From 1edcb9b62a1a520eddae8403c19d841c9b18737f Mon Sep 17 00:00:00 2001
From: Bryan Newbold <bnewbold@robocracy.org>
Date: Mon, 20 Feb 2017 00:05:24 -0800
Subject: Import Upstream version 5b3

---
 scmfig.h | 44 +++++++++++++++++++++++++++++---------------
 1 file changed, 29 insertions(+), 15 deletions(-)

(limited to 'scmfig.h')

diff --git a/scmfig.h b/scmfig.h
index ba95450..df8fb8b 100644
--- a/scmfig.h
+++ b/scmfig.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
+/* Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1997 Free Software Foundation, Inc.
  * 
  * 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
@@ -54,6 +54,10 @@
 #  define getcwd(S,L) getwd(S)
 # endif
 
+# ifdef __amigados__
+#  define STDC_HEADERS
+# endif
+
 #else /* HAVE_CONFIG_H */
 
 # ifdef sequent
@@ -167,12 +171,6 @@ rgx.c	init_rgx();	regcomp and regexec. */
 #  define GC_FREE_SEGMENTS
 # endif
 
-/* MEMOIZE_LOCALS will speed up most local variable references.  You
-   will need to remove this and recompile eval.c if you use very large or
-   deep environments (more than 4095 bound variables in one procedure)*/
-
-# define MEMOIZE_LOCALS
-
 /* #define CHEAP_CONTINUATIONS */
 
 /* #define TICKS */
@@ -197,6 +195,11 @@ rgx.c	init_rgx();	regcomp and regexec. */
 
 /* #define CAREFUL_INTS */
 
+/* Define MACRO if you want C level support for hygienic and referentially
+   transparent macros. */
+
+/* #define MACRO */
+
 /* STDC_HEADERS indicates that the include file names are the same as
    ANSI C.  For most modern systems this is the case. */
 
@@ -205,6 +208,13 @@ rgx.c	init_rgx();	regcomp and regexec. */
 #  define __STDC__
 # endif
 
+/* added by Denys Duchier */
+# ifndef SVR4
+#  ifdef __svr4__
+#   define SVR4
+#  endif
+# endif
+
 # ifdef __STDC__
 #  ifndef __HIGHC__		/* overly fussy compiler */
 #   define USE_ANSI_PROTOTYPES
@@ -358,6 +368,12 @@ rgx.c	init_rgx();	regcomp and regexec. */
 # endif
 #endif
 
+#ifdef __GNUC__
+# define FENCE asm volatile ("")
+#else
+# define FENCE /**/
+#endif
+
 #ifdef NON_PREEMPTIVE
 # define DEFER_INTS /**/
 # ifdef TICKS
@@ -370,15 +386,13 @@ rgx.c	init_rgx();	regcomp and regexec. */
 # define ALLOW_INTS POLL
 #else
 # ifdef CAREFUL_INTS
-#  define DEFER_INTS {if (ints_disabled) \
-		      fputs("ints already disabled\n", stderr); \
-			ints_disabled = 1;}
-#  define ALLOW_INTS {if (!ints_disabled) \
-		      fputs("ints already enabled\n", stderr); \
-			ints_disabled = 0;CHECK_INTS}
+#  define DEFER_INTS \
+{FENCE;if (ints_disabled) ints_viol(!0);else ints_disabled = !0;FENCE;}
+#  define ALLOW_INTS \
+{FENCE;if (!ints_disabled) ints_viol(0);else ints_disabled = 0;FENCE;CHECK_INTS}
 # else
-#  define DEFER_INTS {ints_disabled = 1;}
-#  define ALLOW_INTS {ints_disabled = 0;CHECK_INTS}
+#  define DEFER_INTS {FENCE;ints_disabled = !0;FENCE;}
+#  define ALLOW_INTS {FENCE;ints_disabled = 0;FENCE;CHECK_INTS}
 # endif
 # ifdef TICKS
 #  define CHECK_INTS {if (sig_deferred) han_sig();if (alrm_deferred) han_alrm();\
-- 
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