dnl check to see if SWIG is current enough.dnldnl if it is, then check to see if we have the correct version of python.dnldnl if we do, then set up the appropriate SWIG_ variables to build the dnl python bindings.AC_DEFUN(SVN_CHECK_SWIG,[  AC_ARG_WITH(swig,              AC_HELP_STRING([--with-swig=PATH],                             [Try to use 'PATH/bin/swig' to build the                              swig bindings.  If PATH is not specified,                              look for a 'swig' binary in your PATH.]),  [    case "$withval" in      "no")        SWIG_SUITABLE=no        SVN_FIND_SWIG(no)      ;;      "yes")        SVN_FIND_SWIG(check)      ;;      *)        SVN_FIND_SWIG($withval)      ;;    esac  ],  [    SVN_FIND_SWIG(check)  ])])AC_DEFUN(SVN_FIND_SWIG,[  where=$1  if test $where = no; then    AC_PATH_PROG(SWIG, none, none)  elif test $where = check; then    AC_PATH_PROG(SWIG, swig, none)  else    if test -f "$where"; then      SWIG="$where"    else      SWIG="$where/bin/swig"    fi    if test ! -f "$SWIG" || test ! -x "$SWIG"; then      AC_MSG_ERROR([Could not find swig binary at $SWIG])    fi   fi  if test "$SWIG" != "none"; then    AC_MSG_CHECKING([swig version])    SWIG_VERSION_RAW="`$SWIG -version 2>&1 | \                       sed -ne 's/^.*Version \(.*\)$/\1/p'`"    # We want the version as an integer so we can test against    # which version we're using.  SWIG doesn't provide this    # to us so we have to come up with it on our own.     # The major is passed straight through,    # the minor is zero padded to two places,    # and the patch level is zero padded to three places.    # e.g. 1.3.24 becomes 103024    SWIG_VERSION="`echo \"$SWIG_VERSION_RAW\" | \                  sed -e 's/[[^0-9\.]].*$//' \                      -e 's/\.\([[0-9]]\)$/.0\1/' \                      -e 's/\.\([[0-9]][[0-9]]\)$/.0\1/' \                      -e 's/\.\([[0-9]]\)\./0\1/; s/\.//g;'`"    AC_MSG_RESULT([$SWIG_VERSION_RAW])    # If you change the required swig version number, don't forget to update:    #   subversion/bindings/swig/INSTALL    #   packages/rpm/redhat-8+/subversion.spec    #   packages/rpm/redhat-7.x/subversion.spec    #   packages/rpm/rhel-3/subversion.spec    #   packages/rpm/rhel-4/subversion.spec    if test -n "$SWIG_VERSION" &&       test "$SWIG_VERSION" -ge "103024" &&       test "$SWIG_VERSION" -le "103029"; then      SWIG_SUITABLE=yes    else      SWIG_SUITABLE=no      AC_MSG_WARN([Detected SWIG version $SWIG_VERSION_RAW])      AC_MSG_WARN([Subversion requires 1.3.24 or later, and is known to work])      AC_MSG_WARN([with versions up to 1.3.29])    fi  fi   SWIG_PY_COMPILE="none"  SWIG_PY_LINK="none"  if test "$PYTHON" != "none"; then    AC_MSG_NOTICE([Configuring python swig binding])    AC_CACHE_CHECK([for Python includes], [ac_cv_python_includes],[      ac_cv_python_includes="`$PYTHON ${abs_srcdir}/build/get-py-info.py --includes`"    ])    