Merge branch 'dfsg-orig'

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

diff --git a/gr-howto-write-a-block/config/gr_swig.m4 b/gr-howto-write-a-block/config/gr_swig.m4
new file mode 100644 (file)
index 0000000..cdb2805
--- /dev/null
+++ b/gr-howto-write-a-block/config/gr_swig.m4
@@ -0,0 +1,85 @@
+dnl
+dnl Copyright 2003 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 
+
+# SWIG_PROG([required-version])
+#
+# Checks for the SWIG program.  If found you can (and should) call SWIG via $(SWIG).
+# You can use the optional first argument to check if the version of the available SWIG
+# is greater or equal to the value of the argument.  It should have the format:
+# N[.N[.N]] (N is a number between 0 and 999.  Only the first N is mandatory.)
+AC_DEFUN([SWIG_PROG],[
+       AC_REQUIRE([AC_PROG_MAKE_SET])
+       AC_CHECK_PROG(SWIG,swig,[`which swig`])
+       if test -z "$SWIG" ; then
+               AC_MSG_ERROR([Cannot find 'swig' program.  SWIG version >= $1 required])
+               SWIG=false
+       elif test -n "$1" ; then
+               AC_MSG_CHECKING([for SWIG version])
+               swig_version=`$SWIG -version 2>&1 | \
+                       awk '/^SWIG Version [[0-9]+\.[0-9]+\.[0-9]]+.*$/ { split($[3],a,"[[^.0-9]]"); print a[[1]] }'`
+               AC_MSG_RESULT([$swig_version])
+               if test -n "$swig_version" ; then
+                       swig_version=`echo $swig_version | \
+                               awk '{ split($[1],a,"\."); print [a[1]*1000000+a[2]*1000+a[3]] }' 2>/dev/null`
+                       swig_required_version=`echo $1 | \
+                               awk '{ split($[1],a,"\."); print [a[1]*1000000+a[2]*1000+a[3]] }' 2>/dev/null`
+                       if test $swig_required_version -gt $swig_version ; then
+                               AC_MSG_ERROR([SWIG version >= $1 required])
+                       fi
+               else
+                       AC_MSG_ERROR([cannot determine SWIG version])
+               fi
+       fi
+])
+
+# SWIG_ENABLE_CXX()
+#
+# Enable swig C++ support.  This effects all invocations of $(SWIG).
+AC_DEFUN([SWIG_ENABLE_CXX],[
+       AC_REQUIRE([SWIG_PROG])
+       AC_REQUIRE([AC_PROG_CXX])
+       if test "$SWIG" != "false" ; then
+               SWIG="$SWIG -c++"
+       fi
+])
+
+# SWIG_PYTHON([use-shadow-classes])
+#
+# Checks for Python and provides the $(SWIG_PYTHON_CPPFLAGS),
+# $(SWIG_PYTHON_LIB) and $(SWIG_PYTHON_OPT) output variables.
+# $(SWIG_PYTHON_OPT) contains all necessary swig options to generate
+# code for Python.  If you need multi module support use
+# $(SWIG_PYTHON_LIB) (provided by the SWIG_MULTI_MODULE_SUPPORT()
+# macro) to link against the appropriate library.  It contains the
+# SWIG Python runtime library that is needed by the type check system
+# for example.
+
+AC_DEFUN([SWIG_PYTHON],[
+       AC_REQUIRE([SWIG_PROG])
+       AC_REQUIRE([PYTHON_DEVEL])
+       if test "$SWIG" != "false" ; then
+               AC_SUBST(SWIG_PYTHON_LIB,[-lswigpy])
+dnl            test ! "x$1" = "xno" && swig_shadow=" -shadow" || swig_shadow=""
+dnl            AC_SUBST(SWIG_PYTHON_OPT,[-python$swig_shadow])
+               AC_SUBST(SWIG_PYTHON_OPT,[-python])
+       fi
+       AC_SUBST(SWIG_PYTHON_CPPFLAGS,[$PYTHON_CPPFLAGS])
+])