Annotation of freem/m4/m4_ax_path_bdb.m4, revision 1.1

1.1     ! snw         1: # ===========================================================================
        !             2: #       https://www.gnu.org/software/autoconf-archive/ax_path_bdb.html
        !             3: # ===========================================================================
        !             4: #
        !             5: # SYNOPSIS
        !             6: #
        !             7: #   AX_PATH_BDB([MINIMUM-VERSION], [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
        !             8: #
        !             9: # DESCRIPTION
        !            10: #
        !            11: #   This macro finds the latest version of Berkeley DB on the system, and
        !            12: #   ensures that the header file and library versions match. If
        !            13: #   MINIMUM-VERSION is specified, it will ensure that the library found is
        !            14: #   at least that version.
        !            15: #
        !            16: #   It determines the name of the library as well as the path to the header
        !            17: #   file and library. It will check both the default environment as well as
        !            18: #   the default Berkeley DB install location. When found, it sets BDB_LIBS,
        !            19: #   BDB_CPPFLAGS, and BDB_LDFLAGS to the necessary values to add to LIBS,
        !            20: #   CPPFLAGS, and LDFLAGS, as well as setting BDB_VERSION to the version
        !            21: #   found. HAVE_DB_H is defined also.
        !            22: #
        !            23: #   The option --with-bdb-dir=DIR can be used to specify a specific Berkeley
        !            24: #   DB installation to use.
        !            25: #
        !            26: #   An example of it's use is:
        !            27: #
        !            28: #     AX_PATH_BDB([3],[
        !            29: #       LIBS="$BDB_LIBS $LIBS"
        !            30: #       LDFLAGS="$BDB_LDFLAGS $LDFLAGS"
        !            31: #       CPPFLAGS="$CPPFLAGS $BDB_CPPFLAGS"
        !            32: #     ])
        !            33: #
        !            34: #   which will locate the latest version of Berkeley DB on the system, and
        !            35: #   ensure that it is version 3.0 or higher.
        !            36: #
        !            37: #   Details: This macro does not use either AC_CHECK_HEADERS or AC_CHECK_LIB
        !            38: #   because, first, the functions inside the library are sometimes renamed
        !            39: #   to contain a version code that is only available from the db.h on the
        !            40: #   system, and second, because it is common to have multiple db.h and libdb
        !            41: #   files on a system it is important to make sure the ones being used
        !            42: #   correspond to the same version. Additionally, there are many different
        !            43: #   possible names for libdb when installed by an OS distribution, and these
        !            44: #   need to be checked if db.h does not correspond to libdb.
        !            45: #
        !            46: #   When cross compiling, only header versions are verified since it would
        !            47: #   be difficult to check the library version. Additionally the default
        !            48: #   Berkeley DB installation locations /usr/local/BerkeleyDB* are not
        !            49: #   searched for higher versions of the library.
        !            50: #
        !            51: #   The format for the list of library names to search came from the Cyrus
        !            52: #   IMAP distribution, although they are generated dynamically here, and
        !            53: #   only for the version found in db.h.
        !            54: #
        !            55: #   The macro AX_COMPARE_VERSION is required to use this macro, and should
        !            56: #   be available from the Autoconf Macro Archive.
        !            57: #
        !            58: #   The author would like to acknowledge the generous and valuable feedback
        !            59: #   from Guido Draheim, without which this macro would be far less robust,
        !            60: #   and have poor and inconsistent cross compilation support.
        !            61: #
        !            62: #   Changes:
        !            63: #
        !            64: #    1/5/05 applied patch from Rafal Rzepecki to eliminate compiler
        !            65: #           warning about unused variable, argv
        !            66: #
        !            67: # LICENSE
        !            68: #
        !            69: #   Copyright (c) 2008 Tim Toolan <toolan@ele.uri.edu>
        !            70: #
        !            71: #   Copying and distribution of this file, with or without modification, are
        !            72: #   permitted in any medium without royalty provided the copyright notice
        !            73: #   and this notice are preserved. This file is offered as-is, without any
        !            74: #   warranty.
        !            75: 
        !            76: #serial 15
        !            77: 
        !            78: dnl #########################################################################
        !            79: AC_DEFUN([AX_PATH_BDB], [
        !            80:   dnl # Used to indicate success or failure of this function.
        !            81:   ax_path_bdb_ok=no
        !            82: 
        !            83:   # Add --with-bdb-dir option to configure.
