如何配置xtensa-lx106-亲自使用非for sdk为esp8266编译esp8266代码？

Question

我很难用xtensa-lx106编译c++代码。

我正在使用的芯片的制造(esp8266)提供了sdk (非of )。这个sdk中的一个库实现了在芯片中分配内存的函数: os_malloc、os_realloc等。

在编译c++代码时，一切正常。在编译c++时，可以成功地生成对象文件，但是我从链接器中得到了很多错误消息，抱怨对中止、空闲、malloc和对__gxx_personality_v0的引用都是未定义的。

我的make文件是使用cmake创建的。下面是我在编译器中使用的选项。

target_include_directories( 
  ${elf_file}

  PUBLIC
  src/
  inc/
  /opt/esp-open-sdk/sdk/driver_lib/include/
  /opt/esp-open-sdk/sdk/include/
  )

target_compile_options(
  ${elf_file}

  PUBLIC
  -mlongcalls -c -std=c++11 -v
  )

target_link_libraries( 
  ${elf_file}

  PUBLIC

  -L/opt/esp-open-sdk/sdk/lib
  -L/opt/esp-open-sdk/sdk/ld
  -Teagle.app.v6.ld

  -nostdlib

  -Wl,--start-group
    -lmain -lhal -lnet80211 -lcrypto -lupgrade -lwpa -llwip -lpp -lphy -v
  -Wl,--end-group

  -ldriver
  -lcirom
  -lgcc
  )

