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-rw-r--r--chapter06/glibc-inst.xml6
1 files changed, 6 insertions, 0 deletions
diff --git a/chapter06/glibc-inst.xml b/chapter06/glibc-inst.xml
index 2f6326863..69e7e9813 100644
--- a/chapter06/glibc-inst.xml
+++ b/chapter06/glibc-inst.xml
@@ -6,6 +6,12 @@ glibc-&glibc-version; directory and unpack glibc-linuxthreads inside
the glibc-&glibc-version; directory, not in /usr/src as you normally
would do.</para>
+<para>This package is known to behave badly when you have changed it's default
+optimization flags (including the -march and -mcpu options). Glibc is
+best left alone, so we recommend you unsetting CFLAGS, CXXFLAGS and other
+such variables/settings that would change the default optimization that
+it comes with.</para>
+
<para>Install Glibc by running the following commands:</para>
<para><screen><userinput>mknod -m 0666 /dev/null c 1 3 &amp;&amp;</userinput>