2 dnl Copyright 2005 Free Software Foundation, Inc.
4 dnl This file is part of GNU Radio
6 dnl GNU Radio is free software; you can redistribute it and/or modify
7 dnl it under the terms of the GNU General Public License as published by
8 dnl the Free Software Foundation; either version 2, or (at your option)
11 dnl GNU Radio is distributed in the hope that it will be useful,
12 dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
13 dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 dnl GNU General Public License for more details.
16 dnl You should have received a copy of the GNU General Public License
17 dnl along with GNU Radio; see the file COPYING. If not, write to
18 dnl the Free Software Foundation, Inc., 51 Franklin Street,
19 dnl Boston, MA 02110-1301, USA.
24 # Detemine whether we need to use the -no-undefined linker flag
25 # when building shared libraries.
26 # Sets NO_UNDEFINED to "" or "-no-undefined"
28 # As far as I can tell, we need -no-undefined only when building
29 # windows DLLs. This occurs when using MinGW and Cygwin.
31 # For now, we stub this out.
33 AC_DEFUN([GR_NO_UNDEFINED],[
34 AC_REQUIRE([AC_CANONICAL_HOST])
39 # on MinGW/Cygwin extra LDFLAGS are required
40 no_undefined="-no-undefined"
43 AC_SUBST(NO_UNDEFINED,[$no_undefined])