diff --git a/freeglut/freeglut/CMakeLists.txt b/freeglut/freeglut/CMakeLists.txt
index 0227a95..a8ab76b 100644
--- a/freeglut/freeglut/CMakeLists.txt
+++ b/freeglut/freeglut/CMakeLists.txt
@@ -289,11 +289,8 @@ CHECK_INCLUDE_FILES(stdbool.h 	HAVE_STDBOOL_H)
 CHECK_INCLUDE_FILES(sys/param.h HAVE_SYS_PARAM_H)
 CHECK_INCLUDE_FILES(sys/ioctl.h HAVE_SYS_IOCTL_H)
 CHECK_INCLUDE_FILES(fcntl.h 	HAVE_FCNTL_H)
-CHECK_INCLUDE_FILES(errno.h 	HAVE_ERRNO_H)
 CHECK_INCLUDE_FILES(usbhid.h 	HAVE_USBHID_H)
 CHECK_FUNCTION_EXISTS(gettimeofday HAVE_GETTIMEOFDAY)
-CHECK_FUNCTION_EXISTS(vfprintf  HAVE_VFPRINTF)
-CHECK_FUNCTION_EXISTS(_doprnt   HAVE_DOPRNT)
 CHECK_FUNCTION_EXISTS(XParseGeometry   HAVE_XPARSEGEOMETRY)
 IF (NOT HAVE_XPARSEGEOMETRY)
    LIST(APPEND FREEGLUT_SRCS
diff --git a/freeglut/freeglut/progs/demos/shapes/shapes.c b/freeglut/freeglut/progs/demos/shapes/shapes.c
index d132777..8d69fc0 100644
--- a/freeglut/freeglut/progs/demos/shapes/shapes.c
+++ b/freeglut/freeglut/progs/demos/shapes/shapes.c
@@ -286,6 +286,7 @@ GLint getAttribOrUniformLocation(const char* name, GLuint program, GLboolean isA
             fprintf(stderr, "Warning: Could not bind attrib %s\n", name);  
         }
 
+		checkError ("getAttribOrUniformLocation");
         return attrib;
     }
     else
@@ -296,9 +297,9 @@ GLint getAttribOrUniformLocation(const char* name, GLuint program, GLboolean isA
             fprintf(stderr, "Warning: Could not bind uniform %s\n", name);  
         }
 
+		checkError ("getAttribOrUniformLocation");
         return uniform;
     }
-    checkError ("getAttribOrUniformLocation");
 }
 
 GLuint program;
diff --git a/freeglut/freeglut/src/fg_joystick.c b/freeglut/freeglut/src/fg_joystick.c
index 9831fb1..7d4c502 100644
--- a/freeglut/freeglut/src/fg_joystick.c
+++ b/freeglut/freeglut/src/fg_joystick.c
@@ -147,14 +147,12 @@ static int fghJoystickFindUSBdev(char *name, char *out, int outlen)
       if (cp)
         return 1;
     }
-#ifdef HAVE_ERRNO_H
     else if (errno == EACCES) {
       if (!protection_warned) {
         fgWarning ( "Can't open %s for read!", buf );
         protection_warned = 1;
       }
     }
-#endif
   }
   return 0;
 }
@@ -172,11 +170,7 @@ static int fghJoystickInitializeHID(struct os_specific_s *os,
 
     if ( ( rd = hid_get_report_desc( os->fd ) ) == 0 )
     {
-#ifdef HAVE_ERRNO_H
         fgWarning ( "error: %s: %s", os->fname, strerror( errno ) );
-#else
-        fgWarning ( "error: %s", os->fname );
-#endif
         return FALSE;
     }
 
@@ -186,11 +180,7 @@ static int fghJoystickInitializeHID(struct os_specific_s *os,
         if( ioctl( os->fd, USB_GET_REPORT_ID, &report_id ) < 0)
         {
             /*** XXX {report_id} may not be the right variable? ***/
-#ifdef HAVE_ERRNO_H
             fgWarning ( "error: %s%d: %s", UHIDDEV, report_id, strerror( errno ) );
-#else
-            fgWarning ( "error: %s%d", UHIDDEV, report_id );
-#endif
             return FALSE;
         }
 
diff --git a/freeglut/freeglut/src/fg_main.c b/freeglut/freeglut/src/fg_main.c
index b387068..330a7bc 100644
--- a/freeglut/freeglut/src/fg_main.c
+++ b/freeglut/freeglut/src/fg_main.c
@@ -27,17 +27,8 @@
 
