Installing on Mac OS X

[sg-s]

Hi, I'm running into some trouble installing on mac os x

i copied portia to my computer using

git clone https://github.com/scrapinghub/portia/

and then went to the slyd directory

and started a virtual env using

virtualenv slyd

which told me:

New python executable in slyd/bin/python
Installing setuptools, pip...done.

i then tried to install using:
pip install -r requirements.txt

it did something for a while, but then I got a clang error:

cc -fno-strict-aliasing -fno-common -dynamic -arch x86_64 -arch i386 -g -Os -pipe -fno-common -fno-strict-aliasing -fwrapv -mno-fused-madd -DENABLE_DTRACE -DMACOSX -DNDEBUG -Wall -Wstrict-prototypes -Wshorten-64-to-32 -DNDEBUG -g -fwrapv -Os -Wall -Wstrict-prototypes -DENABLE_DTRACE -arch x86_64 -arch i386 -pipe -I/usr/include/libxml2 -I/private/var/folders/l0/4wm5tl_57j5fv3c_d__gksk40000gn/T/pip_build/lxml/src/lxml/includes -I/System/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7 -c src/lxml/lxml.etree.c -o build/temp.macosx-10.9-intel-2.7/src/lxml/lxml.etree.o -w -flat_namespace

clang: error: unknown argument: '-mno-fused-madd' [-Wunused-command-line-argument-hard-error-in-future]

clang: note: this will be a hard error (cannot be downgraded to a warning) in the future

error: command 'cc' failed with exit status 1

---

Cleaning up...
Command /usr/bin/python -c "import setuptools, tokenize;file='/private/var/folders/l0/4wm5tl_57j5fv3c_d__gksk40000gn/T//lxml/setup.py';exec(compile(getattr(tokenize, 'open', open)(file).read().replace('\r\n', '\n'), file, 'exec'))" install --record /var/folders/l0/4wm5tl_57j5fv3c_d__gksk40000gn/T/pip-Yn4LXx-record/install-record.txt --single-version-externally-managed --compile failed with error code 1 in /private/var/folders/l0/4wm5tl_57j5fv3c_d__gksk40000gn/T//lxml
Storing debug log for failure in /Users/Library/Logs/pip.log

help? i have no idea how to fix this, or what's broken.

[sg-s]

the log file is super long, and the message i've pasted above is from the end of that. i can upload the log if needed.

[duendex]

What version of MacOS X do you have? Do you have Xcode command line tools installed?

[sg-s]

i'm running 10.9.2 (the latest).

i was about to reply that i do have command line tools installed but then i checked and i don't. i've just installed it now, and will try again.

[sg-s]

nope, installed command line tools again, and checked using pkgutil --pkg-info=com.apple.pkg.CLTools_Executables

then tried installed portia again, but i get the same error.

[duendex]

The issue is that in Xcode 5.1 the compiler treats unknown command line options as errors (I guess you have Xcode 5.1 installed?). Take a look at this article: http://kaspermunck.github.io/2014/03/fixing-clang-error/

Let me know if you are able to solve the issue.

[sg-s]

thanks! that was really helpful. i found the instructions in the link you said too complex, and instead installed an older version of the command line tools (5.0.1.0.1.1382131676, this is "late october" in apple-speak)

(note to future readers: DON'T use xcode-select --install, as this will install v5.1, which is the problem)

installation seems successful now...i get the same messages, but, as you pointed out, they are now warnings and not errors.

EDIT: you need to sudo the pip install and twistd, otherwise you'll get a permission denied error.