Add compatibility for the missing S_ISFIFO on Windows.

src/include/compat/sys/stat.h

@@ -0,0 +1,45 @@
+/* Compatibility shim for <sys/stat.h>
+ *
+ * Copyright (C) 2016 Reece H. Dunn
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see: <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef SYS_STAT_H_COMPAT_SHIM
+#define SYS_STAT_H_COMPAT_SHIM
+
+#ifdef _MSC_VER
+
+#if _MSC_VER >= 1600 // Visual C++ 10 (Visual Studio 2010) and above...
+#include <../ucrt/sys/stat.h>
+#else
+#include <../include/sys/stat.h>
+#endif
+
+#else
+
+#pragma GCC system_header // Silence "warning: #include_next is a GCC extension"
+#include_next <sys/stat.h>
+
+#endif
+
+#ifndef S_ISDIR
+#define S_ISDIR(mode) (((mode) & S_IFMT) == S_IFDIR)
+#endif
+
+#ifndef S_ISFIFO
+#define S_ISFIFO(mode) (((mode) & S_IFMT) == _S_IFIFO)
+#endif
+
+#endif

src/libespeak-ng/speech.c

@@ -56,10 +56,6 @@
 #include "fifo.h"
 #include "event.h"
 
-#ifndef S_ISDIR
-#define S_ISDIR(mode) (((mode) & S_IFMT) == S_IFDIR)
-#endif
-
 unsigned char *outbuf = NULL;
 
 espeak_EVENT *event_list = NULL;