mirror of https://gitee.com/openkylin/linux.git
[MIPS] Makefile crapectomy.
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>
This commit is contained in:
Ralf Baechle
parent
0cea043b56
commit
59b3e8e9aa
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@ -12,10 +12,6 @@
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# for "archclean" cleaning up for this architecture.
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#
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as-option = $(shell if $(CC) $(CFLAGS) $(1) -Wa,-Z -c -o /dev/null \
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-xassembler /dev/null > /dev/null 2>&1; then echo "$(1)"; \
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else echo "$(2)"; fi ;)
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cflags-y :=
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#
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@ -38,12 +34,10 @@ else
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endif
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ifdef CONFIG_32BIT
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gcc-abi = 32
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tool-prefix = $(32bit-tool-prefix)
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UTS_MACHINE := mips
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endif
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ifdef CONFIG_64BIT
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gcc-abi = 64
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tool-prefix = $(64bit-tool-prefix)
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UTS_MACHINE := mips64
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endif
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@ -52,39 +46,27 @@ ifdef CONFIG_CROSSCOMPILE
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CROSS_COMPILE := $(tool-prefix)
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endif
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CHECKFLAGS-y += -D__linux__ -D__mips__ \
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-D_MIPS_SZINT=32 \
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-D_ABIO32=1 \
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-D_ABIN32=2 \
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-D_ABI64=3
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CHECKFLAGS-$(CONFIG_32BIT) += -D_MIPS_SIM=_ABIO32 \
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-D_MIPS_SZLONG=32 \
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-D_MIPS_SZPTR=32 \
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-D__PTRDIFF_TYPE__=int
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CHECKFLAGS-$(CONFIG_64BIT) += -m64 -D_MIPS_SIM=_ABI64 \
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-D_MIPS_SZLONG=64 \
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-D_MIPS_SZPTR=64 \
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-D__PTRDIFF_TYPE__="long int"
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CHECKFLAGS-$(CONFIG_CPU_BIG_ENDIAN) += -D__MIPSEB__
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CHECKFLAGS-$(CONFIG_CPU_LITTLE_ENDIAN) += -D__MIPSEL__
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CHECKFLAGS = $(CHECKFLAGS-y)
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ifdef CONFIG_32BIT
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gas-abi = 32
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ld-emul = $(32bit-emul)
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vmlinux-32 = vmlinux
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vmlinux-64 = vmlinux.64
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cflags-y += -mabi=32
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endif
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ifdef CONFIG_64BIT
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gas-abi = 64
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ld-emul = $(64bit-emul)
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vmlinux-32 = vmlinux.32
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vmlinux-64 = vmlinux
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cflags-y += -mabi=64
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ifdef CONFIG_BUILD_ELF64
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cflags-y += $(call cc-option,-mno-explicit-relocs)
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else
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cflags-y += $(call cc-option,-msym32)
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endif
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endif
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#
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# GCC uses -G 0 -mabicalls -fpic as default. We don't want PIC in the kernel
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@ -107,162 +89,44 @@ MODFLAGS += -mlong-calls
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# carefully avoid to add it redundantly because gcc 3.3/3.4 complains
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# when fed the toolchain default!
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#
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cflags-$(CONFIG_CPU_BIG_ENDIAN) += $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' && echo -EB)
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cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' || echo -EL)
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cflags-$(CONFIG_CPU_BIG_ENDIAN) += $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' && echo -EB -D__MIPSEB__)
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cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' || echo -EL -D__MIPSEL__)
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cflags-$(CONFIG_SB1XXX_CORELIS) += $(call cc-option,-mno-sched-prolog) \
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-fno-omit-frame-pointer
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#
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# Use: $(call set_gccflags,<cpu0>,<isa0>,<cpu1>,<isa1>,<isa2>)
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#
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# <cpu0>,<isa0> -- preferred CPU and ISA designations (may require
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# recent tools)
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# <cpu1>,<isa1> -- fallback CPU and ISA designations (have to work
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# with up to the oldest supported tools)
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# <isa2> -- an ISA designation used as an ABI selector for
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# gcc versions that do not support "-mabi=32"
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# (depending on the CPU type, either "mips1" or
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# "mips2")
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#
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set_gccflags = $(shell \
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while :; do \
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cpu=$(1); isa=-$(2); \
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for gcc_opt in -march= -mcpu=; do \
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$(CC) $$gcc_opt$$cpu $$isa -S -o /dev/null \
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-xc /dev/null > /dev/null 2>&1 && \
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break 2; \
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done; \
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cpu=$(3); isa=-$(4); \
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for gcc_opt in -march= -mcpu=; do \
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$(CC) $$gcc_opt$$cpu $$isa -S -o /dev/null \
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-xc /dev/null > /dev/null 2>&1 && \
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break 2; \
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done; \
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break; \
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done; \
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gcc_abi=-mabi=$(gcc-abi); gcc_cpu=$$cpu; \
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if $(CC) $$gcc_abi -S -o /dev/null -xc /dev/null > /dev/null 2>&1; then \
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gcc_isa=$$isa; \
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else \
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gcc_abi=; gcc_isa=-$(5); \
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fi; \
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gas_abi=-Wa,-$(gcc-abi); gas_cpu=$$cpu; gas_isa=-Wa,$$isa; \
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while :; do \
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for gas_opt in -Wa,-march= -Wa,-mcpu=; do \
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$(CC) $$gas_abi $$gas_opt$$cpu $$gas_isa -Wa,-Z -c \
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-o /dev/null -xassembler /dev/null > /dev/null 2>&1 && \
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break 2; \
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done; \
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gas_abi=; gas_opt=; gas_cpu=; gas_isa=; \
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break; \
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done; \
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if test "$(gcc-abi)" != "$(gas-abi)"; then \
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gas_abi="-Wa,-$(gas-abi) -Wa,-mgp$(gcc-abi)"; \
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fi; \
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if test "$$gcc_opt" = -march= && test -n "$$gcc_abi"; then \
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$(CC) $$gcc_abi $$gcc_opt$$gcc_cpu -S -o /dev/null \
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-xc /dev/null > /dev/null 2>&1 && \
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gcc_isa=; \
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fi; \
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echo $$gcc_abi $$gcc_opt$$gcc_cpu $$gcc_isa $$gas_abi $$gas_opt$$gas_cpu $$gas_isa)
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#
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# CPU-dependent compiler/assembler options for optimization.
