The steps to build and run CMAQ-APT is given below. This version
of CMAQ-APT is based on version 4.4 of CMAQ released in October 2004.

Details of system used for the testcases
----------------------------------------
Processor: AMD Athlon(tm) MP 2000+
Compiler: Portland Group 5.2-2
Operating System: Fedora Core 2

You need to first download the following files:

a) cmaq-repository.tar.gz  -> contains the CVS archive with CMAQ-MADRID modules.
b) CMAQ-APT-2004-simsrc.tar.gz -> contains the build and run scripts for 
CMAQ-APT 
c) CMAQ-APT-2004-eg4.tar.gz -> contains inputs and outputs for example4

Then proceed with the following steps.

Steps to build and run CMAQ-APT (example4)
-------------------------------------------

1) In src directory: 
a) User needs to change pathnames in bldit.apt at specified locations
b) ./bldit.apt >& bldit.apt.log
This builds the SCICHEM libraries (odepack, sci) and
the executable for postprocessing (merge_concs)
It is also retrieves the CMAQ source code from the CVS archive.

2) In src/BLD_cb4_yb_apt directory:
make >& make.log
This build the CCTM executable

3) In sim directory:
run.apt >& run.apt.log
This runs the testcase

4) In postproc directory:
run.merge_concs >& run.merge_concs.log
This merges the puff file with CMAQ concentrations file
and creates the final merged concentration file

Additional information can be found in the latest version of the 
CMAQ-APT (combined with the CMAQ-MADRID) User's Guide, dated January 2005 
(see the download page).