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70 lines
2.2 KiB
Makefile
70 lines
2.2 KiB
Makefile
# Target triple for the build.
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export TARGET_ARCH ?= mips-mti-elf
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export ABI=32
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# Default values for the linker script symbols listed below are
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# defined in the linker script.
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# These are linker script symbols that are prefixed with '__"
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priv_symbols = MEMORY_BASE MEMORY_SIZE STACK
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priv_symbols += ENABLE_XPA
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priv_symbols += FLUSH_TO_ZERO
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priv_symbols += FLASH_START APP_START FLASH_APP_START
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priv_symbols += ISR_VEC_SPACE ISR_VECTOR_COUNT
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comma := ,
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# A bit of makefile magic:
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# foreach symbol in overridable ld-symbols :
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# If symbol has a value, produce a linker argument for that symbol.
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MIPS_HAL_LDFLAGS = $(foreach a,$(priv_symbols),$(if $($a),-Wl$(comma)--defsym$(comma)__$(call lowercase,$(a))=$($a)))
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ifeq ($(ROMABLE),1)
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MIPS_HAL_LDFLAGS += -T bootcode.ld
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endif
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# define build specific options
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# Remove -std=gnu99 once the MIPS toolchain headers are updated to include upstream
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# newlib commit 81c17949f0419d1c4fee421c60987ea1149522ae
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# https://cygwin.com/git/gitweb.cgi?p=newlib-cygwin.git;a=commitdiff;h=81c17949f0419d1c4fee421c60987ea1149522ae
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# Otherwise we get an error about a missing declaration of strnlen in some parts.
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ifeq (, $(filter -std=%, $(CFLAGS)))
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CFLAGS += -std=gnu99
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endif
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CFLAGS_CPU = -EL -mabi=$(ABI)
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CFLAGS_LINK = -ffunction-sections -fno-builtin -fshort-enums -fdata-sections
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CFLAGS_DBG = -g3
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CFLAGS_OPT = -Os
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CFLAGS += $(CFLAGS_CPU) $(CFLAGS_LINK) $(CFLAGS_OPT) $(CFLAGS_DBG)
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ifeq ($(USE_HARD_FLOAT),1)
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CFLAGS += -mhard-float -DMIPS_HARD_FLOAT
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else
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#hard-float is the default so we must set soft-float
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CFLAGS += -msoft-float
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export LINKFLAGS += -msoft-float
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endif
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ifeq ($(USE_DSP),1)
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CFLAGS += -mdsp -DMIPS_DSP
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endif
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ifeq ($(TOOLCHAIN),llvm)
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# The MIPS toolchain headers in assembly mode are not compatible with Clang
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CCAS = $(PREFIX)gcc
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CCASUWFLAGS += -target $(TARGET_ARCH)
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endif
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ASFLAGS += $(CFLAGS_CPU) $(CFLAGS_OPT) $(CFLAGS_DBG)
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export LINKFLAGS += $(MIPS_HAL_LDFLAGS)
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export LINKFLAGS += -L$(RIOTCPU)/$(CPU)/ldscripts
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export LINKFLAGS += $(CFLAGS_CPU) $(CFLAGS_DBG) $(CFLAGS_OPT)
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export LINKFLAGS += -Wl,--gc-sections
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OPTIONAL_CFLAGS_BLACKLIST += -Wformat-overflow
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OPTIONAL_CFLAGS_BLACKLIST += -Wformat-truncation
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OPTIONAL_CFLAGS_BLACKLIST += -gz
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