Absolute path of output in rule

[Andrew Allen]

I'm working on a build rule wrapping a compiler I have very little control over. Unfortunately the compiler expects absolute paths for the files that come in as arguments. Is it possible to get the absolute path of a file or output in a skylark build rule?

I made efforts with combinations of basename, dirname, path, root, short_path but thus far no luck. It looks like the root object has the information I want but only in the relative path form. I also looked into the ctx object that get's passed into the impl but there doesn't seem to be anything in there either.

Is this something that I can get from skylark land via another avenue?  

/** ~Andrew Z Allen */

[Austin Schuh]

Is your compiler a C/C++ compiler?  Are you going to use it with a CROSSTOOL file?

Consider wrapping the compiler with a shell script, and expanding the paths that way.  We modify environment variables that way when we define custom compilers with CROSSTOOL files.

Austin

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