initial commit

third_party/tinyusb/examples/build_system/make/toolchain/arm_clang.mk

@@ -0,0 +1,10 @@
+CC = clang
+CXX = clang++
+AS = $(CC) -x assembler-with-cpp
+LD = $(CC)
+
+GDB = $(CROSS_COMPILE)gdb
+OBJCOPY = llvm-objcopy
+SIZE = llvm-size
+
+include ${TOP}/examples/build_system/make/toolchain/gcc_common.mk

third_party/tinyusb/examples/build_system/make/toolchain/arm_gcc.mk

@@ -0,0 +1,20 @@
+# makefile for arm gcc toolchain
+
+# Can be set by family, default to ARM GCC
+CROSS_COMPILE ?= arm-none-eabi-
+
+CC = $(CROSS_COMPILE)gcc
+CXX = $(CROSS_COMPILE)g++
+AS = $(CC) -x assembler-with-cpp
+LD = $(CC)
+
+GDB = $(CROSS_COMPILE)gdb
+OBJCOPY = $(CROSS_COMPILE)objcopy
+SIZE = $(CROSS_COMPILE)size
+
+CFLAGS += \
+  -fsingle-precision-constant \
+
+LIBS += -lgcc -lm -lnosys
+
+include ${TOP}/examples/build_system/make/toolchain/gcc_common.mk

third_party/tinyusb/examples/build_system/make/toolchain/clang_rules.mk

@@ -0,0 +1 @@
+include ${TOP}/examples/build_system/make/toolchain/gcc_rules.mk

third_party/tinyusb/examples/build_system/make/toolchain/gcc_common.mk

@@ -0,0 +1,75 @@
+# ---------------------------------------
+# Compiler Flags
+# ---------------------------------------
+CFLAGS += \
+  -MD \
+  -ggdb \
+  -fdata-sections \
+  -ffunction-sections \
+  -fno-strict-aliasing \
+  -Wall \
+  -Wextra \
+  -Werror \
+  -Wfatal-errors \
+  -Wdouble-promotion \
+  -Wstrict-prototypes \
+  -Wstrict-overflow \
+  -Werror-implicit-function-declaration \
+  -Wfloat-equal \
+  -Wundef \
+  -Wshadow \
+  -Wwrite-strings \
+  -Wsign-compare \
+  -Wmissing-format-attribute \
+  -Wunreachable-code \
+  -Wcast-align \
+  -Wcast-function-type \
+  -Wcast-qual \
+  -Wnull-dereference \
+  -Wuninitialized \
+  -Wunused \
+  -Wreturn-type \
+  -Wredundant-decls \
+
+CFLAGS_CLANG += \
+  -Wno-error=unknown-warning-option
+
+#  -Wmissing-prototypes \
+# conversion is too strict for most mcu driver, may be disable sign/int/arith-conversion
+#  -Wconversion
+
+# Size Optimization as default
+CFLAGS_OPTIMIZED ?= -Os
+
+# Debugging/Optimization
+ifeq ($(DEBUG), 1)
+  CFLAGS += -O0
+  NO_LTO = 1
+else
+  CFLAGS += $(CFLAGS_OPTIMIZED)
+endif
+
+# ---------------------------------------
+# Linker Flags
+# ---------------------------------------
+LDFLAGS += \
+  -Wl,-Map=$@.map \
+  -Wl,--cref \
+  -Wl,-gc-sections \
+
+# renesas rx does not support --print-memory-usage flags
+ifneq ($(FAMILY),rx)
+LDFLAGS += -Wl,--print-memory-usage
+endif
+
+ifeq ($(TOOLCHAIN),gcc)
+CC_VERSION := $(shell $(CC) -dumpversion)
+CC_VERSION_MAJOR = $(firstword $(subst ., ,$(CC_VERSION)))
+
+# from version 12
+ifeq ($(strip $(if $(CMDEXE),\
+               $(shell if $(CC_VERSION_MAJOR) geq 12 (echo 1) else (echo 0)),\
+               $(shell expr $(CC_VERSION_MAJOR) \>= 12))), 1)
+LDFLAGS += -Wl,--no-warn-rwx-segment
+endif
+endif

