scons make 编译失败，求原因

发布于 2021-09-16 08:04:44 浏览：1414 订阅该版

请教大家出错的原因，而且为什么make 和scons编译结果不一样呢？
步骤

scons —target=makefile

2 make

使用scons 编译
3

rtconfig.py

import os
ARCH     = 'risc-v'
CPU      = 'bumblebee'
CROSS_TOOL  = 'gcc'
if os.getenv('RTT_CC'):
    CROSS_TOOL = os.getenv('RTT_CC')
if  CROSS_TOOL == 'gcc':
    PLATFORM    = 'gcc'
    EXEC_PATH   = r'E:/DevBoard/ARTT/rt-studio/RT-ThreadStudio/repo/Extract/ToolChain_Support_Packages/WCH/RISC-V-GCC-WCH/8.2.0/bin'
    #EXEC_PATH   = r'/opt/unknown-gcc/bin'
else:
    print('Please make sure your toolchains is GNU GCC!')
    exit(0)
if os.getenv('RTT_EXEC_PATH'):
    EXEC_PATH = os.getenv('RTT_EXEC_PATH')
BUILD = 'debug'
CORE = 'risc-v'
MAP_FILE = 'rtthread.map'
LINK_FILE = './linkscripts/link.lds'
TARGET_NAME = 'rtthread.hex'
if PLATFORM == 'gcc':
    PREFIX = 'riscv-none-embed-'
    CC = PREFIX + 'gcc'
    CXX= PREFIX + 'g++'
    AS = PREFIX + 'gcc'
    AR = PREFIX + 'ar'
    LINK = PREFIX + 'gcc'
    TARGET_EXT = 'elf'
    SIZE = PREFIX + 'size'
    OBJDUMP = PREFIX + 'objdump'
    OBJCPY = PREFIX + 'objcopy'
    DEVICE = ' -march=rv32imac -mabi=ilp32 -DUSE_PLIC -DUSE_M_TIME -DNO_INIT -mcmodel=medany -msmall-data-limit=8 -L.  -nostartfiles  -lc '
    CFLAGS = DEVICE
    CFLAGS += ' -save-temps=obj'
    AFLAGS = '-c'+ DEVICE + ' -x assembler-with-cpp'
    AFLAGS += ' -IIlibraries/Core -Ilibraries/WCH32V103_std_peripheral -Ilibraries/WCH32V103_std_peripheral/inc'
    LFLAGS = DEVICE
    LFLAGS += ' -Wl,--gc-sections,-cref,-Map=' + MAP_FILE
    LFLAGS += ' -T ' + LINK_FILE
    LFLAGS += ' -Wl,-wrap=memset'
    CPATH = ''
    LPATH = ''
    if BUILD == 'debug':
        CFLAGS += ' -O0 -g3'
        AFLAGS += ' -g3'
    else:
        CFLAGS += ' -O2'
    POST_ACTION = OBJCPY + ' -O binary $TARGET ' + TARGET_NAME + '\n'
    POST_ACTION += SIZE + ' $TARGET\n'

