Squashed 'FFTS/Sources/FFTS/' content from commit d11c3e7

git-subtree-dir: FFTS/Sources/FFTS
git-subtree-split: d11c3e76200e619d35e2d898a28a1c5641a366f4

m4/ax_prog_jar.m4

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+# ===========================================================================
+#        http://www.gnu.org/software/autoconf-archive/ax_prog_jar.html
+# ===========================================================================
+#
+# SYNOPSIS
+#
+#   AX_PROG_JAR
+#
+# DESCRIPTION
+#
+#   AX_PROG_JAR tests for an existing jar program. It uses the environment
+#   variable JAR then tests in sequence various common jar programs.
+#
+#   If you want to force a specific compiler:
+#
+#   - at the configure.in level, set JAR=yourcompiler before calling
+#   AX_PROG_JAR
+#
+#   - at the configure level, setenv JAR
+#
+#   You can use the JAR variable in your Makefile.in, with @JAR@.
+#
+#   Note: This macro depends on the autoconf M4 macros for Java programs. It
+#   is VERY IMPORTANT that you download that whole set, some macros depend
+#   on other. Unfortunately, the autoconf archive does not support the
+#   concept of set of macros, so I had to break it for submission.
+#
+#   The general documentation of those macros, as well as the sample
+#   configure.in, is included in the AX_PROG_JAVA macro.
+#
+# LICENSE
+#
+#   Copyright (c) 2008 Egon Willighagen <e.willighagen@science.ru.nl>
+#
+#   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 6
+
+AU_ALIAS([AC_PROG_JAR], [AX_PROG_JAR])
+AC_DEFUN([AX_PROG_JAR],[
+AC_REQUIRE([AC_EXEEXT])dnl
+if test "x$JAVAPREFIX" = x; then
+        test "x$JAR" = x && AC_CHECK_PROGS(JAR, jar$EXEEXT)
+else
+        test "x$JAR" = x && AC_CHECK_PROGS(JAR, jar, $JAVAPREFIX)
+fi
+test "x$JAR" = x && AC_MSG_ERROR([no acceptable jar program found in \$PATH])
+AC_PROVIDE([$0])dnl
+])