# SYNOPSIS
#
# AX_CHECK_PROG
#
# DESCRIPTION
#
# Check if the given program installed, let script continue if exists, pops up
# error message if not.
#
# Besides checking existence, this macro also set these environment
# variables upon completion:
#
# PROG_"prog_name" = result of checking if program installed (yes/no)
AC_DEFUN([AX_CHECK_PROG],
[dnl
AC_CHECK_PROG([PROG_$1], [$1], [yes], [no])
AS_IF([test "$PROG_$1" = "no"],
[dnl
AC_MSG_ERROR([Utility "$1" not found.])
])
])