Re: Autoconf support suggestion

Hi, 

I'm trying to work out a swig.m4 file myself for my projects, because I'm 
needing to configure/make multiple language modules for a few of my projects. 
(yay swig!).  I've attached my current working copy for this.  Although some of 
this should probably be coordinated somehow with existing macros java for 
example (maybe others?).  It would be good if we could get this in the swig 
project so multiple inputs can be provided for stability and broader support.

-Brian Shire
<shire@xxxxxxxxxx>
http://www.tekrat.com

On Sat, Jan 25, 2003 at 02:22:34PM +0100, Sebastian Huber wrote:
> Hello,
> is it possible to add a few files to the next SWIG release, which may help to 
> improve the usage of SWIG within projects based on Autoconf. In my opinion 
> only two files are needed.
> 
> swig-config.in:
> This file will be installed in the 'bin' directory and provides information 
> about the installed SWIG system, e.g. 'swig-config --version' -> SWIG 
> version.
> 
> swig.m4:
> Developers which use SWIG and Autoconf can use this in their projects.
> 
> The appended files are incomplete.
> 
> Bye
>       Sebastian
> # PYTHON_DEVEL()
> #
> # Checks for Python and tries to get the include path to 'Python.h'.
> # It provides the $(PYTHON_CPPFLAGS) output variable.
> AC_DEFUN([PYTHON_DEVEL],[
>       AC_REQUIRE([AM_PATH_PYTHON])
> 
>       # Check for Python include path
>       AC_MSG_CHECKING([for Python include path])
>       python_path=${PYTHON%/bin*}
>       for i in "$python_path/include/python$PYTHON_VERSION/" 
> "$python_path/include/python/" "$python_path/" ; do
>               python_path=`find $i -type f -name Python.h -print`
>               if test -n "$python_path" ; then
>                       break
>               fi
>       done
>       for i in $python_path ; do
>               python_path=${python_path%/Python.h}
>               break
>       done
>       AC_MSG_RESULT([$python_path])
>       if test -z "$python_path" ; then
>               AC_MSG_ERROR([cannot find Python include path])
>       fi
>       AC_SUBST(PYTHON_CPPFLAGS,[-I$python_path])
> ])
> 
> # SWIG_PROG([required-version])
> #
> # Checks for the SWIG program.  If found you can (and should) call SWIG via 
> $(SWIG).
> # You can use the optional first argument to check if the version of the 
> available SWIG
> # is greater than or equal to the value of the argument.  It should have the 
> format:
> # N[.N[.N]] (N is a number between 0 and 999.  Only the first N is mandatory.)
> AC_DEFUN([SWIG_PROG],[
>       AC_REQUIRE([AC_PROG_MAKE_SET])
>       AC_CHECK_PROG(SWIG,swig,[`which swig`])
>       if test -z "$SWIG" ; then
>               AC_MSG_WARN([cannot find 'swig' program])
>               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_WARN([SWIG version $1 required])
>                       fi
>               else
>                       AC_MSG_WARN([cannot determine SWIG version])
>               fi
>       fi
>       AC_SUBST([SWIG_PYTHON_LIB],[])
> ])
> 
> # 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_MULTI_MODULE_SUPPORT()
> #
> # Enable support for multiple modules.  This effects all invocations of 
> $(SWIG).
> # You have to link all generated modules against the appropriate SWIG library.
> # If you want to build Python modules for example, use the SWIG_PYTHON() macro
> # and link the modules against $(SWIG_PYTHON_LIB).
> AC_DEFUN([SWIG_MULTI_MODULE_SUPPORT],[
>       AC_REQUIRE([SWIG_PROG])
>       if test "$SWIG" != "false" ; then
>               SWIG="$SWIG -c"
>         
>               # Check for SWIG library path
>               AC_MSG_CHECKING([for SWIG library path])
>               swig_path=${SWIG%/bin*}/lib
>               swig_path=`find $swig_path -type f -name libswig*.a -o -name 
> libswig*.so -print`
>               for i in $swig_path ; do
>                       swig_path=${i%/libswig*}
>                       break
>               done
>               AC_MSG_RESULT([$swig_path])
>               if test -n "$swig_path" ; then
>                       SWIG_PYTHON_LIB="$SWIG_PYTHON_LIB -L$swig_path"
>               else
>                       AC_MSG_WARN([cannot find SWIG library path])
>               fi
>       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.  Shadow classes are enabled unless the
> # value of the optional first argument is exactly 'no'.  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
>               SWIG_PYTHON_LIB="$SWIG_PYTHON_LIB -lswigpy"
>       fi
>       test "x$1" != "xno" && swig_shadow=" -shadow"
>       AC_SUBST([SWIG_PYTHON_OPT],[-python$swig_shadow])
>       AC_SUBST([SWIG_PYTHON_CPPFLAGS],[$PYTHON_CPPFLAGS])
> ])



-- 
Brian Shire <shire@xxxxxxxxxx>
Tekrat Labs <http://www.tekrat.com>

swig.m4
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