SWIG_PY_INCLUDES="\$(SWIG_INCLUDES) $ac_cv_python_includes"    if test "$ac_cv_python_includes" = "none"; then      AC_MSG_WARN([python bindings cannot be built without distutils module])    fi    AC_CACHE_CHECK([for compiling Python extensions], [ac_cv_python_compile],[      ac_cv_python_compile="`$PYTHON ${abs_srcdir}/build/get-py-info.py --compile`"    ])    SWIG_PY_COMPILE="$ac_cv_python_compile"    AC_CACHE_CHECK([for linking Python extensions], [ac_cv_python_link],[      ac_cv_python_link="`$PYTHON ${abs_srcdir}/build/get-py-info.py --link`"    ])    SWIG_PY_LINK="$ac_cv_python_link"    AC_CACHE_CHECK([for linking Python libraries], [ac_cv_python_libs],[      ac_cv_python_libs="`$PYTHON ${abs_srcdir}/build/get-py-info.py --libs`"    ])    SWIG_PY_LIBS="$ac_cv_python_libs"    dnl Sun Forte adds an extra space before substituting APR_INT64_T_FMT    dnl gcc-2.95 adds an extra space after substituting APR_INT64_T_FMT    dnl thus the egrep patterns have a + in them.    SVN_PYCFMT_SAVE_CPPFLAGS="$CPPFLAGS"    CPPFLAGS="$CPPFLAGS $SVN_APR_INCLUDES"    AC_CACHE_CHECK([for apr_int64_t Python/C API format string],                   [svn_cv_pycfmt_apr_int64_t], [      if test "x$svn_cv_pycfmt_apr_int64_t" = "x"; then        AC_EGREP_CPP([MaTcHtHiS +\"lld\" +EnDeNd],                     [#include <apr.h>                      MaTcHtHiS APR_INT64_T_FMT EnDeNd],                     [svn_cv_pycfmt_apr_int64_t="L"])      fi      if test "x$svn_cv_pycfmt_apr_int64_t" = "x"; then        AC_EGREP_CPP([MaTcHtHiS +\"ld\" +EnDeNd],r                     [#include <apr.h>                      MaTcHtHiS APR_INT64_T_FMT EnDeNd],                     [svn_cv_pycfmt_apr_int64_t="l"])      fi      if test "x$svn_cv_pycfmt_apr_int64_t" = "x"; then        AC_EGREP_CPP([MaTcHtHiS +\"d\" +EnDeNd],                     [#include <apr.h>                      MaTcHtHiS APR_INT64_T_FMT EnDeNd],                     [svn_cv_pycfmt_apr_int64_t="i"])      fi    ])    CPPFLAGS="$SVN_PYCFMT_SAVE_CPPFLAGS"    if test "x$svn_cv_pycfmt_apr_int64_t" = "x"; then      AC_MSG_ERROR([failed to recognize APR_INT64_T_FMT on this platform])    fi    AC_DEFINE_UNQUOTED([SVN_APR_INT64_T_PYCFMT],                       ["$svn_cv_pycfmt_apr_int64_t"],                       [Define to the Python/C API format character suitable]                       [ for apr_int64_t])  fi  if test "$PERL" != "none"; then    AC_MSG_CHECKING([perl version])    dnl Note that the q() bit is there to avoid unbalanced brackets    dnl which m4 really doesn't like.    PERL_VERSION="`$PERL -e 'q([[); print $]] * 1000000,$/;'`"    AC_MSG_RESULT([$PERL_VERSION])    if test "$PERL_VERSION" -ge "5008000"; then      SWIG_PL_INCLUDES="\$(SWIG_INCLUDES) `$PERL -MExtUtils::Embed -e ccopts`"    else      AC_MSG_WARN([perl bindings require perl 5.8.0 or newer.])    