Do the reading!

* autoconf basics

need GNU M4 + autoconf to build scripts
	NOT to run them!

>Files used in preparing a software package for distribution:

your source files --> [autoscan*] --> [configure.scan] --> configure.in

configure.in --.   .------> autoconf* -----> configure
               +---+
[aclocal.m4] --+   `---.
[acsite.m4] ---'       |
                       +--> [autoheader*] -> [config.h.in]
[acconfig.h] ----.     |
                 +-----'
[config.h.top] --+
[config.h.bot] --'

Makefile.am -------------------------------> Makefile.in

>Files used in configuring a software package:

                       .-------------> config.cache
configure* ------------+-------------> config.log
                       |
[config.h.in] -.       v            .-> [config.h] -.
               +--> config.status* -+               +--> make*
Makefile.in ---'                    `-> Makefile ---'


* Automake basics

configure.in + Makefile*.am => Makefile.in

* Libtool basics

next time


* hw4/project

read automake manual
work in pairs or alone
	CVS commits to identify who did what
	demos w/ TA
what autotools do (each part)
	leave libtool for later

* Shared libraries

why shared
	fixing quickly
	saves space
slower to load
	mapped into process address space
	TEXT section expanded
pros/cons of static vs. shared libs
sharing address space
library versions:
	major: incomatible w/ previous
	minor: backwards compatible only
	revision: back/fwd compatible