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[build] Be explicit about -fcommon compiler directive

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gcc10 switched default behavior from -fcommon to -fno-common.  Since
"__shared" relies on the legacy behavior, explicitly specify it.

Signed-off-by: Bruce Rogers <brogers@suse.com>
Modified-by: Michael Brown <mcb30@ipxe.org>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Bruce Rogers
2020-05-06 15:03:02 -06:00
committed by Michael Brown
parent 3f637d7462
commit f982a71297
1 changed files with 1 additions and 0 deletions
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src/Makefile.housekeeping
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@@ -418,6 +418,7 @@ CFLAGS += -Os
CFLAGS += -g
ifeq ($(CCTYPE),gcc)
CFLAGS += -ffreestanding
CFLAGS += -fcommon
CFLAGS += -Wall -W -Wformat-nonliteral
HOST_CFLAGS += -Wall -W -Wformat-nonliteral
endif