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#
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cflags-$(CONFIG_CPU_R3000) += \
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$(call set_gccflags,r3000,mips1,r3000,mips1,mips1)
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CHECKFLAGS-$(CONFIG_CPU_R3000) += -D_MIPS_ISA=_MIPS_ISA_MIPS1
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cflags-$(CONFIG_CPU_TX39XX) += \
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$(call set_gccflags,r3900,mips1,r3000,mips1,mips1)
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CHECKFLAGS-$(CONFIG_CPU_TX39XX) += -D_MIPS_ISA=_MIPS_ISA_MIPS1
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cflags-$(CONFIG_CPU_R6000) += \
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$(call set_gccflags,r6000,mips2,r6000,mips2,mips2) \
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cflags-$(CONFIG_CPU_R3000) += -march=r3000
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cflags-$(CONFIG_CPU_TX39XX) += -march=r3900
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cflags-$(CONFIG_CPU_R6000) += -march=r6000 -Wa,--trap
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cflags-$(CONFIG_CPU_R4300) += -march=r4300 -Wa,--trap
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cflags-$(CONFIG_CPU_VR41XX) += -march=r4100 -Wa,--trap
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cflags-$(CONFIG_CPU_R4X00) += -march=r4600 -Wa,--trap
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cflags-$(CONFIG_CPU_TX49XX) += -march=r4600 -Wa,--trap
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cflags-$(CONFIG_CPU_MIPS32_R1) += $(call cc-option,-march=mips32,-mips2 -mtune=r4600) \
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-Wa,-mips32 -Wa,--trap
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cflags-$(CONFIG_CPU_MIPS32_R2) += $(call cc-option,-march=mips32r2,-mips2 -mtune=r4600) \
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-Wa,-mips32r2 -Wa,--trap
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cflags-$(CONFIG_CPU_MIPS64_R1) += $(call cc-option,-march=mips64,-mips2 -mtune=r4600) \
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-Wa,-mips64 -Wa,--trap
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cflags-$(CONFIG_CPU_MIPS64_R2) += $(call cc-option,-march=mips64r2,-mips2 -mtune=r4600 ) \
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-Wa,-mips64r2 -Wa,--trap
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cflags-$(CONFIG_CPU_R5000) += -march=r5000 -Wa,--trap
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cflags-$(CONFIG_CPU_R5432) += $(call cc-options,-march=r5400,-march=r5000) \
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-Wa,--trap
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CHECKFLAGS-$(CONFIG_CPU_R6000) += -D_MIPS_ISA=_MIPS_ISA_MIPS2
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cflags-$(CONFIG_CPU_R4300) += \
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$(call set_gccflags,r4300,mips3,r4300,mips3,mips2) \
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cflags-$(CONFIG_CPU_NEVADA) += $(call cc-options,-march=rm5200,-march=r5000) \
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-Wa,--trap
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CHECKFLAGS-$(CONFIG_CPU_R4300) += -D_MIPS_ISA=_MIPS_ISA_MIPS3
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cflags-$(CONFIG_CPU_VR41XX) += \
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$(call set_gccflags,r4100,mips3,r4600,mips3,mips2) \
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cflags-$(CONFIG_CPU_RM7000) += $(call cc-option,-march=rm7000,-march=r5000) \
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-Wa,--trap
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CHECKFLAGS-$(CONFIG_CPU_VR41XX) += -D_MIPS_ISA=_MIPS_ISA_MIPS3
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cflags-$(CONFIG_CPU_R4X00) += \
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$(call set_gccflags,r4600,mips3,r4600,mips3,mips2) \
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cflags-$(CONFIG_CPU_RM9000) += $(call cc-option,-march=rm9000,-march=r5000) \
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-Wa,--trap
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CHECKFLAGS-$(CONFIG_CPU_R4X00) += -D_MIPS_ISA=_MIPS_ISA_MIPS3
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cflags-$(CONFIG_CPU_TX49XX) += \
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$(call set_gccflags,r4600,mips3,r4600,mips3,mips2) \
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cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-march=sb1,-march=r5000) \
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-Wa,--trap
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CHECKFLAGS-$(CONFIG_CPU_TX49XX) += -D_MIPS_ISA=_MIPS_ISA_MIPS3
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cflags-$(CONFIG_CPU_MIPS32_R1) += \
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$(call set_gccflags,mips32,mips32,r4600,mips3,mips2) \
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cflags-$(CONFIG_CPU_R8000) += -march=r8000 -Wa,--trap
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cflags-$(CONFIG_CPU_R10000) += $(call cc-option,-march=r10000,-march=r8000) \
