在Qt Creator 3.4.1下成功建立了Qt c ++项目。但是当我无法启动调试器时。在应用程序中输出输出：
调试开始
调试失败
调试完成
调试器永远不会真正启动。
在终端输出：
QProcess: Destroyed while process ("/usr/local/bin/gdb") is still running.
Unexpected GDB stderr: "Python Exception <type 'exceptions.ImportError'> No module named gdb:
/usr/local/bin/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.
"
Warning: HANDLE RUNCONTROL START FAILED (no active run control)
Warning: State changed from EngineSetupFailed(2) to DebuggerFinished(23) [master] (no active run control)
Warning: (gdb) (no active run control)
Warning: 48^done (no active run control)
Warning: (gdb) (no active run control)
Warning: UNEXPECTED GDB STDERR: Traceback (most recent call last):
File "<string>", line 1, in <module>
File "/opt/Qt5.4.2/Tools/QtCreator/share/qtcreator/debugger/gdbbridge.py", line 20, in <module>
from dumper import *
File "/opt/Qt5.4.2/Tools/QtCreator/share/qtcreator/debugger/dumper.py", line 37, in <module>
import importlib
ImportError: No module named importlib
Traceback (most recent call last):
File "<string>", line 1, in <module>
NameError: name 'theDumper' is not defined
(no active run control)
Unexpected GDB stderr: "Traceback (most recent call last):
File "<string>", line 1, in <module>
File "/opt/Qt5.4.2/Tools/QtCreator/share/qtcreator/debugger/gdbbridge.py", line 20, in <module>
from dumper import *
File "/opt/Qt5.4.2/Tools/QtCreator/share/qtcreator/debugger/dumper.py", line 37, in <module>
import importlib
ImportError: No module named importlib
Traceback (most recent call last):
File "<string>", line 1, in <module>
NameError: name 'theDumper' is not defined
"
Warning: QUIT DEBUGGER REQUESTED IN STATE 23 (no active run control)
更多信息：
gcc used by qt creator : version 5.0.1
gdb used by qt creator : version 7.9
python 2.6.6 installed on my CentOS 6.5 ,and is in PATH .
当我使用源代码安装gdb时，没有附加--with-python选项。我用谷歌搜索发现有人确实使用该选项进行构建，但没有任何反应。
终端中的输出暴露了两个问题：
将ImportError: No module named importlib导致不支持库在Python。因此，请按照@Amartel的说明安装新版本的Python（大于2.7）。但是在我的情况下，需要使用--with-python配置选项来重建gdb，以使gdb使用较新版本的Python。
Python Exception <type 'exceptions.ImportError'> No module named gdb: /usr/local/bin/gdb'在目录中可以得到解决的副本文件：gdb_src_dir/gdb/data-directory/python/gdb对/usr/local/share/gdb。注意：我的gdb安装在下/usr/local/bin。
最后，调试器可以正常运行。
但是，我没有找到问题2的原因。有人可以解释吗？
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我来说两句