BerkeleyDB Version 0.19 5th June 2002 Copyright (c) 1997-2002 Paul Marquess. All rights reserved. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. DESCRIPTION ----------- BerkeleyDB is a module which allows Perl programs to make use of the facilities provided by Berkeley DB version 2 or greater. (Note: if you want to use version 1 of Berkeley DB with Perl you need the DB_File module). Berkeley DB is a C library which provides a consistent interface to a number of database formats. BerkeleyDB provides an interface to all four of the database types (hash, btree, queue and recno) currently supported by Berkeley DB. For further details see the documentation in the file BerkeleyDB.pod. PREREQUISITES ------------- Before you can build BerkeleyDB you need to have the following installed on your system: * Perl 5.004_04 or greater. * Berkeley DB Version 2.6.4 or greater The official web site for Berkeley DB is http://www.sleepycat.com The latest version of Berkeley DB is always available there. It is recommended that you use the most recent version available at the Sleepycat site. The one exception to this advice is where you want to use BerkeleyDB to access database files created by a third-party application, like Sendmail. In these cases you must build BerkeleyDB with a compatible version of Berkeley DB. BUILDING THE MODULE ------------------- Assuming you have met all the prerequisites, building the module should be relatively straightforward. Step 1 : If you are running Solaris 2.5, 2.7 or HP-UX 10 read either the Solaris Notes or HP-UX Notes sections below. If you are running Linux please read the Linux Notes section before proceeding. Step 2 : Edit the file config.in to suit you local installation. Instructions are given in the file. Step 3 : Build and test the module using this sequence of commands: perl Makefile.PL make make test INSTALLATION ------------ make install TROUBLESHOOTING =============== Here are some of the problems that people encounter when building BerkeleyDB. Missing db.h or libdb.a ----------------------- If you get an error like this: cc -c -I./libraries/ -Dbool=char -DHAS_BOOL -I/usr/local/include -O2 -DVERSION=\"0.07\" -DXS_VERSION=\"0.07\" -fpic -I/usr/local/lib/perl5/5.00503/i586-linux/CORE BerkeleyDB.c BerkeleyDB.xs:52: db.h: No such file or directory or this: cc -c -I./libraries/2.7.5 -Dbool=char -DHAS_BOOL -I/usr/local/include -O2 -DVERSION=\"0.07\" -DXS_VERSION=\"0.07\" -fpic -I/usr/local/lib/perl5/5.00503/i586-linux/CORE BerkeleyDB.c LD_RUN_PATH="/lib" cc -o blib/arch/auto/BerkeleyDB/BerkeleyDB.so -shared -L/usr/local/lib BerkeleyDB.o -L/home/paul/perl/ext/BerkDB/BerkeleyDB/libraries -ldb ld: cannot open -ldb: No such file or directory This symptom can imply: 1. You don't have Berkeley DB installed on your system at all. Solution: get & install Berkeley DB. 2. You do have Berkeley DB installed, but it isn't in a standard place. Solution: Edit config.in and set the LIB and INCLUDE variables to point to the directories where libdb.a and db.h are installed. #error db.h is not for Berkeley DB at all. ------------------------------------------ If you get the error above when building this module it means that there is a file called "db.h" on your system that isn't the one that comes with Berkeley DB. Options: 1. You don't have Berkeley DB installed on your system at all. Solution: get & install Berkeley DB. 2. Edit config.in and make sure the INCLUDE variable points to the directory where the Berkeley DB file db.h is installed. 3. If option 2 doesn't work, try tempoarily renaming the db.h file that is causing the error. #error db.h is for Berkeley DB 1.x - need at least Berkeley DB 2.6.4 -------------------------------------------------------------------- The error above will occur if there is a copy of the Berkeley DB 1.x file db.h on your system. This error will happen when 1. you only have Berkeley DB version 1 on your system. Solution: get & install a newer version of Berkeley DB. 2. you have both version 1 and a later version of Berkeley DB installed on your system. When building BerkeleyDB it attempts to use the db.h for Berkeley DB version 1. Solution: Edit config.in and set the LIB and INCLUDE variables to point to the directories where libdb.a and db.h are installed. #error db.h is for Berkeley DB 2.0-2.5 - need at least Berkeley DB 2.6.4 ------------------------------------------------------------------------ The error above will occur if there is a copy of the the file db.h for Berkeley DB 2.0 to 2.5 on your system. This symptom can imply: 1. You don't have a new enough version of Berkeley DB. Solution: get & install a newer version of Berkeley DB. 2. You have the correct version of Berkeley DB installed, but it isn't in a standard place. Solution: Edit config.in and set the LIB and INCLUDE variables to point to the directories where libdb.a and db.h are installed. Undefined Symbol: txn_stat -------------------------- BerkeleyDB seems to have built correctly, but you get an error like this when you run the test harness: $ make test PERL_DL_NONLAZY=1 /home/paul/perl/install/bin/perl5.00503 -Iblib/arch -Iblib/lib -I/usr/local/lib/perl5/5.00503/i586-linux -I/usr/local/lib/perl5/5.00503 -e 'use Test::Harness qw(&runtests $verbose); $verbose=0; runtests @ARGV;' t/*.t t/btree.............Can't load 'blib/arch/auto/BerkeleyDB/BerkeleyDB.so' for module BerkeleyDB: blib/arch/auto/BerkeleyDB/BerkeleyDB.so: undefined symbol: txn_stat at /usr/local/lib/perl5/5.00503/i586-linux/DynaLoader.pm line 169. ... This error usually happens when you have both version 1 and a newer version of Berkeley DB installed on your system. BerkeleyDB attempts to build using the db.h for Berkeley DB version 2/3/4 and the version 1 library. Unfortunately the