Guard dirent.h includes

Might not be available on Windows.

configure.ac

@@ -157,7 +157,7 @@ dnl ==========================================================================
 # Checks for header files.
 AC_HEADER_DIRENT
 AC_HEADER_STDC
-AC_CHECK_HEADERS([fcntl.h stdlib.h string.h unistd.h sys/statvfs.h sys/vfs.h sys/statfs.h sys/param.h sys/mount.h])
+AC_CHECK_HEADERS([dirent.h fcntl.h stdlib.h string.h unistd.h sys/statvfs.h sys/vfs.h sys/statfs.h sys/param.h sys/mount.h])
 AX_CREATE_STDINT_H([src/fcstdint.h])
 
 # Checks for typedefs, structures, and compiler characteristics.

fc-cache/fc-cache.c

@@ -41,7 +41,9 @@
 #include <sys/stat.h>
 #include <errno.h>
 #include <fcntl.h>
+#ifdef HAVE_DIRENT_H
 #include <dirent.h>
+#endif
 #include <string.h>
 #include <locale.h>
 

src/fccache.c

@@ -25,7 +25,9 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <fcntl.h>
+#ifdef HAVE_DIRENT_H
 #include <dirent.h>
+#endif
 #include <string.h>
 #include <limits.h>
 #include <sys/types.h>

src/fccfg.c

@@ -25,7 +25,9 @@
 /* Objects MT-safe for readonly access. */
 
 #include "fcint.h"
+#ifdef HAVE_DIRENT_H
 #include <dirent.h>
+#endif
 #include <sys/types.h>
 
 #if defined (_WIN32) && !defined (R_OK)

src/fcdir.c

@@ -23,7 +23,10 @@
  */
 
 #include "fcint.h"
+
+#ifdef HAVE_DIRENT_H
 #include <dirent.h>
+#endif
 
 FcBool
 FcFileIsDir (const FcChar8 *file)

src/fcstat.c

@@ -22,7 +22,9 @@
  */
 #include "fcint.h"
 #include "fcarch.h"
+#ifdef HAVE_DIRENT_H
 #include <dirent.h>
+#endif
 #include <limits.h>
 #include <sys/types.h>
 #include <sys/stat.h>

src/fcxml.c

@@ -26,7 +26,10 @@
 #include "fcint.h"
 #include <fcntl.h>
 #include <stdarg.h>
+
+#ifdef HAVE_DIRENT_H
 #include <dirent.h>
+#endif
 
 #ifdef ENABLE_LIBXML2