Update for Microsoft compiler.

Makefile.dsu

@@ -4,18 +4,28 @@
 #### Start of system configuration section. ####
 
 CC = cl
-LIBDIR = \msc6.0\lib
-
-CFLAGS = -O -Alfw
-LDFLAGS = -O
+# Change the following directories to match your installation.
+LIBDIR = c:\msvc\lib
+INCDIR = c:\msvc\include
+
+# CFLAGS are compile-time options and LDFLAGS are link-time options. They are
+# customized for MSVC 1.0 (MSC 8.0). If you have a different version of the
+# compiler, you may need to change some of the options to their equivalents.
+# -Ot optimize for speed
+# -AL large memory model
+# -Za ANSI C conformance
+# -nologo suppress MSVC banners
+# -onerror:noexe no .EXE file if link errors occur
+CFLAGS = -Ot -AL -Za -nologo
+LDFLAGS = -onerror:noexe -nologo
 LIBS = $(LIBDIR)\llibce.lib $(LIBDIR)\graphics.lib
 
 #### End of system configuration section. ####
 
 # This rule allows us to supply the necessary -D options
 # in addition to whatever the user asks for.
 .c.obj:
- $(CC) -c -I. $(CPPFLAGS) $(CFLAGS) $<
+ $(CC) -c -I. -I$(INCDIR) $(CPPFLAGS) $(CFLAGS) $<
 
 OBJ = main.obj screen.obj brac.obj ch.obj charset.obj cmdbuf.obj command.obj \
  decode.obj edit.obj filename.obj forwback.obj help.obj ifile.obj \

defines.ds

@@ -208,7 +208,6 @@
 
 /* Define if you have the ANSI C header files. */
 #define STDC_HEADERS 1
-#define __STDC__ 1
 
 /*
  * Regular expression library.
@@ -298,7 +297,7 @@
 #define HAVE_FCNTL_H 1
 
 /* Define if you have the <limits.h> header file. */
-#define HAVE_LIMITS_H 0
+#define HAVE_LIMITS_H 1
 
 /* Define if you have the <stdio.h> header file. */
 #define HAVE_STDIO_H 1
@@ -354,4 +353,16 @@
 #define S_IFMT _S_IFMT
 #define S_IFDIR _S_IFDIR
 #define S_IFREG _S_IFREG
+#define dup _dup
+#define open _open
+#define lseek _lseek
+#define write _write
+#define creat _creat
+#define fstat _fstat
+#define isatty _isatty
+#define close _close
+#define read _read
+#define ungetch _ungetch
+#define kbhit _kbhit
+#define getch _getch
 #endif