www.pudn.com > httpd-2.2.6-win32-src-r2.zip > find_apr.m4, change:2007-09-04,size:6469b


dnl -------------------------------------------------------- -*- autoconf -*- 
dnl Licensed to the Apache Software Foundation (ASF) under one or more 
dnl contributor license agreements.  See the NOTICE file distributed with 
dnl this work for additional information regarding copyright ownership. 
dnl The ASF licenses this file to You under the Apache License, Version 2.0 
dnl (the "License"); you may not use this file except in compliance with 
dnl the License.  You may obtain a copy of the License at 
dnl 
dnl     http://www.apache.org/licenses/LICENSE-2.0 
dnl 
dnl Unless required by applicable law or agreed to in writing, software 
dnl distributed under the License is distributed on an "AS IS" BASIS, 
dnl WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
dnl See the License for the specific language governing permissions and 
dnl limitations under the License. 
 
dnl 
dnl find_apr.m4 : locate the APR include files and libraries 
dnl 
dnl This macro file can be used by applications to find and use the APR 
dnl library. It provides a standardized mechanism for using APR. It supports 
dnl embedding APR into the application source, or locating an installed 
dnl copy of APR. 
dnl 
dnl APR_FIND_APR(srcdir, builddir, implicit-install-check, acceptable-majors) 
dnl 
dnl   where srcdir is the location of the bundled APR source directory, or 
dnl   empty if source is not bundled. 
dnl 
dnl   where builddir is the location where the bundled APR will will be built, 
dnl   or empty if the build will occur in the srcdir. 
dnl 
dnl   where implicit-install-check set to 1 indicates if there is no 
dnl   --with-apr option specified, we will look for installed copies. 
dnl 
dnl   where acceptable-majors is a space separated list of acceptable major 
dnl   version numbers. Often only a single major version will be acceptable. 
dnl   If multiple versions are specified, and --with-apr=PREFIX or the 
dnl   implicit installed search are used, then the first (leftmost) version 
dnl   in the list that is found will be used.  Currently defaults to [0 1]. 
dnl 
dnl Sets the following variables on exit: 
dnl 
dnl   apr_found : "yes", "no", "reconfig" 
dnl 
dnl   apr_config : If the apr-config tool exists, this refers to it. If 
dnl                apr_found is "reconfig", then the bundled directory 
dnl                should be reconfigured *before* using apr_config. 
dnl 
dnl Note: this macro file assumes that apr-config has been installed; it 
dnl       is normally considered a required part of an APR installation. 
dnl 
dnl If a bundled source directory is available and needs to be (re)configured, 
dnl then apr_found is set to "reconfig". The caller should reconfigure the 
dnl (passed-in) source directory, placing the result in the build directory, 
dnl as appropriate. 
dnl 
dnl If apr_found is "yes" or "reconfig", then the caller should use the 
dnl value of apr_config to fetch any necessary build/link information. 
dnl 
 
AC_DEFUN([APR_FIND_APR], [ 
  apr_found="no" 
 
  if test "$target_os" = "os2-emx"; then 
    # Scripts don't pass test -x on OS/2 
    TEST_X="test -f" 
  else 
    TEST_X="test -x" 
  fi 
 
  ifelse([$4], [], [ 
         ifdef(AC_WARNING,AC_WARNING([$0: missing argument 4 (acceptable-majors): Defaulting to APR 0.x then APR 1.x])) 
         acceptable_majors="0 1"], 
         [acceptable_majors="$4"]) 
 
  apr_temp_acceptable_apr_config="" 
  for apr_temp_major in $acceptable_majors 
  do 
    case $apr_temp_major in 
      0) 
      apr_temp_acceptable_apr_config="$apr_temp_acceptable_apr_config apr-config" 
      ;; 
      *) 
      apr_temp_acceptable_apr_config="$apr_temp_acceptable_apr_config apr-$apr_temp_major-config" 
      ;; 
    esac 
  done 
 
  AC_MSG_CHECKING(for APR) 
  AC_ARG_WITH(apr, 
  [  --with-apr=PATH         prefix for installed APR, path to APR build tree, 
                          or the full path to apr-config], 
  [ 
    if test "$withval" = "no" || test "$withval" = "yes"; then 
      AC_MSG_ERROR([--with-apr requires a directory or file to be provided]) 
    fi 
 
    for apr_temp_apr_config_file in $apr_temp_acceptable_apr_config 
    do 
      for lookdir in "$withval/bin" "$withval" 
      do 
        if $TEST_X "$lookdir/$apr_temp_apr_config_file"; then 
          apr_found="yes" 
          apr_config="$lookdir/$apr_temp_apr_config_file" 
          break 2 
        fi 
      done 
    done 
 
    if test "$apr_found" != "yes" && $TEST_X "$withval" && $withval --help > /dev/null 2>&1 ; then 
      apr_found="yes" 
      apr_config="$withval" 
    fi 
 
    dnl if --with-apr is used, it is a fatal error for its argument 
    dnl to be invalid 
    if test "$apr_found" != "yes"; then 
      AC_MSG_ERROR([the --with-apr parameter is incorrect. It must specify an install prefix, a build directory, or an apr-config file.]) 
    fi 
  ],[ 
    dnl If we allow installed copies, check those before using bundled copy. 
    if test -n "$3" && test "$3" = "1"; then 
      for apr_temp_apr_config_file in $apr_temp_acceptable_apr_config 
      do 
        if $apr_temp_apr_config_file --help > /dev/null 2>&1 ; then 
          apr_found="yes" 
          apr_config="$apr_temp_apr_config_file" 
          break 
        else 
          dnl look in some standard places 
          for lookdir in /usr /usr/local /usr/local/apr /opt/apr; do 
            if $TEST_X "$lookdir/bin/$apr_temp_apr_config_file"; then 
              apr_found="yes" 
              apr_config="$lookdir/bin/$apr_temp_apr_config_file" 
              break 2 
            fi 
          done 
        fi 
      done 
    fi 
    dnl if we have not found anything yet and have bundled source, use that 
    if test "$apr_found" = "no" && test -d "$1"; then 
      apr_temp_abs_srcdir="`cd $1 && pwd`" 
      apr_found="reconfig" 
      apr_bundled_major="`sed -n '/#define.*APR_MAJOR_VERSION/s/^[^0-9]*\([0-9]*\).*$/\1/p' \"$1/include/apr_version.h\"`" 
      case $apr_bundled_major in 
        "") 
          AC_MSG_ERROR([failed to find major version of bundled APR]) 
        ;; 
        0) 
          apr_temp_apr_config_file="apr-config" 
        ;; 
        *) 
          apr_temp_apr_config_file="apr-$apr_bundled_major-config" 
        ;; 
      esac 
      if test -n "$2"; then 
        apr_config="$2/$apr_temp_apr_config_file" 
      else 
        apr_config="$1/$apr_temp_apr_config_file" 
      fi 
    fi 
  ]) 
 
  AC_MSG_RESULT($apr_found) 
])