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build: fix external module symbol collection if build_dir is a symlink

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e26ffb31dfa30d498b963a86d231835e3af7d3df fixed only embedded modules
symbol collection. If we are building external modules, like broadcom-wl
or lantiq dsl stuff then modules which do EXPORT_SYMBOL have unresolved
paths in Module.symvers and external module which depend on other
external modules will have empty dependencies, leading to broken
module loading.
This was discussed on IRC with Jonas some time ago.
Fix this by handling both resolved and unresolved paths.

Fixes: e26ffb31dfa3 ("build: fix module symbol collection if build_dir is a symlink")
Signed-off-by: Roman Yeryomin <roman@advem.lv>
[jonas.gorski@gmail.com: add appropriate fixes tag]
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
This commit is contained in:
Roman Yeryomin 2019-04-12 18:26:03 +03:00 committed by Jonas Gorski
parent 24e09bac48
commit 94464cfca2
1 changed files with 4 additions and 1 deletions
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5
include/kernel.mk
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@ -141,7 +141,10 @@ endef
define collect_module_symvers
for subdir in $(PKG_EXTMOD_SUBDIRS); do \
grep -F $$$$(readlink -f $(PKG_BUILD_DIR)) $(PKG_BUILD_DIR)/$$$$subdir/Module.symvers >> $(PKG_BUILD_DIR)/Module.symvers.tmp; \
realdir=$$$$(readlink -f $(PKG_BUILD_DIR)); \
grep -F $(PKG_BUILD_DIR) $(PKG_BUILD_DIR)/$$$$subdir/Module.symvers >> $(PKG_BUILD_DIR)/Module.symvers.tmp; \
[ "$(PKG_BUILD_DIR)" = "$$$$realdir" ] || \
grep -F $$$$realdir $(PKG_BUILD_DIR)/$$$$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