mirror of
https://git.busybox.net/buildroot.git
synced 2024-11-27 23:43:34 +08:00
009d31b438
The kconfig infra defines a 'PKG_KCONFIG_MAKE' var that wraps all the standard kconfig options. Switch to this so we aren't duplicating the logic. Signed-off-by: Brandon Maier <brandon.maier@collins.com> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
329 lines
14 KiB
Makefile
329 lines
14 KiB
Makefile
################################################################################
|
|
# Kconfig package infrastructure
|
|
#
|
|
# This file implements an infrastructure that eases development of
|
|
# package .mk files for packages that use kconfig for configuration files.
|
|
# It is based on the generic-package infrastructure, and inherits all of its
|
|
# features.
|
|
#
|
|
# See the Buildroot documentation for details on the usage of this
|
|
# infrastructure.
|
|
#
|
|
################################################################################
|
|
|
|
# Macro to update back the custom (def)config file
|
|
# Must only be called if $(PKG)_KCONFIG_FILE is set and $(PKG)_KCONFIG_DEFCONFIG)
|
|
# is not set.
|
|
# $(1): file to copy from
|
|
define kconfig-package-update-config
|
|
@$(if $($(PKG)_KCONFIG_FRAGMENT_FILES), \
|
|
echo "Unable to perform $(@) when fragment files are set"; exit 1)
|
|
$(Q)if [ -d $($(PKG)_KCONFIG_FILE) ]; then \
|
|
echo "Unable to perform $(@) when $($(PKG)_KCONFIG_FILE) is a directory"; \
|
|
exit 1; \
|
|
fi
|
|
$(Q)mkdir -p $(dir $($(PKG)_KCONFIG_FILE))
|
|
cp -f $($(PKG)_DIR)/$(1) $($(PKG)_KCONFIG_FILE)
|
|
$(Q)touch --reference $($(PKG)_DIR)/$($(PKG)_KCONFIG_STAMP_DOTCONFIG) $($(PKG)_KCONFIG_FILE)
|
|
endef
|
|
|
|
PKG_KCONFIG_COMMON_OPTS = \
|
|
HOSTCC="$(HOSTCC_NOCCACHE)"
