Hi,
below a simple patch for the make rule, which creates the version_autogenerated.h file. Instead of just updating this file any time make is started, now the file is checked for different contents. If it differs, the version header is updated, otherwise not.
This saves unnessesary rebuilds of several files in the tree.
Regards Carsten
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diff --git a/Makefile b/Makefile index c52b21b..7999870 100755 --- a/Makefile +++ b/Makefile @@ -290,11 +290,13 @@ $(U_BOOT_NAND): $(NAND_SPL) $(obj)u-boot.bin cat $(obj)nand_spl/u-boot-spl-16k.bin $(obj)u-boot.bin > $(obj)u-boot-nand.bin
version: - @echo -n "#define U_BOOT_VERSION "U-Boot " > $(VERSION_FILE); \ - echo -n "$(U_BOOT_VERSION)" >> $(VERSION_FILE); \ + @echo -n "#define U_BOOT_VERSION "U-Boot " > $(VERSION_FILE).tmp; \ + echo -n "$(U_BOOT_VERSION)" >> $(VERSION_FILE).tmp; \ echo -n $(shell $(CONFIG_SHELL) $(TOPDIR)/tools/setlocalversion \ - $(TOPDIR)) >> $(VERSION_FILE); \ - echo """ >> $(VERSION_FILE) + $(TOPDIR)) >> $(VERSION_FILE).tmp; \ + echo """ >> $(VERSION_FILE).tmp + @diff --brief $(VERSION_FILE) $(VERSION_FILE).tmp || cp $(VERSION_FILE).tmp $(VERSION_FILE) + @rm $(VERSION_FILE).tmp
gdbtools: $(MAKE) -C tools/gdb all || exit 1