Update to allow gnu make to work with msvc

harbour/ChangeLog

@@ -1,3 +1,11 @@
+19991015-23:25 EDT Paul Tucker <ptucker@sympatico.ca>
+   * source/compiler/harbour.c
+     + || defined(_MSC_VER) around isatty()
+      This allows gnu make to compile harbour.exe
+      It doesn't seem to affect ms make
+   * doc/gmake.txt
+     * updated notes regarding MSVC
+
 19991015-23:15 EDT David G. Holm <dholm@jsd-llc.com>
 
    * include/set.h

harbour/doc/gmake.txt

@@ -143,6 +143,15 @@ For gcc on Win95/WinNT with the Mingw32 library:
   HB_COMPILER       mingw32
 
 For MSVC on Win95/WinNT:
+  Notes: You must create an empty unistd.h in the include directory.
+         gnu make is case sensitive!  If your editor converts
+         harbour.c to HARBOUR.C when it saves the file, then gnu make
+         _will_not_work.
+         If you have MAKE_MODE in your dos environment, make sure it is
+         not set to unix
+
+         For best results, in your copy of make_tpl.bat, also set:
+  C_USR=-DHARBOUR_USE_WIN_GTAPI -TP
   HB_ARCHITECTURE   win32
   HB_COMPILER       msvc
 

harbour/source/compiler/harbour.c

@@ -47,7 +47,7 @@ int main( int argc, char * argv[] )
    return harbour_main( argc, argv );
 }
 
-#ifdef __IBMCPP__
+#if defined(__IBMCPP__) || defined(_MSC_VER)
 int isatty( int handle )
 {
    return ( handle < 4 ) ? 1 : 0;