build: speed up kernel symbol export stripping
GNU grep has a high per-expression setup overhead when compiling regular expressions. Use -F to force it to interpret the input as fixed strings, which is much faster (fraction of a second instead of multiple minutes). Signed-off-by: Felix Fietkau <nbd@openwrt.org> SVN-Revision: 39049
This commit is contained in:
parent
6cb542d6a4
commit
5a6a47e431
1 changed files with 3 additions and 3 deletions
|
@ -76,9 +76,9 @@ define BuildKernel
|
|||
xargs $(TARGET_CROSS)nm | \
|
||||
awk '$$$$1 == "U" { print $$$$2 } ' | \
|
||||
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
|
||||
$(TARGET_CROSS)nm -n $(LINUX_DIR)/vmlinux.o | grep -F ' r __ksymtab' | sed -e 's,........ r __ksymtab_,,' > $(KERNEL_BUILD_DIR)/kernel_symtab.txt
|
||||
grep -Ff $(KERNEL_BUILD_DIR)/mod_symtab.txt $(KERNEL_BUILD_DIR)/kernel_symtab.txt > $(KERNEL_BUILD_DIR)/sym_include.txt
|
||||
grep -Fvf $(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)/sym_include.txt | \
|
||||
|
|
Loading…
Reference in a new issue