Do not default to _POSIX_MODE

libm/Makefile.in

@@ -21,7 +21,7 @@
 #
 
 CFLAGS-libm := -DNOT_IN_libc -DIS_IN_libm $(SSP_ALL_CFLAGS)
-CFLAGS-libm += -D_IEEE_LIBM -D_ISOC99_SOURCE -D_SVID_SOURCE -D_POSIX_MODE
+CFLAGS-libm += -D_IEEE_LIBM -D_ISOC99_SOURCE -D_SVID_SOURCE
 
 LDFLAGS-libm.so := $(LDFLAGS)
 

libm/w_scalb.c

@@ -20,7 +20,7 @@ static char rcsid[] = "$NetBSD: w_scalb.c,v 1.6 1995/05/10 20:49:48 jtc Exp $";
  * should use scalbn() instead.
  */
 
-#include "math.h"
+#include <math.h>
 #include "math_private.h"
 
 #include <errno.h>