Adding upstream version 1:2.3.19.1+dfsg1.upstream/1%2.3.19.1+dfsg1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 42 insertions, 0 deletions

diff --git a/m4/gmtime_max.m4 b/m4/gmtime_max.m4
new file mode 100644
index 0000000..1613cb2
--- /dev/null
+++ b/m4/gmtime_max.m4
@@ -0,0 +1,42 @@
+dnl * how large time_t values does gmtime() accept?
+AC_DEFUN([DOVECOT_GMTIME_MAX], [
+  AC_CACHE_CHECK([how large time_t values gmtime() accepts],i_cv_gmtime_max_time_t,[
+    AC_RUN_IFELSE([AC_LANG_SOURCE([[
+      #include <stdio.h>
+      #include <time.h>
+      int main() {
+        FILE *f;
+        int bits;
+    
+        for (bits = 1; bits < sizeof(time_t)*8; bits++) {
+  	time_t t = ((time_t)1 << bits) - 1;
+  	if (gmtime(&t) == NULL) {
+  	  bits--;
+  	  break;
+  	}
+        }
+        if (bits > 40) {
+  	/* Solaris 9 breaks after 55 bits. Perhaps other systems break earlier.
+  	   Let's just do the same as Cyrus folks and limit it to 40 bits. */
+  	bits = 40;
+        }
+    
+        f = fopen("conftest.temp", "w");
+        if (f == NULL) {
+  	perror("fopen()");
+  	return 1;
+        }
+        fprintf(f, "%d", bits);
+        fclose(f);
+        return 0;
+      }
+    ]])],[
+      i_cv_gmtime_max_time_t=`cat conftest.temp`
+      rm -f conftest.temp
+    ], [
+      printf "check failed, assuming "
+      i_cv_gmtime_max_time_t=31
+    ],[])
+  ])
+  AC_DEFINE_UNQUOTED(TIME_T_MAX_BITS, $i_cv_gmtime_max_time_t, [max. time_t bits gmtime() can handle])
+])