1 dnl -------------------------------------------------------- -*- autoconf -*-
2 dnl Copyright 2002-2005 The Apache Software Foundation or its licensors, as
5 dnl Licensed under the Apache License, Version 2.0 (the "License");
6 dnl you may not use this file except in compliance with the License.
7 dnl You may obtain a copy of the License at
9 dnl http://www.apache.org/licenses/LICENSE-2.0
11 dnl Unless required by applicable law or agreed to in writing, software
12 dnl distributed under the License is distributed on an "AS IS" BASIS,
13 dnl WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 dnl See the License for the specific language governing permissions and
15 dnl limitations under the License.
18 dnl find_apu.m4 : locate the APR-util (APU) include files and libraries
20 dnl This macro file can be used by applications to find and use the APU
21 dnl library. It provides a standardized mechanism for using APU. It supports
22 dnl embedding APU into the application source, or locating an installed
25 dnl APR_FIND_APU(srcdir, builddir, implicit-install-check, acceptable-majors,
28 dnl where srcdir is the location of the bundled APU source directory, or
29 dnl empty if source is not bundled.
31 dnl where builddir is the location where the bundled APU will be built,
32 dnl or empty if the build will occur in the srcdir.
34 dnl where implicit-install-check set to 1 indicates if there is no
35 dnl --with-apr-util option specified, we will look for installed copies.
37 dnl where acceptable-majors is a space separated list of acceptable major
38 dnl version numbers. Often only a single major version will be acceptable.
39 dnl If multiple versions are specified, and --with-apr-util=PREFIX or the
40 dnl implicit installed search are used, then the first (leftmost) version
41 dnl in the list that is found will be used. Currently defaults to [0 1].
43 dnl where detailed-check is an M4 macro which sets the apu_acceptable to
44 dnl either "yes" or "no". The macro will be invoked for each installed
45 dnl copy of APU found, with the apu_config variable set appropriately.
46 dnl Only installed copies of APU which are considered acceptable by
47 dnl this macro will be considered found. If no installed copies are
48 dnl considered acceptable by this macro, apu_found will be set to either
49 dnl either "no" or "reconfig".
51 dnl Sets the following variables on exit:
53 dnl apu_found : "yes", "no", "reconfig"
55 dnl apu_config : If the apu-config tool exists, this refers to it. If
56 dnl apu_found is "reconfig", then the bundled directory
57 dnl should be reconfigured *before* using apu_config.
59 dnl Note: this macro file assumes that apr-config has been installed; it
60 dnl is normally considered a required part of an APR installation.
62 dnl Note: At this time, we cannot find *both* a source dir and a build dir.
63 dnl If both are available, the build directory should be passed to
64 dnl the --with-apr-util switch.
66 dnl Note: the installation layout is presumed to follow the standard
67 dnl PREFIX/lib and PREFIX/include pattern. If the APU config file
68 dnl is available (and can be found), then non-standard layouts are
69 dnl possible, since it will be described in the config file.
71 dnl If a bundled source directory is available and needs to be (re)configured,
72 dnl then apu_found is set to "reconfig". The caller should reconfigure the
73 dnl (passed-in) source directory, placing the result in the build directory,
76 dnl If apu_found is "yes" or "reconfig", then the caller should use the
77 dnl value of apu_config to fetch any necessary build/link information.
80 AC_DEFUN([APR_FIND_APU], [
83 if test "$target_os" = "os2-emx"; then
84 # Scripts don't pass test -x on OS/2
92 ifdef(AC_WARNING,([$0: missing argument 4 (acceptable-majors): Defaulting to APU 0.x then APU 1.x]))
93 acceptable_majors="0 1"
94 ], [acceptable_majors="$4"])
96 apu_temp_acceptable_apu_config=""
97 for apu_temp_major in $acceptable_majors
99 case $apu_temp_major in
101 apu_temp_acceptable_apu_config="$apu_temp_acceptable_apu_config apu-config"
104 apu_temp_acceptable_apu_config="$apu_temp_acceptable_apu_config apu-$apu_temp_major-config"
109 AC_MSG_CHECKING(for APR-util)
110 AC_ARG_WITH(apr-util,
111 [ --with-apr-util=PATH prefix for installed APU or the full path to
114 if test "$withval" = "no" || test "$withval" = "yes"; then
115 AC_MSG_ERROR([--with-apr-util requires a directory or file to be provided])
118 for apu_temp_apu_config_file in $apu_temp_acceptable_apu_config
120 for lookdir in "$withval/bin" "$withval"
122 if $TEST_X "$lookdir/$apu_temp_apu_config_file"; then
123 apu_config="$lookdir/$apu_temp_apu_config_file"
124 ifelse([$5], [], [], [
127 if test "$apu_acceptable" != "yes"; then
128 AC_MSG_WARN([Found APU in $apu_config, but it is considered unacceptable])
137 if test "$apu_found" != "yes" && $TEST_X "$withval" && $withval --help > /dev/null 2>&1 ; then
138 apu_config="$withval"
139 ifelse([$5], [], [apu_found="yes"], [
142 if test "$apu_acceptable" = "yes"; then
147 dnl if --with-apr-util is used, it is a fatal error for its argument
149 if test "$apu_found" != "yes"; then
150 AC_MSG_ERROR([the --with-apr-util parameter is incorrect. It must specify an install prefix, a build directory, or an apu-config file.])
153 if test -n "$3" && test "$3" = "1"; then
154 for apu_temp_apu_config_file in $apu_temp_acceptable_apu_config
156 if $apu_temp_apu_config_file --help > /dev/null 2>&1 ; then
157 apu_config="$apu_temp_apu_config_file"
158 ifelse([$5], [], [], [
161 if test "$apu_acceptable" != "yes"; then
162 AC_MSG_WARN([skipped APR-util at $apu_config, version not acceptable])
168 dnl look in some standard places (apparently not in builtin/default)
169 for lookdir in /usr /usr/local /usr/local/apr /opt/apr; do
170 if $TEST_X "$lookdir/bin/$apu_temp_apu_config_file"; then
171 apu_config="$lookdir/bin/$apu_temp_apu_config_file"
172 ifelse([$5], [], [], [
175 if test "$apu_acceptable" != "yes"; then
176 AC_MSG_WARN([skipped APR-util at $apu_config, version not acceptable])
186 dnl if we have not found anything yet and have bundled source, use that
187 if test "$apu_found" = "no" && test -d "$1"; then
188 apu_temp_abs_srcdir="`cd $1 && pwd`"
190 apu_bundled_major="`sed -n '/#define.*APU_MAJOR_VERSION/s/^[^0-9]*\([0-9]*\).*$/\1/p' \"$1/include/apu_version.h\"`"
191 case $apu_bundled_major in
193 AC_MSG_ERROR([failed to find major version of bundled APU])
196 apu_temp_apu_config_file="apu-config"
199 apu_temp_apu_config_file="apu-$apu_bundled_major-config"
202 if test -n "$2"; then
203 apu_config="$2/$apu_temp_apu_config_file"
205 apu_config="$1/$apu_temp_apu_config_file"
210 AC_MSG_RESULT($apu_found)