AX_LIB_MYSQL([MINIMUM-VERSION])
, 

2006-07-16

Mateusz Loskot <mateusz@loskot.net>

AllPermissive
Copying and distribution of this file, with or without modification, are permitted in any medium without royalty provided the copyright notice and this notice are preserved. Users of this software should generally follow the principles of the MIT License includings its disclaimer.

cryp.to ac-archive's C++ Support (released)

This macro provides tests of availability of MySQL client library of particular version or newer.

AX_LIB_MYSQL macro takes only one argument which is optional. If there is no required version passed, then macro does not run version test.

The --with-mysql option takes one of three possible values:

no - do not check for MySQL client library

yes - do check for MySQL library in standard locations (mysql_config should be in the PATH)

path - complete path to mysql_config utility, use this option if mysql_config can't be found in the PATH

This macro calls:

 AC_SUBST(MYSQL_CFLAGS)
 AC_SUBST(MYSQL_LDFLAGS)
 AC_SUBST(MYSQL_VERSION)

And sets:

 HAVE_MYSQL

AC_DEFUN([AX_LIB_MYSQL],
[
    AC_ARG_WITH([mysql],
        AC_HELP_STRING([--with-mysql=@<:@ARG@:>@],
            [use MySQL client library @<:@default=yes@:>@, optionally specify path to mysql_config]
        ),
        [
        if test "$withval" = "no"; then
            want_mysql="no"
        elif test "$withval" = "yes"; then
            want_mysql="yes"
        else
            want_mysql="yes"
            MYSQL_CONFIG="$withval"
        fi
        ],
        [want_mysql="yes"]
    )

    MYSQL_CFLAGS=""
    MYSQL_LDFLAGS=""
    MYSQL_VERSION=""

    dnl
    dnl Check MySQL libraries (libpq)
    dnl

    if test "$want_mysql" = "yes"; then

        if test -z "$MYSQL_CONFIG" -o test; then
            AC_PATH_PROG([MYSQL_CONFIG], [mysql_config], [no])
        fi

        if test "$MYSQL_CONFIG" != "no"; then
            AC_MSG_CHECKING([for MySQL libraries])

            MYSQL_CFLAGS="`$MYSQL_CONFIG --cflags`"
            MYSQL_LDFLAGS="`$MYSQL_CONFIG --libs`"

            MYSQL_VERSION=`$MYSQL_CONFIG --version`

            AC_DEFINE([HAVE_MYSQL], [1],
                [Define to 1 if MySQL libraries are available])

            found_mysql="yes"
            AC_MSG_RESULT([yes])
        else
            found_mysql="no"
            AC_MSG_RESULT([no])
        fi
    fi

    dnl
    dnl Check if required version of MySQL is available
    dnl


    mysql_version_req=ifelse([$1], [], [], [$1])

    if test "$found_mysql" = "yes" -a -n "$mysql_version_req"; then

        AC_MSG_CHECKING([if MySQL version is >= $mysql_version_req])

        dnl Decompose required version string of MySQL
        dnl and calculate its number representation
        mysql_version_req_major=`expr $mysql_version_req : '\([[0-9]]*\)'`
        mysql_version_req_minor=`expr $mysql_version_req : '[[0-9]]*\.\([[0-9]]*\)'`
        mysql_version_req_micro=`expr $mysql_version_req : '[[0-9]]*\.[[0-9]]*\.\([[0-9]]*\)'`
        if test "x$mysql_version_req_micro" = "x"; then
            mysql_version_req_micro="0"
        fi

        mysql_version_req_number=`expr $mysql_version_req_major \* 1000000 \
                                   \+ $mysql_version_req_minor \* 1000 \
                                   \+ $mysql_version_req_micro`

        dnl Decompose version string of installed MySQL
        dnl and calculate its number representation
        mysql_version_major=`expr $MYSQL_VERSION : '\([[0-9]]*\)'`
        mysql_version_minor=`expr $MYSQL_VERSION : '[[0-9]]*\.\([[0-9]]*\)'`
        mysql_version_micro=`expr $MYSQL_VERSION : '[[0-9]]*\.[[0-9]]*\.\([[0-9]]*\)'`
        if test "x$mysql_version_micro" = "x"; then
            mysql_version_micro="0"
        fi

        mysql_version_number=`expr $mysql_version_major \* 1000000 \
                                   \+ $mysql_version_minor \* 1000 \
                                   \+ $mysql_version_micro`

        mysql_version_check=`expr $mysql_version_number \>\= $mysql_version_req_number`
        if test "$mysql_version_check" = "1"; then
            AC_MSG_RESULT([yes])
        else
            AC_MSG_RESULT([no])
        fi
    fi

    AC_SUBST([MYSQL_VERSION])
    AC_SUBST([MYSQL_CFLAGS])
    AC_SUBST([MYSQL_LDFLAGS])
])