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x86: Get rid of empty loadable segment warning 

When the check for global symbols in romstage happens, if everything is
good, a warning appears, telling us that the segment is empty. While the
empty segment is good, the warning is distracting:

"BFD: build/cbfs/fallback/romstage_null.debug: warning: Empty loadable
segment detected, is this intentional ?"

This change hides that particular warning, but shouldn't hide any other
output from objcopy.

Change-Id: If22489280712d02a61c3ee5e0cb2a53db87d6082
Signed-off-by: Martin Roth <martinroth@google.com>
Reviewed-on: http://review.coreboot.org/11302
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Tested-by: build bot (Jenkins)
This commit is contained in:
Martin Roth 2015-08-22 10:37:39 -06:00
parent 410f9ad1a3
commit dbb50c48f9
1 changed files with 2 additions and 1 deletions
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3
src/arch/x86/Makefile.inc
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@ -207,7 +207,8 @@ endif
$(objcbfs)/romstage_null.debug: $$(romstage-objs) $(objgenerated)/romstage_null.ld $$(romstage-libs)
@printf " LINK $(subst $(obj)/,,$(@))\n"
$(LD_romstage) --gc-sections -nostdlib -nostartfiles -static -o $@ -L$(obj) $(COMPILER_RT_FLAGS_romstage) --whole-archive --start-group $(filter-out %.ld,$(romstage-objs)) $(romstage-libs) --no-whole-archive $(COMPILER_RT_romstage) --end-group -T $(objgenerated)/romstage_null.ld --oformat $(romstage-oformat)
$(OBJCOPY_romstage) --only-section .illegal_globals $(@) $(objcbfs)/romstage_null.offenders && \
LANG=C LC_ALL= $(OBJCOPY_romstage) --only-section .illegal_globals $(@) $(objcbfs)/romstage_null.offenders 2>&1 | \
grep -v "Empty loadable segment detected" && \
$(NM_romstage) $(objcbfs)/romstage_null.offenders | grep -q ""; if [ $$? -eq 0 ]; then \
echo "Forbidden global variables in romstage:"; \
$(NM_romstage) $(objcbfs)/romstage_null.offenders; false; \