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find_apu.m4
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find_apu.m4
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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_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 detailed-check)
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 where detailed-check is an M4 macro which sets the apu_acceptable to
dnl either "yes" or "no". The macro will be invoked for each installed
dnl copy of APU found, with the apu_config variable set appropriately.
dnl Only installed copies of APU which are considered acceptable by
dnl this macro will be considered found. If no installed copies are
dnl considered acceptable by this macro, apu_found will be set to either
dnl either "no" or "reconfig".
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 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/$apu_temp_apu_config_file"; then
apu_config="$lookdir/$apu_temp_apu_config_file"
ifelse([$5], [], [], [
apu_acceptable="yes"
$5
if test "$apu_acceptable" != "yes"; then
AC_MSG_WARN([Found APU in $apu_config, but it is considered unacceptable])
continue
fi])
apu_found="yes"
break 2
fi
done
done
if test "$apu_found" != "yes" && $TEST_X "$withval" && $withval --help > /dev/null 2>&1 ; then
apu_config="$withval"
ifelse([$5], [], [apu_found="yes"], [
apu_acceptable="yes"
$5
if test "$apu_acceptable" = "yes"; then
apu_found="yes"
fi])
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 $apu_temp_apu_config_file --help > /dev/null 2>&1 ; then
apu_config="$apu_temp_apu_config_file"
ifelse([$5], [], [], [
apu_acceptable="yes"
$5
if test "$apu_acceptable" != "yes"; then
AC_MSG_WARN([skipped APR-util at $apu_config, version not acceptable])
continue
fi])
apu_found="yes"
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/$apu_temp_apu_config_file"; then
apu_config="$lookdir/bin/$apu_temp_apu_config_file"
ifelse([$5], [], [], [
apu_acceptable="yes"
$5
if test "$apu_acceptable" != "yes"; then
AC_MSG_WARN([skipped APR-util at $apu_config, version not acceptable])
continue
fi])
apu_found="yes"
break 2
fi
done
fi
done
fi
dnl if we have not found anything yet and have bundled source, use that
if test "$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)
])