begriffs open source - cmsis-freertos/blob - Demo/RISC-V-Qemu-sifive_e-FreedomStudio/BuildEnvironment.mk

   1 #
   2 # File: BuildEnvironment.mk
   3 # Copyright (c) 2019, Dornerworks Ltd.
   4 #
   5
   6 BUILD_DIR = ./build
   7 CROSS_COMPILE_PREFIX = riscv32-unknown-elf
   8
   9 SDK_DIR = ./freedom-e-sdk
  10
  11 LINKER_SCRIPT = $(SDK_DIR)/env/freedom-e300-hifive1/flash.lds
  12 #-----------------------------------------------------------
  13 GCC     = $(CROSS_COMPILE_PREFIX)-gcc
  14 OBJCOPY = $(CROSS_COMPILE_PREFIX)-objcopy
  15 OBJDUMP = $(CROSS_COMPILE_PREFIX)-objdump
  16 AR      = $(CROSS_COMPILE_PREFIX)-ar
  17 RANLIB  = $(CROSS_COMPILE_PREFIX)-ranlib
  18 GDB     = $(CROSS_COMPILE_PREFIX)-gdb
  19
  20 # if using the multi-arch (riscv64-unknown-elf-gcc):
  21 ARCH_FLAGS = -march=rv32imac -mabi=ilp32 -mcmodel=medany
  22 # Basic CFLAGS:
  23 CFLAGS  = -Wall -Wextra -O0 -g3 -msmall-data-limit=8 -std=gnu11
  24 CFLAGS += -ffunction-sections -fdata-sections -fno-builtin-printf
  25 CFLAGS += -DDONT_USE_PLIC -DDONT_USE_M_TIME
  26 CFLAGS += -include sys/cdefs.h
  27 CFLAGS += $(ARCH_FLAGS)
  28 # These flags are for outputing *.d dependency files for make
  29 CFLAGS += -MT"$@" -MMD -MP -MF"$(@:%.o=%.d)" -MT"$(@)"
  30
  31 ASMFLAGS =  -O0 -g3
  32 ASMFLAGS += $(ARCH_FLAGS)
  33 ASMFLAGS += -DportasmHANDLE_INTERRUPT=handle_trap
  34 ASMFLAGS += -msmall-data-limit=8
  35 ASMFLAGS += -ffunction-sections -fdata-sections
  36 ASMFLAGS += -x assembler-with-cpp
  37 ASMFLAGS += -MT"$@" -MMD -MP -MF"$(@:%.o=%.d)" -MT"$(@)"
  38
  39 # Linker arguments __________________________________________
  40 LDFLAGS :=  -Xlinker --gc-sections -Xlinker --defsym=__stack_size=1K
  41 LDFLAGS += -O0 -g3
  42 LDFLAGS += -ffunction-sections -fdata-sections --specs=nano.specs
  43 LDFLAGS += -nostartfiles
  44 LDFLAGS += -T $(LINKER_SCRIPT)
  45 LDFLAGS += -L../
  46 LDFLAGS += -Wl,--start-group -Wl,--end-group
  47 LDFLAGS += -Wl,--wrap=malloc -Wl,--wrap=free -Wl,--wrap=open -Wl,--wrap=lseek -Wl,--wrap=read -Wl,--wrap=write
  48 LDFLAGS += -Wl,--wrap=fstat -Wl,--wrap=stat -Wl,--wrap=close -Wl,--wrap=link -Wl,--wrap=unlink -Wl,--wrap=execve
  49 LDFLAGS += -Wl,--wrap=fork -Wl,--wrap=getpid -Wl,--wrap=kill -Wl,--wrap=wait -Wl,--wrap=isatty -Wl,--wrap=times
  50 LDFLAGS += -Wl,--wrap=sbrk -Wl,--wrap=_exit -Wl,--wrap=puts -Wl,--wrap=_malloc -Wl,--wrap=_free -Wl,--wrap=_open
  51 LDFLAGS += -Wl,--wrap=_lseek -Wl,--wrap=_read -Wl,--wrap=_write -Wl,--wrap=_fstat -Wl,--wrap=_stat -Wl,--wrap=_close
  52 LDFLAGS += -Wl,--wrap=_link -Wl,--wrap=_unlink -Wl,--wrap=_execve -Wl,--wrap=_fork -Wl,--wrap=_getpid -Wl,--wrap=_kill
  53 LDFLAGS += -Wl,--wrap=_wait -Wl,--wrap=_isatty -Wl,--wrap=_times -Wl,--wrap=_sbrk -Wl,--wrap=__exit -Wl,--wrap=_puts