Merge tag 'snapshot-start' into stable

[gnulib.git] / m4 / count-trailing-zeros.m4

diff --git a/m4/count-trailing-zeros.m4 b/m4/count-trailing-zeros.m4
new file mode 100644 (file)
index 0000000..617159e
--- /dev/null
+++ b/m4/count-trailing-zeros.m4
@@ -0,0 +1,12 @@
+# count-trailing-zeros.m4
+dnl Copyright (C) 2013-2014 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_COUNT_TRAILING_ZEROS],
+[
+  dnl We don't need (and can't compile) count_trailing_zeros_ll
+  dnl unless the type 'unsigned long long int' exists.
+  AC_REQUIRE([AC_TYPE_UNSIGNED_LONG_LONG_INT])
+])