ax_prog_mysqladmin.m4

# ===========================================================================
#    https://www.gnu.org/software/autoconf-archive/ax_prog_mysqladmin.html
# ===========================================================================
#
# SYNOPSIS
#
#   AX_PROG_MYSQLADMIN
#
# DESCRIPTION
#
#   Check for the program 'mysqladmin' let script continue if exists & works
#   pops up error message if not.
#
#   Testing of functionality is by invoking it with root password 'rootpass'
#   and a 'flush-privileges' command.
#
#   Besides checking mysql, this macro also set these environment variables
#   upon completion:
#
#     MYSQLADMIN = which mysqladmin
#     MYSQL_DATADIR = directory containing mysql database
#
# LICENSE
#
#   Copyright (c) 2008 Gleen Salmon <gleensalmon@yahoo.com>
#
#   This program is free software; you can redistribute it and/or modify it
#   under the terms of the GNU General Public License as published by the
#   Free Software Foundation; either version 2 of the License, or (at your
#   option) any later version.
#
#   This program is distributed in the hope that it will be useful, but
#   WITHOUT ANY WARRANTY; without even the implied warranty of
#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
#   Public License for more details.
#
#   You should have received a copy of the GNU General Public License along
#   with this program. If not, see <https://www.gnu.org/licenses/>.
#
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#serial 7

AU_ALIAS([AC_PROG_MYSQLADMIN], [AX_PROG_MYSQLADMIN])
AC_DEFUN([AX_PROG_MYSQLADMIN],[
AC_REQUIRE([AC_EXEEXT])dnl
AC_PATH_PROG(MYSQLADMIN, mysqladmin$EXEEXT, nocommand)
if test "$MYSQLADMIN" = nocommand; then
	AC_MSG_ERROR([mysqladmin not found in $PATH])
fi
AC_MSG_CHECKING([if mysqladmin works])
if $MYSQLADMIN -u root -prootpass flush-privileges; then
	AC_MSG_RESULT([yes])
else
	AC_MSG_NOTICE([Before installation, set MySQL root password to rootpass; restore your root password afterwards.])
	AC_MSG_ERROR([mysqladmin cannot run with root password = rootpass])
fi
DATADIR_PATTERN='^|[[[:blank:]]]*datadir[[[:blank:]]]*|[[[:blank:]]]*\([[^[:blank:]]][[^[:blank:]]]*\)[[[:blank:]]]*|'
MYSQL_DATADIR=`$MYSQLADMIN -u root -prootpass variables 2> /dev/null | grep $DATADIR_PATTERN | sed "s/$DATADIR_PATTERN/\1/"`;dnl
])