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From: "RasikaSrinivasan@gmail.com" <RasikaSrinivasan@gmail.com>
Newsgroups: comp.lang.ada
Subject: GPS on windows - gnat - GPL 2011
Date: Wed, 27 Jun 2012 02:43:33 -0700 (PDT)
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Date: 2012-06-27T02:43:33-07:00
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friends

I have gnat installed at c:\GNAT\2011

I have several gpr files in the dir c:\GNAT\2011\lib\gnat - as shown here:
04/28/2011  10:14 AM               220 asis.gpr
04/19/2011  06:04 AM               584 aunit.gpr
05/17/2012  10:37 AM             1,453 aunit_shared.gpr
05/26/2012  07:17 AM    <DIR>          gnat_util
04/28/2011  01:43 PM             1,084 gnat_util.gpr
05/23/2012  12:12 PM    <DIR>          gtkada
05/02/2011  09:33 AM             2,534 gtkada.gpr
05/02/2011  09:33 AM               914 gtkada_gl.gpr
06/23/2012  04:44 PM             2,595 qt_core.gpr
06/23/2012  04:45 PM             2,626 qt_designer.gpr
06/23/2012  04:45 PM             2,607 qt_gui.gpr
06/23/2012  04:45 PM             2,621 qt_open_gl.gpr
06/23/2012  04:45 PM             2,607 qt_sql.gpr
06/23/2012  04:45 PM             2,625 qt_ui_tools.gpr
06/23/2012  04:45 PM             2,621 qt_web_kit.gpr
06/23/2012  04:45 PM             2,607 qt_xml.gpr

Most gprs I can just with in my project files without issues.

however from within GPS, my projects which include say qt_core or qt_gui, the gpr files do not get loaded. Following is a typical error message from GPS:

diction.gpr:2:06: unknown project file: "qt_gui"

Is there something special that needs to be done after locating gpr files to the above directory?

alternatively, is there a way to ask GPS to add other directories to the GPR_PROJECT_PATH without having to set an environment variable? 

thanks for all pointers, srini