vtysh的移植

配置交叉编译链的环境变量

source /opt/fsl-networking/QorIQ-SDK-V1.8/environment-setup-ppce500v2-fsl-linux-gnuspe

替换vtysh工程中的CC变量

vi Makefile

注释掉CC变量

编译

err1：

vtysh.c:37:31: fatal error: readline/readline.h: No such file or directory

需要libreaadline库

交叉编译libreadline

1. 下载解压源码

2. ./configure --prefix=/opt/fsl-networking/QorIQ-SDK-V1.8/sysroots/ppce500v2-fsl-linux-gnuspe/usr

   err2:

   configure: loading site script /opt/fsl-networking/QorIQ-SDK-V1.8/site-config-ppce500v2-fsl-linux-gnuspe
   checking build system type... i686-pc-linux-gnu
   checking host system type... i686-pc-linux-gnu
   
   Beginning configuration for readline-6.0 for i686-pc-linux-gnu
   
   checking whether make sets $(MAKE)... yes
   checking for gcc... powerpc-fsl-linux-gnuspe-gcc  -m32 -mcpu=8548 -mabi=spe -mspe -mfloat-gprs=double --sysroot=/opt/fsl-networking/QorIQ-SDK-V1.8/sysroots/ppce500v2-fsl-linux-gnuspe
   checking for C compiler default output file name... 
   configure: error: in `/home/freescale/work/readline-6.0':
   configure: error: C compiler cannot create executables
   See `config.log' for more details.
   

   查看config.log后发现是–hash-style=gnu的问题，查找–hash-style=gnu的位置，发现在/opt/fsl-networking/QorIQ-SDK-V1.8/environment-setup-ppce500v2-fsl-linux-gnuspe中export LDFLAGS="--hash-style=gnu -Wl,--as-needed"，所以执行

   unset LDFLAGS。

   类似的问题在编译kernel时遇到过，报错不一样，但是当时百度解决了问题，并没有发现问题的本质。所以我们发现问题和解决问题时，要知道为什么会有问题，掌握解决问题的方法，否则下次出现问题时，依旧不会解决，而且还会花费大量的时间来解决相同的问题。

   err3:

   checking for C compiler default output file name... a.out
   checking whether the C compiler works... configure: error: in `/home/freescale/work/readline-6.0':
   configure: error: cannot run C compiled programs.
   If you meant to cross compile, use `--host'.
   See `config.log' for more details.
   

   ./configure --host=powerpc-fsl-linux-gnuspe --prefix=/opt/fsl-networking/QorIQ-SDK-V1.8/sysroots/ppce500v2-fsl-linux-gnuspe/usr

3. make

4. make install

继续编译vtysh

1. make

   err4:

   In file included from /opt/fsl-networking/QorIQ-SDK-V1.8/sysroots/ppce500v2-fsl-linux-gnuspe/usr/include/readline/readline.h:35:0,
                    from vtysh_main.c:27:
   /opt/fsl-networking/QorIQ-SDK-V1.8/sysroots/ppce500v2-fsl-linux-gnuspe/usr/include/readline/rltypedefs.h:64:28: error: unknown type name 'FILE'
    typedef int rl_getc_func_t PARAMS((FILE *));
                               ^
   /opt/fsl-networking/QorIQ-SDK-V1.8/sysroots/ppce500v2-fsl-linux-gnuspe/usr/include/readline/readline.h:416:20: error: unknown type name 'FILE'
    extern int rl_getc PARAMS((FILE *));
                       ^
   In file included from vtysh_main.c:27:0:
   /opt/fsl-networking/QorIQ-SDK-V1.8/sysroots/ppce500v2-fsl-linux-gnuspe/usr/include/readline/readline.h:539:8: error: unknown type name 'FILE'
    extern FILE *rl_instream;
           ^
   /opt/fsl-networking/QorIQ-SDK-V1.8/sysroots/ppce500v2-fsl-linux-gnuspe/usr/include/readline/readline.h:540:8: error: unknown type name 'FILE'
    extern FILE *rl_outstream;
           ^
   /opt/fsl-networking/QorIQ-SDK-V1.8/sysroots/ppce500v2-fsl-linux-gnuspe/usr/include/readline/readline.h:562:8: error: unknown type name 'rl_getc_func_t'
    extern rl_getc_func_t *rl_getc_function;
           ^
   /opt/fsl-networking/QorIQ-SDK-V1.8/sysroots/ppce500v2-fsl-linux-gnuspe/usr/include/readline/readline.h:844:3: error: unknown type name 'FILE'
      FILE *inf;
      ^
   /opt/fsl-networking/QorIQ-SDK-V1.8/sysroots/ppce500v2-fsl-linux-gnuspe/usr/include/readline/readline.h:845:3: error: unknown type name 'FILE'
      FILE *outf;
   

   这是因为readline.h文件中没有stdio.h头文件包含引起的

   vi /opt/fsl-networking/QorIQ-SDK-V1.8/sysroots/ppce500v2-fsl-linux-gnuspe/usr/include/readline/readline.

   把#include <stdio.h>加进去

   err5:

   /opt/fsl-networking/QorIQ-SDK-V1.8/sysroots/i686-fslsdk-linux/usr/bin/powerpc-fsl-linux-gnuspe/powerpc-fsl-linux-gnuspe-ld: cannot find -lncurses
   collect2: error: ld returned 1 exit status
   make: *** [vtysh] Error 1
   

   安装ncurses，下载源码，执行./configure --host=powerpc-fsl-linux-gnuspe --prefix=/opt/fsl-networking/QorIQ-SDK-V1.8/sysroots/ppce500v2-fsl-linux-gnuspe/usr，然后编译make，安装make install

   err6:

   make[1]: powerpc-fsl-linux-gnuspe-ranlib: Command not found
   make[1]: *** [install] Error 127
   make[1]: Leaving directory `/home/freescale/work/ncurses-6.0/ncurses'
   make: *** [install] Error 2
   

   这是因为$RANLIB环境变量的问题，看来source /opt/fsl-networking/QorIQ-SDK-V1.8/environment-setup-ppce500v2-fsl-linux-gnuspe命令的坑还是挺多的，freescale专门坑小朋友。

   执行RANLIB="powerpc-fsl-linux-gnuspe-ranlib --sysroot=$SDKTARGETSYSROOT",

   make install，ok安装完成。

   发现坑，要填坑，把/opt/fsl-networking/QorIQ-SDK-V1.8/environment-setup-ppce500v2-fsl-linux-gnuspe文件的其他编译链的参数也该一下吧，以后就不会遇到类似问题了。主要给as、ld、ranlib添加就可以。

2. make

3. file vtysh

   [email protected]:~/work/yw1016-vty-20190228$ file vtysh vtysh: ELF 32-bit MSB executable, PowerPC or cisco 4500, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.16, BuildID[sha1]=3234b5a501bfe2c0f0ed057ded813a76b0feaf49, not stripped

   可执行文件时powerpc架构的，编译成功了