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[MIPS] Makefile crapectomy.
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Dump all the ridiculously complicated stuff that was needed support
compilers older and newer than 3.0.
    
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Thiemo Seufer <ths@networkno.de>
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Ralf Baechle committed Mar 21, 2006
1 parent 0cea043 commit 59b3e8e
Showing 1 changed file with 39 additions and 169 deletions.
208 changes: 39 additions & 169 deletions arch/mips/Makefile
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Original file line number Diff line number Diff line change
Expand Up @@ -12,10 +12,6 @@
# for "archclean" cleaning up for this architecture.
#

as-option = $(shell if $(CC) $(CFLAGS) $(1) -Wa,-Z -c -o /dev/null \
-xassembler /dev/null > /dev/null 2>&1; then echo "$(1)"; \
else echo "$(2)"; fi ;)

cflags-y :=

#
Expand All @@ -38,12 +34,10 @@ else
endif

ifdef CONFIG_32BIT
gcc-abi = 32
tool-prefix = $(32bit-tool-prefix)
UTS_MACHINE := mips
endif
ifdef CONFIG_64BIT
gcc-abi = 64
tool-prefix = $(64bit-tool-prefix)
UTS_MACHINE := mips64
endif
Expand All @@ -52,40 +46,28 @@ ifdef CONFIG_CROSSCOMPILE
CROSS_COMPILE := $(tool-prefix)
endif

CHECKFLAGS-y += -D__linux__ -D__mips__ \
-D_MIPS_SZINT=32 \
-D_ABIO32=1 \
-D_ABIN32=2 \
-D_ABI64=3
CHECKFLAGS-$(CONFIG_32BIT) += -D_MIPS_SIM=_ABIO32 \
-D_MIPS_SZLONG=32 \
-D_MIPS_SZPTR=32 \
-D__PTRDIFF_TYPE__=int
CHECKFLAGS-$(CONFIG_64BIT) += -m64 -D_MIPS_SIM=_ABI64 \
-D_MIPS_SZLONG=64 \
-D_MIPS_SZPTR=64 \
-D__PTRDIFF_TYPE__="long int"
CHECKFLAGS-$(CONFIG_CPU_BIG_ENDIAN) += -D__MIPSEB__
CHECKFLAGS-$(CONFIG_CPU_LITTLE_ENDIAN) += -D__MIPSEL__

CHECKFLAGS = $(CHECKFLAGS-y)

ifdef CONFIG_32BIT
gas-abi = 32
ld-emul = $(32bit-emul)
vmlinux-32 = vmlinux
vmlinux-64 = vmlinux.64

cflags-y += -mabi=32
endif

ifdef CONFIG_64BIT
gas-abi = 64
ld-emul = $(64bit-emul)
vmlinux-32 = vmlinux.32
vmlinux-64 = vmlinux

cflags-y += -mabi=64
ifdef CONFIG_BUILD_ELF64
cflags-y += $(call cc-option,-mno-explicit-relocs)
else
cflags-y += $(call cc-option,-msym32)
endif
endif


#
# GCC uses -G 0 -mabicalls -fpic as default. We don't want PIC in the kernel
# code since it only slows down the whole thing. At some point we might make
Expand All @@ -107,162 +89,44 @@ MODFLAGS += -mlong-calls
# carefully avoid to add it redundantly because gcc 3.3/3.4 complains
# when fed the toolchain default!
#
cflags-$(CONFIG_CPU_BIG_ENDIAN) += $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' && echo -EB)
cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' || echo -EL)
cflags-$(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__)

cflags-$(CONFIG_SB1XXX_CORELIS) += $(call cc-option,-mno-sched-prolog) \
-fno-omit-frame-pointer

#
# Use: $(call set_gccflags,<cpu0>,<isa0>,<cpu1>,<isa1>,<isa2>)
#
# <cpu0>,<isa0> -- preferred CPU and ISA designations (may require
# recent tools)
# <cpu1>,<isa1> -- fallback CPU and ISA designations (have to work
# with up to the oldest supported tools)
# <isa2> -- an ISA designation used as an ABI selector for
# gcc versions that do not support "-mabi=32"
# (depending on the CPU type, either "mips1" or
# "mips2")
#
set_gccflags = $(shell \
while :; do \
cpu=$(1); isa=-$(2); \
for gcc_opt in -march= -mcpu=; do \
$(CC) $$gcc_opt$$cpu $$isa -S -o /dev/null \
-xc /dev/null > /dev/null 2>&1 && \
break 2; \
done; \
cpu=$(3); isa=-$(4); \
for gcc_opt in -march= -mcpu=; do \
$(CC) $$gcc_opt$$cpu $$isa -S -o /dev/null \
-xc /dev/null > /dev/null 2>&1 && \
break 2; \
done; \
break; \
done; \
gcc_abi=-mabi=$(gcc-abi); gcc_cpu=$$cpu; \
if $(CC) $$gcc_abi -S -o /dev/null -xc /dev/null > /dev/null 2>&1; then \
gcc_isa=$$isa; \
else \
gcc_abi=; gcc_isa=-$(5); \
fi; \
gas_abi=-Wa,-$(gcc-abi); gas_cpu=$$cpu; gas_isa=-Wa,$$isa; \
while :; do \
for gas_opt in -Wa,-march= -Wa,-mcpu=; do \
$(CC) $$gas_abi $$gas_opt$$cpu $$gas_isa -Wa,-Z -c \
-o /dev/null -xassembler /dev/null > /dev/null 2>&1 && \
break 2; \
done; \
gas_abi=; gas_opt=; gas_cpu=; gas_isa=; \
break; \
done; \
if test "$(gcc-abi)" != "$(gas-abi)"; then \
gas_abi="-Wa,-$(gas-abi) -Wa,-mgp$(gcc-abi)"; \
fi; \
if test "$$gcc_opt" = -march= && test -n "$$gcc_abi"; then \
$(CC) $$gcc_abi $$gcc_opt$$gcc_cpu -S -o /dev/null \
-xc /dev/null > /dev/null 2>&1 && \
gcc_isa=; \
fi; \
echo $$gcc_abi $$gcc_opt$$gcc_cpu $$gcc_isa $$gas_abi $$gas_opt$$gas_cpu $$gas_isa)

