find_lib

 my(@libs) = find_lib(%args);

This will return a list of dynamic libraries, or empty list if none were found.

[version 0.05]

If called in scalar context it will return the first library found.

Arguments are key value pairs with these keys:

lib

Must be either a string with the name of a single library or a reference to an array of strings of library names. Depending on your platform, "CheckLib" will prepend "lib" or append ".dll" or ".so" when searching.

[version 0.11]

As a special case, if "*" is specified then any libs found will match.

libpath

A string or array of additional paths to search for libraries.

systempath

[version 0.11]

A string or array of system paths to search for instead of letting FFI::CheckLib determine the system path. You can set this to "[]" in order to not search any system paths.

symbol

A string or a list of symbol names that must be found.

verify

A code reference used to verify a library really is the one that you want. It should take two arguments, which is the name of the library and the full path to the library pathname. It should return true if it is acceptable, and false otherwise. You can use this in conjunction with FFI::Platypus to determine if it is going to meet your needs. Example:

 use FFI::CheckLib;
 use FFI::Platypus;
 
 my($lib) = find_lib(
   lib => 'foo',
   verify => sub {
     my($name, $libpath) = @_;
     
     my $ffi = FFI::Platypus->new;
     $ffi->lib($libpath);
     
     my $f = $ffi->function('foo_version', [] => 'int');
     
     return $f->call() >= 500; # we accept version 500 or better
   },
 );
    

recursive

[version 0.11]

Recursively search for libraries in any non-system paths (those provided via "libpath" above).

assert_lib

 assert_lib(%args);

This behaves exactly the same as find_lib, except that instead of returning empty list of failure it throws an exception.

check_lib_or_exit

 check_lib_or_exit(%args);

This behaves exactly the same as assert_lib, except that instead of dying, it warns (with exactly the same error message) and exists. This is intended for use in "Makefile.PL" or "Build.PL"

find_lib_or_exit

[version 0.05]

 my(@libs) = find_lib_or_exit(%args);

This behaves exactly the same as find_lib, except that if the library is not found, it will call exit with an appropriate diagnostic.

find_lib_or_die

[version 0.06]

 my(@libs) = find_lib_or_die(%args);

This behaves exactly the same as find_lib, except that if the library is not found, it will die with an appropriate diagnostic.

check_lib

 my $bool = check_lib(%args);

This behaves exactly the same as find_lib, except that it returns true (1) on finding the appropriate libraries or false (0) otherwise.

which

[version 0.17]

 my $path = where($name);

Return the path to the first library that matches the given name.

Not exported by default.

where

[version 0.17]

 my @paths = where($name);

Return the paths to all the libraries that match the given name.

Not exported by default.

has_symbols

[version 0.17]

 my $bool = has_symbols($path, @symbol_names);

Returns true if all of the symbols can be found in the dynamic library located at the given path. Can be useful in conjunction with "verify" with "find_lib" above.

Not exported by default.

system_path

[version 0.20]

 my $path = FFI::CheckLib::system_path;

Returns the system path as a list reference. On some systems, this is "PATH" on others it might be LD_LIBRARY_PATH on still others it could be something completely different. So although you may add items to this list, you should probably do some careful consideration before you do so.

This function is not exportable, even on request.