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[build] Fix compilation when gcc is patched to default to -fPIE -Wl,-pie

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Signed-off-by: Gilles Espinasse <g.esp@free.fr>
Modified-by: Michael Brown <mcb30@ipxe.org>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Gilles Espinasse
2011-03-29 15:30:11 +01:00
committed by Michael Brown
parent 0bb6ef4d97
commit fe61f6de0d
1 changed files with 11 additions and 0 deletions
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11
src/Makefile.housekeeping
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@@ -138,6 +138,17 @@ SP_FLAGS := $(shell $(SP_TEST) && $(ECHO) '-fno-stack-protector')
WORKAROUND_CFLAGS += $(SP_FLAGS) WORKAROUND_CFLAGS += $(SP_FLAGS)
endif endif
# Some widespread patched versions of gcc include -fPIE -Wl,-pie by
# default. Note that gcc will exit *successfully* if it fails to
# recognise an option that starts with "no", so we have to test for
# output on stderr instead of checking the exit status.
#
ifeq ($(CCTYPE),gcc)
PIE_TEST = [ -z "`$(CC) -fno-PIE -nopie -x c -c /dev/null -o /dev/null 2>&1`" ]
PIE_FLAGS := $(shell $(PIE_TEST) && $(ECHO) '-fno-PIE -nopie')
WORKAROUND_CFLAGS += $(PIE_FLAGS)
endif
# gcc 4.4 generates .eh_frame sections by default, which distort the # gcc 4.4 generates .eh_frame sections by default, which distort the
# output of "size". Inhibit this. # output of "size". Inhibit this.
# #