编译器错误：

CMakeFiles/MasterSPI-esp8266.elf.dir/src/main.cpp.o:(.eh_frame+0x12): undefined reference to `__gxx_personality_v0'
CMakeFiles/MasterSPI-esp8266.elf.dir/src/spi.cpp.o:(.eh_frame+0x12): undefined reference to `__gxx_personality_v0'
/opt/esp-open-sdk/sdk/lib/libgcc.a(unwind-dw2.o):(.literal+0x8): undefined reference to `abort'
/opt/esp-open-sdk/sdk/lib/libgcc.a(unwind-dw2.o): In function `execute_cfa_program':
/home/wjg/Repo/esp-open-sdk-20170622/crosstool-NG/.build/src/gcc-4.8.5/libgcc/unwind-dw2.c:1212: undefined reference to `abort'
/opt/esp-open-sdk/sdk/lib/libgcc.a(unwind-dw2.o): In function `read_encoded_value_with_base':
/home/wjg/Repo/esp-open-sdk-20170622/crosstool-NG/.build/src/gcc-4.8.5/libgcc/unwind-pe.h:252: undefined reference to `abort'
/opt/esp-open-sdk/sdk/lib/libgcc.a(unwind-dw2.o): In function `execute_stack_op':
/home/wjg/Repo/esp-open-sdk-20170622/crosstool-NG/.build/src/gcc-4.8.5/libgcc/unwind-dw2.c:905: undefined reference to `abort'
/opt/esp-open-sdk/sdk/lib/libgcc.a(unwind-dw2.o): In function `uw_update_context_1':
/home/wjg/Repo/esp-open-sdk-20170622/crosstool-NG/.build/src/gcc-4.8.5/libgcc/unwind-dw2.c:1420: undefined reference to `abort'
/opt/esp-open-sdk/sdk/lib/libgcc.a(unwind-dw2.o):/home/wjg/Repo/esp-open-sdk-20170622/crosstool-NG/.build/src/gcc-4.8.5/libgcc/unwind-dw2.c:1560: more undefined references to `abort' follow
/opt/esp-open-sdk/sdk/lib/libgcc.a(unwind-dw2-fde.o):(.literal+0x20): undefined reference to `malloc'
/opt/esp-open-sdk/sdk/lib/libgcc.a(unwind-dw2-fde.o):(.literal+0x24): undefined reference to `free'
/opt/esp-open-sdk/sdk/lib/libgcc.a(unwind-dw2-fde.o): In function `size_of_encoded_value':
/home/wjg/Repo/esp-open-sdk-20170622/crosstool-NG/.build/src/gcc-4.8.5/libgcc/unwind-pe.h:88: undefined reference to `abort'
/opt/esp-open-sdk/sdk/lib/libgcc.a(unwind-dw2-fde.o): In function `read_encoded_value_with_base':
/home/wjg/Repo/esp-open-sdk-20170622/crosstool-NG/.build/src/gcc-4.8.5/libgcc/unwind-pe.h:257: undefined reference to `abort'
/opt/esp-open-sdk/sdk/lib/libgcc.a(unwind-dw2-fde.o): In function `base_from_object':
/home/wjg/Repo/esp-open-sdk-20170622/crosstool-NG/.build/src/gcc-4.8.5/libgcc/unwind-dw2-fde.c:256: undefined reference to `abort'
/opt/esp-open-sdk/sdk/lib/libgcc.a(unwind-dw2-fde.o): In function `start_fde_sort':
/home/wjg/Repo/esp-open-sdk-20170622/crosstool-NG/.build/src/gcc-4.8.5/libgcc/unwind-dw2-fde.c:409: undefined reference to `malloc'
/home/wjg/Repo/esp-open-sdk-20170622/crosstool-NG/.build/src/gcc-4.8.5/libgcc/unwind-dw2-fde.c:412: undefined reference to `malloc'
/opt/esp-open-sdk/sdk/lib/libgcc.a(unwind-dw2-fde.o): In function `end_fde_sort':
/home/wjg/Repo/esp-open-sdk-20170622/crosstool-NG/.build/src/gcc-4.8.5/libgcc/unwind-dw2-fde.c:575: undefined reference to `abort'
/home/wjg/Repo/esp-open-sdk-20170622/crosstool-NG/.build/src/gcc-4.8.5/libgcc/unwind-dw2-fde.c:590: undefined reference to `free'
/opt/esp-open-sdk/sdk/lib/libgcc.a(unwind-dw2-fde.o): In function `__register_frame':
/home/wjg/Repo/esp-open-sdk-20170622/crosstool-NG/.build/src/gcc-4.8.5/libgcc/unwind-dw2-fde.c:118: undefined reference to `malloc'
/opt/esp-open-sdk/sdk/lib/libgcc.a(unwind-dw2-fde.o): In function `__register_frame_table':
/home/wjg/Repo/esp-open-sdk-20170622/crosstool-NG/.build/src/gcc-4.8.5/libgcc/unwind-dw2-fde.c:156: undefined reference to `malloc'
/opt/esp-open-sdk/sdk/lib/libgcc.a(unwind-dw2-fde.o): In function `__deregister_frame_info_bases':
/home/wjg/Repo/esp-open-sdk-20170622/crosstool-NG/.build/src/gcc-4.8.5/libgcc/unwind-dw2-fde.c:200: undefined reference to `free'
/home/wjg/Repo/esp-open-sdk-20170622/crosstool-NG/.build/src/gcc-4.8.5/libgcc/unwind-dw2-fde.c:216: undefined reference to `abort'
/opt/esp-open-sdk/sdk/lib/libgcc.a(unwind-dw2-fde.o): In function `__deregister_frame':
/home/wjg/Repo/esp-open-sdk-20170622/crosstool-NG/.build/src/gcc-4.8.5/libgcc/unwind-dw2-fde.c:231: undefined reference to `free'

吸引我注意的是，链接器似乎试图在路径中找到许多文件："/home/wjg/Repo/“，我可以确认它在我的计算机中不存在。无法理解这种行为。

工具信息：

OS：Ubuntu16.04LTS

Compiler：xtensa-lx106-elf-g++ (交叉席-ng-1.22.0-60-g37b07f6) 4.8.5

cmake ：cmake版本3.12.0-rc3

nonos-sdk：2.2.1

Answer 1

也许你忘了链接到C++库了？以下是我在链接C++文件时在ESP8266上使用的库：

-lhal -lphy -lpp -lnet80211 -llwip2 -lwpa -lcrypto -lmain -lwps \
-laxtls -lespnow -lsmartconfig -lairkiss -lwpa2 -lstdc++ -lm -lc -lgcc

特别是-lstdc++是重要的！尝试将这些库添加到makefile中！