        !            84:   AC_ARG_WITH([bdb-dir],
        !            85:     [AS_HELP_STRING([--with-bdb-dir=DIR],
        !            86:                     [Berkeley DB installation directory])])
        !            87: 
        !            88:   # Check if --with-bdb-dir was specified.
        !            89:   if test "x$with_bdb_dir" = "x" ; then
        !            90:     # No option specified, so just search the system.
        !            91:     AX_PATH_BDB_NO_OPTIONS([$1], [HIGHEST], [
        !            92:       ax_path_bdb_ok=yes
        !            93:     ])
        !            94:    else
        !            95:      # Set --with-bdb-dir option.
        !            96:      ax_path_bdb_INC="$with_bdb_dir/include"
        !            97:      ax_path_bdb_LIB="$with_bdb_dir/lib"
        !            98: 
        !            99:      dnl # Save previous environment, and modify with new stuff.
        !           100:      ax_path_bdb_save_CPPFLAGS="$CPPFLAGS"
        !           101:      CPPFLAGS="-I$ax_path_bdb_INC $CPPFLAGS"
        !           102: 
        !           103:      ax_path_bdb_save_LDFLAGS=$LDFLAGS
        !           104:      LDFLAGS="-L$ax_path_bdb_LIB $LDFLAGS"
        !           105: 
        !           106:      # Check for specific header file db.h
        !           107:      AC_MSG_CHECKING([db.h presence in $ax_path_bdb_INC])
        !           108:      if test -f "$ax_path_bdb_INC/db.h" ; then
        !           109:        AC_MSG_RESULT([yes])
        !           110:        # Check for library
        !           111:        AX_PATH_BDB_NO_OPTIONS([$1], [ENVONLY], [
        !           112:          ax_path_bdb_ok=yes
        !           113:          BDB_CPPFLAGS="-I$ax_path_bdb_INC"
        !           114:          BDB_LDFLAGS="-L$ax_path_bdb_LIB"
        !           115:        ])
        !           116:      else
        !           117:        AC_MSG_RESULT([no])
        !           118:        AC_MSG_NOTICE([no usable Berkeley DB not found])
        !           119:      fi
        !           120: 
        !           121:      dnl # Restore the environment.
        !           122:      CPPFLAGS="$ax_path_bdb_save_CPPFLAGS"
        !           123:      LDFLAGS="$ax_path_bdb_save_LDFLAGS"
        !           124: 
        !           125:   fi
        !           126: 
        !           127:   dnl # Execute ACTION-IF-FOUND / ACTION-IF-NOT-FOUND.
        !           128:   if test "$ax_path_bdb_ok" = "yes" ; then
        !           129:     m4_ifvaln([$2],[$2],[:])dnl
        !           130:     m4_ifvaln([$3],[else $3])dnl
        !           131:   fi
        !           132: 
        !           133: ]) dnl AX_PATH_BDB
        !           134: 
        !           135: dnl #########################################################################
        !           136: dnl Check for berkeley DB of at least MINIMUM-VERSION on system.
        !           137: dnl
        !           138: dnl The OPTION argument determines how the checks occur, and can be one of:
        !           139: dnl
        !           140: dnl   HIGHEST -  Check both the environment and the default installation
        !           141: dnl              directories for Berkeley DB and choose the version that
        !           142: dnl              is highest. (default)
        !           143: dnl   ENVFIRST - Check the environment first, and if no satisfactory
        !           144: dnl              library is found there check the default installation
        !           145: dnl              directories for Berkeley DB which is /usr/local/BerkeleyDB*
        !           146: dnl   ENVONLY -  Check the current environment only.
        !           147: dnl
        !           148: dnl Requires AX_PATH_BDB_PATH_GET_VERSION, AX_PATH_BDB_PATH_FIND_HIGHEST,
        !           149: dnl          AX_PATH_BDB_ENV_CONFIRM_LIB, AX_PATH_BDB_ENV_GET_VERSION, and
        !           150: dnl          AX_COMPARE_VERSION macros.
        !           151: dnl
        !           152: dnl Result: sets ax_path_bdb_no_options_ok to yes or no
        !           153: dnl         sets BDB_LIBS, BDB_CPPFLAGS, BDB_LDFLAGS, BDB_VERSION
        !           154: dnl
        !           155: dnl AX_PATH_BDB_NO_OPTIONS([MINIMUM-VERSION], [OPTION], [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
        !           156: AC_DEFUN([AX_PATH_BDB_NO_OPTIONS], [
        !           157:   dnl # Used to indicate success or failure of this function.
