rename xindy (2.3) => xindy-old

git-svn-id: svn://tug.org/texlive/trunk@18198 c570f23f-e606-0410-a88d-b1316a301751

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diff --git a/Build/source/utils/xindy-old/README-clisp b/Build/source/utils/xindy-old/README-clisp
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+Prerequisite for building xindy is the clisp package supporting
+foreign function calls functionality.
+
+If your OS distribution already has CLISP installed, xindy will try to
+use it (the configure script searches in PATH to find the `clisp'
+executable, or you can pass the configure option --with-clisp=PATH
+where PATH is an absolute path to the `clisp' executable).
+
+Otherwise, you need to build CLISP from source before building xindy.
+Sources and selected binaries are available by anonymous ftp from
+  <ftp://ftp.gnu.org/pub/gnu/clisp/>
+and its mirrors.
+
+Sample steps to build clisp:
+
+=======================================================
+# define this to any directory where clisp should be built, e.g.:
+clisp_builddir=`pwd`/clisp-build-dir
+
+wget http://ftp.gnu.org/pub/gnu/clisp/release/2.43/clisp-2.43.tar.gz
+gzip -dc clisp-2.43.tar.gz | tar xf -
+
+cd clisp-2.43
+./configure $clisp_builddir --with-dynamic-ffi --ignore-absence-of-libsigsegv
+cd $clisp_builddir
+make
+=======================================================
+
+NOTE: clisp package is only a build-dependency: it is not used by
+xindy at runtime. So clisp could be uninstalled after xindy was built.
+Therefore, running "make install" is not necessary, and you can
+specify --with-clisp=$clisp_builddir/clisp when configuring xindy.
+
+Xindy requires a clisp built with Foreign Function Interface support.
+If you are using clisp 2.44 or newer, note the following (taken from
+the NEWS file from clisp sources):
+
+* CLISP does not come with GNU libffcall anymore.
+  This is now a separate package and should be installed separately.
+  Pass --with-libffcall-prefix to the top-level configure if it is not
+  installed in a standard place.
+  Option --with-dynamic-ffi is now replaced with --with-ffcall.
+
+So you would need to install libffcall separately, before installing clisp,
+and change --with-dynamic-ffi to --with-ffcall in the xindy configure call.
+You can download libffcall sources from
+http://www.haible.de/bruno/packages-ffcall-README.html
+or from the "ffcall" directory in the clisp-2.43 tarball,
+or from http://packages.debian.org/sid/libffcall1
+(containing some improvements from Debian).
+Again, this is needed only for clisp 2.44 and newer.
+
+When running `configure' for clisp, the following options should be noted:
+
+=======================================================
+  --with-dynamic-ffi (for clisp 2.43 and older), or
+  --with-ffcall (for clisp 2.44 and newer)
+
+    This enables the Foreign Function Interface in clisp.
+    But strictly speaking, it is not necessary to use either of these
+    options, because the default is to support Foreign Function
+    Interface when available.
+
+  --ignore-absence-of-libsigsegv
+
+    You may optionally install libsigsegv to improve clisp's runtime
+    behavior.  You may get libsigsegv sources from
+    http://ftp.gnu.org/pub/gnu/libsigsegv/
+
+    If you don't have the libsigsegv library, use the above option to
+    let it build without libsigsegv.
+
+  --with-libsigsegv-prefix=DIR
+  --with-libffcall-prefix=DIR
+
+    In case you have installed libffcall or libsigsegv in some
+    non-standard locations, use the above options to specify their
+    prefix directories (such as /usr/local, /opt or /sw).
+
+  --without-readline
+
+    It was reported that CLISP fails to build on the MacOS X platform,
+    because of the faulty 'readline' package. Use the above option if
+    you'll experience problems.
+=======================================================
+
+As noted above, running "make install" for clisp is not necessary, and
+you can specify --with-clisp=$clisp_builddir/clisp when configuring
+xindy.