c65612fff8
Since the introduction of _KCONFIG_DEFCONFIG in 8ef62b99, the package's
.config file no longer depends on anything (unless a fragment is
defined). Therefore, there is no dependency anymore between .config
and <pkg>-patch. Thus, it is possible that the .config file is
attempted to be built before the package is extracted and patched.
Usually this works out OK because <pkg>-patch will always be done
before <pkg>-configure, but it will fail when the user calls
<pkg>-menuconfig explicitly. It will also fail when we enable
top-level parallel build.
To solve this, just add an explicit order-only dependency on
<pkg>-patch. It really is only necessary when _KCONFIG_DEFCONFIG is
defined and _KCONFIG_FRAGMENT_FILES is not, but it doesn't hurt to
add it unconditionally.
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Reported-by: FrAnKenStEiN MC <chfakht@gmail.com>
Acked-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
210 lines
9.1 KiB
Makefile
210 lines
9.1 KiB
Makefile
################################################################################
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# Kconfig package infrastructure
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#
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# This file implements an infrastructure that eases development of
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# package .mk files for packages that use kconfig for configuration files.
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# It is based on the generic-package infrastructure, and inherits all of its
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# features.
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#
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# See the Buildroot documentation for details on the usage of this
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# infrastructure.
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#
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################################################################################
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################################################################################
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# inner-kconfig-package -- generates the make targets needed to support a
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# kconfig package
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#
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# argument 1 is the lowercase package name
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# argument 2 is the uppercase package name, including a HOST_ prefix
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# for host packages
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# argument 3 is the uppercase package name, without the HOST_ prefix
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# for host packages
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# argument 4 is the type (target or host)
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################################################################################
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define inner-kconfig-package
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# Call the generic package infrastructure to generate the necessary
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# make targets.
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# Note: this must be done _before_ attempting to use $$($(2)_DIR) in a
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# dependency expression
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$(call inner-generic-package,$(1),$(2),$(3),$(4))
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# Default values
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$(2)_KCONFIG_EDITORS ?= menuconfig
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$(2)_KCONFIG_OPTS ?=
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$(2)_KCONFIG_FIXUP_CMDS ?=
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$(2)_KCONFIG_FRAGMENT_FILES ?=
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# The config file as well as the fragments could be in-tree, so before
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# depending on them the package should be extracted (and patched) first.
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#
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# Since those files only have a order-only dependency, make would treat
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# any missing one as a "force" target:
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# https://www.gnu.org/software/make/manual/make.html#Force-Targets
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# and would forcibly any rule that depend on those files, causing a
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# rebuild of the kernel each time make is called.
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#
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# So, we provide a recipe that checks all of those files exist, to
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# overcome that standard make behaviour.
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#
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$$($(2)_KCONFIG_FILE) $$($(2)_KCONFIG_FRAGMENT_FILES): | $(1)-patch
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for f in $$($(2)_KCONFIG_FILE) $$($(2)_KCONFIG_FRAGMENT_FILES); do \
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if [ ! -f "$$$${f}" ]; then \
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printf "Kconfig fragment '%s' for '%s' does not exist\n" "$$$${f}" "$(1)"; \
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exit 1; \
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fi; \
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done
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# The specified source configuration file and any additional configuration file
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# fragments are merged together to .config, after the package has been patched.
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# Since the file could be a defconfig file it needs to be expanded to a
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# full .config first. We use 'make oldconfig' because this can be safely
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# done even when the package does not support defconfigs.
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$$($(2)_DIR)/.config: $$($(2)_KCONFIG_FILE) $$($(2)_KCONFIG_FRAGMENT_FILES)
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$$(if $$($(2)_KCONFIG_DEFCONFIG), \
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$$($(2)_MAKE_ENV) $$(MAKE) -C $$($(2)_DIR) \
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$$($(2)_KCONFIG_OPTS) $$($(2)_KCONFIG_DEFCONFIG), \
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cp $$($(2)_KCONFIG_FILE) $$(@))
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support/kconfig/merge_config.sh -m -O $$(@D) \
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$$(@) $$($(2)_KCONFIG_FRAGMENT_FILES)
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$$(Q)yes "" | $$($(2)_MAKE_ENV) $$(MAKE) -C $$($(2)_DIR) \
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$$($(2)_KCONFIG_OPTS) oldconfig
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# If _KCONFIG_FILE or _KCONFIG_FRAGMENT_FILES exists, this dependency is
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# already implied, but if we only have a _KCONFIG_DEFCONFIG we have to add
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# it explicitly. It doesn't hurt to always have it though.
