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diff --git a/gl/m4/fpieee.m4 b/gl/m4/fpieee.m4
deleted file mode 100644
index e11ac9f09c..0000000000
--- a/gl/m4/fpieee.m4
+++ /dev/null
@@ -1,54 +0,0 @@
-# fpieee.m4 serial 2  -*- coding: utf-8 -*-
-dnl Copyright (C) 2007, 2009-2016 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.
-
-dnl IEEE 754 standardized three items:
-dnl - The formats of single-float and double-float - nowadays commonly
-dnl   available as 'float' and 'double' in C and C++.
-dnl   No autoconf test needed.
-dnl - The overflow and division by zero behaviour: The result are values
-dnl   '±Inf' and 'NaN', rather than exceptions as it was before.
-dnl   This file provides an autoconf macro for ensuring this behaviour of
-dnl   floating-point operations.
-dnl - A set of conditions (overflow, underflow, inexact, etc.) which can
-dnl   be configured to trigger an exception.
-dnl   This cannot be done in a portable way: it depends on the compiler,
-dnl   libc, kernel, and CPU.  No autoconf macro is provided for this.
-
-dnl Ensure non-trapping behaviour of floating-point overflow and
-dnl floating-point division by zero.
-dnl (For integer overflow, see gcc's -ftrapv option; for integer division by
-dnl zero, see the autoconf macro in intdiv0.m4.)
-
-AC_DEFUN([gl_FP_IEEE],
-[
-  AC_REQUIRE([AC_PROG_CC])
-  AC_REQUIRE([AC_CANONICAL_HOST])
-  # IEEE behaviour is the default on all CPUs except Alpha and SH
-  # (according to the test results of Bruno Haible's ieeefp/fenv_default.m4
-  # and the GCC 4.1.2 manual).
-  case "$host_cpu" in
-    alpha*)
-      # On Alpha systems, a compiler option provides the behaviour.
-      # See the ieee(3) manual page, also available at
-      # <http://h30097.www3.hp.com/docs/base_doc/DOCUMENTATION/V51B_HTML/MAN/MAN3/0600____.HTM>
-      if test -n "$GCC"; then
-        # GCC has the option -mieee.
-        # For full IEEE compliance (rarely needed), use option -mieee-with-inexact.
-        CPPFLAGS="$CPPFLAGS -mieee"
-      else
-        # Compaq (ex-DEC) C has the option -ieee, equivalent to -ieee_with_no_inexact.
-        # For full IEEE compliance (rarely needed), use option -ieee_with_inexact.
-        CPPFLAGS="$CPPFLAGS -ieee"
-      fi
-      ;;
-    sh*)
-      if test -n "$GCC"; then
-        # GCC has the option -mieee.
-        CPPFLAGS="$CPPFLAGS -mieee"
-      fi
-      ;;
-  esac
-])