[pygobject] configure.ac: Remove option to build without libffi

[Simon Feltman <sfeltman src gnome org>]

commit b3b1f38af1ac1bda9d6a3ba50e9b6fa37ae48d96
Author: Simon Feltman <sfeltman src gnome org>
Date:   Mon Mar 17 14:55:52 2014 -0700

    configure.ac: Remove option to build without libffi
    
    We've always had a hard dependency on libffi headers.
    Commit 5798f94b6a727b93 added a direct module dependency on libffi
    instead of indirect via GI. Remove the option to build without libffi.

 configure.ac |   21 +++------------------
 1 files changed, 3 insertions(+), 18 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 1b2c95d..e4536a4 100644
--- a/configure.ac
+++ b/configure.ac
@@ -174,23 +174,9 @@ AC_SUBST([PYTHON_BASENAME])
 AS_AC_EXPAND(DATADIR, $datadir)
 
 dnl libffi
-AC_MSG_CHECKING(for ffi)
-AC_ARG_WITH(ffi,
-  AS_HELP_STRING([--without-ffi],[Disable libffi support]),
-  with_libffi=$withval,
-  with_libffi=auto)
-if test x"$with_libffi" = xno ; then
-  have_libffi=false
-else
-  PKG_CHECK_MODULES(FFI, libffi >= 3.0, have_libffi=yes, have_libffi=no)
-fi
-if test x"$with_libffi" = xyes && test x"$have_libffi" = xno ; then
-  AC_MSG_ERROR([ffi requested, but not found])
-fi
-if test x"$have_libffi" = xyes; then
-  LIBFFI_PC=libffi
-fi
-AM_CONDITIONAL(HAVE_LIBFFI, test "$have_libffi" = "yes")
+PKG_CHECK_MODULES(FFI, libffi >= 3.0)
+LIBFFI_PC=libffi
+
 AC_SUBST(FFI_CFLAGS)
 AC_SUBST(FFI_LIBS)
 AC_SUBST(LIBFFI_PC)
@@ -287,7 +273,6 @@ AC_MSG_RESULT([
        pygobject $VERSION
 
        Using python interpreter:       $PYTHON
-       libffi support:                 $have_libffi
        cairo support:                  $enable_cairo
        thread support:                 $enable_thread
        code coverage support:          $enable_code_coverage