# Variable @FSM\_FILE\_INSTALL\_DIR@ does not evaluate in grc **URL:** \ **Category:** GNU Radio\ **Created:** [October 2, 2014, 1:31am UTC](https://www.ruby-forum.com/t/variable-fsm-file-install-dir-does-not-evaluate-in-grc/232312 "2014-10-02T01:31:33Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![addis\_a](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/a/c4cdca/32.png) [@addis\_a](https://www.ruby-forum.com/u/addis_a)\ **Post date:** [October 2, 2014, 1:31am UTC](https://www.ruby-forum.com/t/variable-fsm-file-install-dir-does-not-evaluate-in-grc/232312/1 "2014-10-02T01:31:33Z")
From the latest master, when I run one of the examples in gr-trellis/examples/grc, the value of the parameter “prefix” which is set to @FSM\_FILE\_INSTALL\_DIR@ does not evaluate… Can someone confirm? Is there something I should do to set it? thanks Achilleas ---
**Author:** ![Achilleas\_A](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/a/74df32/32.png) [@Achilleas\_A](https://www.ruby-forum.com/u/Achilleas_A)\ **Post date:** [October 2, 2014, 2:57am UTC](https://www.ruby-forum.com/t/variable-fsm-file-install-dir-does-not-evaluate-in-grc/232312/2 "2014-10-02T02:57:30Z")
On Wed, Oct 1, 2014 at 7:30 PM, Achilleas A. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > It’s actually designed that way. It was originally hard-coded to your home directory 🙂 There’s no way (right now in GRC) to make this dynamic or not an absolute path. So whatever we do, we had to change that path to where the actual FSM files are located. On the other hand, if you use the installed examples (/usr/local/share/gnuradio/example/trellis), these values are set properly during cmake to the installed path directories. Tom