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cleanup arch/alpha/Makefile

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- binutils 2.7 is far below the current minimum supported version,
  and there's therefore no longer a need for an extra test

- since even gcc 3.2 already supports all options used we can use them
  unconditionally

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Adrian Bunk 2007-10-16 01:26:33 -07:00 committed by Linus Torvalds
parent fabc7f66ee
commit d9ff5f3872
1 changed files with 14 additions and 65 deletions
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79
arch/alpha/Makefile
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@ -12,73 +12,22 @@ NM := $(NM) -B
LDFLAGS_vmlinux := -static -N #-relax
CHECKFLAGS += -D__alpha__ -m64
cflags-y := -pipe -mno-fp-regs -ffixed-8
cflags-y := -pipe -mno-fp-regs -ffixed-8 -msmall-data
# Determine if we can use the BWX instructions with GAS.
old_gas := $(shell if $(AS) --version 2>&1 | grep 'version 2.7' > /dev/null; then echo y; else echo n; fi)
cpuflags-$(CONFIG_ALPHA_EV67) := -mcpu=ev67
cpuflags-$(CONFIG_ALPHA_EV6) := -mcpu=ev6
cpuflags-$(CONFIG_ALPHA_POLARIS) := -mcpu=pca56
cpuflags-$(CONFIG_ALPHA_SX164) := -mcpu=pca56
cpuflags-$(CONFIG_ALPHA_EV56) := -mcpu=ev56
cpuflags-$(CONFIG_ALPHA_EV5) := -mcpu=ev5
cpuflags-$(CONFIG_ALPHA_EV4) := -mcpu=ev4
# If GENERIC, make sure to turn off any instruction set extensions that
# the host compiler might have on by default. Given that EV4 and EV5
# have the same instruction set, prefer EV5 because an EV5 schedule is
# more likely to keep an EV4 processor busy than vice-versa.
cpuflags-$(CONFIG_ALPHA_GENERIC) := -mcpu=ev5
ifeq ($(old_gas),y)
$(error The assembler '$(AS)' does not support the BWX instruction)
endif
# Determine if GCC understands the -mcpu= option.
have_mcpu := $(call cc-option-yn, -mcpu=ev5)
have_mcpu_pca56 := $(call cc-option-yn, -mcpu=pca56)
have_mcpu_ev6 := $(call cc-option-yn, -mcpu=ev6)
have_mcpu_ev67 := $(call cc-option-yn, -mcpu=ev67)
have_msmall_data := $(call cc-option-yn, -msmall-data)
cflags-$(have_msmall_data) += -msmall-data
# Turn on the proper cpu optimizations.
ifeq ($(have_mcpu),y)
mcpu_done := n
# If GENERIC, make sure to turn off any instruction set extensions that
# the host compiler might have on by default. Given that EV4 and EV5
# have the same instruction set, prefer EV5 because an EV5 schedule is
# more likely to keep an EV4 processor busy than vice-versa.
ifeq ($(CONFIG_ALPHA_GENERIC),y)
mcpu := ev5
mcpu_done := y
endif
ifeq ($(mcpu_done)$(CONFIG_ALPHA_SX164)$(have_mcpu_pca56),nyy)
mcpu := pca56
mcpu_done := y
endif
ifeq ($(mcpu_done)$(CONFIG_ALPHA_POLARIS)$(have_mcpu_pca56),nyy)
mcpu := pca56
mcpu_done := y
endif
ifeq ($(mcpu_done)$(CONFIG_ALPHA_EV4),ny)
mcpu := ev4
mcpu_done := y
endif
ifeq ($(mcpu_done)$(CONFIG_ALPHA_EV56),ny)
mcpu := ev56
mcpu_done := y
endif
ifeq ($(mcpu_done)$(CONFIG_ALPHA_EV5),ny)
mcpu := ev5
mcpu_done := y
endif
ifeq ($(mcpu_done)$(CONFIG_ALPHA_EV67)$(have_mcpu_ev67),nyy)
mcpu := ev67
mcpu_done := y
endif
ifeq ($(mcpu_done)$(CONFIG_ALPHA_EV6),ny)
ifeq ($(have_mcpu_ev6),y)
mcpu := ev6
else
ifeq ($(have_mcpu_pca56),y)
mcpu := pca56
else
mcpu=ev56
endif
endif
mcpu_done := y
endif
cflags-$(mcpu_done) += -mcpu=$(mcpu)
endif
cflags-y += $(cpuflags-y)
# For TSUNAMI, we must have the assembler not emulate our instructions.