--- h/powerpc-macosx.h.orig	2005-05-07 07:56:55.000000000 +1000
+++ h/powerpc-macosx.h	2011-04-03 17:19:00.000000000 +1000
@@ -103,7 +103,7 @@ do {                                    
 /* #define SIG_STACK_SIZE (SIGSTKSZ/sizeof(double)) */
 #define SETUP_SIG_STACK                                \
 {                                                      \
-static struct sigaltstack estack;                      \
+static stack_t estack;                      \
 static double estack_buf [SIG_STACK_SIZE];             \
 bzero(estack_buf, sizeof(estack_buf));                 \
 estack.ss_sp = (char *) &estack_buf[SIG_STACK_SIZE-1]; \
