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_COMPILE_IFELSE( 7[AC_LANG_PROGRAM([#include <sys/types.h> 8#include <$ac_cv_struct_tm>], [struct tm tm; tm.tm_zone;])], 9 ac_cv_struct_tm_zone=yes, ac_cv_struct_tm_zone=no)]) 10if test "$ac_cv_struct_tm_zone" = yes; then 11 AC_DEFINE(HAVE_TM_ZONE,1,[HAVE_TM_ZONE]) 12fi 13 14# On SGI, apparently tzname is a #define, but that's ok, AC_CHECK_DECL will 15# consider it declared and we won't give our own extern. 16AC_CHECK_DECLS([tzname], , , [#include <time.h>]) 17AC_CACHE_CHECK(for tzname, ac_cv_var_tzname, 18[AC_LINK_IFELSE( 19[AC_LANG_PROGRAM([#include <time.h>], 20[[#if !HAVE_DECL_TZNAME 21extern char *tzname[]; 22#endif 23return tzname[0][0];]])], [ac_cv_var_tzname=yes], [ac_cv_var_tzname=no])]) 24 if test $ac_cv_var_tzname = yes; then 25 AC_DEFINE(HAVE_TZNAME,1,[HAVE_TZNAME]) 26 fi 27 28AC_CACHE_CHECK([for tm_isdst in struct tm], ac_cv_struct_tm_isdst, 29[AC_COMPILE_IFELSE( 30[AC_LANG_PROGRAM([#include <sys/types.h> 31#include <$ac_cv_struct_tm>], [struct tm tm; tm.tm_isdst;])], 32 ac_cv_struct_tm_isdst=yes, ac_cv_struct_tm_isdst=no)]) 33if test "$ac_cv_struct_tm_isdst" = yes; then 34 AC_DEFINE(HAVE_TM_ISDST,1,[HAVE_TM_ISDST]) 35fi 36 37 38AC_CHECK_DECLS([daylight], , , [#include <time.h> 39#include <stdlib.h>]) 40AC_CACHE_CHECK(for daylight, ac_cv_var_daylight, 41[AC_LINK_IFELSE( 42[AC_LANG_PROGRAM([#include <time.h> 43#include <stdlib.h>], 44[#if !HAVE_DECL_DAYLIGHT 45extern int daylight; 46#endif 47daylight = atoi("1");])], ac_cv_var_daylight=yes, ac_cv_var_daylight=no)]) 48 if test $ac_cv_var_daylight = yes; then 49 AC_DEFINE(HAVE_DAYLIGHT,1,[HAVE_DAYLIGHT]) 50 fi 51]) 52 53AC_DEFUN([AC_STRUCT_OPTION_GETOPT_H], 54[AC_CACHE_CHECK([for struct option in getopt], ac_cv_struct_option_getopt_h, 55[AC_COMPILE_IFELSE( 56[AC_LANG_PROGRAM([#include <getopt.h>], [struct option op; op.name;])], 57 ac_cv_struct_option_getopt_h=yes, ac_cv_struct_option_getopt_h=no)]) 58if test "$ac_cv_struct_option_getopt_h" = yes; then 59 AC_DEFINE(HAVE_STRUCT_OPTION,1,[HAVE_STRUCT_OPTION]) 60fi 61]) 62