autoconf'd <errno.h> handling and removed an unused '#include <sys/stat.h>'

git-svn-id: https://svn.code.sf.net/p/freeglut/code/trunk@553 7f0cb862-5218-0410-a997-914c9d46530a

freeglut/freeglut/ChangeLog

@@ -886,3 +886,5 @@ default.
 ***************************************************************************
 
 (230) Removed acconfig.h, it is deprecated and we don't need it.
+
+(231) Cleaned up and autoconf'd the header inclusion story a bit.

freeglut/freeglut/configure.ac

@@ -23,7 +23,7 @@ AC_SUBST([LIBXXF86VM])
 
 # Checks for header files.
 AC_HEADER_STDC
-AC_CHECK_HEADERS([GL/gl.h GL/glu.h GL/glx.h fcntl.h limits.h sys/ioctl.h sys/param.h sys/time.h])
+AC_CHECK_HEADERS([GL/gl.h GL/glu.h GL/glx.h errno.h fcntl.h limits.h sys/ioctl.h sys/param.h sys/time.h])
 AC_HEADER_TIME
 
 save_CFLAGS="$CFLAGS"

freeglut/freeglut/src/freeglut_joystick.c

@@ -73,6 +73,9 @@
 #    if HAVE_FCNTL_H
 #        include <fcntl.h>
 #    endif
+#    if HAVE_ERRNO_H
+#        include <errno.h>
+#    endif
 #    if defined(__FreeBSD__) || defined(__NetBSD__)
 /* XXX The below hack is done until freeglut's autoconf is updated. */
 #        define HAVE_USB_JS    1
@@ -93,8 +96,6 @@
 #        define JS_RETURN (sizeof(struct JS_DATA_TYPE))
 #    endif
 
-#    include <errno.h>
-
 #    if defined(__linux__)
 #        include <linux/joystick.h>
 

freeglut/freeglut/src/freeglut_main.c

@@ -27,12 +27,11 @@
 
 #include <GL/freeglut.h>
 #include "freeglut_internal.h"
-
-#if TARGET_HOST_UNIX_X11
+#if HAVE_ERRNO_H
 #    include <errno.h>
-#include <sys/stat.h>
-#elif TARGET_HOST_WIN32
-#elif TARGET_HOST_WINCE
+#endif
+
+#if TARGET_HOST_WINCE
 
 typedef struct GXDisplayProperties GXDisplayProperties;
 typedef struct GXKeyList GXKeyList;