##### http://autoconf-archive.cryp.to/ac_prog_java_cc.html
#
# SYNOPSIS
#
#   AC_PROG_JAVA_CC
#
# DESCRIPTION
#
#   Finds the appropriate java compiler on your path. By preference the
#   java compiler is gcj, then jikes then javac.
#
#   The macro can take one argument specifying a space separated list
#   of java compiler names.
#
#   For example:
#
#     AC_PROG_JAVA_CC(javac, gcj)
#
#   The macro also sets the compiler options variable: JAVA_CC_OPTS to
#   something sensible:
#
#    - for GCJ it sets it to: @GCJ_OPTS@
#      (if GCJ_OPTS is not yet defined then it is set to "-C")
#
#    - no other compiler has applicable options yet
#
#   Here's an example configure.in:
#
#     AC_INIT(Makefile.in)
#     AC_PROG_JAVA_CC()
#     AC_OUTPUT(Makefile)
#     dnl End.
#
#   And here's the start of the Makefile.in:
#
#     PROJECT_ROOT      := @srcdir@
#     # Tool definitions.
#     JAVAC             := @JAVA_CC@
#     JAVAC_OPTS        := @JAVA_CC_OPTS@
#     JAR_TOOL          := @jar_tool@
#
# LAST MODIFICATION
#
#   2002-03-04
#
# COPYLEFT
#
#   Copyright (c) 2002 Nic Ferrier <nferrier@tapsellferrier.co.uk>
#
#   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 <http://www.gnu.org/licenses/>.
#
#   As a special exception, the respective Autoconf Macro's copyright
#   owner gives unlimited permission to copy, distribute and modify the
#   configure scripts that are the output of Autoconf when processing
#   the Macro. You need not follow the terms of the GNU General Public
#   License when using or distributing such scripts, even though
#   portions of the text of the Macro appear in them. The GNU General
#   Public License (GPL) does govern all other use of the material that
#   constitutes the Autoconf Macro.
#
#   This special exception to the GPL applies to versions of the
#   Autoconf Macro released by the Autoconf Macro Archive. When you
#   make and distribute a modified version of the Autoconf Macro, you
#   may extend this special exception to the GPL to apply to your
#   modified version as well.

# AC_PROG_JAVA_CC([COMPILER ...])
# --------------------------
# COMPILER ... is a space separated list of java compilers to search for.
# This just gives the user an opportunity to specify an alternative
# search list for the java compiler.
AC_DEFUN([AC_PROG_JAVA_CC],
[AC_ARG_VAR([JAVA_CC],                [java compiler command])dnl
AC_ARG_VAR([JAVA_CC_FLAGS],           [java compiler flags])dnl
m4_ifval([$1],
      [AC_CHECK_TOOLS(JAVA_CC, [$1])],
[AC_CHECK_TOOL(JAVA_CC, gcj)
if test -z "$JAVA_CC"; then
  AC_CHECK_TOOL(JAVA_CC, javac)
fi
if test -z "$JAVA_CC"; then
  AC_CHECK_TOOL(JAVA_CC, jikes)
fi
])

if test "$JAVA_CC" = "gcj"; then
   if test "$GCJ_OPTS" = ""; then
      AC_SUBST(GCJ_OPTS,-C)
   fi
   AC_SUBST(JAVA_CC_OPTS, @GCJ_OPTS@,
        [Define the compilation options for GCJ])
fi
true
])# AC_PROG_JAVA_CC