fi  fi  SWIG_RB_COMPILE="none"  SWIG_RB_LINK="none"  if test "$RUBY" != "none"; then    AC_MSG_NOTICE([Configuring Ruby SWIG binding])    AC_CACHE_CHECK([for Ruby include path], [svn_cv_ruby_includes],[    svn_cv_ruby_includes="-I. -I`$RUBY -rrbconfig -e 'print Config::CONFIG.fetch(%q(archdir))'`"    ])    SWIG_RB_INCLUDES="\$(SWIG_INCLUDES) $svn_cv_ruby_includes"    AC_CACHE_CHECK([how to compile Ruby extensions], [svn_cv_ruby_compile],[      svn_cv_ruby_compile="`$RUBY -rrbconfig -e 'print Config::CONFIG.fetch(%q(CC)), %q( ), Config::CONFIG.fetch(%q(CFLAGS))'` \$(SWIG_RB_INCLUDES)"    ])    SWIG_RB_COMPILE="$svn_cv_ruby_compile"    AC_CACHE_CHECK([how to link Ruby extensions], [svn_cv_ruby_link],[      svn_cv_ruby_link="`$RUBY -rrbconfig -e 'print Config::CONFIG.fetch(%q(LDSHARED)).sub(/^\S+/, Config::CONFIG.fetch(%q(CC)) + %q( -shrext .) + Config::CONFIG.fetch(%q(DLEXT)))'`"    ])    SWIG_RB_LINK="$svn_cv_ruby_link"    AC_CACHE_VAL([svn_cv_ruby_sitedir],[      svn_cv_ruby_sitedir="`$RUBY -rrbconfig -e 'print Config::CONFIG.fetch(%q(sitedir))'`"    ])    AC_ARG_WITH([ruby-sitedir],    AC_HELP_STRING([--with-ruby-sitedir=SITEDIR],                               [install Ruby bindings in SITEDIR                                (default is same as ruby's one)]),    [svn_ruby_installdir="$withval"],    [svn_ruby_installdir="$svn_cv_ruby_sitedir"])    AC_MSG_CHECKING([where to install Ruby scripts])    AC_CACHE_VAL([svn_cv_ruby_sitedir_libsuffix],[      svn_cv_ruby_sitedir_libsuffix="`$RUBY -rrbconfig -e 'print Config::CONFIG.fetch(%q(sitelibdir)).sub(/^#{Config::CONFIG.fetch(%q(sitedir))}/, %q())'`"    ])    SWIG_RB_SITE_LIB_DIR="${svn_ruby_installdir}${svn_cv_ruby_sitedir_libsuffix}"    AC_MSG_RESULT([$SWIG_RB_SITE_LIB_DIR])    AC_MSG_CHECKING([where to install Ruby extensions])    AC_CACHE_VAL([svn_cv_ruby_sitedir_archsuffix],[      svn_cv_ruby_sitedir_archsuffix="`$RUBY -rrbconfig -e 'print Config::CONFIG.fetch(%q(sitearchdir)).sub(/^#{Config::CONFIG.fetch(%q(sitedir))}/, %q())'`"    ])    SWIG_RB_SITE_ARCH_DIR="${svn_ruby_installdir}${svn_cv_ruby_sitedir_archsuffix}"    AC_MSG_RESULT([$SWIG_RB_SITE_ARCH_DIR])    AC_MSG_CHECKING([how to use output level for Ruby bindings tests])    AC_CACHE_VAL([svn_cv_ruby_test_verbose],[      svn_cv_ruby_test_verbose="normal"    ])    AC_ARG_WITH([ruby-test-verbose],    AC_HELP_STRING([--with-ruby-test-verbose=LEVEL],                               [how to use output level for Ruby bindings tests                                (default is normal)]),    [svn_ruby_test_verbose="$withval"],		  [svn_ruby_test_verbose="$svn_cv_ruby_test_verbose"])      SWIG_RB_TEST_VERBOSE="$svn_ruby_test_verbose"      AC_MSG_RESULT([$SWIG_RB_TEST_VERBOSE])  fi  AC_SUBST(SWIG)  AC_SUBST(SWIG_PY_INCLUDES)  AC_SUBST(SWIG_PY_COMPILE)  AC_SUBST(SWIG_PY_LINK)  AC_SUBST(SWIG_PY_LIBS)  AC_SUBST(SWIG_PL_INCLUDES)  AC_SUBST(SWIG_RB_LINK)  AC_SUBST(SWIG_RB_INCLUDES)  AC_SUBST(SWIG_RB_COMPILE)  AC_SUBST(SWIG_RB_SITE_LIB_DIR)  AC_SUBST(SWIG_RB_SITE_ARCH_DIR)  AC_SUBST(SWIG_RB_TEST_VERBOSE)])