 #include <GL/freeglut.h>
 #include "fg_internal.h"
-#ifdef HAVE_ERRNO_H
-#    include <errno.h>
-#endif
+#include <errno.h>
 #include <stdarg.h>
-#ifdef  HAVE_VFPRINTF
-#    define VFPRINTF(s,f,a) vfprintf((s),(f),(a))
-#elif defined(HAVE__DOPRNT)
-#    define VFPRINTF(s,f,a) _doprnt((f),(a),(s))
-#else
-#    define VFPRINTF(s,f,a)
-#endif
 
 /*
  * Try to get the maximum value allowed for ints, falling back to the minimum
@@ -289,7 +280,7 @@ void fgError( const char *fmt, ... )
         fprintf( stderr, "freeglut ");
         if( fgState.ProgramName )
             fprintf( stderr, "(%s): ", fgState.ProgramName );
-        VFPRINTF( stderr, fmt, ap );
+        vfprintf( stderr, fmt, ap );
         fprintf( stderr, "\n" );
 
         va_end( ap );
@@ -322,7 +313,7 @@ void fgWarning( const char *fmt, ... )
         fprintf( stderr, "freeglut ");
         if( fgState.ProgramName )
             fprintf( stderr, "(%s): ", fgState.ProgramName );
-        VFPRINTF( stderr, fmt, ap );
+        vfprintf( stderr, fmt, ap );
         fprintf( stderr, "\n" );
 
         va_end( ap );
diff --git a/freeglut/freeglut/src/mswin/fg_cursor_mswin.c b/freeglut/freeglut/src/mswin/fg_cursor_mswin.c
index dc1c0d8..b8ec716 100644
--- a/freeglut/freeglut/src/mswin/fg_cursor_mswin.c
+++ b/freeglut/freeglut/src/mswin/fg_cursor_mswin.c
@@ -143,4 +143,4 @@ void fghPlatformGetCursorPos(const SFG_Window *window, GLboolean client, SFG_XYU
     mouse_pos->X = pos.x;
     mouse_pos->Y = pos.y;
     mouse_pos->Use = GL_TRUE;
-}
\ No newline at end of file
+}
diff --git a/freeglut/freeglut/src/mswin/fg_internal_mswin.h b/freeglut/freeglut/src/mswin/fg_internal_mswin.h
index 1209fc4..0fefb31 100644
--- a/freeglut/freeglut/src/mswin/fg_internal_mswin.h
+++ b/freeglut/freeglut/src/mswin/fg_internal_mswin.h
@@ -48,10 +48,6 @@
 #endif
 
 
-#ifndef HAVE_VFPRINTF
-#define  HAVE_VFPRINTF 1
-#endif
-
 /* MinGW may lack a prototype for ChangeDisplaySettingsEx() (depending on the version?) */
 #if !defined(ChangeDisplaySettingsEx)
 LONG WINAPI ChangeDisplaySettingsExA(LPCSTR,LPDEVMODEA,HWND,DWORD,LPVOID);
diff --git a/freeglut/freeglut/src/mswin/fg_state_mswin.c b/freeglut/freeglut/src/mswin/fg_state_mswin.c
index b8cfb37..913e113 100644
--- a/freeglut/freeglut/src/mswin/fg_state_mswin.c
+++ b/freeglut/freeglut/src/mswin/fg_state_mswin.c
@@ -345,4 +345,4 @@ int *fgPlatformGlutGetModeValues(GLenum eWhat, int *size)
 {
   *size = 0;
   return NULL;
-}
\ No newline at end of file
+}
diff --git a/freeglut/freeglut/src/x11/fg_input_devices_x11.c b/freeglut/freeglut/src/x11/fg_input_devices_x11.c
index 3c7e808..a25de69 100644
--- a/freeglut/freeglut/src/x11/fg_input_devices_x11.c
+++ b/freeglut/freeglut/src/x11/fg_input_devices_x11.c
@@ -33,9 +33,7 @@
 #include <GL/freeglut.h>
 #include "../fg_internal.h"
 
