[Bug binutils/29819] ld testsuite of --version-script relies on -L option

[nickc at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=29819

--- Comment #3 from Nick Clifton <nickc at redhat dot com> ---
(In reply to Martin Liska from comment #2)

> That means my example in comment 0 should fail because 'aaa.map' is in 'aaa'
> folder (sorry for the bad names) as -Laaa should be ignored when
> --version-script=aaa.map is searched. Or do I miss something?

I think that you have missed something.  The command succeeds because the -Laaa
option lets the linker know that is should search for the aaa.map file in the
aaa directory.

Maybe this will help:

  % strace ld [...] -Laaa [...] --version-script=aaa.map >& fred
  % grep openat fred  | grep aaa.map
  openat(AT_FDCWD, "aaa.map", O_RDONLY)   = -1 ENOENT (No such file or
directory)
  openat(AT_FDCWD, "aaa/aaa.map", O_RDONLY) = 3

So the linker tries twice to find the aaa.map file.  Once in the current
directory and then a second time in the aaa/ directory.

The --version-script option tells the linker the name of a version control file
that it should use.  The -L option provides a directory location where the
linker might be able to find the file.

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