From 852c866d1a969af204c5c77f457b31cabff89508 Mon Sep 17 00:00:00 2001
From: Alan Grossfield <alan_grossfield@urmc.rochester.edu>
Date: Fri, 21 Oct 2022 16:46:49 -0400
Subject: [PATCH] document cmake clean per #87

---
 INSTALL.md | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/INSTALL.md b/INSTALL.md
index 985d1c89f..c20175076 100644
--- a/INSTALL.md
+++ b/INSTALL.md
@@ -136,6 +136,15 @@ ccmake ..
 Going forward, we plan to focus on conda as our preferred environment, and
 eventually plan to support direct installation via conda.
 
+If you want to clean out the build generated by cmake, cd into the build directory and 
+say 
+```
+cmake --build . --target clean
+```
+
+If you updated an existing git repo from loos 3.x, we suggest running `scons -c; scons -c config` 
+before building loos.
+
 ## Where's my stuff?
 
 Installing into the conda distribution behaves somewhat differently from a