-#ifdef HAVE_ERRNO_H
 #include <errno.h>
-#endif
 #include <sys/ioctl.h>
 #include <stdio.h>
 #include <stdlib.h>
diff --git a/freeglut/freeglut/src/x11/fg_internal_x11.h b/freeglut/freeglut/src/x11/fg_internal_x11.h
index e6b512c..09a238a 100644
--- a/freeglut/freeglut/src/x11/fg_internal_x11.h
+++ b/freeglut/freeglut/src/x11/fg_internal_x11.h
@@ -131,10 +131,10 @@ struct tagSFG_PlatformWindowState
 #    ifdef HAVE_FCNTL_H
 #        include <fcntl.h>
 #    endif
-#    ifdef HAVE_ERRNO_H
-#        include <errno.h>
-#        include <string.h>
-#    endif
+
+#include <errno.h>
+#include <string.h>
+
 #    if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__NetBSD__)
 /* XXX The below hack is done until freeglut's autoconf is updated. */
 #        define HAVE_USB_JS    1
diff --git a/freeglut/freeglut/src/x11/fg_joystick_x11.c b/freeglut/freeglut/src/x11/fg_joystick_x11.c
index 9712d1c..17dc2c3 100644
--- a/freeglut/freeglut/src/x11/fg_joystick_x11.c
+++ b/freeglut/freeglut/src/x11/fg_joystick_x11.c
@@ -115,11 +115,7 @@ void fgPlatformJoystickRawRead( SFG_Joystick* joy, int* buttons, float* axes )
             }
         }
     }
-#    ifdef HAVE_ERRNO_H
     if ( len < 0 && errno != EAGAIN )
-#    else
-    if ( len < 0 )
-#    endif
     {
         perror( joy->pJoystick.os->fname );
         joy->error = 1;
@@ -138,7 +134,6 @@ void fgPlatformJoystickRawRead( SFG_Joystick* joy, int* buttons, float* axes )
 
         if ( status != sizeof( struct js_event ) )
         {
-#  ifdef HAVE_ERRNO_H
             if ( errno == EAGAIN )
             {
                 /* Use the old values */
@@ -149,7 +144,6 @@ void fgPlatformJoystickRawRead( SFG_Joystick* joy, int* buttons, float* axes )
                             sizeof( float ) * joy->num_axes );
                 return;
             }
-#  endif
 
             fgWarning ( "%s", joy->pJoystick.fname );
             joy->error = GL_TRUE;
@@ -241,10 +235,8 @@ void fgPlatformJoystickOpen( SFG_Joystick* joy )
 
     joy->pJoystick.os->fd = open( joy->pJoystick.os->fname, O_RDONLY | O_NONBLOCK);
 
-#ifdef HAVE_ERRNO_H
     if( joy->pJoystick.os->fd < 0 && errno == EACCES )
         fgWarning ( "%s exists but is not readable by you", joy->pJoystick.os->fname );
-#endif
 
     joy->error =( joy->pJoystick.os->fd < 0 );
 
diff --git a/freeglut/freeglut/src/x11/fg_main_x11.c b/freeglut/freeglut/src/x11/fg_main_x11.c
index 6d2d8a7..0e54253 100644
--- a/freeglut/freeglut/src/x11/fg_main_x11.c
+++ b/freeglut/freeglut/src/x11/fg_main_x11.c
@@ -28,17 +28,8 @@
 
 #include <GL/freeglut.h>
 #include "../fg_internal.h"
-#ifdef HAVE_ERRNO_H
-#    include <errno.h>
-#endif
+#include <errno.h>
 #include <stdarg.h>
-#ifdef  HAVE_VFPRINTF
-#    define VFPRINTF(s,f,a) vfprintf((s),(f),(a))
-#elif defined(HAVE__DOPRNT)
-#    define VFPRINTF(s,f,a) _doprnt((f),(a),(s))
-#else
-#    define VFPRINTF(s,f,a)
-#endif
 
 
 /*
@@ -125,10 +116,8 @@ void fgPlatformSleepForEvents( fg_time_t msec )
         wait.tv_usec = (msec % 1000) * 1000;
         err = select( socket+1, &fdset, NULL, NULL, &wait );
 
-#ifdef HAVE_ERRNO_H
         if( ( -1 == err ) && ( errno != EINTR ) )
             fgWarning ( "freeglut select() error: %d", errno );
-#endif
     }
 }
 
diff --git a/freeglut/freeglut/src/x11/fg_spaceball_x11.c b/freeglut/freeglut/src/x11/fg_spaceball_x11.c
index 582a926..e6eabb2 100644
--- a/freeglut/freeglut/src/x11/fg_spaceball_x11.c
+++ b/freeglut/freeglut/src/x11/fg_spaceball_x11.c
@@ -174,10 +174,7 @@ OF SUCH DAMAGE.
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-
-#ifdef HAVE_ERRNO_H
 #include <errno.h>
-#endif
 
 #include <X11/Xlib.h>
 #include <X11/Xutil.h>