From c940deb83723ae8d3a791234fa8249d55dad7365 Mon Sep 17 00:00:00 2001
From: Bruno Haible <bruno@clisp.org>
Date: Wed, 28 Jun 2000 16:33:56 +0000
Subject: [PATCH] CXXFLAGS without -O don't work. Thomas Roessler had the
 painful experience.

---
 doc/cln.tex | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/doc/cln.tex b/doc/cln.tex
index 6c2ef22..f65cb3f 100644
--- a/doc/cln.tex
+++ b/doc/cln.tex
@@ -386,6 +386,10 @@ commands, you have to @code{export} the environment variables before
 calling @code{configure}. In a @code{csh} shell, you have to use the
 @samp{setenv} command for setting each of the environment variables.
 
+Currently CLN works only with the GNU @code{g++} compiler, and only in
+optimizing mode. So you should specify at least @code{-O} in the CXXFLAGS,
+or no CXXFLAGS at all. (If CXXFLAGS is not set, CLN will use @code{-O}.)
+
 On Linux, @code{g++} needs 15 MB to compile the tests. So you should better
 have 17 MB swap space and 1 MB room in $TMPDIR.