Makefile: add target for $(LDSCRIPT)

If the $(LDSCRIPT) does not exist (normally it's board/$(BOARD)/u-boot.lds),
then change into the board directory and try and create it.  This allows you
to generate the linker script on the fly based upon board defines (like the
Blackfin boards do).

There should be no regressions due to this change as the normal case is to
already have a u-boot.lds file.  If that's the case, then there's nothing to
generate, and so make will always exit.  The fix here is that if the linker
script does not exist, the implicit rules take over and attempt to guess how
to generate the file.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>

diff --git a/Makefile b/Makefile
index a731ee8979c79dc042aba2f19ad9c8df77383a7d..7446bc712c81951c153c362800164858bb1fa5b4 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -326,6 +326,9 @@ $(LIBS):    depend $(obj)include/autoconf.mk
 $(SUBDIRS):    depend $(obj)include/autoconf.mk
                $(MAKE) -C $@ all
 
+$(LDSCRIPT):   depend $(obj)include/autoconf.mk
+               $(MAKE) -C $(dir $@) $(notdir $@)
+
 $(NAND_SPL):   $(VERSION_FILE) $(obj)include/autoconf.mk
                $(MAKE) -C nand_spl/board/$(BOARDDIR) all