Module: GRCommons::GRLib

Defined in:
lib/gr_commons/gr_lib.rb

Overview

This module helps GR, GR and GRM to search the shared library.

The order of priority:

  1. RubyInstaller ( for Windows only )

  2. Environment variable GRDIR

  3. pkg-config : github.com/ruby-gnome/pkg-config

The following packages (should) support pkg-config.

Class Method Summary collapse

Class Method Details

.pkg_config_search(lib_name, pkg_name) ⇒ Object

Use pkg-config to search for shared libraries



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# File 'lib/gr_commons/gr_lib.rb', line 76

def pkg_config_search(lib_name, pkg_name)
  PKGConfig.variable(pkg_name, 'sopath')
rescue PackageConfig::NotFoundError => e
  warn "#{e.message} Cannot find #{lib_name}. "
end

.recursive_search(name, base_dir) ⇒ Object

Recursive file search in directories

Parameters:

  • name (String) —

    File to search for

  • base_dir (String) —

    Directory to search



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# File 'lib/gr_commons/gr_lib.rb', line 66

def recursive_search(name, base_dir)
  Dir.chdir(base_dir) do
    paths = Dir["**/#{name}"].sort
    warn "More than one file found: #{paths}" if paths.size > 1
    path = paths.first
    File.expand_path(path) if path
  end
end

.search(lib_names, pkg_name) ⇒ Object

Note:

This method does not detect the Operating System.

Search the shared library.

Parameters:

  • lib_names (Array) —

    The actual file name of the shared library.

  • pkg_name (String) —

    The package name to be used when searching with pkg-configg



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# File 'lib/gr_commons/gr_lib.rb', line 31

def search(lib_names, pkg_name)
  def lib_names.map_find(&block)
    lazy.map(&block).find { |path| path }
  end
  # Windows + RubyInstaller
  if Object.const_defined?(:RubyInstaller)
    dir = ENV['GRDIR'] || [
      RubyInstaller::Runtime.msys2_installation.msys_path,
      RubyInstaller::Runtime.msys2_installation.mingwarch
    ].join(File::ALT_SEPARATOR)
    lib_names.lazy.map do |lib_name|
      recursive_search(lib_name, dir)
    end.find { |i| i }.tap do |path|
      RubyInstaller::Runtime.add_dll_directory(File.dirname(path)) if path
    end
  # ENV['GRDIR'] (Linux, Mac, Windows)
  elsif ENV['GRDIR']
    # Search for XXX.dylib and then XXX.so on macOS
    lib_names.map_find do |lib_name|
      recursive_search(lib_name, ENV['GRDIR'])
    end || lib_names.map_find do |lib_name|
      pkg_config_search(lib_name, pkg_name)
    end
  else
    lib_names.map_find do |lib_name|
      pkg_config_search(lib_name, pkg_name)
    end
  end
end