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# ===========================================================================
# http://www.gnu.org/software/autoconf-archive/ax_prog_scalac.html
# ===========================================================================
#
# SYNOPSIS
#
# AX_PROG_SCALAC
#
# DESCRIPTION
#
# AX_PROG_SCALAC will check that a scala compiler is available, that it
# works and set SCALAC for the Makefile.
#
# AX_PROG_SCALAC will search the path for a Scala compiler. To choose
# another compiler use the environment variable SCALAC.
#
# LICENSE
#
# Copyright (c) 2013 Sveinung Kvilhaugsvik <sveinung84@users.sourceforge.net>
#
# 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. This file is offered as-is, without any
# warranty.
#serial 1
AC_ARG_VAR(SCALAC, [scala compiler])
AC_DEFUN([AX_PROG_SCALAC], [
AC_CHECK_PROGS(SCALAC, [scalac])
AS_IF([test x"$SCALAC" != x], [
AC_CACHE_VAL(ax_cv_scalac_works, [
AC_MSG_CHECKING([if the Scala compiler works])
TESTFILE=conftest.scala
echo ["object conftest {"] > $TESTFILE
echo [" def main(args: Array[String]): Unit = return"] >> $TESTFILE
echo ["}"] >> $TESTFILE
[$SCALAC $TESTFILE && ax_cv_scalac_works=yes || ax_cv_scalac_works=no]
AC_MSG_RESULT($ax_cv_scalac_works)
AS_IF([test x"$ax_cv_scalac_works" != xyes], [
AC_MSG_ERROR([Scala compiler does not work. Unable to compile $TESTFILE])
])
])
], AC_MSG_WARN([Scala compiler not found]))
])
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