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Diffstat (limited to 'volk/config/gr_no_undefined.m4')
| -rw-r--r-- | volk/config/gr_no_undefined.m4 | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/volk/config/gr_no_undefined.m4 b/volk/config/gr_no_undefined.m4 new file mode 100644 index 000000000..c8d745d5f --- /dev/null +++ b/volk/config/gr_no_undefined.m4 @@ -0,0 +1,44 @@ +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]) +]) |