diff -ur lsdldoom-1.4.4.4.orig1/src/d_deh.c lsdldoom-1.4.4.4/src/d_deh.c
--- lsdldoom-1.4.4.4.orig1/src/d_deh.c	2006-04-22 19:54:57.000000000 +0100
+++ lsdldoom-1.4.4.4/src/d_deh.c	2006-04-22 20:08:50.000000000 +0100
@@ -965,7 +965,7 @@
 // Prototypes for block processing functions
 // Pointers to these functions are used as the blocks are encountered.
 
-void deh_procThing(DEHFILE *, FILE*, char *);
+static void deh_procThing(DEHFILE *fpin, FILE* fpout, char *line);
 void deh_procFrame(DEHFILE *, FILE*, char *);
 void deh_procPointer(DEHFILE *, FILE*, char *);
 void deh_procSounds(DEHFILE *, FILE*, char *);
diff -ur lsdldoom-1.4.4.4.orig1/src/doomtype.h lsdldoom-1.4.4.4/src/doomtype.h
--- lsdldoom-1.4.4.4.orig1/src/doomtype.h	2006-04-22 19:54:57.000000000 +0100
+++ lsdldoom-1.4.4.4/src/doomtype.h	2006-04-22 20:08:50.000000000 +0100
@@ -47,6 +47,12 @@
 typedef signed long long int_64_t; 
 typedef unsigned long long uint_64_t; 
 
+#ifdef __GNUC__
+#define CONSTFUNC __attribute__((const))
+#else
+#define CONSTFUNC
+#endif
+
 /* CPhipps - use limits.h instead of depreciated values.h */
 #include <limits.h>
 #endif
diff -ur lsdldoom-1.4.4.4.orig1/src/drawcol.S lsdldoom-1.4.4.4/src/drawcol.S
--- lsdldoom-1.4.4.4.orig1/src/drawcol.S	2006-04-22 19:54:57.000000000 +0100
+++ lsdldoom-1.4.4.4/src/drawcol.S	2006-04-22 20:23:39.000000000 +0100
@@ -41,7 +41,7 @@
 
  .text
  .align 8
- .globl R_DrawColumn_Normal
+// .globl R_DrawColumn_Normal
 R_DrawColumn_Normal:
 
  pushl %ebp
@@ -196,7 +196,7 @@
 //================
 
  .align 8
- .globl R_DrawTLColumn_Normal
+// .globl R_DrawTLColumn_Normal
 R_DrawTLColumn_Normal:
 
  pushl %ebp
@@ -386,7 +386,7 @@
  ret
 
  .align 8
- .globl R_DrawColumn_HighRes
+// .globl R_DrawColumn_HighRes
 R_DrawColumn_HighRes:
 
  pushl %ebp
@@ -540,7 +540,7 @@
 //================
 
  .align 8
- .globl R_DrawTLColumn_HighRes
+// .globl R_DrawTLColumn_HighRes
 R_DrawTLColumn_HighRes:
 
  pushl %ebp
diff -ur lsdldoom-1.4.4.4.orig1/src/drawspan.S lsdldoom-1.4.4.4/src/drawspan.S
--- lsdldoom-1.4.4.4.orig1/src/drawspan.S	2006-04-22 19:54:57.000000000 +0100
+++ lsdldoom-1.4.4.4/src/drawspan.S	2006-04-22 20:23:39.000000000 +0100
@@ -44,7 +44,7 @@
 
 .text
 .align 8
-.globl R_DrawSpan
+//.globl R_DrawSpan
 
 R_DrawSpan:
  pushl %ebp
diff -ur lsdldoom-1.4.4.4.orig1/src/m_fixed.h lsdldoom-1.4.4.4/src/m_fixed.h
--- lsdldoom-1.4.4.4.orig1/src/m_fixed.h	2006-04-22 19:54:57.000000000 +0100
+++ lsdldoom-1.4.4.4/src/m_fixed.h	2006-04-22 20:16:25.000000000 +0100
@@ -63,7 +63,7 @@
 /* killough 5/10/98: In djgpp, use inlined assembly for performance
  * CPhipps - made __inline__ to inline, as specified in the gcc docs
  * Also made const */
-inline static const fixed_t FixedMul(fixed_t a, fixed_t b)
+inline static CONSTFUNC fixed_t FixedMul(fixed_t a, fixed_t b)
 {
   fixed_t result;
   int dummy;
@@ -103,7 +103,7 @@
  * killough 9/5/98: optimized to reduce the number of branches
  * CPhipps - made __inline__ to inline, as specified in the gcc docs
  * Also made const */
-inline static const fixed_t FixedDiv(fixed_t a, fixed_t b)
+inline static CONSTFUNC fixed_t FixedDiv(fixed_t a, fixed_t b)
 {
   if (abs(a) >> 14 < abs(b))
     {
@@ -126,7 +126,7 @@
 #else /* I386_ASM */
 /* CPhipps - made __inline__ to inline, as specified in the gcc docs
  * Also made const */
-inline static const fixed_t FixedDiv(fixed_t a, fixed_t b)
+inline static CONSTFUNC fixed_t FixedDiv(fixed_t a, fixed_t b)
 {
   return (abs(a)>>14) >= abs(b) ? ((a^b)>>31) ^ INT_MAX :
     (fixed_t)(((int_64_t) a << FRACBITS) / b);
@@ -138,7 +138,7 @@
  * FixedMod - returns a % b, guaranteeing 0<=a<b
  * (notice that the C standard for % does not guarantee this)
  */
-inline static const fixed_t FixedMod(fixed_t a, fixed_t b)
+inline static CONSTFUNC fixed_t FixedMod(fixed_t a, fixed_t b)
 {
   if (b & (b-1)) {
     fixed_t r = a % b;
diff -ur lsdldoom-1.4.4.4.orig1/src/p_maputl.h lsdldoom-1.4.4.4/src/p_maputl.h
--- lsdldoom-1.4.4.4.orig1/src/p_maputl.h	2006-04-22 19:54:57.000000000 +0100
+++ lsdldoom-1.4.4.4/src/p_maputl.h	2006-04-22 20:08:50.000000000 +0100
@@ -63,12 +63,6 @@
 
