1dnl from autoconf 2.13 acspecific.m4, with changes to check for daylight 2 3AC_DEFUN([AC_STRUCT_TIMEZONE_DAYLIGHT], 4[AC_REQUIRE([AC_STRUCT_TM])dnl 5AC_CACHE_CHECK([for tm_zone in struct tm], ac_cv_struct_tm_zone, 6[AC_TRY_COMPILE([#include <sys/types.h> 7#include <$ac_cv_struct_tm>], [struct tm tm; tm.tm_zone;], 8 ac_cv_struct_tm_zone=yes, ac_cv_struct_tm_zone=no)]) 9if test "$ac_cv_struct_tm_zone" = yes; then 10 AC_DEFINE(HAVE_TM_ZONE,1,[HAVE_TM_ZONE]) 11fi 12 13AC_CACHE_CHECK(for tzname, ac_cv_var_tzname, 14[AC_TRY_LINK( 15changequote(<<, >>)dnl 16<<#include <time.h> 17#ifndef tzname /* For SGI. */ 18extern char *tzname[]; /* RS6000 and others reject char **tzname. */ 19#endif>>, 20changequote([, ])dnl 21[atoi(*tzname);], ac_cv_var_tzname=yes, ac_cv_var_tzname=no)]) 22 if test $ac_cv_var_tzname = yes; then 23 AC_DEFINE(HAVE_TZNAME,1,[HAVE_TZNAME]) 24 fi 25 26AC_CACHE_CHECK([for tm_isdst in struct tm], ac_cv_struct_tm_isdst, 27[AC_TRY_COMPILE([#include <sys/types.h> 28#include <$ac_cv_struct_tm>], [struct tm tm; tm.tm_isdst;], 29 ac_cv_struct_tm_isdst=yes, ac_cv_struct_tm_isdst=no)]) 30if test "$ac_cv_struct_tm_isdst" = yes; then 31 AC_DEFINE(HAVE_TM_ISDST,1,[HAVE_TM_ISDST]) 32fi 33 34AC_CACHE_CHECK(for daylight, ac_cv_var_daylight, 35[AC_TRY_LINK( 36changequote(<<, >>)dnl 37<<#include <time.h> 38#ifndef daylight /* In case IRIX #defines this, too */ 39extern int daylight; 40#endif>>, 41changequote([, ])dnl 42[atoi(daylight);], ac_cv_var_daylight=yes, ac_cv_var_daylight=no)]) 43 if test $ac_cv_var_daylight = yes; then 44 AC_DEFINE(HAVE_DAYLIGHT,1,[HAVE_DAYLIGHT]) 45 fi 46]) 47 48AC_DEFUN([AC_STRUCT_OPTION_GETOPT_H], 49[AC_CACHE_CHECK([for struct option in getopt], ac_cv_struct_option_getopt_h, 50[AC_TRY_COMPILE([#include <getopt.h>], [struct option op; op.name;], 51 ac_cv_struct_option_getopt_h=yes, ac_cv_struct_option_getopt_h=no)]) 52if test "$ac_cv_struct_option_getopt_h" = yes; then 53 AC_DEFINE(HAVE_STRUCT_OPTION,1,[HAVE_STRUCT_OPTION]) 54fi 55]) 56