generate_bin_symlink(filename, bindir)
public
Creates the symlinks to run the applications in the gem. Moves the symlink
if the gem being installed has a newer version.
# File lib/rubygems/installer.rb, line 524
def generate_bin_symlink(filename, bindir)
src = File.join gem_dir, spec.bindir, filename
dst = File.join bindir, formatted_program_filename(filename)
if File.exist? dst then
if File.symlink? dst then
link = File.readlink(dst).split File::SEPARATOR
cur_version = Gem::Version.create(link[-3].sub(/^.*-/, ''))
return if spec.version < cur_version
end
File.unlink dst
end
FileUtils.symlink src, dst, :verbose => Gem.configuration.really_verbose
rescue NotImplementedError, SystemCallError
alert_warning "Unable to use symlinks, installing wrapper"
generate_bin_script filename, bindir
end