From 7b344d773d002a1b09e5bc9886291ecdf9b719ae Mon Sep 17 00:00:00 2001
From: Natalia Portillo <claunia@claunia.com>
Date: Sun, 11 Apr 2021 00:31:35 +0100
Subject: [PATCH] Change how old Borland DOS compilers are detected.

---
 setter/src/dos/dos.c     |  2 +-
 setter/src/dos/dosdefs.h | 10 +++++++++-
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/setter/src/dos/dos.c b/setter/src/dos/dos.c
index edabf22..edff90a 100644
--- a/setter/src/dos/dos.c
+++ b/setter/src/dos/dos.c
@@ -139,7 +139,7 @@ unsigned int _dos_getdiskfree_ex(unsigned int drive, struct diskfree_ex_t* disks
 #endif
 }
 
-#if defined(__BORLANDC__) && __BORLANDC__ <= 0x200
+#ifdef OLD_BORLAND
 unsigned _dos_write(int handle, void far* buf, unsigned len, unsigned* nwritten)
 {
     int ret;
diff --git a/setter/src/dos/dosdefs.h b/setter/src/dos/dosdefs.h
index 48fc1d3..9ffb659 100644
--- a/setter/src/dos/dosdefs.h
+++ b/setter/src/dos/dosdefs.h
@@ -36,6 +36,14 @@ Copyright (C) 2011-2021 Natalia Portillo
 #define __dos_mkdir(path) mkdir(path)
 #endif
 
+#if defined(__BORLANDC__) && __BORLANDC__ <= 0x200
+#define OLD_BORLAND 1
+#endif
+
+#if defined(__TURBOC__) && __TURBOC__ <= 0x297 && !defined(OLD_BORLAND)
+#define OLD_BORLAND 1
+#endif
+
 #if defined(__WATCOMC__)
 #pragma pack(__push, 1)
 #else
@@ -85,7 +93,7 @@ unsigned int _dos_getdiskfree_ex(unsigned int drive, struct diskfree_ex_t* disks
 #endif
 
 // Seems these were defined starting in Borland C++ 3.0
-#if defined(__BORLANDC__) && __BORLANDC__ <= 0x200
+#ifdef OLD_BORLAND
 #include <io.h>
 
 #define _dos_setfileattr(path, attrib) _chmod(path, 1, attrib)