c - OpenWrt 的 Eclipse GCC C 交叉编译不工作

Question

我是 linux 和 openwrt 的初学者。对不起，如果这是一个愚蠢的问题。

我正在学习本教程:https://downloads.openwrt.org/docs/eclipse.pdf

• 芯片:MT7620
• 工具链前缀:mipsel-openwrt-linux-
• 工具链路径:/ligo/openwrt/staging_dir/toolchain-mipsel_24kec+dsp_gcc-5.3.0_musl-1.1.14

代码:

#include <stdio.h>
void main()
{
    printf("Hello World");
}

错误:

**** Build of configuration Debug for project hello ****
make all 
Building target: hello
Invoking: Cross GCC Linker
mipsel-openwrt-linux-gcc -L/ligo/openwrt/staging_dir/toolchain-mipsel_24kec+dsp_gcc-5.3.0_musl-1.1.14/lib -o"hello"  ./main.o   
mipsel-openwrt-linux-gcc: warning: environment variable 'STAGING_DIR' not defined
mipsel-openwrt-linux-gcc: warning: environment variable 'STAGING_DIR' not defined
/ligo/openwrt/staging_dir/toolchain-mipsel_24kec+dsp_gcc-5.3.0_musl-1.1.14/lib/gcc/mipsel-openwrt-linux-musl/5.3.0/../../../../mipsel-openwrt-linux-musl/lib/crt1.o: In function `_start_c':
/ligo/openwrt/build_dir/toolchain-mipsel_24kec+dsp_gcc-5.3.0_musl-1.1.14/musl-1.1.14/crt/crt1.c:17: undefined reference to `main'
/ligo/openwrt/build_dir/toolchain-mipsel_24kec+dsp_gcc-5.3.0_musl-1.1.14/musl-1.1.14/crt/crt1.c:17: undefined reference to `main'
collect2: error: ld returned 1 exit status
make: *** [hello] Error 1

Answer 1

在bashrc末尾添加如下两行

• export PATH=$PATH:~/openwrt/staging_dir/toolchain-mipsel_24kec+dsp_gcc-4.8-linaro_uClibc-0.9.33.2/bin
导出 STAGING_DIR=~/openwrt/staging_dir

• source ~/.bashrc

打开/创建你可以执行的 bashrc

• sudo gedit ~/.bashrc