Fix macOS build.

I'd put the rtc_wkalarm struct in the globals to get it zeroed for
free, but since there's no such type on macOS, that breaks the
build. Rather than define a bogus struct in portability.h, I've
gone for making it an explicitly-zeroed local. (And I've sorted the
locals largest-first.)

Note that the use of struct rtc_time as if it was the same as struct
tm in this code follows the existing code in hwclock, but I worry
that we're going to have trouble with that because of the extra
tm_gmtoff and tm_zone fields in struct tm. But that's a worry for
another day...

This patch also removes the CONFIG_CP_PRESERVE from the macos_miniconfig,
since that option was removed a while back.

1 files changed, 2 insertions, 3 deletions

diff --git a/toys/pending/rtcwake.c b/toys/pending/rtcwake.c
index 0929d51f..0da1de6b 100644
--- a/toys/pending/rtcwake.c
+++ b/toys/pending/rtcwake.c
@@ -37,14 +37,13 @@ config RTCWAKE
 GLOBALS(
   long long t, s;
   char *m, *d;
-
-  struct rtc_wkalrm alarm;
 )
 
 void rtcwake_main(void)
 {
-  time_t now, rtc_now, then;
+  struct rtc_wkalrm alarm = {};
   struct tm rtc_tm;
+  time_t now, rtc_now, then;
   int fd, utc;
 
   if (FLAG(list_modes)) {