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[MIPS] Workaround for bug in gcc -EB / -EL options. 

Certain gcc versions upto gcc 4.1.1 (probably 4.2-subversion as of
2006-10-10 don't properly change the the predefined symbols if -EB / -EL
are used, so we kludge that here.  A bug has been filed at
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29413.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
hifive-unleashed-5.1
Ralf Baechle 2006-10-10 15:44:10 +01:00
parent ea5742830a
commit f94054121e
1 changed files with 11 additions and 2 deletions
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13
arch/mips/Makefile
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@ -91,8 +91,17 @@ cflags-y += -ffreestanding
# carefully avoid to add it redundantly because gcc 3.3/3.4 complains
# when fed the toolchain default!
#
cflags-$(CONFIG_CPU_BIG_ENDIAN) += $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' && echo -EB -D__MIPSEB__)
cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' || echo -EL -D__MIPSEL__)
# Certain gcc versions upto gcc 4.1.1 (probably 4.2-subversion as of
# 2006-10-10 don't properly change the the predefined symbols if -EB / -EL
# are used, so we kludge that here. A bug has been filed at
# http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29413.
#
undef-all += -UMIPSEB -U_MIPSEB -U__MIPSEB -U__MIPSEB__
undef-all += -UMIPSEL -U_MIPSEL -U__MIPSEL -U__MIPSEL__
predef-be += -DMIPSEB -D_MIPSEB -D__MIPSEB -D__MIPSEB__
predef-le += -DMIPSEL -D_MIPSEL -D__MIPSEL -D__MIPSEL__
cflags-$(CONFIG_CPU_BIG_ENDIAN) += $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' && echo -EB $(undef-all) $(predef-be))
cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' || echo -EL $(undef-all) $(predef-le))
cflags-$(CONFIG_SB1XXX_CORELIS) += $(call cc-option,-mno-sched-prolog) \
-fno-omit-frame-pointer