#
# CPU-dependent compiler/assembler options for optimization.
#
cflags-$(CONFIG_CPU_R3000) += \
$(call set_gccflags,r3000,mips1,r3000,mips1,mips1)
CHECKFLAGS-$(CONFIG_CPU_R3000) += -D_MIPS_ISA=_MIPS_ISA_MIPS1

cflags-$(CONFIG_CPU_TX39XX) += \
$(call set_gccflags,r3900,mips1,r3000,mips1,mips1)
CHECKFLAGS-$(CONFIG_CPU_TX39XX) += -D_MIPS_ISA=_MIPS_ISA_MIPS1

cflags-$(CONFIG_CPU_R6000) += \
$(call set_gccflags,r6000,mips2,r6000,mips2,mips2) \
-Wa,--trap
CHECKFLAGS-$(CONFIG_CPU_R6000) += -D_MIPS_ISA=_MIPS_ISA_MIPS2

cflags-$(CONFIG_CPU_R4300) += \
$(call set_gccflags,r4300,mips3,r4300,mips3,mips2) \
-Wa,--trap
CHECKFLAGS-$(CONFIG_CPU_R4300) += -D_MIPS_ISA=_MIPS_ISA_MIPS3

cflags-$(CONFIG_CPU_VR41XX) += \
$(call set_gccflags,r4100,mips3,r4600,mips3,mips2) \
-Wa,--trap
CHECKFLAGS-$(CONFIG_CPU_VR41XX) += -D_MIPS_ISA=_MIPS_ISA_MIPS3

cflags-$(CONFIG_CPU_R4X00) += \
$(call set_gccflags,r4600,mips3,r4600,mips3,mips2) \
-Wa,--trap
CHECKFLAGS-$(CONFIG_CPU_R4X00) += -D_MIPS_ISA=_MIPS_ISA_MIPS3

cflags-$(CONFIG_CPU_TX49XX) += \
$(call set_gccflags,r4600,mips3,r4600,mips3,mips2) \
-Wa,--trap
CHECKFLAGS-$(CONFIG_CPU_TX49XX) += -D_MIPS_ISA=_MIPS_ISA_MIPS3

cflags-$(CONFIG_CPU_MIPS32_R1) += \
$(call set_gccflags,mips32,mips32,r4600,mips3,mips2) \
cflags-$(CONFIG_CPU_R3000) += -march=r3000
cflags-$(CONFIG_CPU_TX39XX) += -march=r3900
cflags-$(CONFIG_CPU_R6000) += -march=r6000 -Wa,--trap
cflags-$(CONFIG_CPU_R4300) += -march=r4300 -Wa,--trap
cflags-$(CONFIG_CPU_VR41XX) += -march=r4100 -Wa,--trap
cflags-$(CONFIG_CPU_R4X00) += -march=r4600 -Wa,--trap
cflags-$(CONFIG_CPU_TX49XX) += -march=r4600 -Wa,--trap
cflags-$(CONFIG_CPU_MIPS32_R1) += $(call cc-option,-march=mips32,-mips2 -mtune=r4600) \
-Wa,-mips32 -Wa,--trap
cflags-$(CONFIG_CPU_MIPS32_R2) += $(call cc-option,-march=mips32r2,-mips2 -mtune=r4600) \
-Wa,-mips32r2 -Wa,--trap
cflags-$(CONFIG_CPU_MIPS64_R1) += $(call cc-option,-march=mips64,-mips2 -mtune=r4600) \
-Wa,-mips64 -Wa,--trap
cflags-$(CONFIG_CPU_MIPS64_R2) += $(call cc-option,-march=mips64r2,-mips2 -mtune=r4600 ) \
-Wa,-mips64r2 -Wa,--trap
cflags-$(CONFIG_CPU_R5000) += -march=r5000 -Wa,--trap
cflags-$(CONFIG_CPU_R5432) += $(call cc-options,-march=r5400,-march=r5000) \
-Wa,--trap
CHECKFLAGS-$(CONFIG_CPU_MIPS32_R1) += -D_MIPS_ISA=_MIPS_ISA_MIPS32

