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kernel: fix stripping symbol exports

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SVN-Revision: 34458
This commit is contained in:
Felix Fietkau
2012-12-02 17:42:17 +00:00
parent d38be845f4
commit 24b31c9428
4 changed files with 83 additions and 61 deletions
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30
include/kernel-build.mk
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@@ -67,24 +67,40 @@ define BuildKernel
$(Kernel/Prepare)
touch $$@
$(KERNEL_BUILD_DIR)/symtab.txt: FORCE
$(KERNEL_BUILD_DIR)/symtab.h: FORCE
rm -f $(KERNEL_BUILD_DIR)/symtab.h
touch $(KERNEL_BUILD_DIR)/symtab.h
+$(MAKE) $(KERNEL_MAKEOPTS) vmlinux
find $(LINUX_DIR) $(STAGING_DIR_ROOT)/lib/modules -name \*.ko | \
xargs $(TARGET_CROSS)nm | \
awk '$$$$1 == "U" { print $$$$2 } ' | \
sort -u > $$@
$(KERNEL_BUILD_DIR)/symtab.h: $(KERNEL_BUILD_DIR)/symtab.txt
sort -u > $(KERNEL_BUILD_DIR)/mod_symtab.txt
$(TARGET_CROSS)nm -n $(LINUX_DIR)/vmlinux.o | grep ' r __ksymtab' | sed -e 's,........ r __ksymtab_,,' > $(KERNEL_BUILD_DIR)/kernel_symtab.txt
grep -f $(KERNEL_BUILD_DIR)/mod_symtab.txt $(KERNEL_BUILD_DIR)/kernel_symtab.txt > $(KERNEL_BUILD_DIR)/sym_include.txt
grep -vf $(KERNEL_BUILD_DIR)/mod_symtab.txt $(KERNEL_BUILD_DIR)/kernel_symtab.txt > $(KERNEL_BUILD_DIR)/sym_exclude.txt
( \
echo '#define SYMTAB_KEEP \'; \
cat $(KERNEL_BUILD_DIR)/symtab.txt | \
cat $(KERNEL_BUILD_DIR)/sym_include.txt | \
awk '{print "*(__ksymtab." $$$$1 ") \\" }'; \
echo; \
echo '#define SYMTAB_KEEP_GPL \'; \
cat $(KERNEL_BUILD_DIR)/symtab.txt | \
cat $(KERNEL_BUILD_DIR)/sym_include.txt | \
awk '{print "*(__ksymtab_gpl." $$$$1 ") \\" }'; \
echo; \
echo '#define SYMTAB_KEEP_STR \'; \
cat $(KERNEL_BUILD_DIR)/symtab.txt | \
cat $(KERNEL_BUILD_DIR)/sym_include.txt | \
awk '{print "*(__ksymtab_strings." $$$$1 ") \\" }'; \
echo; \
echo '#define SYMTAB_DISCARD \'; \
cat $(KERNEL_BUILD_DIR)/sym_exclude.txt | \
awk '{print "*(__ksymtab." $$$$1 ") \\" }'; \
echo; \
echo '#define SYMTAB_DISCARD_GPL \'; \
cat $(KERNEL_BUILD_DIR)/sym_exclude.txt | \
awk '{print "*(__ksymtab_gpl." $$$$1 ") \\" }'; \
echo; \
echo '#define SYMTAB_DISCARD_STR \'; \
cat $(KERNEL_BUILD_DIR)/sym_exclude.txt | \
awk '{print "*(__ksymtab_strings." $$$$1 ") \\" }'; \
echo; \
) > $$@