Introduction to MySQL

MySQL is a widely used and fast SQL database server. It is a client/server implementation that consists of a server daemon and many different client programs and libraries.

There may be a more recent release available from the MySQL home page. You can check and probably use the existing BLFS instructions. Note that versions other than the one shown in the download URLs have not been tested in a BLFS environment.

Package Information

MySQL Dependencies


OpenSSL-0.9.8g and TCP Wrapper-7.6

User Notes:

Installation of MySQL

For security reasons, running the server as an unprivileged user and group is strongly encouraged:

groupadd -g 40 mysql &&
useradd -c "MySQL Server" -d /dev/null -g mysql -s /bin/false \
        -u 40 mysql

Build and install MySQL by running the following commands:

C_EXTRA_FLAGS=-fno-strict-aliasing \
./configure --prefix=/usr \
            --sysconfdir=/etc \
            --libexecdir=/usr/sbin \
            --localstatedir=/srv/mysql \
            --enable-thread-safe-client \
            --enable-assembler \
            --enable-local-infile \
            --with-unix-socket-path=/var/run/mysql/mysql.sock \
            --without-debug \
            --without-bench \
            --without-readline \
            --with-berkeley-db \
            --with-extra-charsets=all &&
make testdir=/tmp/mysql

To test the results, issue: make test. Note that if you have a restrictive /etc/hosts.deny file, you will need to add an appropriate entry to the /etc/hosts.allow file for the mysqld daemon, else many of the tests will fail.

Now, as the root user:

make testdir=/tmp/mysql install &&
rm -rf /tmp/mysql &&
cd /usr/lib &&
ln -v -sf mysql/libmysqlclient{,_r}.so* .


The only documentation shipped in the source tarball are and manual.chm (Microsoft Help format) files. You can download various formats of the MySQL Reference Manual from

Command Explanations

C_EXTRA_FLAGS=-fno-strict-aliasing: This environment variable adjusts the compiler optimization to avoid failures in the testsuite and other operations.

--libexecdir=/usr/sbin: This switch installs the mysqld daemon and the mysqlmanager program in an appropriate location.

--localstatedir=/srv/mysql: This switch forces MySQL to use /srv/mysql for database files and other variable data.

--enable-thread-safe-client: This switch compiles a thread-safe MySQL client library.

--enable-assembler: This switch allows using assembler versions of some string functions.

--enable-local-infile: This switch enables the “LOAD DATA INFILE” SQL statement.

--with-unix-socket-path=/var/run/mysql: This switch puts the unix-domain socket into the /var/run/mysql directory instead of the default /tmp.

--without-bench: This switch skips building the benchmark suite.

--without-readline: This switch forces the build to use the system copy of readline instead of the bundled copy.

--with-berkeley-db: This switch enables using Berkeley DB tables as a back end.

--with-extra-charsets=all: This switch enables international character sets within the suite.

make testdir=...: This installs the test suite in /tmp/mysql. The test suite is not required, nor does it function properly on an installed version of MySQL, so it is removed in the next step.

ln -v -sf mysql/libmysqlclient{,_r}.so* .: This command makes the MySQL shared libraries available to other packages at run-time.

--with-openssl: This switch adds OpenSSL support to MySQL.

--with-libwrap: This switch adds tcpwrappers support to MySQL.

Configuring MySQL

Config Files

/etc/my.cnf and ~/.my.cnf

Configuration Information

There are several default configuration files available in /usr/share/mysql which you can use. Create /etc/my.cnf using the following command as the root user:

install -v -m644 /usr/share/mysql/my-medium.cnf /etc/my.cnf

You can now install a database and change the ownership to the unprivileged user and group (perform as the root user):

mysql_install_db --user=mysql &&
chgrp -v mysql /srv/mysql{,/test,/mysql}

Further configuration requires that the MySQL server is running. Start the server using the following commands as the root user:

install -v -m755 -o mysql -g mysql -d /var/run/mysql &&
mysqld_safe --user=mysql 2>&1 >/dev/null &

A default installation does not set up a password for the administrator, so use the following command as the root user to set one. Replace <new-password> with your own.

mysqladmin -u root password <new-password>

Configuration of the server is now finished. Shut the server down using the following command as the root user:

mysqladmin -p shutdown

Boot Script

Install the /etc/rc.d/init.d/mysql init script included in the blfs-bootscripts-20080816 package as the root user to start the MySQL server during system boot-up.

make install-mysql


Installed Programs: comp_err, innochecksum, msql2mysql, my_print_defaults, myisam_ftdump, myisamchk, myisamlog, myisampack, mysql, mysql_client_test, mysql_config, mysql_convert_table_format, mysql_create_system_tables, mysql_explain_log, mysql_find_rows, mysql_fix_extensions, mysql_fix_privilege_tables, mysql_install_db, mysql_secure_installation, mysql_setpermission, mysql_tableinfo, mysql_tzinfo_to_sql, mysql_waitpid, mysql_zap, mysqlaccess, mysqladmin, mysqlbinlog, mysqlbug, mysqlcheck, mysqld, mysqld_multi, mysqld_safe, mysqldump, mysqldumpslow, mysqlhotcopy, mysqlimport, mysqlmanager, mysqlshow, mysqltest, mysqltestmanager, mysqltestmanager-pwgen, mysqltestmanagerc, perror, replace, resolve_stack_dump, and resolveip
Installed Libraries: libdbug.a, libheap.a, libmyisam.a, libmyisammrg.a, libmysqlclient.{so,a}, libmysqlclient_r.{so,a}, libmystrings.a, libmysys.a, and libvio.a
Installed Directories: /srv/mysql, /usr/include/mysql, /usr/lib/mysql, /usr/share/mysql, and /var/run/mysql

Short Descriptions

Descriptions of all the programs and libraries would be several pages long. Instead, consult the documentation or the on-line reference manual at

The Perl DBI modules must be installed for some of the MySQL support programs to function properly.

Last updated on 2008-05-10 18:53:20 -0500