Wire up lightning into libguile build

* libguile/Makefile.am (AM_CPPFLAGS):
  (libguile_@GUILE_EFFECTIVE_VERSION@_la_SOURCES): If ENABLE_JIT, build
  lightning.
  (EXTRA_DIST): Add lightning files.
* libguile/lightning/lightning.am (lightning_extra_files): Add COPYING
  and related files to the dist.
* libguile/jit.c:
* libguile/jit.h: New files.

libguile/Makefile.am

@@ -21,6 +21,7 @@
 ##   Fifth Floor, Boston, MA 02110-1301 USA
 
 include $(top_srcdir)/am/snarf
+include $(top_srcdir)/libguile/lightning/lightning.am
 
 AUTOMAKE_OPTIONS = gnu
 
@@ -38,6 +39,10 @@ DEFAULT_INCLUDES =
 AM_CPPFLAGS = -DBUILDING_LIBGUILE=1 -I$(top_srcdir) -I$(top_builddir) \
 	      -I$(top_srcdir)/lib -I$(top_builddir)/lib $(LIBFFI_CFLAGS)
 
+if ENABLE_JIT
+AM_CPPFLAGS += -I$(top_srcdir)/libguile/lightning/include
+endif
+
 AM_CFLAGS = $(GCC_CFLAGS) $(CFLAG_VISIBILITY)
 
 ## The Gnulib Libtool archive.
@@ -170,6 +175,7 @@ libguile_@GUILE_EFFECTIVE_VERSION@_la_SOURCES =				\
 	instructions.c				\
 	intrinsics.c				\
 	ioext.c					\
+	jit.c					\
 	keywords.c				\
 	list.c					\
 	load.c					\
@@ -230,6 +236,10 @@ libguile_@GUILE_EFFECTIVE_VERSION@_la_SOURCES =				\
 	weak-table.c				\
 	weak-vector.c
 
+if ENABLE_JIT
+libguile_@GUILE_EFFECTIVE_VERSION@_la_SOURCES += $(lightning_c_files)
+endif
+
 DOT_X_FILES =					\
 	alist.x					\
 	array-handle.x				\
@@ -634,6 +644,7 @@ modinclude_HEADERS =				\
 	instructions.h				\
 	ioext.h					\
 	iselect.h				\
+	jit.h					\
 	keywords.h				\
 	list.h					\
 	load.h					\
@@ -716,7 +727,8 @@ EXTRA_DIST = ChangeLog-scm ChangeLog-threads				\
     cpp-E.syms cpp-E.c cpp-SIG.syms cpp-SIG.c				\
     c-tokenize.lex							\
     scmconfig.h.top libgettext.h unidata_to_charset.pl libguile.map	\
-    vm-operations.h libguile-2.2-gdb.scm
+    vm-operations.h libguile-2.2-gdb.scm				\
+    $(lightning_c_files) $(lightning_extra_files)
 #    $(DOT_DOC_FILES) $(EXTRA_DOT_DOC_FILES) \
 #    guile-procedures.txt guile.texi
 

libguile/jit.c

@@ -0,0 +1,34 @@
+/* Copyright 2018
+     Free Software Foundation, Inc.
+
+   This file is part of Guile.
+
+   Guile is free software: you can redistribute it and/or modify it
+   under the terms of the GNU Lesser General Public License as published
+   by the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   Guile 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 Lesser General Public
+   License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with Guile.  If not, see
+   <https://www.gnu.org/licenses/>.  */
+
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#if ENABLE_JIT
+#include <lightning.h>
+#endif
+
+#include "jit.h"
+
+void
+scm_init_jit (void)
+{
+}

libguile/jit.h

@@ -0,0 +1,31 @@
+#ifndef SCM_JIT_H
+#define SCM_JIT_H
+
+/* Copyright 2018
+     Free Software Foundation, Inc.
+
+   This file is part of Guile.
+
+   Guile is free software: you can redistribute it and/or modify it
+   under the terms of the GNU Lesser General Public License as published
+   by the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   Guile 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 Lesser General Public
+   License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with Guile.  If not, see
+   <https://www.gnu.org/licenses/>.  */
+
+
+
+#include "libguile/scm.h"
+
+
+
+SCM_INTERNAL void scm_init_jit (void);
+
+#endif  /* SCM_JIT_H */

libguile/lightning/lightning.am

@@ -16,9 +16,6 @@
 
 lightning = $(top_srcdir)/libguile/lightning
 
-# FIXME: define in C files: -D_GNU_SOURCE
-# FIXME: set LIGHTNING_CFLAGS=-I$(lightning)/include in configure.ac
-
 lightning_c_files = 				\
 	$(lightning)/lib/jit_memory.c		\
 	$(lightning)/lib/jit_names.c		\
@@ -28,6 +25,16 @@ lightning_c_files = 				\
 	$(lightning)/lib/lightning.c
 
 lightning_extra_files =					\
+	$(lightning)/AUTHORS				\
+	$(lightning)/ChangeLog				\
+	$(lightning)/COPYING				\
+	$(lightning)/COPYING.LESSER			\
+	$(lightning)/lightning.am			\
+	$(lightning)/NEWS				\
+	$(lightning)/README				\
+	$(lightning)/THANKS				\
+	$(lightning)/TODO				\
+							\
 	$(lightning)/include/lightning.h		\
 	$(lightning)/include/lightning/jit_private.h 	\
 	$(lightning)/include/lightning/jit_arm.h	\