交叉编译错误“ arm-none-eabi-g ++找不到条目符号”

Question

我有关于交叉编译的问题。

#include <stdio.h>

int main()
{
    printf("hello\n");
    return 0;
}

这是我使用的一个简单的hello world代码。

我正在使用从导师图形下载的arm-none-eabi-g ++。 这是错误。 我不知道会错过什么lib。

/home/kang/Utils/arm-2013.05/bin/../lib/gcc/arm-none-eabi/4.7.3/../../../../arm-none-eabi/bin/ld: warning: cannot find entry symbol _start; defaulting to 00008018
/home/kang/Utils/arm-2013.05/bin/../lib/gcc/arm-none-eabi/4.7.3/../../../../arm-none-eabi/lib/libc.a(lib_a-abort.o): In function `abort':
abort.c:(.text+0x10): undefined reference to `_exit'
/home/kang/Utils/arm-2013.05/bin/../lib/gcc/arm-none-eabi/4.7.3/../../../../arm-none-eabi/lib/libc.a(lib_a-signalr.o): In function `_kill_r':
signalr.c:(.text+0x1c): undefined reference to `_kill'
/home/kang/Utils/arm-2013.05/bin/../lib/gcc/arm-none-eabi/4.7.3/../../../../arm-none-eabi/lib/libc.a(lib_a-signalr.o): In function `_getpid_r':
signalr.c:(.text+0x44): undefined reference to `_getpid'
/home/kang/Utils/arm-2013.05/bin/../lib/gcc/arm-none-eabi/4.7.3/../../../../arm-none-eabi/lib/libc.a(lib_a-sbrkr.o): In function `_sbrk_r':
sbrkr.c:(.text+0x18): undefined reference to `_sbrk'
/home/kang/Utils/arm-2013.05/bin/../lib/gcc/arm-none-eabi/4.7.3/../../../../arm-none-eabi/lib/libc.a(lib_a-writer.o): In function `_write_r':
writer.c:(.text+0x20): undefined reference to `_write'
/home/kang/Utils/arm-2013.05/bin/../lib/gcc/arm-none-eabi/4.7.3/../../../../arm-none-eabi/lib/libc.a(lib_a-closer.o): In function `_close_r':
closer.c:(.text+0x18): undefined reference to `_close'
/home/kang/Utils/arm-2013.05/bin/../lib/gcc/arm-none-eabi/4.7.3/../../../../arm-none-eabi/lib/libc.a(lib_a-fstatr.o): In function `_fstat_r':
fstatr.c:(.text+0x1c): undefined reference to `_fstat'
/home/kang/Utils/arm-2013.05/bin/../lib/gcc/arm-none-eabi/4.7.3/../../../../arm-none-eabi/lib/libc.a(lib_a-isattyr.o): In function `_isatty_r':
isattyr.c:(.text+0x18): undefined reference to `_isatty'
/home/kang/Utils/arm-2013.05/bin/../lib/gcc/arm-none-eabi/4.7.3/../../../../arm-none-eabi/lib/libc.a(lib_a-lseekr.o): In function `_lseek_r':
lseekr.c:(.text+0x20): undefined reference to `_lseek'
/home/kang/Utils/arm-2013.05/bin/../lib/gcc/arm-none-eabi/4.7.3/../../../../arm-none-eabi/lib/libc.a(lib_a-readr.o): In function `_read_r':
readr.c:(.text+0x20): undefined reference to `_read'
collect2: error: ld returned 1 exit status