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$$($(2)_DIR)/.config: | $(1)-patch
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# In order to get a usable, consistent configuration, some fixup may be needed.
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# The exact rules are specified by the package .mk file.
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define $(2)_FIXUP_DOT_CONFIG
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$$($(2)_KCONFIG_FIXUP_CMDS)
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$$(Q)yes "" | $$($(2)_MAKE_ENV) $$(MAKE) -C $$($(2)_DIR) \
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$$($(2)_KCONFIG_OPTS) oldconfig
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$$(Q)touch $$($(2)_DIR)/.stamp_kconfig_fixup_done
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endef
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$$($(2)_DIR)/.stamp_kconfig_fixup_done: $$($(2)_DIR)/.config
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$$(call $(2)_FIXUP_DOT_CONFIG)
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# Before running configure, the configuration file should be present and fixed
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$$($(2)_TARGET_CONFIGURE): $$($(2)_DIR)/.stamp_kconfig_fixup_done
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# Only enable the foo-*config targets when the package is actually enabled.
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# Note: the variable $(2)_KCONFIG_VAR is not related to the kconfig
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# infrastructure, but defined by pkg-generic.mk. The generic infrastructure is
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# already called above, so we can effectively use this variable.
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ifeq ($$($$($(2)_KCONFIG_VAR)),y)
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ifeq ($$(BR_BUILDING),y)
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# Either FOO_KCONFIG_FILE or FOO_KCONFIG_DEFCONFIG is required...
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ifeq ($$(or $$($(2)_KCONFIG_FILE),$$($(2)_KCONFIG_DEFCONFIG)),)
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$$(error Internal error: no value specified for $(2)_KCONFIG_FILE or $(2)_KCONFIG_DEFCONFIG)
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endif
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# ... but not both:
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ifneq ($$(and $$($(2)_KCONFIG_FILE),$$($(2)_KCONFIG_DEFCONFIG)),)
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$$(error Internal error: $(2)_KCONFIG_FILE and $(2)_KCONFIG_DEFCONFIG are mutually exclusive but both are defined)
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endif
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endif
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# For the configurators, we do want to use the system-provided host
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# tools, not the ones we build. This is particularly true for
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# pkg-config; if we use our pkg-config (from host-pkgconf), then it
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# would not look for the .pc from the host, but we do need them,
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# especially to find ncurses, GTK+, Qt (resp. for menuconfig and
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# nconfig, gconfig, xconfig).
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# So we simply remove our PATH and PKG_CONFIG_* variables.
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$(2)_CONFIGURATOR_MAKE_ENV = \
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$$(filter-out PATH=% PKG_CONFIG=% PKG_CONFIG_SYSROOT_DIR=% PKG_CONFIG_LIBDIR=%,$$($(2)_MAKE_ENV))
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# Configuration editors (menuconfig, ...)
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#
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# We need to apply the configuration fixups right after a configuration
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# editor exits, so that it is possible to save the configuration right
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# after exiting an editor, and so the user always sees a .config file
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# that is clean wrt. our requirements.
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#
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# Because commands in $(1)_FIXUP_KCONFIG are probably using $(@D), we
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# need to have a valid @D set. But, because the configurators rules are
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# not real files and do not contain the path to the package build dir,
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# @D would be just '.' in this case. So, we use an intermediate rule
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# with a stamp-like file which path is in the package build dir, so we
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# end up having a valid @D.