        !           158:   ax_path_bdb_no_options_ok=no
        !           159: 
        !           160:   # Values to add to environment to use Berkeley DB.
        !           161:   BDB_VERSION=''
        !           162:   BDB_LIBS=''
        !           163:   BDB_CPPFLAGS=''
        !           164:   BDB_LDFLAGS=''
        !           165: 
        !           166:   # Check cross compilation here.
        !           167:   if test "x$cross_compiling" = "xyes" ; then
        !           168:     # If cross compiling, can't use AC_RUN_IFELSE so do these tests.
        !           169:     # The AC_PREPROC_IFELSE confirms that db.h is preprocessable,
        !           170:     # and extracts the version number from it.
        !           171:     AC_MSG_CHECKING([for db.h])
        !           172: 
        !           173:     AS_VAR_PUSHDEF([HEADER_VERSION],[ax_path_bdb_no_options_HEADER_VERSION])dnl
        !           174:     HEADER_VERSION=''
        !           175:     AC_PREPROC_IFELSE([
        !           176:       AC_LANG_SOURCE([[
        !           177: #include <db.h>
        !           178: AX_PATH_BDB_STUFF DB_VERSION_MAJOR,DB_VERSION_MINOR,DB_VERSION_PATCH
        !           179:       ]])
        !           180:     ],[
        !           181:       # Extract version from preprocessor output.
        !           182:       HEADER_VERSION=`eval "$ac_cpp conftest.$ac_ext" 2> /dev/null \
        !           183:         | grep AX_PATH_BDB_STUFF | sed 's/[[^0-9,]]//g;s/,/./g;1q'`
        !           184:     ],[])
        !           185: 
        !           186:     if test "x$HEADER_VERSION" = "x" ; then
        !           187:       AC_MSG_RESULT([no])
        !           188:     else
        !           189:       AC_MSG_RESULT([$HEADER_VERSION])
        !           190: 
        !           191:       # Check that version is high enough.
        !           192:       AX_COMPARE_VERSION([$HEADER_VERSION],[ge],[$1],[
        !           193:         # get major and minor version numbers
        !           194:         AS_VAR_PUSHDEF([MAJ],[ax_path_bdb_no_options_MAJOR])dnl
        !           195:         MAJ=`echo $HEADER_VERSION | sed 's,\..*,,'`
        !           196:         AS_VAR_PUSHDEF([MIN],[ax_path_bdb_no_options_MINOR])dnl
        !           197:         MIN=`echo $HEADER_VERSION | sed 's,^[[0-9]]*\.,,;s,\.[[0-9]]*$,,'`
        !           198: 
        !           199:        dnl # Save LIBS.
        !           200:        ax_path_bdb_no_options_save_LIBS="$LIBS"
        !           201: 
        !           202:         # Check that we can link with the library.
        !           203:         AC_SEARCH_LIBS([db_version],
        !           204:           [db db-$MAJ.$MIN db$MAJ.$MIN db$MAJ$MIN db-$MAJ db$MAJ],[
        !           205:             # Successfully found library.
        !           206:             ax_path_bdb_no_options_ok=yes
        !           207:             BDB_VERSION=$HEADER_VERSION
        !           208: 
        !           209:            # Extract library from LIBS
        !           210:            ax_path_bdb_no_options_LEN=` \
        !           211:               echo "x$ax_path_bdb_no_options_save_LIBS" \
        !           212:               | awk '{print(length)}'`
        !           213:             BDB_LIBS=`echo "x$LIBS " \
        !           214:               | sed "s/.\{$ax_path_bdb_no_options_LEN\}\$//;s/^x//;s/ //g"`
        !           215:         ],[])
        !           216: 
        !           217:         dnl # Restore LIBS
        !           218:        LIBS="$ax_path_bdb_no_options_save_LIBS"
        !           219: 
        !           220:         AS_VAR_POPDEF([MAJ])dnl
        !           221:         AS_VAR_POPDEF([MIN])dnl
        !           222:       ])
        !           223:     fi
        !           224: 
        !           225:     AS_VAR_POPDEF([HEADER_VERSION])dnl
        !           226:   else
        !           227:     # Not cross compiling.