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-Wa,--trap
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CHECKFLAGS-$(CONFIG_CPU_MIPS32_R1) += -D_MIPS_ISA=_MIPS_ISA_MIPS32
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cflags-$(CONFIG_CPU_MIPS32_R2) += \
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$(call set_gccflags,mips32r2,mips32r2,r4600,mips3,mips2) \
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-Wa,--trap
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CHECKFLAGS-$(CONFIG_CPU_MIPS32_R2) += -D_MIPS_ISA=_MIPS_ISA_MIPS32
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cflags-$(CONFIG_CPU_MIPS64_R1) += \
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$(call set_gccflags,mips64,mips64,r4600,mips3,mips2) \
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-Wa,--trap
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CHECKFLAGS-$(CONFIG_CPU_MIPS64_R1) += -D_MIPS_ISA=_MIPS_ISA_MIPS64
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cflags-$(CONFIG_CPU_MIPS64_R2) += \
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$(call set_gccflags,mips64r2,mips64r2,r4600,mips3,mips2) \
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-Wa,--trap
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CHECKFLAGS-$(CONFIG_CPU_MIPS64_R2) += -D_MIPS_ISA=_MIPS_ISA_MIPS64
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cflags-$(CONFIG_CPU_R5000) += \
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$(call set_gccflags,r5000,mips4,r5000,mips4,mips2) \
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-Wa,--trap
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CHECKFLAGS-$(CONFIG_CPU_R5000) += -D_MIPS_ISA=_MIPS_ISA_MIPS4
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cflags-$(CONFIG_CPU_R5432) += \
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$(call set_gccflags,r5400,mips4,r5000,mips4,mips2) \
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-Wa,--trap
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CHECKFLAGS-$(CONFIG_CPU_R5432) += -D_MIPS_ISA=_MIPS_ISA_MIPS4
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cflags-$(CONFIG_CPU_NEVADA) += \
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$(call set_gccflags,rm5200,mips4,r5000,mips4,mips2) \
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-Wa,--trap
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CHECKFLAGS-$(CONFIG_CPU_NEVADA) += -D_MIPS_ISA=_MIPS_ISA_MIPS4
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cflags-$(CONFIG_CPU_RM7000) += \
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$(call set_gccflags,rm7000,mips4,r5000,mips4,mips2) \
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-Wa,--trap
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CHECKFLAGS-$(CONFIG_CPU_RM7000) += -D_MIPS_ISA=_MIPS_ISA_MIPS4
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cflags-$(CONFIG_CPU_RM9000) += \
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$(call set_gccflags,rm9000,mips4,r5000,mips4,mips2) \
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-Wa,--trap
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CHECKFLAGS-$(CONFIG_CPU_RM9000) += -D_MIPS_ISA=_MIPS_ISA_MIPS4
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cflags-$(CONFIG_CPU_SB1) += \
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$(call set_gccflags,sb1,mips64,r5000,mips4,mips2) \
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-Wa,--trap
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CHECKFLAGS-$(CONFIG_CPU_SB1) += -D_MIPS_ISA=_MIPS_ISA_MIPS64
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cflags-$(CONFIG_CPU_R8000) += \
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$(call set_gccflags,r8000,mips4,r8000,mips4,mips2) \
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-Wa,--trap
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CHECKFLAGS-$(CONFIG_CPU_R8000) += -D_MIPS_ISA=_MIPS_ISA_MIPS4
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cflags-$(CONFIG_CPU_R10000) += \
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$(call set_gccflags,r10000,mips4,r8000,mips4,mips2) \
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-Wa,--trap
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CHECKFLAGS-$(CONFIG_CPU_R10000) += -D_MIPS_ISA=_MIPS_ISA_MIPS4
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ifdef CONFIG_CPU_SB1
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ifdef CONFIG_SB1_PASS_1_WORKAROUNDS
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@ -748,6 +612,12 @@ CFLAGS += $(cflags-y)
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LDFLAGS += -m $(ld-emul)
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ifdef CONFIG_MIPS
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CHECKFLAGS += $(shell $(CC) $(CFLAGS) -dM -E -xc /dev/null | \
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egrep -vw '__GNUC_(MAJOR|MINOR|PATCHLEVEL)__' | \
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sed -e 's/^\#define /-D/' -e 's/ /="/' -e 's/$$/"/')
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endif
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OBJCOPYFLAGS += --remove-section=.reginfo
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#
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