1dnl -------------------------------------------------------- -*- autoconf -*- 2dnl Licensed to the Apache Software Foundation (ASF) under one or more 3dnl contributor license agreements. See the NOTICE file distributed with 4dnl this work for additional information regarding copyright ownership. 5dnl The ASF licenses this file to You under the Apache License, Version 2.0 6dnl (the "License"); you may not use this file except in compliance with 7dnl the License. You may obtain a copy of the License at 8dnl 9dnl http://www.apache.org/licenses/LICENSE-2.0 10dnl 11dnl Unless required by applicable law or agreed to in writing, software 12dnl distributed under the License is distributed on an "AS IS" BASIS, 13dnl WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14dnl See the License for the specific language governing permissions and 15dnl limitations under the License. 16 17dnl 18dnl find_apr.m4 : locate the APR include files and libraries 19dnl 20dnl This macro file can be used by applications to find and use the APR 21dnl library. It provides a standardized mechanism for using APR. It supports 22dnl embedding APR into the application source, or locating an installed 23dnl copy of APR. 24dnl 25dnl APR_FIND_APR(srcdir, builddir, implicit-install-check, acceptable-majors, 26dnl detailed-check) 27dnl 28dnl where srcdir is the location of the bundled APR source directory, or 29dnl empty if source is not bundled. 30dnl 31dnl where builddir is the location where the bundled APR will will be built, 32dnl or empty if the build will occur in the srcdir. 33dnl 34dnl where implicit-install-check set to 1 indicates if there is no 35dnl --with-apr option specified, we will look for installed copies. 36dnl 37dnl where acceptable-majors is a space separated list of acceptable major 38dnl version numbers. Often only a single major version will be acceptable. 39dnl If multiple versions are specified, and --with-apr=PREFIX or the 40dnl implicit installed search are used, then the first (leftmost) version 41dnl in the list that is found will be used. Currently defaults to [0 1]. 42dnl 43dnl where detailed-check is an M4 macro which sets the apr_acceptable to 44dnl either "yes" or "no". The macro will be invoked for each installed 45dnl copy of APR found, with the apr_config variable set appropriately. 46dnl Only installed copies of APR which are considered acceptable by 47dnl this macro will be considered found. If no installed copies are 48dnl considered acceptable by this macro, apr_found will be set to either 49dnl either "no" or "reconfig". 50dnl 51dnl Sets the following variables on exit: 52dnl 53dnl apr_found : "yes", "no", "reconfig" 54dnl 55dnl apr_config : If the apr-config tool exists, this refers to it. If 56dnl apr_found is "reconfig", then the bundled directory 57dnl should be reconfigured *before* using apr_config. 58dnl 59dnl Note: this macro file assumes that apr-config has been installed; it 60dnl is normally considered a required part of an APR installation. 61dnl 62dnl If a bundled source directory is available and needs to be (re)configured, 63dnl then apr_found is set to "reconfig". The caller should reconfigure the 64dnl (passed-in) source directory, placing the result in the build directory, 65dnl as appropriate. 66dnl 67dnl If apr_found is "yes" or "reconfig", then the caller should use the 68dnl value of apr_config to fetch any necessary build/link information. 