cflags-$(CONFIG_CPU_MIPS32_R2) += \
$(call set_gccflags,mips32r2,mips32r2,r4600,mips3,mips2) \
-Wa,--trap
CHECKFLAGS-$(CONFIG_CPU_MIPS32_R2) += -D_MIPS_ISA=_MIPS_ISA_MIPS32

cflags-$(CONFIG_CPU_MIPS64_R1) += \
$(call set_gccflags,mips64,mips64,r4600,mips3,mips2) \
-Wa,--trap
CHECKFLAGS-$(CONFIG_CPU_MIPS64_R1) += -D_MIPS_ISA=_MIPS_ISA_MIPS64

cflags-$(CONFIG_CPU_MIPS64_R2) += \
$(call set_gccflags,mips64r2,mips64r2,r4600,mips3,mips2) \
-Wa,--trap
CHECKFLAGS-$(CONFIG_CPU_MIPS64_R2) += -D_MIPS_ISA=_MIPS_ISA_MIPS64

cflags-$(CONFIG_CPU_R5000) += \
$(call set_gccflags,r5000,mips4,r5000,mips4,mips2) \
-Wa,--trap
CHECKFLAGS-$(CONFIG_CPU_R5000) += -D_MIPS_ISA=_MIPS_ISA_MIPS4

cflags-$(CONFIG_CPU_R5432) += \
$(call set_gccflags,r5400,mips4,r5000,mips4,mips2) \
-Wa,--trap
CHECKFLAGS-$(CONFIG_CPU_R5432) += -D_MIPS_ISA=_MIPS_ISA_MIPS4

cflags-$(CONFIG_CPU_NEVADA) += \
$(call set_gccflags,rm5200,mips4,r5000,mips4,mips2) \
cflags-$(CONFIG_CPU_NEVADA) += $(call cc-options,-march=rm5200,-march=r5000) \
-Wa,--trap
CHECKFLAGS-$(CONFIG_CPU_NEVADA) += -D_MIPS_ISA=_MIPS_ISA_MIPS4

cflags-$(CONFIG_CPU_RM7000) += \
$(call set_gccflags,rm7000,mips4,r5000,mips4,mips2) \
cflags-$(CONFIG_CPU_RM7000) += $(call cc-option,-march=rm7000,-march=r5000) \
-Wa,--trap
CHECKFLAGS-$(CONFIG_CPU_RM7000) += -D_MIPS_ISA=_MIPS_ISA_MIPS4

cflags-$(CONFIG_CPU_RM9000) += \
$(call set_gccflags,rm9000,mips4,r5000,mips4,mips2) \
-Wa,--trap
CHECKFLAGS-$(CONFIG_CPU_RM9000) += -D_MIPS_ISA=_MIPS_ISA_MIPS4


cflags-$(CONFIG_CPU_SB1) += \
$(call set_gccflags,sb1,mips64,r5000,mips4,mips2) \
cflags-$(CONFIG_CPU_RM9000) += $(call cc-option,-march=rm9000,-march=r5000) \
-Wa,--trap
CHECKFLAGS-$(CONFIG_CPU_SB1) += -D_MIPS_ISA=_MIPS_ISA_MIPS64

cflags-$(CONFIG_CPU_R8000) += \
$(call set_gccflags,r8000,mips4,r8000,mips4,mips2) \
cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-march=sb1,-march=r5000) \
-Wa,--trap
CHECKFLAGS-$(CONFIG_CPU_R8000) += -D_MIPS_ISA=_MIPS_ISA_MIPS4

cflags-$(CONFIG_CPU_R10000) += \
$(call set_gccflags,r10000,mips4,r8000,mips4,mips2) \
cflags-$(CONFIG_CPU_R8000) += -march=r8000 -Wa,--trap
cflags-$(CONFIG_CPU_R10000) += $(call cc-option,-march=r10000,-march=r8000) \
-Wa,--trap
CHECKFLAGS-$(CONFIG_CPU_R10000) += -D_MIPS_ISA=_MIPS_ISA_MIPS4

ifdef CONFIG_CPU_SB1
ifdef CONFIG_SB1_PASS_1_WORKAROUNDS
Expand Down Expand Up @@ -748,6 +612,12 @@ CFLAGS += $(cflags-y)

LDFLAGS += -m $(ld-emul)

ifdef CONFIG_MIPS
CHECKFLAGS += $(shell $(CC) $(CFLAGS) -dM -E -xc /dev/null | \
egrep -vw '__GNUC_(MAJOR|MINOR|PATCHLEVEL)__' | \
sed -e 's/^\#define /-D/' -e 's/ /="/' -e 's/$$/"/')
endif

OBJCOPYFLAGS += --remove-section=.reginfo

#
Expand Down

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