七、Ubuntu系统上gdb工具编译

野性酷女 2024-04-18 18:14 60阅读 0赞

本文编译的gdb版本为8.3。

一、系统编译环境搭建

编译之前请自行安装gcc等相关编译环境，而且还要安装 texinfo 这个工具，否则会出现如下错误

/home/jack/Downloads/gdb-8.3/missing: 81: /home/jack/Downloads/gdb-8.3/missing: makeinfo: not found
    WARNING: 'makeinfo' is missing on your system.
             You should only need it if you modified a '.texi' file, or
             any other file indirectly affecting the aspect of the manual.
             You might want to install the Texinfo package:
             <http://www.gnu.org/software/texinfo/>
             The spurious makeinfo call might also be the consequence of
             using a buggy 'make' (AIX, DU, IRIX), in which case you might
             want to install GNU make:
             <http://www.gnu.org/software/make/>
    Makefile:486: recipe for target 'gdb.info' failed
    make[5]: *** [gdb.info] Error 127
    make[5]: Leaving directory '/home/jack/Downloads/gdb-8.3/gdb/doc'
    Makefile:1994: recipe for target 'subdir_do' failed
    make[4]: *** [subdir_do] Error 1
    make[4]: Leaving directory '/home/jack/Downloads/gdb-8.3/gdb'
    Makefile:1752: recipe for target 'install-only' failed
    make[3]: *** [install-only] Error 2
    make[3]: Leaving directory '/home/jack/Downloads/gdb-8.3/gdb'
    Makefile:1749: recipe for target 'install' failed
    make[2]: *** [install] Error 2
    make[2]: Leaving directory '/home/jack/Downloads/gdb-8.3/gdb'
    Makefile:9155: recipe for target 'install-gdb' failed
    make[1]: *** [install-gdb] Error 2
    make[1]: Leaving directory '/home/jack/Downloads/gdb-8.3'
    Makefile:2222: recipe for target 'install' failed
    make: *** [install] Error 2

执行以下命令安装即可

sudo apt-get install texinfo

二、GDB源代码修改

环境安装成功后,将源代码解压出来

tar -zxvf ./gdb-8.3.tar.gz

如果要进行gdb远程调试，则需要对remote.c文件中的代码进行修改。

将

if (buf_len > 2 * rsa->sizeof_g_packet)
    
        error (_("Remote 'g' packet reply is too long (expected %ld bytes, got %d "
    	     "bytes): %s"),
    	   rsa->sizeof_g_packet, buf_len / 2,
    	   rs->buf.data ());

修改为

#if 0
      if (buf_len > 2 * rsa->sizeof_g_packet)
    
        error (_("Remote 'g' packet reply is too long (expected %ld bytes, got %d "
    	     "bytes): %s"),
    	   rsa->sizeof_g_packet, buf_len / 2,
    	   rs->buf.data ());
    #else
     if (buf_len > 2 * rsa->sizeof_g_packet) {
        rsa->sizeof_g_packet = buf_len;
        for (i = 0; i < gdbarch_num_regs(gdbarch); i++) {
            if (rsa->regs[i].pnum == -1)    
                continue;
            if (rsa->regs[i].offset >= rsa->sizeof_g_packet)
                rsa->regs[i].in_g_packet = 0;
            else
                rsa->regs[i].in_g_packet = 1;
        }
      }
    #endif

三、配置脚本及编译安装

执行如下指令

./configure --target=arm-linux --program-prefix=arm-linux- --prefix=`pwd`/output/
    make && make install

如无问题,在gdb的编译目录下面可以看到output文件夹，相关的执行文件在这里面。

四、未解之谜

目前发现如果使用git管理gdb源代码(从gitlab仓库中拉取代码)，然后通过步骤三进行编译，会出现报错，而且这些错误都是随机的。

解决方式，通过解压 gdb-8.3.tar.gz 这个压缩包覆盖仓库代码(被修改过的文件,无需覆盖)，然后重新编译即可。

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