https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67156
--- Comment #2 from Дилян Палаузов <dilyan.palauzov at aegee dot org> ---
It is x86_64-pc-linux-gnu == host == target == build.
To what I see in the root Makefile (copied below) at the end of the build files
in stage2 and stage3 are compared with `cmp', which fails, if one file has
debugging information and the other does not, even if both files have identical
text/data/bss sections.
---
do-compare = cmp --ignore-initial=16 $$f1 $$f2
compare:
@r=`${PWD_COMMAND}`; export r; \
s=`cd $(srcdir); ${PWD_COMMAND}`; export s; \
if test -f stage2-lean; then \
echo Cannot compare object files as stage 2 was deleted.; \
exit 0; \
fi; \
: $(MAKE); $(stage); \
rm -f .bad_compare; \
echo Comparing stages 2 and 3; \
sed=`echo stage3 | sed 's,^stage,,;s,.,.,g'`; \
files=`find stage3-* -name "*$(objext)" -print | \
sed -n s,^stage$$sed-,,p`; \
for file in $${files}; do \
f1=$$r/stage2-$$file; f2=$$r/stage3-$$file; \
if test ! -f $$f1; then continue; fi; \
$(do-compare) > /dev/null 2>&1; \
if test $$? -eq 1; then \
case $$file in \
gcc/cc*-checksum$(objext) | gcc/ada/*tools/*) \
echo warning: $$file differs ;; \
*) \
echo $$file differs >> .bad_compare ;; \
esac; \
fi; \
done; \
if [ -f .bad_compare ]; then \
echo "Bootstrap comparison failure!"; \
cat .bad_compare; \
exit 1; \
else \
echo Comparison successful.; \
fi; \
$(STAMP) compare
if $(LEAN); then \
rm -rf stage2-*; \
$(STAMP) stage2-lean; \
fi
