c++ - GDB Python 支持，ImportError 没有名为 gdb 的模块

Question

我正在尝试使用 python 支持编译 gdb，以便我可以使用提供的 PrettyPrinters: http://gcc.gnu.org/svn/gcc/trunk/libstdc++-v3/python

我从 ( http://ftp.gnu.org/gnu/gdb/gdb-7.6.1.tar.gz ) 下载了最新的 gdb 源代码并在我的 Centos 6.4 上编译如下: 1. ./configure --with-python 2.制作

我是否需要为 --with-python 提供路径或其他参数以及 python 库或可执行文件的路径？

编译后运行 gdb，我看到这个警告:

Python Exception <type 'exceptions.ImportError'> No module named gdb:
warning:
Could not load the Python gdb module from `/usr/local/share/gdb/python'.
Limited Python support is available from the _gdb module.
Suggest passing --data-directory=/path/to/gdb/data-directory.

异常在这里很明显，我接下来要做的任何事情都会失败，因为它需要 gdb 模块，但我还是试了一下。所以我在 ~/.gdbinit 中添加了以下几行:

import sys 

sys.path.insert(0, '/tmp/pretty/python')
from libstdcxx.v6.printers import register_libstdcxx_printers
register_libstdcxx_printers (None)

现在当我启动 gdb 时，我得到这个错误:

Traceback (most recent call last):
  File "<string>", line 3, in <module>
  File "/tmp/pretty/python/libstdcxx/v6/printers.py", line 18, in <module>
    import gdb
ImportError: No module named gdb
Error while executing Python code.

有人可以帮我解决这个问题吗？

Answer 1

如果有人在试图在 Solus 4.1 中编译 Python 和 GDB 时遇到这篇文章，请阅读我创建的以下设置指南(显然将任何目录名称/树换成你自己的)

像这样设置.profile:

source /usr/share/defaults/etc/profile

# Adding variables to PATH
PATH=$HOME/.local/bin:$PATH;

# Emscripten variables
PATH=$HOME/Applications/emsdk:$PATH;
PATH=$HOME/Applications/emsdk/node/12.18.1_64bit/bin:$PATH;
PATH=$HOME/Applications/emsdk/upstream/emscripten:$PATH; 

# GDB variables


# Python variables

PATH=$HOME/Applications/Python-3.9.1/out/bin:$PATH;
LD_LIBRARY_PATH=$HOME/Applications/Python-3.9.1/out/lib:$LD_LIBRARY_PATH;
alias python=/home/jeremi-solus/Applications/Python-3.9.1/out/bin/python3.9

# GDBM variables


# GEF variables


# Various apps variables
PATH=$HOME/Applications:$PATH;

export PATH
export LD_LIBRARY_PATH


# ... remaining .profile

像这样设置.bashrc

#import profile data if exists  
if [ -f "$HOME/.profile" ]; then
  source "$HOME/.profile"
#else load default profile environment variables
else
  source /usr/share/defaults/etc/profile
fi

# ... remaining .bashrc

编译 Python(debug build + dev(--enable-shared 相当于 python3-dev))(首先创建“out”目录 - 然后从中运行两个命令)

../configure --with-pydebug --with-lto --enable-optimizations --prefix=/home/jeremi-solus/Applications/Python-3.9.1/out --exec-prefix=/home/jeremi-solus/Applications/Python-3.9.1/out --enable-shared

make altinstall

编译完Python，就可以开始编译GDB了。在运行“配置”命令之前设置这些标志(在编译之前)

export CFLAGS="-I/home/jeremi-solus/Applications/Python-3.9.1/out/include/python3.9d -I/home/jeremi-solus/Applications/Python-3.9.1/out/include/python3.9d"
export LDFLAGS="-L/home/jeremi-solus/Applications/Python-3.9.1/out/lib  -lcrypt -lpthread -ldl  -lutil -lm" 
export LIBS="-lcrypt -lpthread -ldl  -lutil -lm"

记下已编译 Python 二进制文件的路径。您需要将此路径传递给 GDB 配置脚本

/home/jeremi-solus/Applications/Python-3.9.1/out/bin/python3.9

像这样运行配置脚本 - 确保在导出早期设置值后不要关闭 bash shell!!此外，确保通过运行 source ~/.bashrc

设置较早的 .profile 变量

./configure --prefix=/home/jeremi-solus/Applications/gdb-10.1/out --exec-prefix=/home/jeremi-solus/Applications/gdb-10.1/out --enable-lto --with-python=/home/jeremi-solus/Applications/Python-3.9.1/out/bin/python3.9

制作 GDB(从 out 目录运行)

make

用这个命令启动GDB

./gdb -data-directory ./data-directory