我很难用xtensa-lx106-elf编译c ++代码。
我正在使用的芯片(esp8266)的制造商提供一个sdk(nonos-sdk)。 该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。
编译 c 代码时,一切正常。编译 c ++ 时,成功生成了目标文件,但是从链接器中收到很多错误消息,抱怨未定义的对 abort , free 的引用。 , malloc 和 __ gxx_personality_v0 的一个非常奇怪的人。
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'
引起我注意的是,链接器似乎正在尝试在路径中找到许多文件:“ / home / wjg / Repo / ”,并且我可以确认它在以下目录中不存在我的电脑。无法理解这种行为。
工具信息:
操作系统:Ubuntu 16.04LTS
编译器:xtensa-lx106-elf-g ++(crosstool-NG crosstool-ng-1.22.0-60-g37b07f6)4.8.5
CMake :cmake版本3.12.0-rc3
nonos-sdk :2.2.1
答案 0 :(得分:0)
也许您忘了链接C ++库了?这些是我在ESP8266上链接我的C ++文件时使用的库:
-lhal -lphy -lpp -lnet80211 -llwip2 -lwpa -lcrypto -lmain -lwps \
-laxtls -lespnow -lsmartconfig -lairkiss -lwpa2 -lstdc++ -lm -lc -lgcc
尤其是-lstdc ++很重要!尝试将这些库添加到您的makefile中!