djgpp.h: Add comments about standard paths.

* config/i386/djgpp.h: Add comments about standard paths.
(MD_EXEC_PREFIX): Undefine before defining.
(MD_STARTFILE_PREFIX): New.

From-SVN: r39504

gcc/ChangeLog

+2001-02-06  Laurynas Biveinis  <lauras@softhome.net>
+
+	* config/i386/djgpp.h: Add comments about standard paths.
+	(MD_EXEC_PREFIX): Undefine before defining.
+	(MD_STARTFILE_PREFIX): New.
+
 2001-01-30  Bruce Korb  <bkorb@gnu.org>
 
         fixinc/fixincl.c(process):  Emit error message only if appropriate :)

gcc/config/i386/djgpp.h

@@ -90,13 +90,22 @@ Boston, MA 02111-1307, USA.  */
 #undef UNALIGNED_SHORT_ASM_OP
 #define UNALIGNED_SHORT_ASM_OP "\t.short\t"
 
-/* Tell GCC where our standard include directory is.  */
+/* Define standard DJGPP installation paths.                             */
+/* We override default /usr or /usr/local part with /dev/env/DJDIR which */
+/* points to actual DJGPP instalation directory.                         */
+
+/* Standard include directory */
 #undef STANDARD_INCLUDE_DIR
 #define STANDARD_INCLUDE_DIR "/dev/env/DJDIR/include/"
 
 /* Search for as.exe and ld.exe in DJGPP's binary directory. */ 
+#undef MD_EXEC_PREFIX
 #define MD_EXEC_PREFIX "/dev/env/DJDIR/bin/"
 
+/* Standard DJGPP library and startup files */
+#undef MD_STARTFILE_PREFIX
+#define MD_STARTFILE_PREFIX "/dev/env/DJDIR/lib/"
+
 /* Correctly handle absolute filename detection in cp/xref.c */
 #define FILE_NAME_ABSOLUTE_P(NAME) \
         (((NAME)[0] == '/') || ((NAME)[0] == '\\') || \