1  set(CMAKE_SYSTEM_NAME               Generic)
 2  set(CMAKE_SYSTEM_PROCESSOR          arm)
 3  
 4  set(CMAKE_C_COMPILER_FORCED TRUE)
 5  set(CMAKE_CXX_COMPILER_FORCED TRUE)
 6  set(CMAKE_C_COMPILER_ID GNU)
 7  set(CMAKE_CXX_COMPILER_ID GNU)
 8  
 9  # Some default GCC settings
10  # arm-none-eabi- must be part of path environment
11  set(TOOLCHAIN_PREFIX                arm-none-eabi-)
12  
13  set(CMAKE_C_COMPILER                ${TOOLCHAIN_PREFIX}gcc)
14  set(CMAKE_ASM_COMPILER              ${CMAKE_C_COMPILER})
15  set(CMAKE_CXX_COMPILER              ${TOOLCHAIN_PREFIX}g++)
16  set(CMAKE_LINKER                    ${TOOLCHAIN_PREFIX}g++)
17  set(CMAKE_OBJCOPY                   ${TOOLCHAIN_PREFIX}objcopy)
18  set(CMAKE_SIZE                      ${TOOLCHAIN_PREFIX}size)
19  
20  set(CMAKE_EXECUTABLE_SUFFIX_ASM     ".elf")
21  set(CMAKE_EXECUTABLE_SUFFIX_C       ".elf")
22  set(CMAKE_EXECUTABLE_SUFFIX_CXX     ".elf")
23  
24  set(CMAKE_TRY_COMPILE_TARGET_TYPE STATIC_LIBRARY)
25  
26  # MCU specific flags
27  set(TARGET_FLAGS "-mcpu=cortex-m4 -mfpu=fpv4-sp-d16 -mfloat-abi=hard ")
28  
29  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${TARGET_FLAGS}")
30  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Wextra -Wpedantic -fdata-sections -ffunction-sections")
31  if(CMAKE_BUILD_TYPE MATCHES Debug)
32      set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -O0 -g3")
33  endif()
34  if(CMAKE_BUILD_TYPE MATCHES Release)
35      set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Os -g0")
36  endif()
37  
38  set(CMAKE_ASM_FLAGS "${CMAKE_C_FLAGS} -x assembler-with-cpp -MMD -MP")
39  set(CMAKE_CXX_FLAGS "${CMAKE_C_FLAGS} -fno-rtti -fno-exceptions -fno-threadsafe-statics")
40  
41  set(CMAKE_C_LINK_FLAGS "${TARGET_FLAGS}")
42  set(CMAKE_C_LINK_FLAGS "${CMAKE_C_LINK_FLAGS} -T \"${CMAKE_SOURCE_DIR}/STM32F407ZGTx_FLASH.ld\"")
43  set(CMAKE_C_LINK_FLAGS "${CMAKE_C_LINK_FLAGS} --specs=nano.specs")
44  set(CMAKE_C_LINK_FLAGS "${CMAKE_C_LINK_FLAGS} -Wl,-Map=${CMAKE_PROJECT_NAME}.map -Wl,--gc-sections")
45  set(CMAKE_C_LINK_FLAGS "${CMAKE_C_LINK_FLAGS} -Wl,--start-group -lc -lm -Wl,--end-group")
46  set(CMAKE_C_LINK_FLAGS "${CMAKE_C_LINK_FLAGS} -Wl,--print-memory-usage")
47  
48  set(CMAKE_CXX_LINK_FLAGS "${CMAKE_C_LINK_FLAGS} -Wl,--start-group -lstdc++ -lsupc++ -Wl,--end-group")