Add a caution about using experimental versions of gnu binutils when
building Cygwin.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19117 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/docs/CFEBuildInstrs.html b/docs/CFEBuildInstrs.html
index 9f4b9d0..d895583 100644
--- a/docs/CFEBuildInstrs.html
+++ b/docs/CFEBuildInstrs.html
@@ -71,7 +71,15 @@
installation includes GCC 3.3.3 we <i>strongly</i> recommend that you download
GCC 3.4.3, build it separately, and use it for compiling LLVM CFE. This has been
shown to work correctly.</p>
-</div>
+<p>Some versions of Cygwin utilize an experimental version of GNU binutils that
+will cause the GNU <tt>ld</tt> linker to fail an assertion when linking
+components of the libstdc++. It is recommended that you replace the entire
+binutils package with version 2.15 such that "<tt>ld --version</tt>" responds
+with<br/>
+<pre>GNU ld version 2.15</pre>
+not with:<br/>
+<pre>GNU ld version 2.15.91 20040725</pre>
+</p></div>
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