Beyond Linux® From Scratch (System V Edition) - Version r12.4-1338

Chapter 22. Databases

lmdb-0.9.35

Introduction to lmdb

The lmdb package is a fast, compact, key-value embedded data store. It uses memory-mapped files, so it has the read performance of a pure in-memory database while still offering the persistence of standard disk-based databases, and is only limited to the size of the virtual address space

[Note]

Note

This version of BLFS may not build or run some packages properly if LFS or dependencies have been updated since the most recent stable version of the System V books.

Package Information

Installation of lmdb

Install lmdb by running the following commands: 

cd libraries/liblmdb &&
make                 &&
sed -i 's| liblmdb.a||' Makefile

This package does not come with a test suite.

Now, as the root user: 

make prefix=/usr install

Command Explanations

sed ... liblmdb.a ... Makefile: The package executables use a static library so it must be created. This command suppresses installation of the static library.

Contents

Installed Program: mdb_copy, mdb_dump, mdb_load, and mdb_stat
Installed Library: liblmdb.so
Installed Directories: None

Short Descriptions

mdb_copy

copies an LMDB environment from one database to another, including the option to compact the database

mdb_dump

reads a database and writes its contents to standard output using a portable flat-text format, which can be interpreted by mdb_load

mdb_load

imports a database from standard input or from a file

mdb_stat

displays the status of a LMDB environment

liblmdb.so

provides functions for accessing a LMDB database