add cscope build target

Add cscope build target to generate cscope database for code browsing.

Signed-off-by: Li Yang <leoli@freescale.com>

diff --git a/Makefile b/Makefile
index 4f4efa4844dc91403fc5b212b9835ad64babd8cc..75254b7a31198c4d5671fafe9a5fc15c2af89d42 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -400,6 +400,10 @@ tags ctags:
 etags:
                etags -a -o $(obj)etags `find $(SUBDIRS) $(TAG_SUBDIRS) \
                                                -name '*.[ch]' -print`
+cscope:
+               find $(SUBDIRS) $(TAG_SUBDIRS) -name '*.[ch]' -print \
+                                               > cscope.files
+               cscope -b -q -k
 
 $(obj)System.map:      $(obj)u-boot
                @$(NM) $< | \
@@ -427,7 +431,7 @@ 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 \
-dep tags ctags etags $(obj)System.map:
+dep tags ctags etags cscope $(obj)System.map:
        @echo "System not configured - see README" >&2
        @ exit 1
 endif  # config.mk
@@ -2929,7 +2933,8 @@ clobber:  clean
                -o -name '*.srec' -o -name '*.bin' -o -name u-boot.img \) \
                -print0 \
                | xargs -0 rm -f
-       @rm -f $(OBJS) $(obj)*.bak $(obj)ctags $(obj)etags $(obj)TAGS
+       @rm -f $(OBJS) $(obj)*.bak $(obj)ctags $(obj)etags $(obj)TAGS \
+               $(obj)cscope.*
        @rm -fr $(obj)*.*~
        @rm -f $(obj)u-boot $(obj)u-boot.map $(obj)u-boot.hex $(ALL)
        @rm -f $(obj)tools/crc32.c $(obj)tools/environment.c $(obj)tools/env/crc32.c $(obj)tools/sha1.c