link.lds

ENTRY( _start )
__stack_size = 2048;
PROVIDE( _stack_size = __stack_size );
MEMORY
{
    FLASH (rx) : ORIGIN = 0x00000000, LENGTH = 64K
    RAM (xrw) : ORIGIN = 0x20000000, LENGTH = 20K
}
SECTIONS
{
    .init :
    {
        _sinit = .;
        . = ALIGN(4);
        KEEP(*(SORT_NONE(.init)))
        . = ALIGN(4);
        _einit = .;
    } >FLASH AT>FLASH
  .vector :
  {
      *(.vector);
      . = ALIGN(64);
  } >FLASH AT>FLASH
    .text :
    {
        . = ALIGN(4);
        *(.text)
        *(.text.*)
        *(.rodata)
        *(.rodata*)
        *(.glue_7)
        *(.glue_7t)
        *(.gnu.linkonce.t.*)
         /* section information for finsh shell */
    . = ALIGN(4);
    __fsymtab_start = .;
    KEEP(*(FSymTab))
    __fsymtab_end = .;
    . = ALIGN(4);
    __vsymtab_start = .;
    KEEP(*(VSymTab))
    __vsymtab_end = .;
    . = ALIGN(4);
    /* section information for initial. */
    . = ALIGN(4);
    __rt_init_start = .;
    KEEP(*(SORT(.rti_fn*)))
    __rt_init_end = .;
    . = ALIGN(4);
    /* section information for modules */
    . = ALIGN(4);
    __rtmsymtab_start = .;
    KEEP(*(RTMSymTab))
    __rtmsymtab_end = .;
        . = ALIGN(4);
    } >FLASH AT>FLASH 
    .fini :
    {
        KEEP(*(SORT_NONE(.fini)))
        . = ALIGN(4);
    } >FLASH AT>FLASH
    PROVIDE( _etext = . );
    PROVIDE( _eitcm = . );    
    .preinit_array  :
    {
      PROVIDE_HIDDEN (__preinit_array_start = .);
      KEEP (*(.preinit_array))
      PROVIDE_HIDDEN (__preinit_array_end = .);
    } >FLASH AT>FLASH 
    .init_array     :
    {
      PROVIDE_HIDDEN (__init_array_start = .);
      KEEP (*(SORT_BY_INIT_PRIORITY(.init_array.*) SORT_BY_INIT_PRIORITY(.ctors.*)))
      KEEP (*(.init_array EXCLUDE_FILE (*crtbegin.o *crtbegin?.o *crtend.o *crtend?.o ) .ctors))
      PROVIDE_HIDDEN (__init_array_end = .);
    } >FLASH AT>FLASH 
    .fini_array     :
    {
      PROVIDE_HIDDEN (__fini_array_start = .);
      KEEP (*(SORT_BY_INIT_PRIORITY(.fini_array.*) SORT_BY_INIT_PRIORITY(.dtors.*)))
      KEEP (*(.fini_array EXCLUDE_FILE (*crtbegin.o *crtbegin?.o *crtend.o *crtend?.o ) .dtors))
      PROVIDE_HIDDEN (__fini_array_end = .);
    } >FLASH AT>FLASH 
    .ctors          :
    {
      /* gcc uses crtbegin.o to find the start of
         the constructors, so we make sure it is
         first.  Because this is a wildcard, it
         doesn't matter if the user does not
         actually link against crtbegin.o; the
         linker won't look for a file to match a
         wildcard.  The wildcard also means that it
         doesn't matter which directory crtbegin.o
         is in.  */
      KEEP (*crtbegin.o(.ctors))
      KEEP (*crtbegin?.o(.ctors))
      /* We don't want to include the .ctor section from
         the crtend.o file until after the sorted ctors.
         The .ctor section from the crtend file contains the
         end of ctors marker and it must be last */
      KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o ) .ctors))
      KEEP (*(SORT(.ctors.*)))
      KEEP (*(.ctors))
    } >FLASH AT>FLASH 
    .dtors          :
    {
      KEEP (*crtbegin.o(.dtors))
      KEEP (*crtbegin?.o(.dtors))
      KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o ) .dtors))
      KEEP (*(SORT(.dtors.*)))
      KEEP (*(.dtors))
    } >FLASH AT>FLASH 
    .dalign :
    {
        . = ALIGN(4);
        PROVIDE(_data_vma = .);
    } >RAM AT>FLASH    
    .dlalign :
    {
        . = ALIGN(4); 
        PROVIDE(_data_lma = .);
    } >FLASH AT>FLASH
    .data :
    {
        *(.gnu.linkonce.r.*)
        *(.data .data.*)
        *(.gnu.linkonce.d.*)
        . = ALIGN(8);
        PROVIDE( __global_pointer$ = . + 0x800 );
        *(.sdata .sdata.*)
        *(.sdata2.*)
        *(.gnu.linkonce.s.*)
        . = ALIGN(8);
        *(.srodata.cst16)
        *(.srodata.cst8)
        *(.srodata.cst4)
        *(.srodata.cst2)
        *(.srodata .srodata.*)
        . = ALIGN(4);
        PROVIDE( _edata = .);
    } >RAM AT>FLASH
    .bss :
    {
        . = ALIGN(4);
        PROVIDE( _sbss = .);
          *(.sbss*)
        *(.gnu.linkonce.sb.*)
        *(.bss*)
         *(.gnu.linkonce.b.*)        
        *(COMMON*)
        . = ALIGN(4);
        PROVIDE( _ebss = .);
    } >RAM AT>FLASH
    PROVIDE( _end = _ebss);
    PROVIDE( end = . );
    .stack ORIGIN(RAM) + LENGTH(RAM) - __stack_size :
    {
        . = ALIGN(4);
        PROVIDE(_susrstack = . );
        . = . + __stack_size;
        PROVIDE( _eusrstack = .);
    } >RAM 
}

李肯陪你玩赚嵌入式 认证专家 2021-09-16

2022年度和2023年度RT-Thread社区优秀开源布道师，COC深圳城市开发者社区主理人，专注于嵌入式物联网的架构设计

看你的使用scons编译报错，
undefined reference to `xxx’
大概率是这个xxx函数的实现库你没有加入链接列表。
先确认下这个xxx函数在哪里实现的，是你的源码还是库里面实现的。

xianting77 2021-09-16

Whatever brings you down, will eventlly make you stronger!

