acinclude.m4

   1 AC_DEFUN([AC_PROG_SWIG],[
   2         AC_PATH_PROG([SWIG],[swig])
   3         if test -z "$SWIG" ; then
   4                 AC_MSG_WARN([cannot find 'swig' program. You should look at http://www.swig.org])
   5                 SWIG='echo "Error: SWIG is not installed. You should look at http://www.swig.org" ; false'
   6         elif test -n "$1" ; then
   7                 AC_MSG_CHECKING([for SWIG version])
   8                 [swig_version=`$SWIG -version 2>&1 | grep 'SWIG Version' | sed 's/.*\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\).*/\1/g'`]
   9                 AC_MSG_RESULT([$swig_version])
  10                 if test -n "$swig_version" ; then
  11                         # Calculate the required version number components
  12                         [required=$1]
  13                         [required_major=`echo $required | sed 's/[^0-9].*//'`]
  14                         if test -z "$required_major" ; then
  15                                 [required_major=0]
  16                         fi
  17                         [required=`echo $required | sed 's/[0-9]*[^0-9]//'`]
  18                         [required_minor=`echo $required | sed 's/[^0-9].*//'`]
  19                         if test -z "$required_minor" ; then
  20                                 [required_minor=0]
  21                         fi
  22                         [required=`echo $required | sed 's/[0-9]*[^0-9]//'`]
  23                         [required_patch=`echo $required | sed 's/[^0-9].*//'`]
  24                         if test -z "$required_patch" ; then
  25                                 [required_patch=0]
  26                         fi
  27                         # Calculate the available version number components
  28                         [available=$swig_version]
  29                         [available_major=`echo $available | sed 's/[^0-9].*//'`]
  30                         if test -z "$available_major" ; then
  31                                 [available_major=0]
  32                         fi
  33                         [available=`echo $available | sed 's/[0-9]*[^0-9]//'`]
  34                         [available_minor=`echo $available | sed 's/[^0-9].*//'`]
  35                         if test -z "$available_minor" ; then
  36                                 [available_minor=0]
  37                         fi
  38                         [available=`echo $available | sed 's/[0-9]*[^0-9]//'`]
  39                         [available_patch=`echo $available | sed 's/[^0-9].*//'`]
  40                         if test -z "$available_patch" ; then
  41                                 [available_patch=0]
  42                         fi
  43                         if test $available_major -ne $required_major \
  44                                 -o $available_minor -ne $required_minor \
  45                                 -o $available_patch -lt $required_patch ; then
  46                                 AC_MSG_WARN([SWIG version >= $1 is required.  You have $swig_version.  You should look at http://www.swig.org])
  47                                 SWIG='echo "Error: SWIG version >= $1 is required.  You have '"$swig_version"'.  You should look at http://www.swig.org" ; false'
  48                         else
  49                                 AC_MSG_NOTICE([SWIG executable is '$SWIG'])
  50                                 SWIG_LIB=`$SWIG -swiglib`
  51                                 AC_MSG_NOTICE([SWIG library directory is '$SWIG_LIB'])
  52                         fi
  53                 else
  54                         AC_MSG_WARN([cannot determine SWIG version])
  55                         SWIG='echo "Error: Cannot determine SWIG version.  You should look at http://www.swig.org" ; false'
  56                 fi
  57         fi
  58         AC_SUBST([SWIG_LIB])
  59 ])
  60
  61 dnl a macro to check for ability to create python extensions
  62 dnl  AM_CHECK_PYTHON_HEADERS([ACTION-IF-POSSIBLE], [ACTION-IF-NOT-POSSIBLE])
  63 dnl function also defines PYTHON_INCLUDES
  64 AC_DEFUN([AM_CHECK_PYTHON_HEADERS],
  65 [AC_REQUIRE([AM_PATH_PYTHON])
  66 AC_MSG_CHECKING(for headers required to compile python extensions)
  67 dnl deduce PYTHON_INCLUDES
  68 py_prefix=`$PYTHON -c "import sys; print sys.prefix"`
  69 py_exec_prefix=`$PYTHON -c "import sys; print sys.exec_prefix"`
  70 PYTHON_INCLUDES="-I${py_prefix}/include/python${PYTHON_VERSION}"
  71 if test "$py_prefix" != "$py_exec_prefix"; then
  72   PYTHON_INCLUDES="$PYTHON_INCLUDES -I${py_exec_prefix}/include/python${PYTHON_VERSION}"
  73 fi
  74 AC_SUBST(PYTHON_INCLUDES)
  75 dnl check if the headers exist:
  76 save_CPPFLAGS="$CPPFLAGS"
  77 CPPFLAGS="$CPPFLAGS $PYTHON_INCLUDES"
  78 AC_TRY_CPP([#include <Python.h>],dnl
  79 [AC_MSG_RESULT(found)
  80 $1],dnl
  81 [AC_MSG_RESULT(not found)
  82 $2])
  83 CPPFLAGS="$save_CPPFLAGS"
  84 ])
  85
  86 dnl AS_AC_EXPAND(VAR, CONFIGURE_VAR)
  87 dnl example
  88 dnl AS_AC_EXPAND(SYSCONFDIR, $sysconfdir)
  89 dnl will set SYSCONFDIR to /usr/local/etc
  90
  91 dnl written by thomas vander stichele
  92
  93 AC_DEFUN([AS_AC_EXPAND],
  94 [
  95   EXP_VAR=[$1]
  96   FROM_VAR=[$2]
  97
  98   dnl first expand prefix and exec_prefix if necessary
  99   prefix_save=$prefix
 100   if test "x$prefix" = "xNONE"; then
 101     prefix=/usr/local
 102   fi
 103   exec_prefix_save=$exec_prefix
 104   if test "x$exec_prefix" = "xNONE"; then
 105     if test "x$prefix_save" = "xNONE"; then
 106       exec_prefix=/usr/local
 107     else
 108       exec_prefix=$prefix
 109     fi
 110   fi
 111
 112   full_var="$FROM_VAR"
 113   dnl loop until it doesn't change anymore
 114   while true; do
 115     new_full_var="`eval echo $full_var`"
 116     if test "x$new_full_var" = "x$full_var"; then break; fi
 117     full_var=$new_full_var
 118   done
 119
 120   dnl clean up
 121   full_var=$new_full_var
 122   [$1]=$full_var
 123   prefix=$prefix_save
 124   exec_prefix=$exec_prefix_save
 125 ])