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