I am working with PRG files rather than VCX files so I have to rebuild to see the effect of a change on my screens. Ergo, a fast build is quite important to me.

I have a test directory where it take 2.4 seconds to build my project. I have two INCLUDE files.

If I "touch" one of my INCLUDE files the build time goes to 6.4 seconds. By "touch" I mean make a trivial change (type space bar) which changes the datetime stamp on the file.

When I say it goes to 6.4 seconds, I mean it doesn't get any better even if I rebuild a number of times. I get times like these;
6.407, 6.391, 6.360.

I'm talking about a simple build (no RECOMPILE) parameter.

If I restore the original INCLUDE file (which BeyondCompare says is identical to the touched file) I get these times:
6.492, 2.485, 2.490

In this case (fast) the TIMESTAMP in the row of my PJX table for the INCLUDE file goes back to the original value.

Has anyone else seen this?

Peter