diff --git a/harbour/ChangeLog b/harbour/ChangeLog
index 4cbe660e18..7b526448e6 100644
--- a/harbour/ChangeLog
+++ b/harbour/ChangeLog
@@ -1,3 +1,7 @@
+19990514-20:15 CET Eddie Runia
+  * source/rtl/gtapi.c
+    A lot of #ifdef #endif added or else it couldn't build out of the box.
+
 19990514-19:50 CET Eddie Runia
   * source/rtl/codebloc.c
     Codeblock patch from Ryszard applied
diff --git a/harbour/source/rtl/gtapi.c b/harbour/source/rtl/gtapi.c
index be6b56e8c5..55e474f072 100644
--- a/harbour/source/rtl/gtapi.c
+++ b/harbour/source/rtl/gtapi.c
@@ -13,24 +13,29 @@ static WORD  suiDispCount  = 0;
 static WORD  suiMaxRow     = 24;
 static WORD  suiMaxCol     = 79;
 static BYTE *sfpScreenBuffer;
-static WORD  suiAttribs[ 4 ] = { 0x07, 0x70, 0x00, 0x00, 0x07 };
+static WORD  suiAttribs[ 5 ] = { 0x07, 0x70, 0x00, 0x00, 0x07 };
 static WORD  suiAttrIndex = 0;
 
 HARBOUR TERMINIT( void )
 {
+#ifdef __DOS__
   WORD uiRectSize;
 
   _gtRectSize( 0, 0, suiMaxRow, suiMaxCol, &uiRectSize );
   sfpScreenBuffer = ( BYTE * )_xgrab( uiRectSize );
+#endif
 }
 
 HARBOUR TERMDONE( void )
 {
+#ifdef __DOS__
   _xfree( sfpScreenBuffer );
+#endif
 }
 
 ERRORCODE _gtBox( WORD uiTop, WORD uiLeft, WORD uiBottom, WORD uiRight, BYTE *fpBoxString )
 {
+#ifdef __DOS__
   int iCount;
 
   if ( uiTop > _gtMaxRow() || uiBottom > _gtMaxRow() ||
@@ -73,6 +78,7 @@ ERRORCODE _gtBox( WORD uiTop, WORD uiLeft, WORD uiBottom, WORD uiRight, BYTE *fp
   _gtWrite( &fpBoxString[ 7 ], 1 );
 
   _gtDispEnd();
+#endif
   return 0;
 }
 
@@ -88,16 +94,20 @@ ERRORCODE _gtBoxS( WORD uiTop, WORD uiLeft, WORD uiBottom, WORD uiRight )
 
 ERRORCODE _gtColorSelect( WORD uiColorIndex )
 {
+#ifdef __DOS__
   if ( uiColorIndex > 4 )
     return 1;
 
   suiAttrIndex = uiColorIndex;
+#endif
   return 0;
 }
 
 ERRORCODE _gtDispBegin( void )
 {
+#ifdef __DOS__
   suiDispCount ++;
+#endif
   return 0;
 }
 
@@ -108,6 +118,7 @@ ERRORCODE _gtDispCount( void )
 
 ERRORCODE _gtDispEnd( void )
 {
+#ifdef __DOS__
   suiDispCount --;
 
   if ( !suiDispCount )
@@ -116,15 +127,18 @@ ERRORCODE _gtDispEnd( void )
       _gtUpdateCursor();
     }
 
+#endif
   return 0;
 }
 
 ERRORCODE _gtFlush( void )
 {
+#ifdef __DOS__
   BYTE *fpVideoMemory;
 
   /* get address of video memory */
   
+#endif
   return 0;
 }
 
@@ -140,9 +154,11 @@ ERRORCODE _gtGetCursor( WORD *uipCursorShape )
 
 ERRORCODE _gtGetPos( WORD *uipRow, WORD *uipCol )
 {
+#ifdef __DOS__
   *uipRow = suiRow;
   *uipCol = suiCol;
 
