How do I prepend a directory the library path when loading a core file in gdb on Linux

Question

I have a core file generated on a remote system that I don\'t have direct access to. I also have local copies of the library files from the remote system, and the executabl

Answer 1

I'm not sure this is possible at all within gdb but then I'm no expert.

However I can comment on the Linux dynamic linker. The following should print the path of all resolved shared libraries and the unresolved ones.

ldd path/to/executable

We need to know how your shared libraries were linked with your executable. To do this, use the following command:

readelf -d path/to/executable | grep RPATH

• Should the command print nothing, the dynamic linker will use standard locations plus the LD_LIBRARY_PATH environment variable to find the shared libraries.

• If the command prints some lines, the dynamic linker will ignore LD_LIBRARY_PATH and use the hardcoded rpaths instead.

  If the listed rpaths are absolute, the only solution I know is to copy (or symlink) your libraries to the listed locations.

  If the listed rpaths are relative, they will contain a $ORIGIN which will be replaced at run time by the path of the executable. Move either the executable or the libraries to match.

For further informations, you could start with:

man ld.so