        !           228:     # Check version of Berkeley DB in the current environment.
        !           229:     AX_PATH_BDB_ENV_GET_VERSION([
        !           230:       AX_COMPARE_VERSION([$ax_path_bdb_env_get_version_VERSION],[ge],[$1],[
        !           231:         # Found acceptable version in current environment.
        !           232:         ax_path_bdb_no_options_ok=yes
        !           233:         BDB_VERSION="$ax_path_bdb_env_get_version_VERSION"
        !           234:         BDB_LIBS="$ax_path_bdb_env_get_version_LIBS"
        !           235:       ])
        !           236:     ])
        !           237: 
        !           238:     # Determine if we need to search /usr/local/BerkeleyDB*
        !           239:     ax_path_bdb_no_options_DONE=no
        !           240:     if test "x$2" = "xENVONLY" ; then
        !           241:       ax_path_bdb_no_options_DONE=yes
        !           242:     elif test "x$2" = "xENVFIRST" ; then
        !           243:       ax_path_bdb_no_options_DONE=$ax_path_bdb_no_options_ok
        !           244:     fi
        !           245: 
        !           246:     if test "$ax_path_bdb_no_options_DONE" = "no" ; then
        !           247:       # Check for highest in /usr/local/BerkeleyDB*
        !           248:       AX_PATH_BDB_PATH_FIND_HIGHEST([
        !           249:         if test "$ax_path_bdb_no_options_ok" = "yes" ; then
        !           250:         # If we already have an acceptable version use this if higher.
        !           251:           AX_COMPARE_VERSION(
        !           252:              [$ax_path_bdb_path_find_highest_VERSION],[gt],[$BDB_VERSION])
        !           253:         else
        !           254:           # Since we didn't have an acceptable version check if this one is.
        !           255:           AX_COMPARE_VERSION(
        !           256:              [$ax_path_bdb_path_find_highest_VERSION],[ge],[$1])
        !           257:         fi
        !           258:       ])
        !           259: 
        !           260:       dnl # If result from _AX_COMPARE_VERSION is true we want this version.
        !           261:       if test "$ax_compare_version" = "true" ; then
        !           262:         ax_path_bdb_no_options_ok=yes
        !           263:         BDB_LIBS="-ldb"
        !           264:        if test "x$ax_path_bdb_path_find_highest_DIR" != x ; then
        !           265:          BDB_CPPFLAGS="-I$ax_path_bdb_path_find_highest_DIR/include"
        !           266:          BDB_LDFLAGS="-L$ax_path_bdb_path_find_highest_DIR/lib"
        !           267:        fi
        !           268:         BDB_VERSION="$ax_path_bdb_path_find_highest_VERSION"
        !           269:       fi
        !           270:     fi
        !           271:   fi
        !           272: 
        !           273:   dnl # Execute ACTION-IF-FOUND / ACTION-IF-NOT-FOUND.
        !           274:   if test "$ax_path_bdb_no_options_ok" = "yes" ; then
        !           275:     AC_MSG_NOTICE([using Berkeley DB version $BDB_VERSION])
        !           276:     AC_DEFINE([HAVE_DB_H],[1],
        !           277:               [Define to 1 if you have the <db.h> header file.])
        !           278:     m4_ifvaln([$3],[$3])dnl
        !           279:   else
        !           280:     AC_MSG_NOTICE([no Berkeley DB version $1 or higher found])
        !           281:     m4_ifvaln([$4],[$4])dnl
        !           282:   fi
        !           283: ]) dnl AX_PATH_BDB_NO_OPTIONS
        !           284: 
        !           285: dnl #########################################################################
        !           286: dnl Check the default installation directory for Berkeley DB which is
        !           287: dnl of the form /usr/local/BerkeleyDB* for the highest version.
        !           288: dnl
        !           289: dnl Result: sets ax_path_bdb_path_find_highest_ok to yes or no,
        !           290: dnl         sets ax_path_bdb_path_find_highest_VERSION to version,
        !           291: dnl         sets ax_path_bdb_path_find_highest_DIR to directory.
        !           292: dnl
        !           293: dnl AX_PATH_BDB_PATH_FIND_HIGHEST([ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
        !           294: AC_DEFUN([AX_PATH_BDB_PATH_FIND_HIGHEST], [
        !           295:   dnl # Used to indicate success or failure of this function.
