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Diffstat (limited to 'build/find_apr.m4')
| -rw-r--r-- | build/find_apr.m4 | 202 |
1 files changed, 202 insertions, 0 deletions
diff --git a/build/find_apr.m4 b/build/find_apr.m4 new file mode 100644 index 0000000..925e523 --- /dev/null +++ b/build/find_apr.m4 @@ -0,0 +1,202 @@ +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) +]) |