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-rw-r--r--chapter05/binutils-inst.xml6
-rw-r--r--chapter05/gcc-inst.xml6
2 files changed, 12 insertions, 0 deletions
diff --git a/chapter05/binutils-inst.xml b/chapter05/binutils-inst.xml
index 6e6d242d2..5205ad482 100644
--- a/chapter05/binutils-inst.xml
+++ b/chapter05/binutils-inst.xml
@@ -1,6 +1,12 @@
<sect2>
<title>Installation of Binutils</title>
+<para>This package is known to behave badly when you have changed it's default
+optimization flags (including the -march and -mcpu options). Binutils 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 Binutils by running the following commands:</para>
<para><screen><userinput>./configure --prefix=$LFS/usr --disable-nls &amp;&amp;</userinput>
diff --git a/chapter05/gcc-inst.xml b/chapter05/gcc-inst.xml
index 253a12df8..575ee0141 100644
--- a/chapter05/gcc-inst.xml
+++ b/chapter05/gcc-inst.xml
@@ -1,6 +1,12 @@
<sect2>
<title>Installation of GCC</title>
+<para>This package is known to behave badly when you have changed it's default
+optimization flags (including the -march and -mcpu options). GCC 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 GCC by running the following commands:</para>
<para><screen><userinput>patch -Np1 -i ../gcc-&gcc-patch-version;.patch &amp;&amp;</userinput>