1 dnl from autoconf 2.13 acspecific.m4, with changes to check for daylight
3 AC_DEFUN([AC_STRUCT_TIMEZONE_DAYLIGHT],
4 [AC_REQUIRE([AC_STRUCT_TM])dnl
5 AC_CACHE_CHECK([for tm_zone in struct tm], ac_cv_struct_tm_zone,
6 [AC_TRY_COMPILE([#include <sys/types.h>
7 #include <$ac_cv_struct_tm>], [struct tm tm; tm.tm_zone;],
8 ac_cv_struct_tm_zone=yes, ac_cv_struct_tm_zone=no)])
9 if test "$ac_cv_struct_tm_zone" = yes; then
10 AC_DEFINE(HAVE_TM_ZONE,1,[HAVE_TM_ZONE])
13 # On SGI, apparently tzname is a #define, but that's ok, AC_CHECK_DECL will
14 # consider it declared and we won't give our own extern.
15 AC_CHECK_DECLS([tzname], , , [#include <time.h>])
16 AC_CACHE_CHECK(for tzname, ac_cv_var_tzname,
20 extern char *tzname[];
22 [return tzname[0][0];], [ac_cv_var_tzname=yes], [ac_cv_var_tzname=no])])
23 if test $ac_cv_var_tzname = yes; then
24 AC_DEFINE(HAVE_TZNAME,1,[HAVE_TZNAME])
27 AC_CACHE_CHECK([for tm_isdst in struct tm], ac_cv_struct_tm_isdst,
28 [AC_TRY_COMPILE([#include <sys/types.h>
29 #include <$ac_cv_struct_tm>], [struct tm tm; tm.tm_isdst;],
30 ac_cv_struct_tm_isdst=yes, ac_cv_struct_tm_isdst=no)])
31 if test "$ac_cv_struct_tm_isdst" = yes; then
32 AC_DEFINE(HAVE_TM_ISDST,1,[HAVE_TM_ISDST])
36 AC_CHECK_DECLS([daylight], , , [#include <time.h>])
37 AC_CACHE_CHECK(for daylight, ac_cv_var_daylight,
39 changequote(<<, >>)dnl
41 #if !HAVE_DECL_DAYLIGHT
45 [atoi(daylight);], ac_cv_var_daylight=yes, ac_cv_var_daylight=no)])
46 if test $ac_cv_var_daylight = yes; then
47 AC_DEFINE(HAVE_DAYLIGHT,1,[HAVE_DAYLIGHT])
51 AC_DEFUN([AC_STRUCT_OPTION_GETOPT_H],
52 [AC_CACHE_CHECK([for struct option in getopt], ac_cv_struct_option_getopt_h,
53 [AC_TRY_COMPILE([#include <getopt.h>], [struct option op; op.name;],
54 ac_cv_struct_option_getopt_h=yes, ac_cv_struct_option_getopt_h=no)])
55 if test "$ac_cv_struct_option_getopt_h" = yes; then
56 AC_DEFINE(HAVE_STRUCT_OPTION,1,[HAVE_STRUCT_OPTION])