4 files changed, 7 insertions, 9 deletions
diff --git a/sysdeps/m68k/fpu/fenvbits.h b/sysdeps/m68k/fpu/bits/fenv.h
index b653b1aafd..ce071b93ff 100644
--- a/sysdeps/m68k/fpu/fenvbits.h
+++ b/sysdeps/m68k/fpu/bits/fenv.h
@@ -16,10 +16,10 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
-/* This file should never be included directly.  */
+#ifndef _FENV_H
+#error "Never use <bits/fenv.h> directly; include <fenv.h> instead."
+#endif
 
-#ifndef _FENVBITS_H
-#define _FENVBITS_H	1
 
 /* Define bits representing the exception.  We use the bit positions of
    the appropriate bits in the FPSR Accrued Exception Byte.  */
@@ -76,5 +76,3 @@ fenv_t;
 /* Floating-point environment where none of the exceptions are masked.  */
 # define FE_NOMASK_ENV	((fenv_t *) -2)
 #endif
-
-#endif /* fenvbits.h */
diff --git a/sysdeps/m68k/fpu/mathbits.h b/sysdeps/m68k/fpu/bits/mathdef.h
index 049662319a..4d07176405 100644
--- a/sysdeps/m68k/fpu/mathbits.h
+++ b/sysdeps/m68k/fpu/bits/mathdef.h
@@ -16,8 +16,10 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
-#ifndef _MATHBITS_H
-#define _MATHBITS_H	1
+#ifndef _MATH_H
+#error "Never use <bits/mathdef.h> directly; include <math.h> instead"
+#endif
+
 
 /* The m68k FPUs evaluate all values in the 96 bit floating-point format
    which is also available for the user as `long double'.  Therefore we
@@ -32,5 +34,3 @@ typedef long double double_t;	/* `double' expressions are evaluated as
 
 /* Define `INFINITY' as value of type `float_t'.  */
 #define INFINITY	HUGE_VALL
-
-#endif /* mathbits.h */
diff --git a/sysdeps/m68k/fpu/__math.h b/sysdeps/m68k/fpu/bits/mathinline.h
index bdeaa9efb0..bdeaa9efb0 100644
--- a/sysdeps/m68k/fpu/__math.h
+++ b/sysdeps/m68k/fpu/bits/mathinline.h
diff --git a/sysdeps/m68k/fpu/switch/__math.h b/sysdeps/m68k/fpu/switch/bits/mathinline.h
index c0f6966981..c0f6966981 100644
--- a/sysdeps/m68k/fpu/switch/__math.h
+++ b/sysdeps/m68k/fpu/switch/bits/mathinline.h