From 08f9869a63d85a4634ec87c826212b01f935af8e Mon Sep 17 00:00:00 2001
From: George Koehler <xkernigh@netscape.net>
Date: Sun, 6 Nov 2016 15:49:47 -0500
Subject: [PATCH] Remove unused defines from
 lang/cem/libcc.ansi/math/localmath.h

This undoes part of bfeb736, and returns to using DBL_MAX_EXP and
DBL_MIN_EXP from float.h.

Add a dependency on math/localmath.h and other local header files so
libc is rebuilt when those headers change.
---
 lang/cem/libcc.ansi/build.lua        | 20 ++++++++++++--------
 lang/cem/libcc.ansi/math/localmath.h | 17 ++---------------
 2 files changed, 14 insertions(+), 23 deletions(-)

diff --git a/lang/cem/libcc.ansi/build.lua b/lang/cem/libcc.ansi/build.lua
index 3ca95b629..601a50de4 100644
--- a/lang/cem/libcc.ansi/build.lua
+++ b/lang/cem/libcc.ansi/build.lua
@@ -28,9 +28,9 @@ normalrule {
 }
 
 for _, plat in ipairs(vars.plats) do
-    acklibrary {
-        name = "lib_"..plat,
-        srcs = {
+	acklibrary {
+		name = "lib_"..plat,
+		srcs = {
 			"+ctype_files",
 			"+ctype_tab",
 			"./ctype/*.c",
@@ -43,20 +43,24 @@ for _, plat in ipairs(vars.plats) do
 			"./setjmp/*.c",
 			"./setjmp/*.e",
 			"./signal/*.c",
-            "./assert/*.c",
+			"./assert/*.c",
 			"./stdio/*.c",
 			"./stdlib/*.c",
 			"./string/*.c",
 			"./time/*.c",
-			
-        },
+		},
 		hdrs = {}, -- must be empty
 		deps = {
 			"lang/cem/libcc.ansi/headers+headers",
 			"plat/"..plat.."/include+headers",
+			"./malloc/malloc.h",
+			"./math/localmath.h",
+			"./stdio/loc_incl.h",
+			"./stdlib/ext_fmt.h",
+			"./time/loc_time.h",
 		},
-        vars = { plat = plat }
-    }
+		vars = { plat = plat }
+	}
 
 	ackfile {
 		name = "crt_"..plat,
diff --git a/lang/cem/libcc.ansi/math/localmath.h b/lang/cem/libcc.ansi/math/localmath.h
index 7c9a67465..e85c81c0a 100644
--- a/lang/cem/libcc.ansi/math/localmath.h
+++ b/lang/cem/libcc.ansi/math/localmath.h
@@ -18,18 +18,5 @@
 #define	POLYNOM12(x, a)	(POLYNOM11((x),(a)+1)*(x)+(a)[0])
 #define	POLYNOM13(x, a)	(POLYNOM12((x),(a)+1)*(x)+(a)[0])
 
-/* These are set up for 64-bit doubles. */
-
-#ifndef M_MAX_D
-#define M_MAX_D          1.7976931348623157e+308
-#define M_MIN_D		 2.2250738585072014e-308
-#define M_DEXPLEN	 11
-#endif
-#define M_DMAXEXP	 ((1 << (M_DEXPLEN - 1)) - 1)
-#define M_DMINEXP	 (-M_DMAXEXP)
-#define M_LN_MAX_D	 (M_LN2 * M_DMAXEXP)
-#define M_LN_MIN_D	 (M_LN2 * (M_DMINEXP - 1))
-
-#define HUGE		M_MAX_D
-#define MAXDOUBLE	M_MAX_D
-
+#define	M_LN_MAX_D	(M_LN2 * DBL_MAX_EXP)
+#define	M_LN_MIN_D	(M_LN2 * (DBL_MIN_EXP - 1))