|
|
|
|
# Macro to save the defconfig file
|
|
# $(1): the name of the package in upper-case letters
|
|
define kconfig-package-savedefconfig
|
|
$($(1)_KCONFIG_MAKE) savedefconfig
|
|
endef
|
|
|
|
# The correct way to regenerate a .config file is to use 'make olddefconfig'.
|
|
# For historical reasons, the target name is 'oldnoconfig' between Linux kernel
|
|
# versions 2.6.36 and 3.6, and remains as an alias in later versions.
|
|
# In older versions, and in some other projects that use kconfig, the target is
|
|
# not supported at all, and we use 'yes "" | make oldconfig' as a fallback
|
|
# only, as this can fail in complex cases.
|
|
# $(1): the name of the package in upper-case letters
|
|
define kconfig-package-regen-dot-config
|
|
$(Q)[ -e $($(1)_DIR)/.br_regen_dot_config ] || \
|
|
$($(1)_KCONFIG_MAKE) -pn config 2>/dev/null \
|
|
| sed 's/^\([_0-9a-zA-Z]*config\):.*/\1/ p; d' >$($(1)_DIR)/.br_regen_dot_config
|
|
$(Q)if grep -q '\bolddefconfig\b' $($(1)_DIR)/.br_regen_dot_config; then \
|
|
$($(1)_KCONFIG_MAKE) olddefconfig; \
|
|
elif grep -q '\boldnoconfig\b' $($(1)_DIR)/.br_regen_dot_config; then \
|
|
$($(1)_KCONFIG_MAKE) oldnoconfig; \
|
|
else \
|
|
yes "" | $($(1)_KCONFIG_MAKE) oldconfig; \
|
|
fi
|
|
endef
|
|
|
|
# Macro to create a .config file where all given fragments are merged into.
|
|
# $(1): the name of the package in upper-case letters
|
|
# $(2): name of the .config file
|
|
# $(3): fragment files to merge
|
|
define kconfig-package-merge-config
|
|
$(Q)$(if $($(1)_KCONFIG_DEFCONFIG),\
|
|
$($(1)_KCONFIG_MAKE) $($(1)_KCONFIG_DEFCONFIG),\
|
|
$(INSTALL) -m 0644 -D $($(1)_KCONFIG_FILE) $(2))
|
|
$(Q)support/kconfig/merge_config.sh -m -O $(dir $(2)) $(2) $(3)
|
|
$(call kconfig-package-regen-dot-config,$(1))
|
|
endef
|
|
|
|
################################################################################
|
|
# inner-kconfig-package -- generates the make targets needed to support a
|
|
# kconfig package
|
|
#
|
|
# argument 1 is the lowercase package name
|
|
# argument 2 is the uppercase package name, including a HOST_ prefix
|
|
# for host packages
|
|
# argument 3 is the uppercase package name, without the HOST_ prefix
|
|
# for host packages
|
|
# argument 4 is the type (target or host)
|
|
################################################################################
|
|
|
|
define inner-kconfig-package
|
|
|
|
# Default values
|
|
$(2)_MAKE ?= $$(MAKE)
|
|
$(2)_KCONFIG_EDITORS ?= menuconfig
|
|
$(2)_KCONFIG_DOTCONFIG ?= .config
|
|
$(2)_KCONFIG_SUPPORTS_DEFCONFIG ?= YES
|
|
|
|
# Register the kconfig dependencies as regular dependencies, so that
|
|
# they are also accounted for in the generated graphs.
|
|
$(2)_DEPENDENCIES += $$($(2)_KCONFIG_DEPENDENCIES)
|
|
|
|
# Generate the kconfig-related help: one entry for each editor.
|
|
# Additionally, if the package is *not* using an in-tree defconfig
|
|
# name, an entry for updating the package configuration file.
|
|
ifndef $(2)_HELP_CMDS
|
|
define $(2)_HELP_CMDS
|
|
$$(foreach editor, $$($(2)_KCONFIG_EDITORS), \
|
|
@printf ' %-22s - Run %s %s\n' $(1)-$$(editor) $(1) $$(editor)
|
|
)
|
|
$$(if $$($(2)_KCONFIG_DEFCONFIG),,\
|
|
$$(if $$(filter YES,$$($(2)_KCONFIG_SUPPORTS_DEFCONFIG)),\
|
|
@printf ' %-22s - Save the %s configuration as a defconfig file\n' \
|
|
$(1)-update-defconfig $(1)
|
|
@printf ' %-22s to %s\n' '' $$($(2)_KCONFIG_FILE)
|
|
@printf ' %-22s (or override with %s_KCONFIG_FILE)\n' '' $(2)
|
|
)
|
|
@printf ' %-22s - Save the %s configuration as a full .config file\n' \
|
|
$(1)-update-config $(1)
|
|
@printf ' %-22s to %s\n' '' $$($(2)_KCONFIG_FILE)
|
|
@printf ' %-22s (or override with %s_KCONFIG_FILE)\n' '' $(2)
|
|
)
|
|
endef
|
|
endif
|
|
|
|
# Call the generic package infrastructure to generate the necessary
|
|
# make targets.
|
|
# Note: this must be done _before_ attempting to use $$($(2)_DIR) in a
|
|
# dependency expression
|
|
$(call inner-generic-package,$(1),$(2),$(3),$(4))
