[Nix-dev] gcc has stopped working on Mac OS X Mavericks

[Michael Sperber]

Alfredo Di Napoli <alfredo.dinapoli at gmail.com> writes:

> Hello nixers,
>
> I think I'm having a very similar problem here which I do not have enough
> nix knowledge to debug. I have reinstalled nix-1.7 doing this (as suggested
> from the nix website):
>
>  curl https://nixos.org/nix/install | sh
>
>
> So far so good. But when I try to install ANYTHING, (e.g. "hello"), this is
> what I get:
>
> installing `hello-2.9'
> these derivations will be built:
>   /nix/store/al6xyibqncn9aicmkffr0n90xgxnfrm4-hello-2.9.drv
> building path(s) `/nix/store/71gijbvnnish0gvrci13qpsqxhqwnqvq-hello-2.9'
> building /nix/store/71gijbvnnish0gvrci13qpsqxhqwnqvq-hello-2.9
> unpacking sources
> unpacking source archive
> /nix/store/xdilnlzvvsf7r33gs4vy9jq2bmazlc0j-hello-2.9.tar.gz
> source root is hello-2.9
> patching sources
> configuring
> configure flags: --disable-dependency-tracking
> --prefix=/nix/store/71gijbvnnish0gvrci13qpsqxhqwnqvq-hello-2.9
> checking for a BSD-compatible install...
> /nix/store/rc94la2h0pwkshbgmd7kz5nhklkdqyr2-coreutils-8.21/bin/install -c
> checking whether build environment is sane... yes
> checking for a thread-safe mkdir -p...
> /nix/store/rc94la2h0pwkshbgmd7kz5nhklkdqyr2-coreutils-8.21/bin/mkdir -p
> checking for gawk... gawk
> checking whether make sets $(MAKE)... yes
> checking whether make supports nested variables... yes
> checking for gcc... gcc
> checking whether the C compiler works... no
> configure: error: in
> `/private/var/folders/js/cv_q5mqd6_g76353vq_n4nqc0000gn/T/nix-build-hello-2.9.drv-0/hello-2.9':
> configure: error: C compiler cannot create executables
> See `config.log' for more details
> builder for `/nix/store/al6xyibqncn9aicmkffr0n90xgxnfrm4-hello-2.9.drv'
> failed with exit code 77
> error: build of `/nix/store/al6xyibqncn9aicmkffr0n90xgxnfrm4-hello-2.9.drv'
> failed
>
> -- Which makes me suspect the error is very similar. Likewise, my xcrun
> thinks I'm on 10.10.

Yep, that's it.  Do what John Wiegley says, change the SDKROOT line in
pkgs/stdenv/nix/default.nix to have this

export SDKROOT=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk

... instead of the call to xcrun, then try again.

-- 
Regards,
Mike