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+# ===========================================================================
+# http://www.gnu.org/software/autoconf-archive/ax_prog_java_cc.html
+# ===========================================================================
+#
+# SYNOPSIS
+#
+# AX_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:
+#
+# AX_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)
+# AX_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@
+#
+# LICENSE
+#
+# Copyright (c) 2008 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 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.
+
+#serial 4
+
+# AX_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.
+AU_ALIAS([AC_PROG_JAVA_CC], [AX_PROG_JAVA_CC])
+AC_DEFUN([AX_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 "$GCJ_OPTS" = ""; then
+ AC_SUBST(GCJ_OPTS,-C)
+ fi
+ AC_SUBST(JAVA_CC_OPTS, @GCJ_OPTS@,
+ [Define the compilation options for GCJ])
+fi
+test -z "$JAVA_CC" && AC_MSG_ERROR([no acceptable java compiler found in \$PATH])
+])# AX_PROG_JAVA_CC