使用libtool e gdb [英] using libtool e gdb

问题描述

我正在开发一个使用GNU autotools的项目，因此为了使用gdb调试代码，我正在libtool中运行gdb:

libtool --mode=execute gdbtui foobar

是否可以重新加载项目的修改版本而不必退出gdb/libtool并重新启动呢?

解决方案

libtool --mode=execute创建一个临时可执行文件，该文件将传递给gdb.重建时将删除此可执行文件.诀窍是用类似的东西重新创建它

libtool --mode=execute echo ./hello

(Libtool将重新创建临时可执行文件，并将其名称传递给echo命令.您可以使用任何其他命令代替echo，例如true来抑制输出，甚至禁止使用不存在的命令.)

要重新加载可执行文件，请使用gdb file filename 命令文件.可执行的真实名称在启动时由gdb显示:

$ libtool --mode=execute gdb --args ./hello
...
Reading symbols from /path/to/.libs/lt-hello...done.
(gdb)

它也由gdb显示 info inferiors 命令:

(gdb) info inferiors 
  Num  Description       Executable        
* 1    <null>            /path/to/.libs/lt-hello

，当然也可以通过上面的echo命令.

I'm working on a project that uses GNU autotools, so in order to debug the code using gdb, I'm running gdb from within libtool:

libtool --mode=execute gdbtui foobar

Is it possible to reload a modified version of the project without the annoyance of having to quit gdb/libtool and restart?

解决方案

libtool --mode=execute creates a temporary executable which is passed to gdb. This executable is removed upon rebuild. The trick is to recreate it with something like

libtool --mode=execute echo ./hello

(Libtool will recreate the temporary executable and pass its name to echo command. You can use any other command instead of echo, e.g. true to suppress output, or even non-existing one.)

To reload the executable use gdb filefilename command file. Executable real name is displayed by gdb upon start:

$ libtool --mode=execute gdb --args ./hello
...
Reading symbols from /path/to/.libs/lt-hello...done.
(gdb)

It is also displayed by gdb info inferiors command:

(gdb) info inferiors 
  Num  Description       Executable        
* 1    <null>            /path/to/.libs/lt-hello

and, of course, by the above echo command.

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