.lo.ce 2.bUsing the ESPS Source.spDocument version: 1.3 6/6/90.sh 1 "Introduction".ppThis document describes the ESPS source directory and how to make use ofit.   The enclosed source tape contains the complete source for ESPS,except for the utility function library.    In order to compile fromthis distribution, you must already have a binary ESPS installed (topick up the portions of the library supplied in binary form)..ppUsing this distribution, you can modify and recompile any ESPS userlevel program.  You can either install it into your existing ESPSinstallation overwriting the original version, or you can put the binaryin some other location to preserve the original binary..ppIt is also possible to modify the signal processing library andrecompile all user level programs using your modified library..ppThe most common use of source, however, is probably to find a programclose to a new one you need to write and to use it as a starting point..sh 1 "Reading the Tape".ppThe source tape is simply a Unix \fItar\fR tape containing a directorynamed \fIesps.src\fR.   You can read this into your system anywhere.Please remember that the source is protected by a license agreementexecuted by your organization and you should take reasonable steps toensure that it is not available to people not covered by the licenseagreement.   .sh 1 "Source Directories".ppWith a few exceptions, each user level program is in a source directoryof its own, along with a makefile and the manual page.    To compile thisprogram, you simply change into this directory and do \fBemake\fR.   (Ofcourse, \fI/usr/esps/bin\fR must be on your path.)   For example, torecompile \fIfft\fR do:.nf.ft CW% cd esps.src/fft% emake.ft R.fi.ppThis command will recompile the \fIfft\fR program and leave the binaryin the source directory.    To install the new \fIfft\fR binary into\fI/usr/esps/bin\fR do:.nf.ft CW% emake install.ft R.fi.ppIf you want to remake one of our programs, but also save the originalversion, it might be best to copy the needed source directory andthen rename the program..ppThe signal processing library is in a directory named \fIlib_sp\fR.  Tomodify this library, edit the desired C files in \fIlib_sp\fR and simply run\fBemake\fR in this directory.   This will compile the C files andupdate the library archive file, \fI/usr/esps/lib/libespsg.a\fR.   Itmight be a good idea to make a copy of the original\fI/usr/esps/lib/libespsg.a\fR..ppAfter you modify the library, it might be desired to recompile allprograms.   This is easily done, simply by running \fBemake install\fRwhile in \fIesps.src\fR, rather than one of the directories below this.You can also do \fBemake clean\fR to clean the source directories ofobject files..sh 1 "Additional Information".ppFor additional information about compiling ESPS programs, see thedocument \fIEntropic Signal Processing System (ESPS) ProgrammingGuidelines\fR, supplied with your ESPS manuals..sp.TSbox,center,tab(;);l | l.Entropic Research Laboratory, Inc.;Voice: 202 547-1420600 Pa. Ave. SE, Suite 202;FAX: 202 546-6648Washington, DC. 20003 USA;Email: esps@wrl.epi.com (uunet!epiwrl!esps).TE