[CMake] Meaning of `*' in find_library()

[Konstantin Tokarev]

14.11.2017, 14:56, "Robin Verschueren" <robin.verschueren at gmail.com>:
> Dear all,
>
> I'm having some troubles using the 'PATHS' argument to find_library. More specifically, I'm trying to find the gfortran libraries (/usr/lib/gcc/x86_64-linux-gnu/5/libgfortran.so on my system).
>
> If I call
>
> find_library(FORTRAN_LIBRARY
>     NAMES gfortran
>     PATHS "/usr/lib/gcc/x86_64-linux-gnu/*")
>
> CMake finds the gfortran libs. However, if I change the last argument to "usr/lib/gcc/*", CMake does not find the specified library and throws an error (if REQUIRED is set).

FWIW shell globs (from which this syntax derives) are not recursive

>
> Why is the extra directory necessary? Does the `*' symbol only look one directory deeper?  How can I traverse folders recursively?
>
> I tried to look for documentation on this, but searches in both Google and the CMake docs did not return anything useful. (looked for find_library, file, glob, etc.)
>
> Best regards,
> Robin
>
> PS if someone knows a better way of finding Fortran libraries, please feel free to enlighten me.

Parse `gcc -print-search-dirs`

>
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-- 
Regards,
Konstantin