谢谢你的回复，想请教下，是否有命令或者生成的文件查看链接列表，或者被的编译的文件列表或者路径。

李肯陪你玩赚嵌入式 2021-09-16

2022年度和2023年度RT-Thread社区优秀开源布道师，COC深圳城市开发者社区主理人，专注于嵌入式物联网的架构设计

在使用scons编译时，加上参数
scons —verbose
一般到最后链接那一步就可以看到当前你链接哪里库，-lxxx 后面就是你的库名字；
以下是一个参考：

arm-none-eabi-g++ -o rtthread.elf -march=armv7-a -marm -msoft-float -nostartfiles -Wl,--gc-sections,-Map=rtthread.map,-cref,-u,system_vectors -T link.lds build/drivers/drv_sdio.o build/drivers/board.o build/drivers/drv_keyboard.o build/drivers/drv_timer.o build/drivers/drv_smc911x.o build/drivers/serial.o build/drivers/drv_mouse.o build/drivers/secondary_cpu.o build/applications/lcd_init.o build/applications/main.o build/applications/mnt.o build/kernel/src/memheap.o build/kernel/src/irq.o build/kernel/src/mem.o build/kernel/src/scheduler.o build/kernel/src/clock.o build/kernel/src/mempool.o build/kernel/src/object.o build/kernel/src/timer.o build/kernel/src/thread.o build/kernel/src/ipc.o build/kernel/src/device.o build/kernel/src/signal.o build/kernel/src/idle.o build/kernel/src/cpu.o build/kernel/src/kservice.o build/kernel/src/components.o build/kernel/libcpu/arm/common/backtrace.o build/kernel/libcpu/arm/common/showmem.o build/kernel/libcpu/arm/common/div0.o build/kernel/libcpu/arm/cortex-a/stack.o build/kernel/libcpu/arm/cortex-a/context_gcc.o build/kernel/libcpu/arm/cortex-a/cpu.o build/kernel/libcpu/arm/cortex-a/cache.o build/kernel/libcpu/arm/cortex-a/start_gcc.o build/kernel/libcpu/arm/cortex-a/cp15_gcc.o build/kernel/libcpu/arm/cortex-a/mmu.o build/kernel/libcpu/arm/cortex-a/trap.o build/kernel/libcpu/arm/cortex-a/gic.o build/kernel/libcpu/arm/cortex-a/interrupt.o build/kernel/libcpu/arm/cortex-a/vector_gcc.o build/kernel/components/cplusplus/cxx_Thread.o build/kernel/components/cplusplus/cxx_Semaphore.o build/kernel/components/cplusplus/cxx_crt.o build/kernel/components/cplusplus/cxx_Mutex.o build/kernel/components/cplusplus/crt_init.o build/kernel/components/net/sal_socket/dfs_net/dfs_net.o build/kernel/components/net/sal_socket/socket/net_sockets.o build/kernel/components/net/sal_socket/src/sal_socket.o build/kernel/components/net/sal_socket/socket/net_netdb.o build/kernel/components/net/sal_socket/impl/af_inet_lwip.o build/kernel/components/net/netdev/src/netdev_ipaddr.o build/kernel/components/net/netdev/src/netdev.o build/kernel/components/net/lwip-2.1.2/src/core/timeouts.o build/kernel/components/net/lwip-2.1.2/src/core/ipv4/ip4.o build/kernel/components/net/lwip-2.1.2/src/core/sys.o build/kernel/components/net/lwip-2.1.2/src/netif/lowpan6.o build/kernel/components/net/lwip-2.1.2/src/core/altcp_alloc.o build/kernel/components/net/lwip-2.1.2/src/core/udp.o build/kernel/components/net/lwip-2.1.2/src/api/sockets.o build/kernel/components/net/lwip-2.1.2/src/core/tcp_in.o build/kernel/components/net/lwip-2.1.2/src/core/raw.o build/kernel/components/net/lwip-2.1.2/src/core/netif.o build/kernel/components/net/lwip-2.1.2/src/api/api_lib.o build/kernel/components/net/lwip-2.1.2/src/core/ipv4/etharp.o build/kernel/components/net/lwip-2.1.2/src/core/pbuf.o build/kernel/components/net/lwip-2.1.2/src/core/ipv4/dhcp.o build/kernel/components/net/lwip-2.1.2/src/apps/ping/ping.o build/kernel/components/net/lwip-2.1.2/src/netif/ethernet.o build/kernel/components/net/lwip-2.1.2/src/core/dns.o build/kernel/components/net/lwip-2.1.2/src/api/netbuf.o build/kernel/components/net/lwip-2.1.2/src/core/stats.o build/kernel/components/net/lwip-2.1.2/src/api/if_api.o build/kernel/components/net/lwip-2.1.2/src/core/ipv4/autoip.o build/kernel/components/net/lwip-2.1.2/src/api/netifapi.o build/kernel/components/net/lwip-2.1.2/src/api/api_msg.o build/kernel/components/net/lwip-2.1.2/src/arch/sys_arch.o build/kernel/components/net/lwip-2.1.2/src/core/ipv4/ip4_frag.o build/kernel/components/net/lwip-2.1.2/src/core/tcp_out.o build/kernel/components/net/lwip-2.1.2/src/core/ipv4/igmp.o build/kernel/components/net/lwip-2.1.2/src/core/def.o build/kernel/components/net/lwip-2.1.2/src/core/ipv4/ip4_addr.o build/kernel/components/net/lwip-2.1.2/src/core/ip.o build/kernel/components/net/lwip-2.1.2/src/api/tcpip.o build/kernel/components/net/lwip-2.1.2/src/core/inet_chksum.o build/kernel/components/net/lwip-2.1.2/src/core/init.o