[ruby-cvs:67363] nobu:r60182 (trunk): configure.ac: link Foundation framework

[nobu at ruby-lang.org]

nobu	2017-10-15 00:55:14 +0900 (Sun, 15 Oct 2017)

  New Revision: 60182

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=60182

  Log:
    configure.ac: link Foundation framework
    
    * configure.ac (XLDFLAGS): link against Foundation framework and
      let __NSPlaceholderDictionary initialize, to get rid of crash
      after fork on macOS High Sierra.  [ruby-core:83239] [Bug #14009]

  Modified files:
    trunk/configure.ac