Merge commit 'v3.3.0' into upstream

[debian/gnuradio] / gr-howto-write-a-block / config / gr_fortran.m4

diff --git a/gr-howto-write-a-block/config/gr_fortran.m4 b/gr-howto-write-a-block/config/gr_fortran.m4
new file mode 100644 (file)
index 0000000..033ef03
--- /dev/null
+++ b/gr-howto-write-a-block/config/gr_fortran.m4
@@ -0,0 +1,33 @@
+dnl Copyright 2001,2002,2003,2004,2005,2006 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.
+
+AC_DEFUN([GR_FORTRAN],[
+    dnl if you want to generate a different table of interpolator taps, you need fortran.
+    dnl we default to off, since almost no one wants to do this.
+    AC_ARG_ENABLE(fortran, AC_HELP_STRING([--enable-fortran],[enable fortran (no)]),
+                 [], [enable_fortran=no])
+    AM_CONDITIONAL(ENABLE_FORTRAN, test "x$enable_fortran" = xyes)
+
+    if test "x$enable_fortran" = xyes
+    then
+        AC_PROG_F77
+        AC_F77_LIBRARY_LDFLAGS
+    fi
+    AC_PROG_CC dnl bug fix to restore $ac_ext
+])