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diff --git a/gnulib b/gnulib
deleted file mode 160000
-Subproject 443bc5ffcf7429e557f4a371b0661abe98ddbc1
diff --git a/gnulib/lib/imaxdiv.c b/gnulib/lib/imaxdiv.c
new file mode 100644
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+++ b/gnulib/lib/imaxdiv.c
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+/* imaxdiv() function: division of 'intmax_t'.
+   Copyright (C) 2006, 2009-2011 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <inttypes.h>
+
+#include <stdlib.h>
+
+imaxdiv_t
+imaxdiv (intmax_t numer, intmax_t denom)
+{
+  imaxdiv_t result;
+
+  result.quot = numer / denom;
+  result.rem = numer % denom;
+
+  /* Verify the requirements of ISO C 99 section 6.5.5 paragraph 6:
+     "When integers are divided, the result of the / operator is the
+      algebraic quotient with any fractional part discarded.  (This is
+      often called "truncation toward zero".)  If the quotient a/b is
+      representable, the expression (a/b)*b + a%b shall equal a."  */
+  if (!(denom == 0
+        || (INTMAX_MIN + INTMAX_MAX < 0
+            && denom == -1
+            && numer < - INTMAX_MAX)))
+    {
+      if (!(result.quot * denom + result.rem == numer))
+        /* The compiler's implementation of / and % is broken.  */
+        abort ();
+      if (!(numer >= 0
+            ? result.rem >= 0
+              && (denom >= 0
+                  ? result.rem < denom
+                  : /* Don't write  result.rem < - denom,
+                       as it gives integer overflow if denom == INTMAX_MIN.  */
+                    - result.rem > denom)
+            : result.rem <= 0
+              && (denom >= 0
+                  ? result.rem > - denom
+                  : result.rem > denom)))
+        /* The compiler's implementation of / and % may be ok according to
+           C89, but not to C99.  Please report this to <bug-gnulib@ngu.org>.
+           This might be a big portability problem.  */
+        abort ();
+    }
+
+  return result;
+}