Remove the --enable-right-tz configure option.

 Make it a run-time autodetection instead.
 Update doc.
 Thanks to Paul Jarc for the suggestion.

1 files changed, 17 insertions, 0 deletions

diff --git a/src/libstddjb/skalibs_tzisright.c b/src/libstddjb/skalibs_tzisright.c
new file mode 100644
index 0000000..f8414a6
--- /dev/null
+++ b/src/libstddjb/skalibs_tzisright.c
@@ -0,0 +1,17 @@
+/* ISC license. */
+
+#include <sys/types.h>
+#include <time.h>
+#include "djbtime-internal.h"
+
+int skalibs_tzisright ()
+{
+  static int tzisright = -1 ;
+  if (tzisright < 0)
+  {
+    struct tm tm ;
+    time_t t = 78796800 ;
+    if (localtime_r(&t, &tm)) tzisright = tm.tm_sec == 60 ;
+  }
+  return tzisright ;
+}