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arangodb/m4/configure.bison

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dnl -*- mode: Autoconf; -*-
dnl ----------------------------------------------------------------------------
dnl --SECTION-- BISON
dnl ----------------------------------------------------------------------------
AC_ARG_ENABLE(bison,
AS_HELP_STRING([--enable-bison], [enable BISON support (default: no)]),
[tr_BISON="${enableval:-yes}"],
[tr_BISON=no]
)
AM_CONDITIONAL(ENABLE_BISON, test "x$tr_BISON" = xyes)
dnl ----------------------------------------------------------------------------
dnl check for bison
dnl ----------------------------------------------------------------------------
if test "x$tr_BISON" = xyes; then
AC_MSG_NOTICE([................................................................................])
AC_MSG_NOTICE([CHECKING BISON])
AC_MSG_NOTICE([................................................................................])
AC_CHECK_PROG(BISON, bison, bison)
tr_bison_usable=no
if test "x$BISON" != x -a "x$BISON" != "x:"; then
AC_MSG_CHECKING([if bison supports required features])
[tr_bison_version=`$BISON --version | head -1 | sed -e 's:^[^0-9]*::' | awk -F. '{print $1 * 10000 + $2 * 100 + $3}'`]
if test "$tr_bison_version" -ge 20401; then
tr_bison_usable=yes
fi
AC_MSG_RESULT($tr_bison_usable)
fi
if test "x$tr_bison_usable" != "xyes"; then
AC_MSG_ERROR([Please install bison version 2.4.1 or higher from http://ftp.gnu.org/gnu/bison/])
fi
AC_MSG_CHECKING([BISON version])
TRI_BISON_VERSION=`$BISON --version | head -1`
AC_MSG_RESULT([$TRI_BISON_VERSION])
AM_CONDITIONAL(ENABLE_BISON, test "x$tr_bison_usable" = xyes)
BASIC_INFO="$BASIC_INFO|BISON: ${TRI_BISON_VERSION}"
else
BASIC_INFO="$BASIC_INFO|BISON: disabled"
fi
dnl ----------------------------------------------------------------------------
dnl --SECTION-- END-OF-FILE
dnl ----------------------------------------------------------------------------
dnl Local Variables:
dnl mode: outline-minor
dnl outline-regexp: "^\\(### @brief\\|## --SECTION--\\|# -\\*- \\)"
dnl End: