Re: Missing library in Mac OS X instructions?

heres what you need to do cp mk/build.mk.sample mk/build.mk then uncomment the line about GMP On Wed, Aug 21, 2019 at 11:19 AM Alejandro Serrano Mena wrote:

Thanks for the reply! In my case, it was a clean installation of Mac OS X, with only Xcode command line tools and after executing the corresponding 'brew' command from the wiki.

El lun., 19 ago. 2019 11:09, Shayne Fletcher escribió:

...

Hi Alejandro,

On Mon, Aug 19, 2019 at 2:11 AM Alejandro Serrano Mena wrote:

...

Hi, I tried to get GHC working from the repo in Mac OS X following the instructions in https://gitlab.haskell.org/ghc/ghc/wikis/building/preparation/mac-osx. At first I got the "error __GNU_MP_VERSION not defined" problem, for which the guide recommends to prepend "CC=clang" to "./configure" , which I did. But even then, I also had to install "gmp" using "brew install gmp". 1. Is it right that I need to install gmp using brew or did I miss some previous step? 2. If (1) is affirmative, how can I help update the docs for building in Mac OS X?

I've encountered this problem. In my case it turned out that I had a rogue `cc` executable in my path. See https://gitlab.haskell.org/ghc/ghc/issues/16904 for details.

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