        !           296:   ax_path_bdb_path_find_highest_ok=no
        !           297: 
        !           298:   AS_VAR_PUSHDEF([VERSION],[ax_path_bdb_path_find_highest_VERSION])dnl
        !           299:   VERSION=''
        !           300: 
        !           301:   ax_path_bdb_path_find_highest_DIR=''
        !           302: 
        !           303:   # find highest version in default install directory for Berkeley DB
        !           304:   AS_VAR_PUSHDEF([CURDIR],[ax_path_bdb_path_find_highest_CURDIR])dnl
        !           305:   AS_VAR_PUSHDEF([CUR_VERSION],[ax_path_bdb_path_get_version_VERSION])dnl
        !           306: 
        !           307:   for CURDIR in `ls -d /usr/local/BerkeleyDB* 2> /dev/null`
        !           308:   do
        !           309:     AX_PATH_BDB_PATH_GET_VERSION([$CURDIR],[
        !           310:       AX_COMPARE_VERSION([$CUR_VERSION],[gt],[$VERSION],[
        !           311:         ax_path_bdb_path_find_highest_ok=yes
        !           312:         ax_path_bdb_path_find_highest_DIR="$CURDIR"
        !           313:         VERSION="$CUR_VERSION"
        !           314:       ])
        !           315:     ])
        !           316:   done
        !           317: 
        !           318:   AS_VAR_POPDEF([VERSION])dnl
        !           319:   AS_VAR_POPDEF([CUR_VERSION])dnl
        !           320:   AS_VAR_POPDEF([CURDIR])dnl
        !           321: 
        !           322:   dnl # Execute ACTION-IF-FOUND / ACTION-IF-NOT-FOUND.
        !           323:   if test "$ax_path_bdb_path_find_highest_ok" = "yes" ; then
        !           324:     m4_ifvaln([$1],[$1],[:])dnl
        !           325:     m4_ifvaln([$2],[else $2])dnl
        !           326:   fi
        !           327: 
        !           328: ]) dnl AX_PATH_BDB_PATH_FIND_HIGHEST
        !           329: 
        !           330: dnl #########################################################################
        !           331: dnl Checks for Berkeley DB in specified directory's lib and include
        !           332: dnl subdirectories.
        !           333: dnl
        !           334: dnl Result: sets ax_path_bdb_path_get_version_ok to yes or no,
        !           335: dnl         sets ax_path_bdb_path_get_version_VERSION to version.
        !           336: dnl
        !           337: dnl AX_PATH_BDB_PATH_GET_VERSION(BDB-DIR, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
        !           338: AC_DEFUN([AX_PATH_BDB_PATH_GET_VERSION], [
        !           339:   dnl # Used to indicate success or failure of this function.
        !           340:   ax_path_bdb_path_get_version_ok=no
        !           341: 
        !           342:   # Indicate status of checking for Berkeley DB header.
        !           343:   AC_MSG_CHECKING([in $1/include for db.h])
        !           344:   ax_path_bdb_path_get_version_got_header=no
        !           345:   test -f "$1/include/db.h" && ax_path_bdb_path_get_version_got_header=yes
        !           346:   AC_MSG_RESULT([$ax_path_bdb_path_get_version_got_header])
        !           347: 
        !           348:   # Indicate status of checking for Berkeley DB library.
        !           349:   AC_MSG_CHECKING([in $1/lib for library -ldb])
        !           350: 
        !           351:   ax_path_bdb_path_get_version_VERSION=''
        !           352: 
        !           353:   if test -d "$1/include" && test -d "$1/lib" &&
        !           354:      test "$ax_path_bdb_path_get_version_got_header" = "yes" ; then
        !           355:     dnl # save and modify environment
        !           356:     ax_path_bdb_path_get_version_save_CPPFLAGS="$CPPFLAGS"
        !           357:     CPPFLAGS="-I$1/include $CPPFLAGS"
        !           358: 
        !           359:     ax_path_bdb_path_get_version_save_LIBS="$LIBS"
        !           360:     LIBS="$LIBS -ldb"
        !           361: 
        !           362:     ax_path_bdb_path_get_version_save_LDFLAGS="$LDFLAGS"
        !           363:     LDFLAGS="-L$1/lib $LDFLAGS"
        !           364: 
        !           365:     # Compile and run a program that compares the version defined in
        !           366:     # the header file with a version defined in the library function
        !           367:     # db_version.