+#endif
   return 0;
 }
 
@@ -171,23 +187,27 @@ void _gtPreExt( void )
 
 ERRORCODE _gtRectSize( WORD uiTop, WORD uiLeft, WORD uiBottom, WORD uiRight, WORD *uipBuffSize )
 {
+#ifdef __DOS__
   if ( uiTop > _gtMaxRow() || uiBottom > _gtMaxRow() ||
        uiLeft > _gtMaxCol() || uiRight > _gtMaxCol() ||
        uiTop > uiBottom || uiLeft > uiRight )
     return 1;
 
   *uipBuffSize = ( uiBottom - uiTop  + 1 ) * ( uiRight - uiLeft + 1 ) * 2;
+#endif
   return 0;
 }
 
 ERRORCODE _gtRepChar( WORD uiRow, WORD uiCol, WORD uiChar, WORD uiCount )
 {
+#ifdef __DOS__
   char buff[ 255 ];
 
   memset( buff, uiChar, uiCount );
   buff[ uiCount ] = 0x0;
   _gtSetPos( uiRow, uiCol );
   _gtWrite( buff, uiCount );
+#endif
   return 0;
 }
 
@@ -203,8 +223,10 @@ ERRORCODE _gtSave( WORD uiTop, WORD uiLeft, WORD uiBottom, WORD uiRight, BYTE *f
 
 ERRORCODE _gtScrDim( WORD *uipHeight, WORD *uipWidth )
 {
+#ifdef __DOS__
   *uipHeight = suiMaxRow;
   *uipWidth  = suiMaxCol;
+#endif
   return 0;
 }
 
@@ -230,6 +252,7 @@ ERRORCODE _gtSetCursor( WORD uiCursorShape )
 
 ERRORCODE _gtSetMode( WORD uiRows, WORD uiCols )
 {
+#ifdef __DOS__
   if ( suiMaxRow != uiRows || suiMaxCol != uiCols )
     {
       suiMaxRow = uiRows;
@@ -238,11 +261,13 @@ ERRORCODE _gtSetMode( WORD uiRows, WORD uiCols )
       /* change buffer */
     }
 
+#endif
   return 0;
 }
 
 ERRORCODE _gtSetPos( WORD uiRow, WORD uiCol )
 {
+#ifdef __DOS__
   if ( uiRow > _gtMaxRow() || uiCol > _gtMaxCol() )
     return 1;
 
@@ -250,6 +275,7 @@ ERRORCODE _gtSetPos( WORD uiRow, WORD uiCol )
   suiCol = uiCol;
   _gtUpdateCursor();
 
+#endif
   return 0;
 }
 
@@ -260,6 +286,7 @@ ERRORCODE _gtSetSnowFlag( BOOL bNoSnow )
 
 ERRORCODE _gtUpdateCursor( void )
 {
+#ifdef __DOS__
   union REGS regs;
 
   regs.h.ah = 2;  /* set cursor position */
@@ -269,11 +296,13 @@ ERRORCODE _gtUpdateCursor( void )
 
   int86( VIDEO_INT, &regs, &regs );
 
+#endif
   return 0;
 }
 
 ERRORCODE _gtWrite( BYTE *fpStr, WORD uiLen )
 {
+#ifdef __DOS__
   int iOffset = suiRow * suiMaxRow + suiCol;
   int iCount;
 
@@ -286,14 +315,17 @@ ERRORCODE _gtWrite( BYTE *fpStr, WORD uiLen )
   if ( !suiDispCount )
     _gtFlush();
 
+#endif
   return 0;
 }
 
 ERRORCODE _gtWriteAt( WORD uiRow, WORD uiCol, BYTE *fpStr, WORD uiLen )
 {
+#ifdef __DOS__
   if ( !_gtSetPos( uiRow, uiCol ) )
     return _gtWrite( fpStr, uiLen );
 
+#endif
   return 1;
 }