1 files changed, 61 insertions, 0 deletions
diff --git a/acinclude.m4 b/acinclude.m4
new file mode 100644
index 0000000..3024271
--- /dev/null
+++ b/acinclude.m4
@@ -0,0 +1,61 @@
+dnl from autoconf 2.13 acspecific.m4, with changes to check for daylight
+
+AC_DEFUN([AC_STRUCT_TIMEZONE_DAYLIGHT],
+[AC_REQUIRE([AC_STRUCT_TM])dnl
+AC_CACHE_CHECK([for tm_zone in struct tm], ac_cv_struct_tm_zone,
+[AC_COMPILE_IFELSE(
+[AC_LANG_PROGRAM([#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,1,[HAVE_TM_ZONE])
+fi
+
+# On SGI, apparently tzname is a #define, but that's ok, AC_CHECK_DECL will
+# consider it declared and we won't give our own extern.
+AC_CHECK_DECLS([tzname], , , [#include <time.h>])
+AC_CACHE_CHECK(for tzname, ac_cv_var_tzname,
+[AC_LINK_IFELSE(
+[AC_LANG_PROGRAM([#include <time.h>],
+[[#if !HAVE_DECL_TZNAME
+extern char *tzname[];
+#endif
+return tzname[0][0];]])], [ac_cv_var_tzname=yes], [ac_cv_var_tzname=no])])
+  if test $ac_cv_var_tzname = yes; then
+    AC_DEFINE(HAVE_TZNAME,1,[HAVE_TZNAME])
+  fi
+
+AC_CACHE_CHECK([for tm_isdst in struct tm], ac_cv_struct_tm_isdst,
+[AC_COMPILE_IFELSE(
+[AC_LANG_PROGRAM([#include <sys/types.h>
+#include <$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,1,[HAVE_TM_ISDST])
+fi
+
+
+AC_CHECK_DECLS([daylight], , , [#include <time.h>
+#include <stdlib.h>])
+AC_CACHE_CHECK(for daylight, ac_cv_var_daylight,
+[AC_LINK_IFELSE(
+[AC_LANG_PROGRAM([#include <time.h>
+#include <stdlib.h>],
+[#if !HAVE_DECL_DAYLIGHT
+extern int daylight;
+#endif
+daylight = atoi("1");])], ac_cv_var_daylight=yes, ac_cv_var_daylight=no)])
+  if test $ac_cv_var_daylight = yes; then
+    AC_DEFINE(HAVE_DAYLIGHT,1,[HAVE_DAYLIGHT])
+  fi
+])
+
+AC_DEFUN([AC_STRUCT_OPTION_GETOPT_H],
+[AC_CACHE_CHECK([for struct option in getopt], ac_cv_struct_option_getopt_h,
+[AC_COMPILE_IFELSE(
+[AC_LANG_PROGRAM([#include <getopt.h>], [struct option op; op.name;])],
+  ac_cv_struct_option_getopt_h=yes, ac_cv_struct_option_getopt_h=no)])
+if test "$ac_cv_struct_option_getopt_h" = yes; then
+  AC_DEFINE(HAVE_STRUCT_OPTION,1,[HAVE_STRUCT_OPTION])
+fi
+])