build/kernel/components/net/lwip-2.1.2/src/api/err.o build/kernel/components/net/lwip-2.1.2/src/core/tcp.o build/kernel/components/net/lwip-2.1.2/src/core/altcp_tcp.o build/kernel/components/net/lwip-2.1.2/src/core/memp.o build/kernel/components/net/lwip-2.1.2/src/api/netdb.o build/kernel/components/net/lwip-2.1.2/src/core/altcp.o build/kernel/components/net/lwip-2.1.2/src/netif/ethernetif.o build/kernel/components/net/lwip-2.1.2/src/core/ipv4/icmp.o build/kernel/components/libc/compilers/common/time.o build/kernel/components/libc/compilers/common/stdlib.o build/kernel/components/libc/compilers/common/unistd.o build/kernel/components/libc/compilers/common/delay.o build/kernel/components/libc/compilers/newlib/syscalls.o build/kernel/components/libc/compilers/newlib/stdio.o build/kernel/components/libc/compilers/newlib/libc.o build/kernel/components/libc/pthreads/semaphore.o build/kernel/components/libc/pthreads/pthread.o build/kernel/components/libc/pthreads/pthread_spin.o build/kernel/components/libc/pthreads/pthread_tls.o build/kernel/components/libc/pthreads/mqueue.o build/kernel/components/libc/pthreads/pthread_cond.o build/kernel/components/libc/pthreads/pthread_attr.o build/kernel/components/libc/pthreads/sched.o build/kernel/components/libc/pthreads/pthread_barrier.o build/kernel/components/libc/pthreads/pthread_rwlock.o build/kernel/components/libc/pthreads/pthread_mutex.o build/kernel/components/libc/signal/posix_signal.o build/kernel/components/libc/termios/posix_termios.o build/kernel/components/libc/aio/posix_aio.o build/kernel/components/libc/getline/posix_getline.o build/kernel/components/libc/mmap/posix_mmap.o build/kernel/components/lwp/lwp.o build/kernel/components/lwp/lwp_mem.o build/kernel/components/lwp/arch/arm/cortex-a/lwp_gcc.o build/kernel/components/lwp/lwp_memheap.o build/kernel/components/lwp/lwp_syscall.o build/kernel/components/dfs/src/dfs_posix.o build/kernel/components/dfs/src/dfs.o build/kernel/components/dfs/src/dfs_file.o build/kernel/components/dfs/src/dfs_fs.o build/kernel/components/dfs/src/poll.o build/kernel/components/dfs/src/select.o build/kernel/components/dfs/filesystems/devfs/devfs.o build/kernel/components/dfs/filesystems/elmfat/ff.o build/kernel/components/dfs/filesystems/elmfat/dfs_elm.o build/kernel/components/dfs/filesystems/elmfat/ffunicode.o build/kernel/components/dfs/filesystems/ramfs/dfs_ramfs.o build/kernel/components/dfs/filesystems/romfs/romfs.o build/kernel/components/dfs/filesystems/romfs/dfs_romfs.o build/kernel/components/finsh/msh_file.o build/kernel/components/finsh/msh.o build/kernel/components/finsh/shell.o build/kernel/components/drivers/mtd/mtd_nand.o build/kernel/components/drivers/mtd/mtd_nor.o build/kernel/components/drivers/src/ringblk_buf.o build/kernel/components/drivers/src/dataqueue.o build/kernel/components/drivers/src/ringbuffer.o build/kernel/components/drivers/src/pipe.o build/kernel/components/drivers/src/workqueue.o build/kernel/components/drivers/src/completion.o build/kernel/components/drivers/src/waitqueue.o build/kernel/components/drivers/serial/serial.o build/kernel/components/drivers/watchdog/watchdog.o build/kernel/components/drivers/i2c/i2c-bit-ops.o build/kernel/components/drivers/i2c/i2c_core.o build/kernel/components/drivers/i2c/i2c_dev.o build/kernel/components/drivers/sdio/sdio.o build/kernel/components/drivers/sdio/block_dev.o build/kernel/components/drivers/sdio/mmc.o build/kernel/components/drivers/sdio/sd.o build/kernel/components/drivers/sdio/mmcsd_core.o build/kernel/components/drivers/spi/sfud/src/sfud.o build/kernel/components/drivers/spi/spi_dev.o build/kernel/components/drivers/spi/spi_core.o build/kernel/components/drivers/spi/spi_flash_sfud.o build/kernel/components/drivers/spi/spi_msd.o build/kernel/components/drivers/spi/sfud/src/sfud_sfdp.o build/kernel/components/drivers/misc/pin.o build/kernel/components/drivers/rtc/soft_rtc.o build/kernel/components/drivers/rtc/rtc.o **-lc -lm**
arm-none-eabi-objcopy -O binary rtthread.elf rtthread.bin
arm-none-eabi-size rtthread.elf
   text    data     bss     dec     hex filename
 569052    2084   85588  656724   a0554 rtthread.elf
scons: done building targets.

