www.pudn.com > httpd-2.2.6-win32-src-r2.zip > find_apu.m4, change:2007-09-04,size:6784b


dnl -------------------------------------------------------- -*- autoconf -*- 
dnl Copyright 2002-2005 The Apache Software Foundation or its licensors, as 
dnl applicable. 
dnl 
dnl Licensed under the Apache License, Version 2.0 (the "License"); 
dnl you may not use this file except in compliance with the License. 
dnl 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_apu.m4 : locate the APR-util (APU) include files and libraries 
dnl 
dnl This macro file can be used by applications to find and use the APU 
dnl library. It provides a standardized mechanism for using APU. It supports 
dnl embedding APU into the application source, or locating an installed 
dnl copy of APU. 
dnl 
dnl APR_FIND_APU(srcdir, builddir, implicit-install-check, acceptable-majors) 
dnl 
dnl   where srcdir is the location of the bundled APU source directory, or 
dnl   empty if source is not bundled. 
dnl 
dnl   where builddir is the location where the bundled APU 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-util 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-util=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   apu_found : "yes", "no", "reconfig" 
dnl 
dnl   apu_config : If the apu-config tool exists, this refers to it.  If 
dnl                apu_found is "reconfig", then the bundled directory 
dnl                should be reconfigured *before* using apu_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 Note: At this time, we cannot find *both* a source dir and a build dir. 
dnl       If both are available, the build directory should be passed to 
dnl       the --with-apr-util switch. 
dnl 
dnl Note: the installation layout is presumed to follow the standard 
dnl       PREFIX/lib and PREFIX/include pattern. If the APU config file 
dnl       is available (and can be found), then non-standard layouts are 
dnl       possible, since it will be described in the config file. 
dnl 
dnl If a bundled source directory is available and needs to be (re)configured, 
dnl then apu_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 apu_found is "yes" or "reconfig", then the caller should use the 
dnl value of apu_config to fetch any necessary build/link information. 
dnl 
 
AC_DEFUN([APR_FIND_APU], [ 
  apu_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,([$0: missing argument 4 (acceptable-majors): Defaulting to APU 0.x then APU 1.x])) 
    acceptable_majors="0 1" 
  ], [acceptable_majors="$4"]) 
 
  apu_temp_acceptable_apu_config="" 
  for apu_temp_major in $acceptable_majors 
  do 
    case $apu_temp_major in 
      0) 
      apu_temp_acceptable_apu_config="$apu_temp_acceptable_apu_config apu-config" 
      ;; 
      *) 
      apu_temp_acceptable_apu_config="$apu_temp_acceptable_apu_config apu-$apu_temp_major-config" 
      ;; 
    esac 
  done 
 
  AC_MSG_CHECKING(for APR-util) 
  AC_ARG_WITH(apr-util, 
  [  --with-apr-util=PATH    prefix for installed APU, path to APU build tree, 
                          or the full path to apu-config], 
  [ 
    if test "$withval" = "no" || test "$withval" = "yes"; then 
      AC_MSG_ERROR([--with-apr-util requires a directory or file to be provided]) 
    fi 
 
    for apu_temp_apu_config_file in $apu_temp_acceptable_apu_config 
    do 
      for lookdir in "$withval/bin" "$withval" 
      do 
        if $TEST_X "$lookdir/$apu_temp_apu_config_file"; then 
          apu_found="yes" 
          apu_config="$lookdir/$apu_temp_apu_config_file" 
          break 2 
        fi 
      done 
    done 
 
    if test "$apu_found" != "yes" && $TEST_X "$withval" && $withval --help > /dev/null 2>&1 ; then 
      apu_found="yes" 
      apu_config="$withval" 
    fi 
 
    dnl if --with-apr-util is used, it is a fatal error for its argument 
    dnl to be invalid 
    if test "$apu_found" != "yes"; then 
      AC_MSG_ERROR([the --with-apr-util parameter is incorrect. It must specify an install prefix, a build directory, or an apu-config file.]) 
    fi 
  ],[ 
    if test -n "$3" && test "$3" = "1"; then 
      for apu_temp_apu_config_file in $apu_temp_acceptable_apu_config 
      do 
        if $apu_temp_apu_config_file --help > /dev/null 2>&1 ; then 
          apu_found="yes" 
          apu_config="$apu_temp_apu_config_file" 
          break 
        else 
          dnl look in some standard places (apparently not in builtin/default) 
          for lookdir in /usr /usr/local /usr/local/apr /opt/apr; do 
            if $TEST_X "$lookdir/bin/$apu_temp_apu_config_file"; then 
              apu_found="yes" 
              apu_config="$lookdir/bin/$apu_temp_apu_config_file" 
              break 2 
            fi 
          done 
        fi 
      done 
    fi 
    dnl if we have not found anything yet and have bundled source, use that 
    if test "$apu_found" = "no" && test -d "$1"; then 
      apu_temp_abs_srcdir="`cd $1 && pwd`" 
      apu_found="reconfig" 
      apu_bundled_major="`sed -n '/#define.*APU_MAJOR_VERSION/s/^[^0-9]*\([0-9]*\).*$/\1/p' \"$1/include/apu_version.h\"`" 
      case $apu_bundled_major in 
        "") 
          AC_MSG_ERROR([failed to find major version of bundled APU]) 
        ;; 
        0) 
          apu_temp_apu_config_file="apu-config" 
        ;; 
        *) 
          apu_temp_apu_config_file="apu-$apu_bundled_major-config" 
        ;; 
      esac 
      if test -n "$2"; then 
        apu_config="$2/$apu_temp_apu_config_file" 
      else 
        apu_config="$1/$apu_temp_apu_config_file" 
      fi 
    fi 
  ]) 
 
  AC_MSG_RESULT($apu_found) 
])