I wrote: > http://4toc.com/fb4/FBtoC_Preview1a126.zip [1.6 MB download] > What's new in FBtoC itself: > - repeated builds of small projects are faster with 'Use precompiled > header' 'Use precompiled header' is the name of a checkbox in FBtoC's Settings dialog. Management of gcc's precompiled header optimization is something of a black art. For the last several preview releases, FBtoC has been making an invalid pch, which gcc later silently ignored. The performance bug was fixed in 1a126. 'Use precompiled header' gives a noticeable speed-up of repeated builds of the same FB project, or standalone source file, when tested with gcc 4.0.1 in OS X 10.4 and 10.5. If someone running OS X 10.3.9 (and hence gcc version 3.3) could report on the truth of the claim above, the FBtoC team would be grateful. Robert P.