> I think this system library is located at /usr/share/linuxcnc/hallib

This is accurate for current deb installs but is different for
Run-In-Place (RIP) users.

The scripts/linuxcnc.in file (creates the linuxcnc
script at make time) expands:
  HALLIB_DIR=@HALLIB_DIR@; export HALLIB_DIR

The value in use can be found with the linuxcnc_var
script.
----------------------------------------------------------------
deb install Example:
$ which linuxcnc_var
/usr/bin/linuxcnc_var

$ linuxcnc_var
Retrieve Linuxcnc Variables
Usage:
      linuxcnc_var [ varname | all ]
Varnames supported:
         LINUXCNCVERSION
         REALTIME
         RTS
         HALLIB_DIR
Option 'all' returns varname=value for all supported varnames

$ linuxcnc_var HALLIB_DIR
/usr/share/linuxcnc/hallib
----------------------------------------------------------------
RIP Example:
$ cd /home/git/linuxcnc-dev # my RIP root dir
$ source scripts/rip-environment
$ which linuxcnc_var
/home/git/linuxcnc-dev/scripts/linuxcnc_var
$ linuxcnc_var HALLIB_DIR
/home/git/linuxcnc-dev/lib/hallib

-- 
Dewey Garrett


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