Re: when building latest GHC on Mac with Xcode 8: Symbol not found: _clock_gettime

Thanks very much Brandon for your fast reply! That did the trick. I had to rerun configure as well since when I didn't do that I got a different but seemingly related error. But after clean, configure and make everything seems to work again. John On Mon, Oct 10, 2016 at 8:27 PM, Brandon Allbery wrote:

On Mon, Oct 10, 2016 at 11:22 PM, John Leo wrote:

...

I'm trying to compile ghc from the latest source and am hitting an error "Symbol not found: _clock_gettime". I'm on Mac El Capitan and recently installed Xcode 8 which I'm sure is what caused the problem. Using Google I found some relevant pages including this one https://mail.haskell.org/pipermail/ghc-devs/2016-July/012511.html

but I've been unable to figure out what I can do to fix the problem. Any help would be appreciated.

You need to download the 10.11 Command Line Tools from download.apple.com and reinstall them over the Xcode 8 command line tools, which are for 10.12 and will have problems like this. (Apple intends to correct this in Xcode 8.1.) You need a free Mac Developer account for this, or maybe you can find the 10.11 tools elsewhere. You will then need to clean and rebuild ghc.

-- brandon s allbery kf8nh sine nomine associates allbery.b@gmail.com ballbery@sinenomine.net unix, openafs, kerberos, infrastructure, xmonad http://sinenomine.net