这是编译器版本。

$ arm-linux-gnueabi-g ++ -v

使用内置规格。 COLLECT_GCC = / home / kang / Utils / arm-2013.05 / bin / arm-none-eabi-g ++ COLLECT_LTO_WRAPPER = / home / kang / Utils / arm-2013.05 / bin /../ libexec / gcc / arm-none-eabi / 4.7.3 / lto-wrapper目标：arm-none-eabi配置为：/scratch/jbrown/2013.05-arm-eabi-release/src/gcc-4.7-2013.05/configure --build = i686-pc-linux-gnu --host = i686-pc-linux-gnu --target = arm-none-eabi --enable-threads --disable-libmudflap --disable-libssp --disable-libstdcxx-pch --enable-extra-sgxxlite- multilibs --with-gnu-as --with-gnu-ld --with-specs ='％{保存温度：-fverbose-asm} -D__CS_SOURCERYGXX_MAJ __ = 2013 -D__CS_SOURCERYGXX_MIN __ = 5 -D__CS_SOURCERYGXX_REV __ = 23％{O2：％ {！fno-remove-local-statics：-fremove-local-statics}}％{O *：％{O | O0 | O1 | O2 | Os：;：％{！fno-remove-local-statics：-fremove -local-statics}}}'---enable-languages = c，c ++ --disable-shared --enable-lto --with-newlib --with-pkgversion ='Sourcery CodeBench Lite 2013.05-23'--with- bugurl = https://sourcery.mentor.com/GNUToolchain/ --disable-nls --prefix = / opt / codesourcery --with-headers =是--wit h-sysroot = / opt / codesourcery / arm-none-eabi --with-build-sysroot = / scratch / jbrown / 2013.05-arm-eabi-release / install / arm-none-eabi --with-gmp = / scratch /jbrown/2013.05-arm-eabi-release/obj/pkg-2013.05-23-arm-none-eabi/arm-2013.05-23-arm-none-eabi.extras/host-libs-i686-pc-linux-gnu / usr --with-mpfr = / scratch / jbrown / 2013.05-arm-eabi-release / obj / pkg-2013.05-23-arm-none-eabi / arm-2013.05-23-arm-none-eabi.extras / host -libs-i686-pc-linux-gnu / usr --with-mpc = / scratch / jbrown / 2013.05-arm-eabi-release / obj / pkg-2013.05-23-arm-none-eabi / arm-2013.05-23 -arm-none-eabi.extras / host-libs-i686-pc-linux-gnu / usr --with-ppl = / scratch / jbrown / 2013.05-arm-eabi-release / obj / pkg-2013.05-23-arm -none-eabi / arm-2013.05-23-arm-none-eabi.extras / host-libs-i686-pc-linux-gnu / usr --with-host-libstdcxx ='-static-libgcc -Wl，-Bstatic ，-lstdc ++，-Bdynamic -lm'--with-cloog = / scratch / jbrown / 2013.05-arm-eabi-release / obj / pkg-2013.05-23-arm-none-eabi / arm-2013.05-23-arm- none-eabi.extras / host-libs-i686-pc-linux-gnu / usr --with-libelf = / scratch / jbrown / 2 013.05-arm-eabi-release / obj / pkg-2013.05-23-arm-none-eabi / arm-2013.05-23-arm-none-eabi.extras / host-libs-i686-pc-linux-gnu / usr- -disable-libgomp --disable-libitm --enable-poison-system-directories --with-build-time-tools = / scratch / jbrown / 2013.05-arm-eabi-release / install / arm / none-eabi / bin --with-build-time-tools = / scratch / jbrown / 2013.05-arm-eabi-release / install / arm-none-eabi / bin线程模型：单个gcc版本4.7.3（Sourcery CodeBench Lite 2013.05-23）

Answer 1

您下载了错误的工具链。

arm-linux-gnueabi-g++是使用arm-none-eabi ，用于裸机程序。 它不包含libc，即该工具链中不存在标准库（glibc或eglibc）。

因此，您需要下载arm-none-linux-gnueabi工具链（即arm-2013.05-24-arm-none-linux-gnueabi-i686-pc-linux-gnu.tar.bz2 ，而不是arm-2013.11-24-arm-none-eabi-i686-pc-linux-gnu.tar.bz2 ）。

要验证以上内容，请输入：

cd /home/kang/Utils/arm-2013.05/arm-none-eabi 

在这里，您只会找到bin include lib share ，没有libc目录。

下载arm-2013.05-24-arm-none-linux-gnueabi-i686-pc-linux-gnu.tar.bz2 ; 在这里您会找到一个文件夹arm-2013.05/arm-none-linux-gnueabi/libc 。

您还可以通过以下方式进行验证：

arm-linux-eabi-g++ -print-sysroot and 
arm-none-linux-gnueabi-g++ -print-sysroot

还请参考前面的问题： 交叉编译时如何使用外部库？

Answer 2

我正在使用arm-linux-gnueabi-g ++。 它下载了表单指导者图形。

这是错误的名称。 您的所有输出都表明Mentor Graphics已打包了 arm-none-gnueabi工具链，并错误地将其命名为 arm-linux-gnueabi （甚至不符合命名约定）。

抱歉，我输入了错误的编译器。 我正在使用arm-none-eabi-g ++

为自己获取arm-none-linux-gnueabi工具链的版本（即，针对GNU / Linux而不是EABI）。

这将包含与Linux操作系统连接的GCC运行时。 您现在所缺少的所有这些功能都是该界面的一部分。