two versions aren't compatible with each other. BerkeleyDB can only be built with Berkeley DB version 2, 3 or 4. Solution: Setting the LIB & INCLUDE variables in config.in to point to the correct directories can sometimes be enough to fix this problem. If that doesn't work the easiest way to fix the problem is to either delete or temporarily rename the copies of db.h and libdb.a that you don't want BerkeleyDB to use. Undefined Symbol: db_appinit ---------------------------- BerkeleyDB seems to have built correctly, but you get an error like this when you run the test harness: $ make test PERL_DL_NONLAZY=1 /home/paul/perl/install/bin/perl5.00561 -Iblib/arch -Iblib/lib -I/home/paul/perl/install/5.005_61/lib/5.00561/i586-linux -I/home/paul/perl/install/5.005_61/lib/5.00561 -e 'use Test::Harness qw(&runtests $verbose); $verbose=0; runtests @ARGV;' t/*.t t/btree.............Can't load 'blib/arch/auto/BerkeleyDB/BerkeleyDB.so' for module BerkeleyDB: blib/arch/auto/BerkeleyDB/BerkeleyDB.so: undefined symbol: db_appinit at /home/paul/perl/install/5.005_61/lib/5.00561/i586-linux/DynaLoader.pm ... This error usually happens when you have both version 2 and version 3 of Berkeley DB installed on your system and BerkeleyDB attempts to build using the db.h for Berkeley DB version 2 and the version 3 library. Unfortunately the two versions aren't compatible with each other. Solution: Setting the LIB & INCLUDE variables in config.in to point to the correct directories can sometimes be enough to fix this problem. If that doesn't work the easiest way to fix the problem is to either delete or temporarily rename the copies of db.h and libdb.a that you don't want BerkeleyDB to use. Undefined Symbol: db_create --------------------------- BerkeleyDB seems to have built correctly, but you get an error like this when you run the test harness: $ make test PERL_DL_NONLAZY=1 /home/paul/perl/install/bin/perl5.00561 -Iblib/arch -Iblib/lib -I/home/paul/perl/install/5.005_61/lib/5.00561/i586-linux -I/home/paul/perl/install/5.005_61/lib/5.00561 -e 'use Test::Harness qw(&runtests $verbose); $verbose=0; runtests @ARGV;' t/*.t t/btree.............Can't load 'blib/arch/auto/BerkeleyDB/BerkeleyDB.so' for module BerkeleyDB: blib/arch/auto/BerkeleyDB/BerkeleyDB.so: undefined symbol: db_create at /home/paul/perl/install/5.005_61/lib/5.00561/i586-linux/DynaLoader.pm ... This error usually happens when you have both version 2 and version 3 of Berkeley DB installed on your system and BerkeleyDB attempts to build using the db.h for Berkeley DB version 3 and the version 2 library. Unfortunately the two versions aren't compatible with each other. Solution: Setting the LIB & INCLUDE variables in config.in to point to the correct directories can sometimes be enough to fix this problem. If that doesn't work the easiest way to fix the problem is to either delete or temporarily rename the copies of db.h and libdb.a that you don't want BerkeleyDB to use. Incompatible versions of db.h and libdb --------------------------------------- BerkeleyDB seems to have built correctly, but you get an error like this when you run the test harness: $ make test PERL_DL_NONLAZY=1 /home/paul/perl/install/bin/perl5.00503 -Iblib/arch -Iblib/lib -I/usr/local/lib/perl5/5.00503/i586-linux -I/usr/local/lib/perl5/5.00503 -e 'use Test::Harness qw(&runtests $verbose); $verbose=0; runtests @ARGV;' t/*.t t/btree............. BerkeleyDB needs compatible versions of libdb & db.h you have db.h version 2.6.4 and libdb version 2.7.5 BEGIN failed--compilation aborted at t/btree.t line 25. dubious Test returned status 255 (wstat 65280, 0xff00) ... Another variation on the theme of having two versions of Berkeley DB on your system. Solution: Setting the LIB & INCLUDE variables in config.in to point to the correct directories can sometimes be enough to fix this problem. If that doesn't work the easiest way to fix the problem is to either delete or temporarily rename the copies of db.h and libdb.a that you don't want BerkeleyDB to use. If you are running Linux, please read the Linux Notes section below. Linux Notes ----------- Newer versions of Linux (e.g. RedHat 6, SuSe 6) ship with a C library that has version 2.x of Berkeley DB linked into it. This makes it difficult to build this module with anything other than the version of Berkeley DB that shipped with your Linux release. If you do try to use a different version of Berkeley DB you will most likely get the error described in the "Incompatible versions of db.h and libdb" section of this file. To make matters worse, prior to Perl 5.6.1, the perl binary itself *always* included the Berkeley DB library. If you want to use a newer version of Berkeley DB with this module, the easiest solution is to use Perl 5.6.1 (or better) and Berkeley DB 3.x (or better). There are two approaches you can use to get older versions of Perl to work with specific versions of Berkeley DB. Both have their advantages and disadvantages. The first approach will only work when you want to build a version of Perl older than 5.6.1 along with Berkeley DB 3.x. If you want to use Berkeley DB 2.x, you must use the next approach. This approach involves rebuilding your existing version of Perl after applying an unofficial patch. The "patches" directory in the this module's source distribution contains a number of patch files. There is one patch file for every stable version of Perl since 5.004. Apply the appropriate patch to your Perl source tree before re-building and installing Perl from scratch. For example, assuming you are in the top-level source directory for Perl 5.6.0, the command below will apply the necessary patch. Remember to replace the path shown below with one that points to this module's patches directory. patch -p1 -N