Experimental Physics and
Industrial Control System

Andrew Johnson <[email protected]> · Wed, 19 Dec 2012 17:38:35 -0600

Hi,

On 2012-12-19 Mark Rivers wrote:
> 
> What I can't answer, but hopefully Janet Anderson can, is how you tell
> EPICS to look for a library in a location other than the standard Linux
> search path for include files and libraries.

You tell the build system where to find libXxx.a or libXxx.so by setting the 
variable Xxx_DIR to the directory containing the library.  In Pavel's case his 
Makefile has the line
    hello_LIBS += my_library
so he needs
    my_library_DIR = /where/my/library/lives

For include file directories, the simplest way is to set USR_INCLUDES like 
this:
    USR_INCLUDES += -I /where/my/headers/live
You can also set OS-specific paths if you need to, for example
    USR_INCLUDES_Linux += -I /my/linux/headers

In general I recommend making use of the EPICS build system if you can because 
we take care of things like creating dependency files and handling multiple 
architecture builds from the same source tree; most other build systems need 
you to do extra work for that kind of thing.

HTH,

- Andrew
-- 
Computer science is as much about computers as astronomy is about
telescopes. -- Edsger Dijkstra

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System