        !           368:     AC_RUN_IFELSE([
        !           369:       AC_LANG_SOURCE([[
        !           370: #include <stdio.h>
        !           371: #include <db.h>
        !           372: int main(int argc,char **argv)
        !           373: {
        !           374:   int major,minor,patch;
        !           375:   (void) argv;
        !           376:   db_version(&major,&minor,&patch);
        !           377:   if (argc > 1)
        !           378:     printf("%d.%d.%d\n",DB_VERSION_MAJOR,DB_VERSION_MINOR,DB_VERSION_PATCH);
        !           379:   if (DB_VERSION_MAJOR == major && DB_VERSION_MINOR == minor &&
        !           380:       DB_VERSION_PATCH == patch)
        !           381:     return 0;
        !           382:   else
        !           383:     return 1;
        !           384: }
        !           385:       ]])
        !           386:     ],[
        !           387:       # Program compiled and ran, so get version by adding argument.
        !           388:       ax_path_bdb_path_get_version_VERSION=`./conftest$ac_exeext x`
        !           389:       ax_path_bdb_path_get_version_ok=yes
        !           390:     ],[],[])
        !           391: 
        !           392:     dnl # restore environment
        !           393:     CPPFLAGS="$ax_path_bdb_path_get_version_save_CPPFLAGS"
        !           394:     LIBS="$ax_path_bdb_path_get_version_save_LIBS"
        !           395:     LDFLAGS="$ax_path_bdb_path_get_version_save_LDFLAGS"
        !           396:   fi
        !           397: 
        !           398:   dnl # Finally, execute ACTION-IF-FOUND / ACTION-IF-NOT-FOUND.
        !           399:   if test "$ax_path_bdb_path_get_version_ok" = "yes" ; then
        !           400:     AC_MSG_RESULT([$ax_path_bdb_path_get_version_VERSION])
        !           401:     m4_ifvaln([$2],[$2])dnl
        !           402:   else
        !           403:     AC_MSG_RESULT([no])
        !           404:     m4_ifvaln([$3],[$3])dnl
        !           405:   fi
        !           406: ]) dnl AX_PATH_BDB_PATH_GET_VERSION
        !           407: 
        !           408: #############################################################################
        !           409: dnl Checks if version of library and header match specified version.
        !           410: dnl Only meant to be used by AX_PATH_BDB_ENV_GET_VERSION macro.
        !           411: dnl
        !           412: dnl Requires AX_COMPARE_VERSION macro.
        !           413: dnl
        !           414: dnl Result: sets ax_path_bdb_env_confirm_lib_ok to yes or no.
        !           415: dnl
        !           416: dnl AX_PATH_BDB_ENV_CONFIRM_LIB(VERSION, [LIBNAME])
        !           417: AC_DEFUN([AX_PATH_BDB_ENV_CONFIRM_LIB], [
        !           418:   dnl # Used to indicate success or failure of this function.
        !           419:   ax_path_bdb_env_confirm_lib_ok=no
        !           420: 
        !           421:   dnl # save and modify environment to link with library LIBNAME
        !           422:   ax_path_bdb_env_confirm_lib_save_LIBS="$LIBS"
        !           423:   LIBS="$LIBS $2"
        !           424: 
        !           425:   # Compile and run a program that compares the version defined in
        !           426:   # the header file with a version defined in the library function
        !           427:   # db_version.
        !           428:   AC_RUN_IFELSE([
        !           429:     AC_LANG_SOURCE([[
        !           430: #include <stdio.h>
        !           431: #include <db.h>
        !           432: int main(int argc,char **argv)
        !           433: {
        !           434:   int major,minor,patch;
        !           435:   (void) argv;
        !           436:   db_version(&major,&minor,&patch);
        !           437:   if (argc > 1)
        !           438:     printf("%d.%d.%d\n",DB_VERSION_MAJOR,DB_VERSION_MINOR,DB_VERSION_PATCH);
        !           439:   if (DB_VERSION_MAJOR == major && DB_VERSION_MINOR == minor &&
        !           440:       DB_VERSION_PATCH == patch)
        !           441:     return 0;
        !           442:   else
        !           443:     return 1;
        !           444: }
        !           445:     ]])
        !           446:   ],[
        !           447:     # Program compiled and ran, so get version by giving an argument,
        !           448:     # which will tell the program to print the output.