|
|
|
|
# Do not use $(2)_KCONFIG_DOTCONFIG as stamp file, because the package
|
|
# buildsystem (e.g. linux >= 4.19) may touch it, thus rendering our
|
|
# timestamps out of date, thus re-trigerring the build of the package.
|
|
# Instead, use a specific file of our own as timestamp.
|
|
$(2)_KCONFIG_STAMP_DOTCONFIG = .stamp_dotconfig
|
|
|
|
# The config file as well as the fragments could be in-tree, so before
|
|
# depending on them the package should be extracted (and patched) first.
|
|
#
|
|
# Since those files only have a order-only dependency, make would treat
|
|
# any missing one as a "force" target:
|
|
# https://www.gnu.org/software/make/manual/make.html#Force-Targets
|
|
# and would forcibly any rule that depend on those files, causing a
|
|
# rebuild of the kernel each time make is called.
|
|
#
|
|
# So, we provide a recipe that checks all of those files exist, to
|
|
# overcome that standard make behaviour.
|
|
#
|
|
$$($(2)_KCONFIG_FILE) $$($(2)_KCONFIG_FRAGMENT_FILES): | $(1)-patch
|
|
for f in $$($(2)_KCONFIG_FILE) $$($(2)_KCONFIG_FRAGMENT_FILES); do \
|
|
if [ ! -f "$$$${f}" ]; then \
|
|
printf "Kconfig file or fragment '%s' for '%s' does not exist\n" "$$$${f}" "$(1)"; \
|
|
exit 1; \
|
|
fi; \
|
|
done
|
|
|
|
$(2)_KCONFIG_MAKE = \
|
|
$$($(2)_MAKE_ENV) $$($(2)_MAKE) -C $$($(2)_DIR) \
|
|
$$(PKG_KCONFIG_COMMON_OPTS) $$($(2)_KCONFIG_OPTS)
|
|
|
|
# The specified source configuration file and any additional configuration file
|
|
# fragments are merged together to .config, after the package has been patched.
|
|
# Since the file could be a defconfig file it needs to be expanded to a
|
|
# full .config first.
|
|
$$($(2)_DIR)/$$($(2)_KCONFIG_STAMP_DOTCONFIG): $$($(2)_KCONFIG_FILE) $$($(2)_KCONFIG_FRAGMENT_FILES)
|
|
$$(call prepare-per-package-directory,$$($(2)_KCONFIG_DEPENDENCIES))
|
|
$$(call kconfig-package-merge-config,$(2),$$(@D)/$$($(2)_KCONFIG_DOTCONFIG),\
|
|
$$($(2)_KCONFIG_FRAGMENT_FILES))
|
|
$$(Q)touch $$(@D)/$$($(2)_KCONFIG_STAMP_DOTCONFIG)
|
|
|
|
# If _KCONFIG_FILE or _KCONFIG_FRAGMENT_FILES exists, this dependency is
|
|
# already implied, but if we only have a _KCONFIG_DEFCONFIG we have to add
|
|
# it explicitly. It doesn't hurt to always have it though.
|
|
$$($(2)_DIR)/$$($(2)_KCONFIG_STAMP_DOTCONFIG): | $(1)-patch
|
|
|
|
# Some packages may need additional tools to be present by the time their
|
|
# kconfig structure is parsed (e.g. the linux kernel may need to call to
|
|
# the compiler to test its features).
|
|
$$($(2)_DIR)/$$($(2)_KCONFIG_STAMP_DOTCONFIG): | $$($(2)_KCONFIG_DEPENDENCIES)
|
|
|
|
# In order to get a usable, consistent configuration, some fixup may be needed.
|
|
# The exact rules are specified by the package .mk file.
|
|
define $(2)_FIXUP_DOT_CONFIG
|
|
$$($(2)_KCONFIG_FIXUP_CMDS)
|
|
$$(call kconfig-package-regen-dot-config,$(2))
|
|
$$(Q)touch $$($(2)_DIR)/.stamp_kconfig_fixup_done
|
|
endef
|
|
|
|
$$($(2)_DIR)/.stamp_kconfig_fixup_done: PKG=$(2)
|
|
$$($(2)_DIR)/.stamp_kconfig_fixup_done: $$($(2)_DIR)/$$($(2)_KCONFIG_STAMP_DOTCONFIG)
|
|
$$($(2)_FIXUP_DOT_CONFIG)
|
|
|
|
# Before running configure, the configuration file should be present and fixed
|
|
$$($(2)_TARGET_CONFIGURE): $$($(2)_DIR)/.stamp_kconfig_fixup_done
|
|
|
|
# Force olddefconfig again on -reconfigure
|
|
$(1)-clean-for-reconfigure: $(1)-clean-kconfig-for-reconfigure
|
|
|
|
$(1)-clean-kconfig-for-reconfigure:
|
|
rm -f $$($(2)_DIR)/$$($(2)_KCONFIG_STAMP_DOTCONFIG)
