#author("2019-10-31T13:33:12+08:00","default:Admin","Admin") OpenWRT

unexpected word (expecting ")") †

[edit]

开发板运行一个简单的helloworld而已，却出现如下错误. unexpected word (expecting ")") 

有以下可能

• 交叉工具链不对
• 编译选项错误：假设工具链是 arm-linux-gcc  编译hello.c arm-linux-gcc hello.c -o hello    把hello 拷贝到你的板子上去 ./hello 试试

ald@ald888:/work/openwrt/trunk/package/sncom/src$ mipsel-openwrt-linux-gcc -c serial.c -o serial
mipsel-openwrt-linux-uclibc-gcc.bin: warning: environment variable 'STAGING_DIR' not defined
ald@ald888:/work/openwrt/trunk/package/sncom/src$ cp serial /mnt/hgfs/share/
ald@ald888:/work/openwrt/trunk/package/sncom/src$ file serial
serial: ELF 32-bit LSB relocatable, MIPS, MIPS-I version 1 (SYSV), with unknown capability 0xf41 = 0x756e6700, with unknown capability 0x70100 = 0x3040000, not stripped

下面是正常的

ald@ald888:/work/openwrt/trunk/package/sncom/src$ mipsel-openwrt-linux-gcc serial.c -o serial
mipsel-openwrt-linux-uclibc-gcc.bin: warning: environment variable 'STAGING_DIR' not defined
mipsel-openwrt-linux-uclibc-gcc.bin: warning: environment variable 'STAGING_DIR' not defined
mipsel-openwrt-linux-uclibc-gcc.bin: warning: environment variable 'STAGING_DIR' not defined
ald@ald888:/work/openwrt/trunk/package/sncom/src$ ls
Makefile  serial  serial.c  serial_pc  snshm
ald@ald888:/work/openwrt/trunk/package/sncom/src$ file serial
serial: ELF 32-bit LSB executable, MIPS, MIPS32 rel2 version 1, dynamically linked (uses shared libs), with unknown capability 0xf41 = 0x756e6700, with unknown capability 0x70100 = 0x3040000, not stripped

ald@ald888:/work/openwrt/trunk/package/sncom/src$ cp serial /mnt/hgfs/share/ald@ald888:/work/openwrt/trunk/package/sncom/src$

make package/mydrv_app/compile V=99

命令生成安装包的路径

/work/openwrt/trunk/build_dir/target-mipsel_24kec+dsp_uClibc-0.9.33.2/snsh/ipkg-ramips_24kec/snsh/usr/sbin

最终生成安装包ipk文件的路径

/work/openwrt/trunk/bin/ramips/packages/base

解决方法

在头部加分号；

/bin/ash ：./helloworld permission denied. †

[edit]

问题：/bin/ash ：./helloworld permission denied.

没有root账户就无法创建文件，如果用root就不许编译

原因：

ls -l helloworld

发现helloworld 根本没有执行权限。

解决方法： 1. arm-linux-gcc helloworld.c -o helloworld 之前是arm-linux-gcc -c helloworld.c -o helloworld
是没有执行权限的。
不加上-c，默认是编译成可执行文件，加上-c是编译为对象文件的。

因为gcc -c是编译为目标文件，-o是指定生成文件的名字。

2. chmod -x helloworld.

connect error: Connection refused †

[edit]

root@OpenWrt:/# snsh
[init] ser2netThread starting...
[socket] ser2netThread starting....
[socket] connect error: Connection refused

ser2net没有启动造成的

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