uhd

dnl

dnl Copyright 2005 Free Software Foundation, Inc.

dnl 

dnl This file is part of GNU Radio

dnl 

dnl GNU Radio is free software; you can redistribute it and/or modify

dnl it under the terms of the GNU General Public License as published by

dnl the Free Software Foundation; either version 3, or (at your option)

dnl any later version.

dnl 

dnl GNU Radio is distributed in the hope that it will be useful,

dnl but WITHOUT ANY WARRANTY; without even the implied warranty of

dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

dnl GNU General Public License for more details.

dnl 

dnl You should have received a copy of the GNU General Public License

dnl along with GNU Radio; see the file COPYING.  If not, write to

dnl the Free Software Foundation, Inc., 51 Franklin Street,

dnl Boston, MA 02110-1301, USA.

dnl 

# GR_NO_UNDEFINED()

#

# Detemine whether we need to use the -no-undefined linker flag

# when building shared libraries.  

# Sets NO_UNDEFINED to "" or "-no-undefined"

# 

# As far as I can tell, we need -no-undefined only when building

# windows DLLs.  This occurs when using MinGW and Cygwin.

#

# For now, we stub this out.

AC_DEFUN([GR_NO_UNDEFINED],[

	AC_REQUIRE([AC_CANONICAL_HOST])

	no_undefined=""

	case "${host_os}" in

		*mingw* | *cygwin*)

		# on MinGW/Cygwin extra LDFLAGS are required

		no_undefined="-no-undefined"

		;;

	esac

	AC_SUBST(NO_UNDEFINED,[$no_undefined])

])