        !           449:     ax_path_bdb_env_confirm_lib_VERSION=`./conftest$ac_exeext x`
        !           450: 
        !           451:     # If the versions all match up, indicate success.
        !           452:     AX_COMPARE_VERSION([$ax_path_bdb_env_confirm_lib_VERSION],[eq],[$1],[
        !           453:       ax_path_bdb_env_confirm_lib_ok=yes
        !           454:     ])
        !           455:   ],[],[])
        !           456: 
        !           457:   dnl # restore environment
        !           458:   LIBS="$ax_path_bdb_env_confirm_lib_save_LIBS"
        !           459: 
        !           460: ]) dnl AX_PATH_BDB_ENV_CONFIRM_LIB
        !           461: 
        !           462: #############################################################################
        !           463: dnl Finds the version and library name for Berkeley DB in the
        !           464: dnl current environment.  Tries many different names for library.
        !           465: dnl
        !           466: dnl Requires AX_PATH_BDB_ENV_CONFIRM_LIB macro.
        !           467: dnl
        !           468: dnl Result: set ax_path_bdb_env_get_version_ok to yes or no,
        !           469: dnl         set ax_path_bdb_env_get_version_VERSION to the version found,
        !           470: dnl         and ax_path_bdb_env_get_version_LIBNAME to the library name.
        !           471: dnl
        !           472: dnl AX_PATH_BDB_ENV_GET_VERSION([ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
        !           473: AC_DEFUN([AX_PATH_BDB_ENV_GET_VERSION], [
        !           474:   dnl # Used to indicate success or failure of this function.
        !           475:   ax_path_bdb_env_get_version_ok=no
        !           476: 
        !           477:   ax_path_bdb_env_get_version_VERSION=''
        !           478:   ax_path_bdb_env_get_version_LIBS=''
        !           479: 
        !           480:   AS_VAR_PUSHDEF([HEADER_VERSION],[ax_path_bdb_env_get_version_HEADER_VERSION])dnl
        !           481:   AS_VAR_PUSHDEF([TEST_LIBNAME],[ax_path_bdb_env_get_version_TEST_LIBNAME])dnl
        !           482: 
        !           483:   # Indicate status of checking for Berkeley DB library.
        !           484:   AC_MSG_CHECKING([for db.h])
        !           485: 
        !           486:   # Compile and run a program that determines the Berkeley DB version
        !           487:   # in the header file db.h.
        !           488:   HEADER_VERSION=''
        !           489:   AC_RUN_IFELSE([
        !           490:     AC_LANG_SOURCE([[
        !           491: #include <stdio.h>
        !           492: #include <db.h>
        !           493: int main(int argc,char **argv)
        !           494: {
        !           495:   (void) argv;
        !           496:   if (argc > 1)
        !           497:     printf("%d.%d.%d\n",DB_VERSION_MAJOR,DB_VERSION_MINOR,DB_VERSION_PATCH);
        !           498:   return 0;
        !           499: }
        !           500:     ]])
        !           501:   ],[
        !           502:     # Program compiled and ran, so get version by adding an argument.
        !           503:     HEADER_VERSION=`./conftest$ac_exeext x`
        !           504:     AC_MSG_RESULT([$HEADER_VERSION])
        !           505:   ],[AC_MSG_RESULT([no])],[AC_MSG_RESULT([no])])
        !           506: 
        !           507:   # Have header version, so try to find corresponding library.
        !           508:   # Looks for library names in the order:
        !           509:   #   nothing, db, db-X.Y, dbX.Y, dbXY, db-X, dbX
        !           510:   # and stops when it finds the first one that matches the version
        !           511:   # of the header file.
