Added tests for isdst, gmtoffset, and zone in struct tm.

@@ -21,6 +21,15 @@
 /* Define if have snprintf() */
 #undef HAVE_SNPRINTF
 
+/* Define if struct tm has a tm_zone member */
+#undef HAVE_TM_ZONE
+
+/* Define if struct tm has a tm_isdst member */
+#undef HAVE_TM_ISDST
+
+/* Define if struct tm has a tm_gmtoff member */
+#undef HAVE_TM_GMTOFF
+
 /* Define if enable Posix Thread */
 #undef WITH_PTHREAD
 

@@ -8,6 +8,8 @@ AC_PROG_CC
 AC_PROG_INSTALL
 AC_PROG_LN_S
 AM_PROG_LIBTOOL
+AC_PROG_YACC
+AM_PROG_LEX
 
 dnl Check for arguments
 AC_ARG_ENABLE(pam,
@@ -68,6 +70,10 @@ AC_TYPE_PID_T
 AC_TYPE_SIZE_T
 AC_TYPE_SIGNAL
 AC_DECL_SYS_SIGLIST
+AC_STRUCT_TIMEZONE
+sr_STRUCT_TM_ZONE
+sr_STRUCT_TM_GMTOFF
+sr_STRUCT_TM_ISDST
 
 dnl Check for working functions
 
@@ -162,4 +168,4 @@ dnl Output Makefiles
 AC_OUTPUT(Makefile mailutils.spec include/Makefile include/mailutils/Makefile
  m4/Makefile doc/Makefile argp/Makefile lib/Makefile mailbox/Makefile
  imap4d/Makefile mailbox/include/Makefile from/Makefile mail/Makefile
- pop3d/Makefile frm/Makefile)
+ pop3d/Makefile frm/Makefile sieve/Makefile)

+AC_DEFUN(sr_STRUCT_TM_GMTOFF,
+[AC_REQUIRE([AC_STRUCT_TM])dnl
+AC_CACHE_CHECK([for tm_gmtoff in struct tm], ac_cv_struct_tm_gmtoff,
+[AC_TRY_COMPILE([#include <sys/types.h>
+#include <$ac_cv_struct_tm>], [struct tm tm; tm.tm_gmtoff;],
+  ac_cv_struct_tm_gmtoff=yes, ac_cv_struct_tm_gmtoff=no)])
+if test "$ac_cv_struct_tm_gmtoff" = yes; then
+  AC_DEFINE(HAVE_TM_GMTOFF)
+fi
+])
+

+AC_DEFUN(sr_STRUCT_TM_ISDST,
+[AC_REQUIRE([AC_STRUCT_TM])dnl
+AC_CACHE_CHECK([for tm_isdst in struct tm], ac_cv_struct_tm_isdst,
+[AC_TRY_COMPILE([#include <sys/types.h>
+#include <$ac_cv_struct_tm>], [struct tm tm; tm.tm_isdst;],
+  ac_cv_struct_tm_isdst=yes, ac_cv_struct_tm_isdst=no)])
+if test "$ac_cv_struct_tm_isdst" = yes; then
+  AC_DEFINE(HAVE_TM_ISDST)
+fi
+])
+

+AC_DEFUN(sr_STRUCT_TM_ZONE,
+[AC_REQUIRE([AC_STRUCT_TM])dnl
+AC_CACHE_CHECK([for tm_zone in struct tm], ac_cv_struct_tm_zone,
+[AC_TRY_COMPILE([#include <sys/types.h>
+#include <$ac_cv_struct_tm>], [struct tm tm; tm.tm_zone;],
+  ac_cv_struct_tm_zone=yes, ac_cv_struct_tm_zone=no)])
+if test "$ac_cv_struct_tm_zone" = yes; then
+  AC_DEFINE(HAVE_TM_ZONE)
+fi
+])
+