Add README for configure.

diff --git a/README.configure.txt b/README.configure.txt
new file mode 100644 (file)
index 0000000..b964cd5
--- /dev/null
+++ b/README.configure.txt
@@ -0,0 +1,22 @@
+PortAudio uses "autoconf" tools to generate Makefiles for Linux and Mac platforms.
+The source for these are configure.in and Makefile.in
+If you modify either of these files then please run this command before
+testing and checking in your changes.
+
+   autoreconf -if
+
+Then test a build by doing:
+   
+   ./configure
+   make clean
+   make
+   sudo make install
+
+then check in the related files that are modified.
+These might include files like:
+
+   configure
+   config.guess
+   depcomp
+   install.sh
+