber 2022-02-22 18:58:48 +01:00 committed by Felix Held
parent e381679473
commit 543c79224c
1 changed files with 9 additions and 9 deletions
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18
payloads/libpayload/Makefile.payload
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@ -122,26 +122,26 @@ LIBPAYLOAD_OPTS += DOTCONFIG="$(LIBPAYLOAD_DOTCONFIG)"
LIBPAYLOAD_OPTS += CONFIG_=CONFIG_LP_
LIBPAYLOAD_OPTS += $(if $(CCACHE),CONFIG_LP_CCACHE=y)
defconfig: lp-defconfig
lp-defconfig: $(LIBPAYLOAD_DOTCONFIG)
$(LIBPAYLOAD_DOTCONFIG): $(LIBPAYLOAD_DEFCONFIG) | $(PAYLOAD_DEPS)
ifneq ($(LIBPAYLOAD_DEFCONFIG),)
$(LIBPAYLOAD_DOTCONFIG): $(LIBPAYLOAD_DEFCONFIG)
$(MAKE) -C $(LIBPAYLOAD_SRC) $(LIBPAYLOAD_OPTS) \
KBUILD_DEFCONFIG=$(LIBPAYLOAD_DEFCONFIG) defconfig
endif
$(LIBPAYLOAD_CONFIG_H): $(LIBPAYLOAD_DOTCONFIG)
$(MAKE) -C $(LIBPAYLOAD_SRC) $(LIBPAYLOAD_OPTS) $(LIBPAYLOAD_CONFIG_H)
oldconfig: lp-oldconfig
lp-oldconfig:
[ ! -f $(LIBPAYLOAD_DOTCONFIG) ] || \
$(MAKE) -C $(LIBPAYLOAD_SRC) $(LIBPAYLOAD_OPTS) oldconfig
force-relay:
$(LIBPAYLOAD): lp-defconfig | $(LIBPAYLOAD_CONFIG_H)
lp-%: force-relay
$(MAKE) -C $(LIBPAYLOAD_SRC) $(LIBPAYLOAD_OPTS) $*
$(LIBPAYLOAD): force-relay | $(LIBPAYLOAD_CONFIG_H)
$(MAKE) -C $(LIBPAYLOAD_SRC) $(LIBPAYLOAD_OPTS)
$(shell mkdir -p $(sort $(dir $(OBJS))))
.PHONY: oldconfig lp-oldconfig defconfig lp-defconfig
.PHONY: force-relay
else # %clean,$(MAKECMDGOALS)