Method: MakeMakefile#find_library

Defined in:
lib/mkmf.rb

#find_library(lib, func, *paths, &b) ⇒ Object

Returns whether or not the entry point func can be found within the library lib in one of the paths specified, where paths is an array of strings. If func is nil , then the main() function is used as the entry point.

If lib is found, then the path it was found on is added to the list of library paths searched and linked against.



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# File 'lib/mkmf.rb', line 1165

def find_library(lib, func, *paths, &b)
  dir_config(lib)
  lib = with_config(lib+'lib', lib)
  paths = paths.flat_map {|path| path.split(File::PATH_SEPARATOR)}
  checking_for checking_message(func && func.funcall_style, LIBARG%lib) do
    libpath = $LIBPATH
    libs = append_library($libs, lib)
    begin
      until r = try_func(func, libs, &b) or paths.empty?
        $LIBPATH = libpath | [paths.shift]
      end
      if r
        $libs = libs
        libpath = nil
      end
    ensure
      $LIBPATH = libpath if libpath
    end
    r
  end
end