Sbt: java.io.IOException: Cannot run program "javac": CreateProcess error=2, The system cannot find the file specified if the path to javac contains space

I think this is a bug at a lower level, perhaps java.lang.ProcessBuilder. sbt doesn't parse the PATH variable. It runs the javac program without a prefix via ProcessBuilder. I don't remember the exact reason for the special casing of forking git in c5e31645a362bb552c826fc81d3b1a32f70b2b39, but perhaps @jsuereth can comment on whether this is the same problem.

If you specify javaHome explicitly (such as in your ~/.sbt/global.sbt configuration file), it will construct the path to the binary directly. I expect that would be a suitable workaround.

The git stuff uses cmd /c because git has a .cmd file in the path you use. THIS is that we can't find javac on the path.

Can you add two things for helping debug?

(1) Is it a 64-bit JDK
(2) Are you using one of our MSI installs, or your own start script?

Thanks, Josh.

Hi, everybody.
I've found the cause. I'm using tcc/le and it was applying some special logic to fix such a broken PATH, so i was able to use javac from command line. This of course did not affect ProcessBuilder API.
Thanks for your attetntion!

A quick fix for me was to add javac to my PATH.