> On Dec 12, 2016, at 9:30 AM, Alexis via swift-dev <swift-dev@swift.org> wrote:
> 
> I find that build-script tends to get corrupted state very easily, forcing me 
> to do a —clean build. This is usually because of git, but seemingly from 
> benign things like checking out HEAD~1. Since I’m working on the stdlib, the 
> corruption often shows up in there, so —clean is needlessly heavy-handed. I 
> don’t need to rebuild clang or llvm, and I probably don’t need to rebuild 
> swiftc. Is there any way to do this?

The build directory has separate subdirectories for the build products of llvm 
and clang and swift. Deleting the swift directory will safely preserve llvm and 
clang, but not swiftc.


-- 
Greg Parker     gpar...@apple.com     Runtime Wrangler


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