比如这个例子，它最后一步就是链接了c库和m库（数学库），
你可以看下你的链接了哪些库。

xianting77 2021-09-18

Whatever brings you down, will eventlly make you stronger!

xianting77 2021-09-18

Whatever brings you down, will eventlly make you stronger!

如上错误是编译完整版rtthread出现的，不知道是CH32V103的64Kflash空间或者20KRAM不足导致的，还是有文件没有包含导致的。
把finsh组件exclude后就编译成功了

我看text到65124了差不多64.59K了，这还是去掉了finsh组件后的情况。
如果想用finsh，有不超齿64K的编译结果，大家建议如何优化还是放弃吧完整版不合适在103上应用？

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2 个回答

bernard 2021-09-16

这家伙很懒，什么也没写！

这个是生成Makefile，所以并不会去build。
make出错是因为生成的Makefile中，不知道pin.c文件在哪里。
错误已经很明显，链接错误，这个时候需要看你的配置，你的BSP。

xianting77 2021-09-16

Whatever brings you down, will eventlly make you stronger!

喔，对。我想起来了，我还没有包含component目录。在rtconfig.py添加后我再试试。谢谢你。

xianting77 2021-09-18

Whatever brings you down, will eventlly make you stronger!

你好，最后再请教下，我想同时生成bin文件和hex文件

以下脚本说有问题，暂不清楚是哪里编辑出错了？
POST_ACTION = OBJCPY + ‘ -O binary $TARGET ‘ + TARGET_NAME
POST_ACTION += OBJCPY + ‘ -O ihex $TARGET’ + TARGET_HEX
POST_ACTION += SIZE + ‘ $TARGET\n’

![image.png](https://oss-club.rt-thread.org/uploads/20210918/4ef7e3f16813b554935053eba3ec963a.png)

xianting77 2021-09-18

Whatever brings you down, will eventlly make you stronger!

chenyingchun 2021-09-22

这家伙很懒，什么也没写！

@xianting77 @xianting77 Hi, 我看我这边的PAST_ACTION中有一个换行符号，你可以试试

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scons make 编译失败，求原因

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