69dnl 70 71AC_DEFUN([APR_FIND_APR], [ 72 apr_found="no" 73 74 if test "$target_os" = "os2-emx"; then 75 # Scripts don't pass test -x on OS/2 76 TEST_X="test -f" 77 else 78 TEST_X="test -x" 79 fi 80 81 ifelse([$4], [], [ 82 ifdef(AC_WARNING,AC_WARNING([$0: missing argument 4 (acceptable-majors): Defaulting to APR 0.x then APR 1.x])) 83 acceptable_majors="0 1"], 84 [acceptable_majors="$4"]) 85 86 apr_temp_acceptable_apr_config="" 87 for apr_temp_major in $acceptable_majors 88 do 89 case $apr_temp_major in 90 0) 91 apr_temp_acceptable_apr_config="$apr_temp_acceptable_apr_config apr-config" 92 ;; 93 *) 94 apr_temp_acceptable_apr_config="$apr_temp_acceptable_apr_config apr-$apr_temp_major-config" 95 ;; 96 esac 97 done 98 99 AC_MSG_CHECKING(for APR) 100 AC_ARG_WITH(apr, 101 [ --with-apr=PATH prefix for installed APR or the full path to 102 apr-config], 103 [ 104 if test "$withval" = "no" || test "$withval" = "yes"; then 105 AC_MSG_ERROR([--with-apr requires a directory or file to be provided]) 106 fi 107 108 for apr_temp_apr_config_file in $apr_temp_acceptable_apr_config 109 do 110 for lookdir in "$withval/bin" "$withval" 111 do 112 if $TEST_X "$lookdir/$apr_temp_apr_config_file"; then 113 apr_config="$lookdir/$apr_temp_apr_config_file" 114 ifelse([$5], [], [], [ 115 apr_acceptable="yes" 116 $5 117 if test "$apr_acceptable" != "yes"; then 118 AC_MSG_WARN([Found APR in $apr_config, but we think it is considered unacceptable]) 119 continue 120 fi]) 121 apr_found="yes" 122 break 2 123 fi 124 done 125 done 126 127 if test "$apr_found" != "yes" && $TEST_X "$withval" && $withval --help > /dev/null 2>&1 ; then 128 apr_config="$withval" 129 ifelse([$5], [], [apr_found="yes"], [ 130 apr_acceptable="yes" 131 $5 132 if test "$apr_acceptable" = "yes"; then 133 apr_found="yes" 134 fi]) 135 fi 136 137 dnl if --with-apr is used, it is a fatal error for its argument 138 dnl to be invalid 139 if test "$apr_found" != "yes"; then 140 AC_MSG_ERROR([the --with-apr parameter is incorrect. It must specify an install prefix, a build directory, or an apr-config file.]) 141 fi 142 ],[ 143 dnl If we allow installed copies, check those before using bundled copy. 144 if test -n "$3" && test "$3" = "1"; then 145 for apr_temp_apr_config_file in $apr_temp_acceptable_apr_config 146 do 147 if $apr_temp_apr_config_file --help > /dev/null 2>&1 ; then 148 apr_config="$apr_temp_apr_config_file" 149 ifelse([$5], [], [], [ 150 apr_acceptable="yes" 151 $5 152 if test "$apr_acceptable" != "yes"; then 153 AC_MSG_WARN([skipped APR at $apr_config, version not acceptable]) 154 continue 155 fi]) 156 apr_found="yes" 157 break 158 else 159 dnl look in some standard places 160 for lookdir in /usr /usr/local /usr/local/apr /opt/apr; do 161 if $TEST_X "$lookdir/bin/$apr_temp_apr_config_file"; then 162 apr_config="$lookdir/bin/$apr_temp_apr_config_file" 163 ifelse([$5], [], [], [ 164 apr_acceptable="yes" 165 $5 166 if test "$apr_acceptable" != "yes"; then 167 AC_MSG_WARN([skipped APR at $apr_config, version not acceptable]) 168 continue 169 fi]) 170 apr_found="yes" 171 break 2 172 fi 173 done 174 fi 175 done 176 fi 177 dnl if we have not found anything yet and have bundled source, use that 178 if test "$apr_found" = "no" && test -d "$1"; then 179 apr_temp_abs_srcdir="`cd \"$1\" && pwd`" 180 apr_found="reconfig" 181 apr_bundled_major="`sed -n '/#define.*APR_MAJOR_VERSION/s/^[^0-9]*\([0-9]*\).*$/\1/p' \"$1/include/apr_version.h\"`" 182 case $apr_bundled_major in 183 "") 184 AC_MSG_ERROR([failed to find major version of bundled APR]) 185 ;; 186 0) 187 apr_temp_apr_config_file="apr-config" 188 ;; 189 *) 190 apr_temp_apr_config_file="apr-$apr_bundled_major-config" 191 ;; 192 esac 193 if test -n "$2"; then 194 apr_config="$2/$apr_temp_apr_config_file" 195 else 196 apr_config="$1/$apr_temp_apr_config_file" 197 fi 198 fi 199 ]) 200 201 AC_MSG_RESULT($apr_found) 202]) 203