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kernel: collect module symvers for external modules

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Collect module symvers for all external modules to make them available
for modpost. This fixes dependencies for most external modules.

Example:

Before:

root@LEDE:/# modinfo mt76
module:         /lib/modules/4.4.74/mt76.ko
license:        Dual BSD/GPL
depends:

After:

root@LEDE:/# modinfo mt76
module:         /lib/modules/4.4.74/mt76.ko
license:        Dual BSD/GPL
depends:        mac80211,cfg80211

Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
This commit is contained in:
Jonas Gorski 2017-07-20 22:34:54 +02:00
parent 75021e9411
commit 2e496876c6
1 changed files with 27 additions and 0 deletions
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27
include/kernel.mk
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@ -123,6 +123,32 @@ ifdef CONFIG_USE_SPARSE
KERNEL_MAKEOPTS += C=1 CHECK=$(STAGING_DIR_HOST)/bin/sparse
endif
PKG_EXTMOD_SUBDIRS ?= .
define populate_module_symvers
cat /dev/null > $(PKG_INFO_DIR)/$(PKG_NAME).symvers; \
for subdir in $(PKG_EXTMOD_SUBDIRS); do \
cat $(PKG_INFO_DIR)/*.symvers 2>/dev/null > $(PKG_BUILD_DIR)/$$$$subdir/Module.symvers; \
done
endef
define collect_module_symvers
for subdir in $(PKG_EXTMOD_SUBDIRS); do \
grep -F $(PKG_BUILD_DIR) $(PKG_BUILD_DIR)/$$$$subdir/Module.symvers >> $(PKG_BUILD_DIR)/Module.symvers.tmp; \
done; \
sort -u $(PKG_BUILD_DIR)/Module.symvers.tmp > $(PKG_BUILD_DIR)/Module.symvers; \
mv $(PKG_BUILD_DIR)/Module.symvers $(PKG_INFO_DIR)/$(PKG_NAME).symvers
endef
define KernelPackage/hooks
ifneq ($(PKG_NAME),kernel)
Hooks/Compile/Pre += populate_module_symvers
Hooks/Compile/Post += collect_module_symvers
endif
define KernelPackage/hooks
endef
endef
define KernelPackage/Defaults
FILES:=
AUTOLOAD:=
@ -230,6 +256,7 @@ $(call KernelPackage/$(1)/config)
endif
$(call KernelPackage/depends)
$(call KernelPackage/hooks)
ifneq ($(if $(filter-out %=y %=n %=m,$(KCONFIG)),$(filter m y,$(foreach c,$(filter-out %=y %=n %=m,$(KCONFIG)),$($(c)))),.),)
ifneq ($(strip $(FILES)),)