From 52b3923a9dbcc2660f593bef288a624e5c7ed696 Mon Sep 17 00:00:00 2001
From: "Greg J. Badros" <gjb@cs.washington.edu>
Date: Mon, 27 Sep 1999 23:29:07 +0000
Subject: [PATCH] * configure.in:  Added --enable-debug-freelist option.

* acconfig.h: Added DEBUG_FREELIST.
---
 acconfig.h   | 3 +++
 configure.in | 6 ++++++
 2 files changed, 9 insertions(+)

diff --git a/acconfig.h b/acconfig.h
index 6f5fc715e..28066bfcb 100644
--- a/acconfig.h
+++ b/acconfig.h
@@ -52,6 +52,9 @@
 #undef DEBUG_EXTENSIONS
 #undef READER_EXTENSIONS
 
+/* Define this if you want to debug the free list (helps w/ GC bugs) */
+#undef DEBUG_FREELIST
+
 /* Define this if your system defines S_ISLNK in sys/stat.h */
 #undef HAVE_S_ISLNK
 
diff --git a/configure.in b/configure.in
index dc8ab11e4..614e57de0 100644
--- a/configure.in
+++ b/configure.in
@@ -50,6 +50,12 @@ AC_ARG_ENABLE(guile-debug,
     AC_DEFINE(GUILE_DEBUG)
   fi)
 
+AC_ARG_ENABLE(debug-freelist,
+  [  --enable-debug-freelist    Include garbage collector freelist debugging code],
+  if test "$enable_debug_freelist" = y || test "$enable_debug_freelist" = yes; then
+    AC_DEFINE(DEBUG_FREELIST)
+  fi)
+
 AC_ARG_ENABLE(posix,
   [  --disable-posix         omit posix interfaces],,
   enable_posix=yes)