|
|
|
|
# Only enable the foo-*config targets when the package is actually enabled.
|
|
# Note: the variable $(2)_KCONFIG_VAR is not related to the kconfig
|
|
# infrastructure, but defined by pkg-generic.mk. The generic infrastructure is
|
|
# already called above, so we can effectively use this variable.
|
|
ifeq ($$($$($(2)_KCONFIG_VAR)),y)
|
|
|
|
ifeq ($$(BR_BUILDING),y)
|
|
# Either FOO_KCONFIG_FILE or FOO_KCONFIG_DEFCONFIG is required...
|
|
ifeq ($$(or $$($(2)_KCONFIG_FILE),$$($(2)_KCONFIG_DEFCONFIG)),)
|
|
$$(error Internal error: no value specified for $(2)_KCONFIG_FILE or $(2)_KCONFIG_DEFCONFIG)
|
|
endif
|
|
# ... but not both:
|
|
ifneq ($$(and $$($(2)_KCONFIG_FILE),$$($(2)_KCONFIG_DEFCONFIG)),)
|
|
$$(error Internal error: $(2)_KCONFIG_FILE and $(2)_KCONFIG_DEFCONFIG are mutually exclusive but both are defined)
|
|
endif
|
|
endif
|
|
|
|
# For the configurators, we do want to use the system-provided host
|
|
# tools, not the ones we build. This is particularly true for
|
|
# pkg-config; if we use our pkg-config (from host-pkgconf), then it
|
|
# would not look for the .pc from the host, but we do need them,
|
|
# especially to find ncurses, GTK+, Qt (resp. for menuconfig and
|
|
# nconfig, gconfig, xconfig).
|
|
# So we simply remove our PATH and PKG_CONFIG_* variables.
|
|
$(2)_CONFIGURATOR_MAKE_ENV = \
|
|
$$(filter-out PATH=% PKG_CONFIG=% PKG_CONFIG_SYSROOT_DIR=% \
|
|
PKG_CONFIG_ALLOW_SYSTEM_CFLAGS=% PKG_CONFIG_ALLOW_SYSTEM_LIBS=% \
|
|
PKG_CONFIG_LIBDIR=%,$$($(2)_MAKE_ENV)) \
|
|
PKG_CONFIG_PATH="$(HOST_PKG_CONFIG_PATH)"
|
|
|
|
# Configuration editors (menuconfig, ...)
|
|
#
|
|
# We need to apply the configuration fixups right after a configuration
|
|
# editor exits, so that it is possible to save the configuration right
|
|
# after exiting an editor, and so the user always sees a .config file
|
|
# that is clean wrt. our requirements.
|
|
#
|
|
# Because commands in $(1)_FIXUP_KCONFIG are probably using $(@D), we
|
|
# need to have a valid @D set. But, because the configurators rules are
|
|
# not real files and do not contain the path to the package build dir,
|
|
# @D would be just '.' in this case. So, we use an intermediate rule
|
|
# with a stamp-like file which path is in the package build dir, so we
|
|
# end up having a valid @D.
|
|
#
|
|
$$(addprefix $(1)-,$$($(2)_KCONFIG_EDITORS)): $(1)-%: $$($(2)_DIR)/.kconfig_editor_%
|
|
$$($(2)_DIR)/.kconfig_editor_%: PKG=$(2)
|
|
$$($(2)_DIR)/.kconfig_editor_%: $$($(2)_DIR)/.stamp_kconfig_fixup_done
|
|
$$($(2)_CONFIGURATOR_MAKE_ENV) $$($(2)_MAKE) -C $$($(2)_DIR) \
|
|
$$(PKG_KCONFIG_COMMON_OPTS) $$($(2)_KCONFIG_OPTS) $$(*)
|
|
rm -f $$($(2)_DIR)/.stamp_{kconfig_fixup_done,configured,built}
|
|
rm -f $$($(2)_DIR)/.stamp_{target,staging,images}_installed
|
|
$$($(2)_FIXUP_DOT_CONFIG)
