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diff -ur mpfr-3.1.5.orig/src/mparam_h.in mpfr-3.1.5/src/mparam_h.in
--- mpfr-3.1.5.orig/src/mparam_h.in Tue Sep 27 16:58:15 2016
+++ mpfr-3.1.5/src/mparam_h.in Wed Sep 28 16:53:41 2016
@@ -27,7 +27,9 @@
for example with gcc -dM -E -xc /dev/null
As of gcc 4.2, you can also use: -march=native or -mtune=native */
-#if defined (__tune_pentium4__) /* Threshold for Pentium 4 */
+#if 1 /* no processor specific optimization for TeX Live */
+#define MPFR_TUNE_CASE "default"
+#elif defined (__tune_pentium4__) /* Threshold for Pentium 4 */
#define MPFR_TUNE_CASE "src/x86_64/pentium4/mparam.h"
#include "x86_64/pentium4/mparam.h"
diff -ur mpfr-3.1.5.orig/src/mpfr-impl.h mpfr-3.1.5/src/mpfr-impl.h
--- mpfr-3.1.5.orig/src/mpfr-impl.h Tue Sep 27 16:58:15 2016
+++ mpfr-3.1.5/src/mpfr-impl.h Wed Sep 28 16:55:05 2016
@@ -23,6 +23,11 @@
#ifndef __MPFR_IMPL_H__
#define __MPFR_IMPL_H__
+/* Include MPFR 'config.h' before ANY system headers */
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
/* Let's include some standard headers unconditionally as they are
already needed by several source files or when some options are
enabled/disabled, and it is easy to forget them (some configure
@@ -55,12 +60,6 @@
/******************************************************
****************** Include files *********************
******************************************************/
-
-/* Include 'config.h' before using ANY configure macros if needed
- NOTE: It isn't MPFR 'config.h', but GMP's one! */
-#ifdef HAVE_CONFIG_H
-# include "config.h"
-#endif
/* For the definition of MPFR_THREAD_ATTR. GCC/ICC detection macros are
no longer used, as they sometimes gave incorrect information about
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