[asterisk-users] Best way to handle include files?

[Doug]

Hi folks,

I am building a new box.  Want it to look
pretty much like an older Asterisk 1.2,
Debian box that is in production.  The new
box will used as a test box before we
implement changes to the production box.

New box:
================================================
# cat /etc/issue;  uname -a
Debian GNU/Linux 4.0 \n \l

Linux ServerName 2.6.18-6-686 #1 SMP Mon Oct 13 
16:13:09 UTC 2008 i686 GNU/Linux
================================================

I've got Asterisk compiled and running:

================================================
# asterisk -rvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
   == Parsing '/etc/asterisk/asterisk.conf': Found
   == Parsing '/etc/asterisk/extconfig.conf': Found
Asterisk 1.2.30.2, Copyright (C) 1999 - 2007 Digium, Inc. and others.
Created by Mark Spencer <markster at digium.com>
Asterisk comes with ABSOLUTELY NO WARRANTY; type 'show warranty' for details.
================================================

The problem lies when I try to compile rxfax and
txfax.  The compiler jumps out of the

   /usr/src/asterisk/asterisk/asterisk-1.2.30.2/apps/

directory:

/bin/sh: curl-config: command not found
cc -fPIC   -c -o app_dial.o app_dial.c
app_dial.c:37:22: error: asterisk.h: No such file or directory
app_dial.c:39: error: expected declaration 
specifiers or â...â before string constant

"asterisk.h" is located:

# find / -name "asterisk.h"
/usr/src/asterisk/asterisk/asterisk-1.2.30.2/include/asterisk.h

I am finding that other Asterisk-related
include files are located:

/usr/include/asterisk/

but, they have a recent time stamp.  I prefer
a time stamp that indicated the last "real"
modification date.

Researching on the Web, some people suggest
copying all the include files to:

/usr/include/asterisk/

Others suggest making a symbolic link that
translates:

/usr/include/asterisk/

to:

/usr/src/asterisk/asterisk/asterisk-1.2.30.2/include/

Does anyone have some suggestions on the best
way to handle include files so that rxfax and txfax,
Asterisk and its related components can be compiled?
Also, what if the box was upgraded in the future to
1.2.32?  What would be the best overall solution?

Thanks for your help!