I concur with Andreas: unconditionally including <sys/fcntl.h> is not

portable.  Seems to have been added for O_BINARY, which is only needed
for __CYGWIN32__, so include it here only in that case.

diff --git a/src/include/c.h b/src/include/c.h
index c01c5f0ad7f91e0e6decbd8e60d1dcc094767b32..e1b6f07dbf19abdd6d7d389318c0fceafdb0aaec 100644 (file)
--- a/src/include/c.h
+++ b/src/include/c.h
@@ -49,12 +49,12 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-#include <sys/fcntl.h>
 #include <stddef.h>
 #include <stdarg.h>
 
 #ifdef __CYGWIN32__
 #include <errno.h>
+#include <sys/fcntl.h>         /* ensure O_BINARY is available */
 #endif
 
 /* ----------------------------------------------------------------