[U-Boot] [PATCH RFC] Fix build problems caused by "_end" -> "__bss_end__" rename

[Wolfgang Denk]

Commit 44c6e65 "rename _end to __bss_end__ broke building of a large
number of systems (at least all PowerPC?):

libstubs.o: In function `app_startup':
examples/standalone/stubs.c:197: undefined reference to `__bss_end__'

As a workaround (instead of introducing linker scripts) we can
add a --defsym=__bss_end__=_end

Signed-off-by: Wolfgang Denk <wd at denx.de>
Cc: Po-Yu Chuang <ratbert at faraday-tech.com>
Cc: Albert Aribaud <albert.aribaud at free.fr>
---


What I really do not understand is why we don't see the same type of
undefined reference errors on ARM?  ALso, on ARM we see __bss_end__
and _bss_end__, and __bss_start und __bss_start__ - where are the
other names coming from? [On PPC we see only __bss_start and
__bss_end__].

 examples/standalone/Makefile |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/examples/standalone/Makefile b/examples/standalone/Makefile
index c1dfdce..06cf14f 100644
--- a/examples/standalone/Makefile
+++ b/examples/standalone/Makefile
@@ -96,6 +96,7 @@ $(LIB):	$(obj).depend $(LIBOBJS)
 $(ELF):
 $(obj)%:	$(obj)%.o $(LIB)
 		$(LD) -g -Ttext $(STANDALONE_LOAD_ADDR) \
+			--defsym=__bss_end__=_end \
 			-o $@ -e $(SYM_PREFIX)$(notdir $(<:.o=)) $< $(LIB) \
 			-L$(gcclibdir) -lgcc
 
-- 
1.7.4