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#
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$$(addprefix $(1)-,$$($(2)_KCONFIG_EDITORS)): $(1)-%: $$($(2)_DIR)/.kconfig_editor_%
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$$($(2)_DIR)/.kconfig_editor_%: $$($(2)_DIR)/.stamp_kconfig_fixup_done
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$$($(2)_CONFIGURATOR_MAKE_ENV) $$(MAKE) -C $$($(2)_DIR) \
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$$($(2)_KCONFIG_OPTS) $$(*)
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rm -f $$($(2)_DIR)/.stamp_{kconfig_fixup_done,configured,built}
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rm -f $$($(2)_DIR)/.stamp_{target,staging,images}_installed
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$$(call $(2)_FIXUP_DOT_CONFIG)
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# Saving back the configuration
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#
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# Ideally, that should directly depend on $$($(2)_DIR)/.stamp_kconfig_fixup_done,
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# but that breaks the use-case in PR-8156 (from a clean tree):
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# make menuconfig <- enable kernel, use an in-tree defconfig, save and exit
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# make linux-menuconfig <- enable/disable whatever option, save and exit
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# make menuconfig <- change to use a custom defconfig file, set a path, save and exit
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# make linux-update-config <- should save to the new custom defconfig file
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#
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# Because of that use-case, saving the configuration can *not* directly
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# depend on the stamp file, because it itself depends on the .config,
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# which in turn depends on the (newly-set an non-existent) custom
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# defconfig file.
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#
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# Instead, we use an PHONY rule that will catch that situation.
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#
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$(1)-check-configuration-done:
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@if [ ! -f $$($(2)_DIR)/.stamp_kconfig_fixup_done ]; then \
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echo "$(1) is not yet configured"; \
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exit 1; \
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fi
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$(1)-savedefconfig: $(1)-check-configuration-done
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$$($(2)_MAKE_ENV) $$(MAKE) -C $$($(2)_DIR) \
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$$($(2)_KCONFIG_OPTS) savedefconfig
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# Target to copy back the configuration to the source configuration file
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# Even though we could use 'cp --preserve-timestamps' here, the separate
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# cp and 'touch --reference' is used for symmetry with $(1)-update-defconfig.
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$(1)-update-config: $(1)-check-configuration-done
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@$$(if $$($(2)_KCONFIG_FRAGMENT_FILES), \
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echo "Unable to perform $(1)-update-config when fragment files are set"; exit 1)
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@$$(if $$($(2)_KCONFIG_DEFCONFIG), \
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echo "Unable to perform $(1)-update-config when using a defconfig rule"; exit 1)
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cp -f $$($(2)_DIR)/.config $$($(2)_KCONFIG_FILE)
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touch --reference $$($(2)_DIR)/.config $$($(2)_KCONFIG_FILE)
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# Note: make sure the timestamp of the stored configuration is not newer than
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# the .config to avoid a useless rebuild. Note that, contrary to
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# $(1)-update-config, the reference for 'touch' is _not_ the file from which
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# we copy.
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$(1)-update-defconfig: $(1)-savedefconfig
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@$$(if $$($(2)_KCONFIG_FRAGMENT_FILES), \
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echo "Unable to perform $(1)-update-defconfig when fragment files are set"; exit 1)
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@$$(if $$($(2)_KCONFIG_DEFCONFIG), \
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echo "Unable to perform $(1)-update-defconfig when using a defconfig rule"; exit 1)
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cp -f $$($(2)_DIR)/defconfig $$($(2)_KCONFIG_FILE)
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touch --reference $$($(2)_DIR)/.config $$($(2)_KCONFIG_FILE)
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endif # package enabled
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.PHONY: \
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$(1)-update-config \
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$(1)-update-defconfig \
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$(1)-savedefconfig \
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$(1)-check-configuration-done \
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$$($(2)_DIR)/.kconfig_editor_% \
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$$(addprefix $(1)-,$$($(2)_KCONFIG_EDITORS))
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endef # inner-kconfig-package
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################################################################################
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# kconfig-package -- the target generator macro for kconfig packages
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################################################################################
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kconfig-package = $(call inner-kconfig-package,$(pkgname),$(call UPPERCASE,$(pkgname)),$(call UPPERCASE,$(pkgname)),target)
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