From 98bed7f8bbc60fcb95f171eefcf70b11ad8628fc Mon Sep 17 00:00:00 2001
From: Bruce Dubbs <bdubbs@linuxfromscratch.org>
Date: Thu, 7 Apr 2016 20:28:40 +0000
Subject: Add a caution in the gmp section about possible "Illegal Instruction"
 errors if the host is misidentified or the libraries are copied to different
 systems.

git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@11044 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689
---
 chapter06/gmp.xml | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'chapter06/gmp.xml')

diff --git a/chapter06/gmp.xml b/chapter06/gmp.xml
index 7d353d90c..da655db6a 100644
--- a/chapter06/gmp.xml
+++ b/chapter06/gmp.xml
@@ -90,6 +90,13 @@ make html</userinput></screen>
     <para>Test the results:</para>
 
 <screen><userinput remap="test">make check 2>&amp;1 | tee gmp-check-log</userinput></screen>
+ 
+    <caution><para>The code in gmp is highly optimized for the processor where
+    it is built. Occasionally the code that detects the processor misidentifies
+    the system capabilities and there will be errors in the tests or other
+    applications using the gmp libraries with the message "Illegal
+    instruction".  In this case, gmp should be reconfigured with the option
+    --build=x86_64-unknown-linux-gnu and rebuilt.</para></caution>
 
     <para>Ensure that all 190 tests in the test suite passed.
     Check the results by issuing the following command:</para>
-- 
cgit v1.2.3-54-g00ecf