third_party/tinyusb/examples/build_system/make/toolchain/gcc_rules.mk

@@ -0,0 +1,70 @@
+# Assembly files can be name with upper case .S, convert it to .s
+SRC_S := $(SRC_S:.S=.s)
+
+# Due to GCC LTO bug https://bugs.launchpad.net/gcc-arm-embedded/+bug/1747966
+# assembly file should be placed first in linking order
+# '_asm' suffix is added to object of assembly file
+OBJ += $(addprefix $(BUILD)/obj/, $(SRC_S:.s=_asm.o))
+OBJ += $(addprefix $(BUILD)/obj/, $(SRC_C:.c=.o))
+
+CFLAGS += -MD
+
+# LTO makes it difficult to analyze map file for optimizing size purpose
+# We will run this option in ci
+ifeq ($(NO_LTO),1)
+CFLAGS := $(filter-out -flto,$(CFLAGS))
+endif
+
+ifneq ($(CFLAGS_SKIP),)
+CFLAGS := $(filter-out $(CFLAGS_SKIP),$(CFLAGS))
+endif
+
+ifeq ($(TOOLCHAIN),clang)
+CFLAGS += $(CFLAGS_CLANG)
+LDFLAGS += $(CFLAGS) $(LDFLAGS_CLANG)
+else
+LDFLAGS += $(CFLAGS)
+endif
+
+ifdef LD_FILE
+LDFLAGS += -Wl,-T,$(TOP)/$(LD_FILE)
+endif
+
+ASFLAGS += $(CFLAGS)
+
+# libc
+ifneq ($(BOARD), spresense)
+LIBS += -lc
+endif
+
+# ---------------------------------------
+# Rules
+# ---------------------------------------
+
+# Compile .c file
+$(BUILD)/obj/%.o: %.c
+	@echo CC $(notdir $@)
+	@$(CC) $(CFLAGS) -c -o $@ $<
+
+# ASM sources lower case .s
+$(BUILD)/obj/%_asm.o: %.s
+	@echo AS $(notdir $@)
+	@$(AS) $(ASFLAGS) -c -o $@ $<
+
+# ASM sources upper case .S
+$(BUILD)/obj/%_asm.o: %.S
+	@echo AS $(notdir $@)
+	@$(AS) $(ASFLAGS) -c -o $@ $<
+
+OBJCOPY_BIN_OPTION ?=
+$(BUILD)/$(PROJECT).bin: $(BUILD)/$(PROJECT).elf
+	@echo CREATE $@
+	$(OBJCOPY) -O binary $(OBJCOPY_BIN_OPTION) $^ $@
+
+$(BUILD)/$(PROJECT).hex: $(BUILD)/$(PROJECT).elf
+	@echo CREATE $@
+	@$(OBJCOPY) -O ihex $^ $@
+
+$(BUILD)/$(PROJECT).elf: $(OBJ)
+	@echo LINK $@
+	@$(LD) -o $@ $(LDFLAGS) $^ -Wl,--start-group $(LIBS) -Wl,--end-group

third_party/tinyusb/examples/build_system/make/toolchain/riscv_gcc.mk

@@ -0,0 +1,20 @@
+# makefile for arm gcc toolchain
+
+# Can be set by family, default to ARM GCC
+CROSS_COMPILE ?= riscv-none-elf-
+
+CC = $(CROSS_COMPILE)gcc
+CXX = $(CROSS_COMPILE)g++
+AS = $(CC) -x assembler-with-cpp
+LD = $(CC)
+
+GDB = $(CROSS_COMPILE)gdb
+OBJCOPY = $(CROSS_COMPILE)objcopy
+SIZE = $(CROSS_COMPILE)size
+
+CFLAGS += \
+  -fsingle-precision-constant \
+
+LIBS += -lgcc -lm -lnosys
+
+include ${TOP}/examples/build_system/make/toolchain/gcc_common.mk