stm32f405-Makefile-源码分析8

blake

文件路径:

1. phospherus/stmhal/Makefile

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源码分析:

1. # Select hardware floating-point support
   
2. #选择硬件浮点支持
   
3. ifeq ($(CMSIS_MCU),$(filter $(CMSIS_MCU),STM32F767xx STM32F769xx))
   
4. CFLAGS_CORTEX_M += -mfpu=fpv5-d16 -mfloat-abi=hard
   
5. else
   
6. CFLAGS_CORTEX_M += -mfpu=fpv4-sp-d16 -mfloat-abi=hard
   
7. endif
   
8. 
   
9. # Options for particular MCU series
   
10. #特别的MCU系列选项
    
11. CFLAGS_MCU_f4 = $(CFLAGS_CORTEX_M) -mtune=cortex-m4 -mcpu=cortex-m4 -DMCU_SERIES_F4
    
12. CFLAGS_MCU_f7 = $(CFLAGS_CORTEX_M) -mtune=cortex-m7 -mcpu=cortex-m7 -DMCU_SERIES_F7
    
13. CFLAGS_MCU_l4 = $(CFLAGS_CORTEX_M) -mtune=cortex-m4 -mcpu=cortex-m4 -DMCU_SERIES_L4
    
14. 
    
15. CFLAGS = $(INC) -Wall -Wpointer-arith -Werror -std=gnu99 -nostdlib $(CFLAGS_MOD) $(CFLAGS_EXTRA)
    
16. CFLAGS += -D$(CMSIS_MCU)
    
17. CFLAGS += $(CFLAGS_MCU_$(MCU_SERIES))
    
18. CFLAGS += $(COPT)
    
19. CFLAGS += -Iboards/$(BOARD)
    
20. CFLAGS += -DSTM32_HAL_H='<stm32$(MCU_SERIES)xx_hal.h>'
    
21. 
    
22. ifeq ($(MICROPY_FLOAT_IMPL),double)
    
23. CFLAGS += -DMICROPY_FLOAT_IMPL=MICROPY_FLOAT_IMPL_DOUBLE
    
24. else
    
25. CFLAGS += -DMICROPY_FLOAT_IMPL=MICROPY_FLOAT_IMPL_FLOAT
    
26. CFLAGS += -fsingle-precision-constant -Wdouble-promotion
    
27. endif
    
28. 
    
29. LDFLAGS = -nostdlib -L $(LD_DIR) -T $(LD_FILE) -Map=$(@:.elf=.map) --cref
    
30. LIBS = $(shell $(CC) $(CFLAGS) -print-libgcc-file-name)
    
31. 
    
32. # Remove uncalled code from the final image.
    
33. #从最终的镜像文件中删除未调用的代码
    
34. CFLAGS += -fdata-sections -ffunction-sections
    
35. LDFLAGS += --gc-sections

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