Connectal Support for open source bsc compiler

[rajat-agarwal-]

I tried using connectal with open-source version of Bluespec and it fails. There seems to be some outdated switches in connectal and include locations in regards to open sourced version. Attached are the error logs.

Kindly help. log_V.txt log.txt

[jameyhicks]

I have not been able to build it so I have not tested it yet. I will pull from the repo and try again.

Thank you for sharing the log files, these are helpful.

[hanw]

I tried to build echo for bluesim. The opensource version seems to miss some Xilinx libraries in Prelude. For instance, the XilinxCells.bo file cannot be found.

[hanw]

This is resolved with the release of contrib library

[rajat-agarwal-]

I am still getting the following error if i try to build echo for bluesim. make[1]: *** No rule to make target 'obj/Vector.bo', needed by 'obj/XsimTop.bo'. Stop.

I think i am missing some variable or my paths are not pointing to correct location. Can you please help??

[hanw]

You can use V=1 make build.bluesim to print the commands used by connectal to compile your module. Current problem is the licensed bsc release and open-source bsc release install the library file to different paths. In the licensed bsc, all library files are installed under Prelude, in open-source bsc, the library files are under Libraries and the contrib library files are under their own directory. We need to update connectal to source from all these places.

[hanw]

Search for Prelude in connectal repo, these two python files need fix. scripts/packagesource.py, scripts/bsvdependencies.py Can you perhaps make a PR?

[jameyhicks]

bsc-contrib has XilinxCells but the hierarchy has changed, so one more fix needed.

[jameyhicks]

I was able to build and run examples/simple for verilator using open source bsc and bsc-contrib. I compiled the BSV to Verilog for VC707 (build.vc707g2) and I'm compiling the verilog to a bitstream now.

This depends on bsc and bsc-contrib being installed into the same prefix: cd bsc; make PREFIX=~/Bluespec install cd bsc-contrib; make PREFIX=~/Bluespec install export BLUESPECDIR=~/Bluespec/lib cd connectal/examples/simple; make build.verilator run.verilator

We can make another change so that if bsc is on the path but BLUESPECDIR is not that the scripts would detect where the libraries are by running which bsc.

[acw1251]

Just using which bsc will not work if bsc is a sym link. Instead you can use the technique mentioned in https://github.com/B-Lang-org/bsc/pull/33 to get the library folder for open-sourced bsc. Running the command echo 'puts $env(BLUESPECDIR)' | bluetcl in the shell will get you the internal value of BLUESPECDIR used in bluetcl. This command works with licensed bsc as well.

One more thing, since bsc-contrib is separate from bsc now, would it make sense to add bsc-contrib as a submodule to connectal?

[jameyhicks]

I was planning to dereference any symlinks. But why use a symlink rather than adjusting PATH?

I'm working on making bsc and bsc-contrib .debs.