Update U-Boot's build timestamp on every compile

[platform/kernel/u-boot.git] / Makefile

diff --git a/Makefile b/Makefile
index 4eff1b5..11fc3b7 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -30,6 +30,7 @@ U_BOOT_VERSION = $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION)
 else
 U_BOOT_VERSION = $(VERSION).$(PATCHLEVEL)$(EXTRAVERSION)
 endif
+TIMESTAMP_FILE = $(obj)include/timestamp_autogenerated.h
 VERSION_FILE = $(obj)include/version_autogenerated.h
 
 HOSTARCH := $(shell uname -m | \
@@ -261,7 +262,7 @@ LIBS += api/libapi.a
 LIBS += post/libpost.a
 
 LIBS := $(addprefix $(obj),$(LIBS))
-.PHONY : $(LIBS) $(VERSION_FILE)
+.PHONY : $(LIBS) $(TIMESTAMP_FILE) $(VERSION_FILE)
 
 LIBBOARD = board/$(BOARDDIR)/lib$(BOARD).a
 LIBBOARD := $(addprefix $(obj),$(LIBBOARD))
@@ -353,13 +354,13 @@ $(SUBDIRS):       depend $(obj)include/autoconf.mk
 $(LDSCRIPT):   depend $(obj)include/autoconf.mk
                $(MAKE) -C $(dir $@) $(notdir $@)
 
-$(NAND_SPL):   $(VERSION_FILE) $(obj)include/autoconf.mk
+$(NAND_SPL):   $(TIMESTAMP_FILE) $(VERSION_FILE) $(obj)include/autoconf.mk
                $(MAKE) -C nand_spl/board/$(BOARDDIR) all
 
 $(U_BOOT_NAND):        $(NAND_SPL) $(obj)u-boot.bin $(obj)include/autoconf.mk
                cat $(obj)nand_spl/u-boot-spl-16k.bin $(obj)u-boot.bin > $(obj)u-boot-nand.bin
 
-$(ONENAND_IPL):        $(VERSION_FILE) $(obj)include/autoconf.mk
+$(ONENAND_IPL):        $(TIMESTAMP_FILE) $(VERSION_FILE) $(obj)include/autoconf.mk
                $(MAKE) -C onenand_ipl/board/$(BOARDDIR) all
 
 $(U_BOOT_ONENAND):     $(ONENAND_IPL) $(obj)u-boot.bin $(obj)include/autoconf.mk
@@ -372,6 +373,10 @@ $(VERSION_FILE):
                 ) > $@.tmp
                @cmp -s $@ $@.tmp && rm -f $@.tmp || mv -f $@.tmp $@
 
+$(TIMESTAMP_FILE):
+               @date +'#define U_BOOT_DATE "%b %d %C%y"' > $@
+               @date +'#define U_BOOT_TIME "%T"' >> $@
+
 gdbtools:
                $(MAKE) -C tools/gdb all || exit 1
 
@@ -381,7 +386,7 @@ updater:
 env:
                $(MAKE) -C tools/env all MTD_VERSION=${MTD_VERSION} || exit 1
 
-depend dep:    $(VERSION_FILE)
+depend dep:    $(TIMESTAMP_FILE) $(VERSION_FILE)
                for dir in $(SUBDIRS) ; do $(MAKE) -C $$dir _depend ; done
 
 TAG_SUBDIRS += include
@@ -462,7 +467,7 @@ sinclude $(obj)include/autoconf.mk.dep
 else   # !config.mk
 all $(obj)u-boot.hex $(obj)u-boot.srec $(obj)u-boot.bin \
 $(obj)u-boot.img $(obj)u-boot.dis $(obj)u-boot \
-$(SUBDIRS) $(VERSION_FILE) gdbtools updater env depend \
+$(SUBDIRS) $(TIMESTAMP_FILE) $(VERSION_FILE) gdbtools updater env depend \
 dep tags ctags etags cscope $(obj)System.map:
        @echo "System not configured - see README" >&2
        @ exit 1
@@ -3274,7 +3279,7 @@ clean:
        @rm -f $(obj)include/bmp_logo.h
        @rm -f $(obj)nand_spl/{u-boot-spl,u-boot-spl.map,System.map}
        @rm -f $(obj)onenand_ipl/onenand-{ipl,ipl.bin,ipl-2k.bin,ipl-4k.bin,ipl.map}
-       @rm -f $(obj)api_examples/demo $(VERSION_FILE)
+       @rm -f $(obj)api_examples/demo $(TIMESTAMP_FILE) $(VERSION_FILE)
        @find $(OBJTREE) -type f \
                \( -name 'core' -o -name '*.bak' -o -name '*~' \
                -o -name '*.o'  -o -name '*.a'  \) -print \