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-rw-r--r--unix/mpconfigport_freedos.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/unix/mpconfigport_freedos.h b/unix/mpconfigport_freedos.h
index 772a92a62b..b2ba06da06 100644
--- a/unix/mpconfigport_freedos.h
+++ b/unix/mpconfigport_freedos.h
@@ -36,3 +36,9 @@
// djgpp dirent struct does not have d_ino field
#undef _DIRENT_HAVE_D_INO
+
+// djgpp errno.h have no ENOTSUP
+#include <errno.h>
+#ifndef ENOTSUP
+#define ENOTSUP 88
+#endif