dce070ebe0
When BOARD=fomu, use the riscv cross-compiler. Otherwise, use the
default arm compiler. This can be overridden by passing
CROSS_COMIPLE on the command line.
Note that there are now three common risc-v prefixes:
- riscv32-unknown-elf- : Common for users who compile their own
- riscv64-unknown-elf- : Upstream multiarch toolchain from SiFive
- riscv-none-embed- : xPack embedded version of SiFive toolchain
Here we assume users are using the `riscv-none-embed-` toolchain from
xPack, because it appears to be growing more common. Additionally,
there is much confusion surrounding `riscv64-unknown-elf-`, which
actually includes both 32- and 64-bit runtimes and can generate software
for both.
Signed-off-by: Sean Cross <sean@xobs.io>
99 lines
1.9 KiB
Makefile
99 lines
1.9 KiB
Makefile
#
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# Common make definition for all examples
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#
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# Compiler
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ifeq ($(BOARD), fomu)
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CROSS_COMPILE = riscv-none-embed-
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else
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CROSS_COMPILE = arm-none-eabi-
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endif
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CC = $(CROSS_COMPILE)gcc
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CXX = $(CROSS_COMPILE)g++
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OBJCOPY = $(CROSS_COMPILE)objcopy
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SIZE = $(CROSS_COMPILE)size
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MKDIR = mkdir
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SED = sed
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CP = cp
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RM = rm
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PYTHON ?= python
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check_defined = \
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$(strip $(foreach 1,$1, \
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$(call __check_defined,$1,$(strip $(value 2)))))
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__check_defined = \
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$(if $(value $1),, \
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$(error Undefined make flag: $1$(if $2, ($2))))
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define newline
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endef
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# Select the board to build for.
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ifeq ($(BOARD),)
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$(info You must provide a BOARD parameter with 'BOARD=')
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$(info Supported boards are:)
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$(info $(sort $(subst /.,,$(subst $(TOP)/hw/bsp/, $(newline)-,$(wildcard $(TOP)/hw/bsp/*/.)))))
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$(error BOARD not defined)
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else
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ifeq ($(wildcard $(TOP)/hw/bsp/$(BOARD)/.),)
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$(error Invalid BOARD specified)
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endif
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endif
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# Build directory
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BUILD = _build/build-$(BOARD)
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# Board specific
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include $(TOP)/hw/bsp/$(BOARD)/board.mk
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# Include all source C in board folder
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SRC_C += hw/bsp/board.c
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SRC_C += $(subst $(TOP)/,,$(wildcard $(TOP)/hw/bsp/$(BOARD)/*.c))
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# Compiler Flags
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CFLAGS += \
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-fsingle-precision-constant \
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-fno-strict-aliasing \
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-Wdouble-promotion \
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-Wno-endif-labels \
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-Wstrict-prototypes \
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-Wall \
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-Wextra \
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-Werror \
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-Werror-implicit-function-declaration \
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-Wfatal-errors \
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-Wfloat-equal \
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-Wundef \
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-Wshadow \
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-Wwrite-strings \
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-Wsign-compare \
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-Wmissing-format-attribute \
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-Wno-deprecated-declarations \
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-Wnested-externs \
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-Wunreachable-code \
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-Wno-error=lto-type-mismatch \
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-ffunction-sections \
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-fdata-sections
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# This causes lots of warning with nrf5x build due to nrfx code
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# CFLAGS += -Wcast-align
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# Debugging/Optimization
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ifeq ($(DEBUG), 1)
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CFLAGS += -Og -ggdb
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else
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ifneq ($(BOARD),spresense)
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CFLAGS += -flto -Os
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else
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CFLAGS += -Os
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endif
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endif
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# TUSB Logging option
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ifneq ($(LOG),)
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CFLAGS += -DCFG_TUSB_DEBUG=$(LOG)
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endif
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