|
|
|
|
# Saving back the configuration
|
|
#
|
|
# Ideally, that should directly depend on $$($(2)_DIR)/.stamp_kconfig_fixup_done,
|
|
# but that breaks the use-case in PR-8156 (from a clean tree):
|
|
# make menuconfig <- enable kernel, use an in-tree defconfig, save and exit
|
|
# make linux-menuconfig <- enable/disable whatever option, save and exit
|
|
# make menuconfig <- change to use a custom defconfig file, set a path, save and exit
|
|
# make linux-update-config <- should save to the new custom defconfig file
|
|
#
|
|
# Because of that use-case, saving the configuration can *not* directly
|
|
# depend on the stamp file, because it itself depends on the .config,
|
|
# which in turn depends on the (newly-set an non-existent) custom
|
|
# defconfig file.
|
|
#
|
|
# Instead, we use a PHONY rule that will catch that situation.
|
|
#
|
|
$(1)-check-configuration-done:
|
|
@if [ ! -f $$($(2)_DIR)/.stamp_kconfig_fixup_done ]; then \
|
|
echo "$(1) is not yet configured"; \
|
|
exit 1; \
|
|
fi
|
|
|
|
ifeq ($$($(2)_KCONFIG_SUPPORTS_DEFCONFIG),YES)
|
|
.PHONY: $(1)-savedefconfig
|
|
$(1)-savedefconfig: PKG=$(2)
|
|
$(1)-savedefconfig: $(1)-check-configuration-done
|
|
$$(call kconfig-package-savedefconfig,$(2))
|
|
endif
|
|
|
|
ifeq ($$($(2)_KCONFIG_DEFCONFIG),)
|
|
# Target to copy back the configuration to the source configuration file
|
|
# Even though we could use 'cp --preserve-timestamps' here, the separate
|
|
# cp and 'touch --reference' is used for symmetry with $(1)-update-defconfig.
|
|
.PHONY: $(1)-update-config
|
|
$(1)-update-config: PKG=$(2)
|
|
$(1)-update-config: $(1)-check-configuration-done
|
|
$$(call kconfig-package-update-config,$$($(2)_KCONFIG_DOTCONFIG))
|
|
|
|
ifeq ($$($(2)_KCONFIG_SUPPORTS_DEFCONFIG),YES)
|
|
# Note: make sure the timestamp of the stored configuration is not newer than
|
|
# the .config to avoid a useless rebuild. Note that, contrary to
|
|
# $(1)-update-config, the reference for 'touch' is _not_ the file from which
|
|
# we copy.
|
|
.PHONY: $(1)-update-defconfig
|
|
$(1)-update-defconfig: PKG=$(2)
|
|
$(1)-update-defconfig: $(1)-savedefconfig
|
|
$$(call kconfig-package-update-config,defconfig)
|
|
endif
|
|
|
|
endif
|
|
|
|
# Target to output differences between the configuration obtained via the
|
|
# defconfig + fragments (if any) and the current configuration.
|
|
# Note: it preserves the timestamp of the current configuration when moving it
|
|
# around.
|
|
$(1)-diff-config: PKG=$(2)
|
|
$(1)-diff-config: $(1)-check-configuration-done
|
|
$$(Q)cp -a $$($(2)_DIR)/$$($(2)_KCONFIG_DOTCONFIG) $$($(2)_DIR)/.config.dc.bak
|
|
$$(call kconfig-package-merge-config,$(2),$$($(2)_DIR)/$$($(2)_KCONFIG_DOTCONFIG),\
|
|
$$($(2)_KCONFIG_FRAGMENT_FILES))
|
|
$$(Q)utils/diffconfig $$($(2)_DIR)/$$($(2)_KCONFIG_DOTCONFIG) \
|
|
$$($(2)_DIR)/.config.dc.bak
|
|
$$(Q)cp -a $$($(2)_DIR)/.config.dc.bak $$($(2)_DIR)/$$($(2)_KCONFIG_DOTCONFIG)
|
|
$$(Q)rm -f $$($(2)_DIR)/.config.dc.bak
|
|
|
|
|
|
endif # package enabled
|
|
|
|
.PHONY: \
|
|
$(1)-diff-config \
|
|
$(1)-check-configuration-done \
|
|
$$($(2)_DIR)/.kconfig_editor_% \
|
|
$$(addprefix $(1)-,$$($(2)_KCONFIG_EDITORS))
|
|
|
|
endef # inner-kconfig-package
|
|
|
|
################################################################################
|
|
# kconfig-package -- the target generator macro for kconfig packages
|
|
################################################################################
|
|
|
|
kconfig-package = $(call inner-kconfig-package,$(pkgname),$(call UPPERCASE,$(pkgname)),$(call UPPERCASE,$(pkgname)),target)
|