 typedef boolean (*traverser_t)(intercept_t *in);
 
-#ifdef __GNUC__
-#define CONSTFUNC const
-#else
-#define CONSTFUNC
-#endif
-
 fixed_t CONSTFUNC P_AproxDistance (fixed_t dx, fixed_t dy);
 int     CONSTFUNC P_PointOnLineSide (fixed_t x, fixed_t y, const line_t *line);
 int     CONSTFUNC P_PointOnDivlineSide (fixed_t x, fixed_t y, 
diff -ur lsdldoom-1.4.4.4.orig1/src/r_bsp.h lsdldoom-1.4.4.4/src/r_bsp.h
--- lsdldoom-1.4.4.4.orig1/src/r_bsp.h	2006-04-22 19:54:57.000000000 +0100
+++ lsdldoom-1.4.4.4/src/r_bsp.h	2006-04-22 20:08:50.000000000 +0100
@@ -41,11 +41,6 @@
 extern line_t   *linedef;
 extern sector_t *frontsector;
 extern sector_t *backsector;
-extern int      rw_x;
-extern int      rw_stopx;
-extern boolean  segtextured;
-extern boolean  markfloor;      /* false if the back side is the same plane */
-extern boolean  markceiling;
 
 /* old code -- killough:
  * extern drawseg_t drawsegs[MAXDRAWSEGS];
diff -ur lsdldoom-1.4.4.4.orig1/src/r_draw.c lsdldoom-1.4.4.4/src/r_draw.c
--- lsdldoom-1.4.4.4.orig1/src/r_draw.c	2006-04-22 19:54:57.000000000 +0100
+++ lsdldoom-1.4.4.4/src/r_draw.c	2006-04-22 20:08:50.000000000 +0100
@@ -383,6 +383,7 @@
       }
     else
       {
+	if (heightmask == -1 && frac < 0) frac = 0;
         while ((count-=2)>=0)   // texture height is a power of 2 -- killough
           {
             *dest = tranmap[(*dest<<8)+colormap[source[(frac>>FRACBITS) & heightmask]]]; // phares
diff -ur lsdldoom-1.4.4.4.orig1/src/r_main.c lsdldoom-1.4.4.4/src/r_main.c
--- lsdldoom-1.4.4.4.orig1/src/r_main.c	2006-04-22 19:54:57.000000000 +0100
+++ lsdldoom-1.4.4.4/src/r_main.c	2006-04-22 20:08:50.000000000 +0100
@@ -116,7 +116,7 @@
 // killough 5/2/98: reformatted
 //
 
-const int R_PointOnSide(fixed_t x, fixed_t y, const node_t *node)
+CONSTFUNC int R_PointOnSide(fixed_t x, fixed_t y, const node_t *node)
 {
   if (!node->dx)
     return x <= node->x ? node->dy > 0 : node->dy < 0;
@@ -135,7 +135,7 @@
 
 // killough 5/2/98: reformatted
 
-const int R_PointOnSegSide(fixed_t x, fixed_t y, const seg_t *line)
+CONSTFUNC int R_PointOnSegSide(fixed_t x, fixed_t y, const seg_t *line)
 {
   fixed_t lx = line->v1->x;
   fixed_t ly = line->v1->y;
diff -ur lsdldoom-1.4.4.4.orig1/src/r_main.h lsdldoom-1.4.4.4/src/r_main.h
--- lsdldoom-1.4.4.4.orig1/src/r_main.h	2006-04-22 19:54:57.000000000 +0100
+++ lsdldoom-1.4.4.4/src/r_main.h	2006-04-22 20:08:50.000000000 +0100
@@ -108,8 +108,8 @@
 // Utility functions.
 //
 
-const int R_PointOnSide(fixed_t x, fixed_t y, const node_t *node);
-const int R_PointOnSegSide(fixed_t x, fixed_t y, const seg_t *line);
+CONSTFUNC int R_PointOnSide(fixed_t x, fixed_t y, const node_t *node);
+CONSTFUNC int R_PointOnSegSide(fixed_t x, fixed_t y, const seg_t *line);
 angle_t R_PointToAngle(fixed_t x, fixed_t y);
 angle_t R_PointToAngle2(fixed_t x1, fixed_t y1, fixed_t x2, fixed_t y2);
 subsector_t *R_PointInSubsector(fixed_t x, fixed_t y);