        !           512:   if test "x$HEADER_VERSION" != "x" ; then
        !           513:     AC_MSG_CHECKING([for library containing Berkeley DB $HEADER_VERSION])
        !           514: 
        !           515:     AS_VAR_PUSHDEF([MAJOR],[ax_path_bdb_env_get_version_MAJOR])dnl
        !           516:     AS_VAR_PUSHDEF([MINOR],[ax_path_bdb_env_get_version_MINOR])dnl
        !           517: 
        !           518:     # get major and minor version numbers
        !           519:     MAJOR=`echo $HEADER_VERSION | sed 's,\..*,,'`
        !           520:     MINOR=`echo $HEADER_VERSION | sed 's,^[[0-9]]*\.,,;s,\.[[0-9]]*$,,'`
        !           521: 
        !           522:     # see if it is already specified in LIBS
        !           523:     TEST_LIBNAME=''
        !           524:     AX_PATH_BDB_ENV_CONFIRM_LIB([$HEADER_VERSION], [$TEST_LIBNAME])
        !           525: 
        !           526:     if test "$ax_path_bdb_env_confirm_lib_ok" = "no" ; then
        !           527:       # try format "db"
        !           528:       TEST_LIBNAME='-ldb'
        !           529:       AX_PATH_BDB_ENV_CONFIRM_LIB([$HEADER_VERSION], [$TEST_LIBNAME])
        !           530:     fi
        !           531: 
        !           532:     if test "$ax_path_bdb_env_confirm_lib_ok" = "no" ; then
        !           533:       # try format "db-X.Y"
        !           534:       TEST_LIBNAME="-ldb-${MAJOR}.$MINOR"
        !           535:       AX_PATH_BDB_ENV_CONFIRM_LIB([$HEADER_VERSION], [$TEST_LIBNAME])
        !           536:     fi
        !           537: 
        !           538:     if test "$ax_path_bdb_env_confirm_lib_ok" = "no" ; then
        !           539:       # try format "dbX.Y"
        !           540:       TEST_LIBNAME="-ldb${MAJOR}.$MINOR"
        !           541:       AX_PATH_BDB_ENV_CONFIRM_LIB([$HEADER_VERSION], [$TEST_LIBNAME])
        !           542:     fi
        !           543: 
        !           544:     if test "$ax_path_bdb_env_confirm_lib_ok" = "no" ; then
        !           545:       # try format "dbXY"
        !           546:       TEST_LIBNAME="-ldb$MAJOR$MINOR"
        !           547:       AX_PATH_BDB_ENV_CONFIRM_LIB([$HEADER_VERSION], [$TEST_LIBNAME])
        !           548:     fi
        !           549: 
        !           550:     if test "$ax_path_bdb_env_confirm_lib_ok" = "no" ; then
        !           551:       # try format "db-X"
        !           552:       TEST_LIBNAME="-ldb-$MAJOR"
        !           553:       AX_PATH_BDB_ENV_CONFIRM_LIB([$HEADER_VERSION], [$TEST_LIBNAME])
        !           554:     fi
        !           555: 
        !           556:     if test "$ax_path_bdb_env_confirm_lib_ok" = "no" ; then
        !           557:       # try format "dbX"
        !           558:       TEST_LIBNAME="-ldb$MAJOR"
        !           559:       AX_PATH_BDB_ENV_CONFIRM_LIB([$HEADER_VERSION], [$TEST_LIBNAME])
        !           560:     fi
        !           561: 
        !           562:     dnl # Found a valid library.
        !           563:     if test "$ax_path_bdb_env_confirm_lib_ok" = "yes" ; then
        !           564:       if test "x$TEST_LIBNAME" = "x" ; then
        !           565:         AC_MSG_RESULT([none required])
        !           566:       else
        !           567:         AC_MSG_RESULT([$TEST_LIBNAME])
        !           568:       fi
        !           569:       ax_path_bdb_env_get_version_VERSION="$HEADER_VERSION"
        !           570:       ax_path_bdb_env_get_version_LIBS="$TEST_LIBNAME"
        !           571:       ax_path_bdb_env_get_version_ok=yes
        !           572:     else
        !           573:       AC_MSG_RESULT([no])
        !           574:     fi
        !           575: 
        !           576:     AS_VAR_POPDEF([MAJOR])dnl
        !           577:     AS_VAR_POPDEF([MINOR])dnl
        !           578:   fi
        !           579: 
        !           580:   AS_VAR_POPDEF([HEADER_VERSION])dnl
        !           581:   AS_VAR_POPDEF([TEST_LIBNAME])dnl
        !           582: 
        !           583:   dnl # Execute ACTION-IF-FOUND / ACTION-IF-NOT-FOUND.
        !           584:   if test "$ax_path_bdb_env_confirm_lib_ok" = "yes" ; then
        !           585:     m4_ifvaln([$1],[$1],[:])dnl
        !           586:     m4_ifvaln([$2],[else $2])dnl
        !           587:   fi
        !           588: 
        !           589: ]) dnl BDB_ENV_GET_VERSION
        !           590: 
        !           591: #############################################################################

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