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pip fails to install packages on moutain loin (Mac OS 10.8.2)

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  pip fails to install packages on moutain loin (Mac OS 10.8.2) Peng Yu <pengyu.ut@gmail.com> - 2012-10-18 15:03 -0700
    RE: pip fails to install packages on moutain loin (Mac OS 10.8.2) "Prasad, Ramit" <ramit.prasad@jpmorgan.com> - 2012-10-18 22:16 +0000
    Re: pip fails to install packages on moutain loin (Mac OS 10.8.2) Ned Deily <nad@acm.org> - 2012-10-18 15:43 -0700
    Re: pip fails to install packages on moutain loin (Mac OS 10.8.2) Ned Deily <nad@acm.org> - 2012-10-18 15:46 -0700

#31687 — pip fails to install packages on moutain loin (Mac OS 10.8.2)

Hi,

I installed Python using python-2.7.3-macosx10.6.dmg on my Mac OS
10.8.2.

When try to use pip to install packages, I get the following message.
Then the installation fails.

gcc-4.2 not found, using clang instead


I then create a link from /usr/bin/gcc to gcc-4.2. Then I run pip
again, I get the following error message.

Does anybody have a solution to install python on Mac OS 10.8.2 so
that packages can be installed with pip?

    /Developer/SDKs/MacOSX10.6.sdk/usr/include/c++/4.2.1/exception:
42:28: error: bits/c++config.h: No such file or directory
    In file included from /Developer/SDKs/MacOSX10.6.sdk/usr/include/c+
+/4.2.1/bits/stl_algobase.h:70,
                     from /Developer/SDKs/MacOSX10.6.sdk/usr/include/c+
+/4.2.1/bits/char_traits.h:46,
                     from /Developer/SDKs/MacOSX10.6.sdk/usr/include/c+
+/4.2.1/string:47,
                     from /Developer/SDKs/MacOSX10.6.sdk/usr/include/c+
+/4.2.1/stdexcept:44,

Regards,
Peng

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#31688

Peng Yu wrote
> Hi,
> 
> I installed Python using python-2.7.3-macosx10.6.dmg on my Mac OS
> 10.8.2.
> 
> When try to use pip to install packages, I get the following message.
> Then the installation fails.
> 
> gcc-4.2 not found, using clang instead
> 
> 
> I then create a link from /usr/bin/gcc to gcc-4.2. Then I run pip
> again, I get the following error message.
> 
> Does anybody have a solution to install python on Mac OS 10.8.2 so
> that packages can be installed with pip?
> 
>     /Developer/SDKs/MacOSX10.6.sdk/usr/include/c++/4.2.1/exception:
> 42:28: error: bits/c++config.h: No such file or directory
>     In file included from /Developer/SDKs/MacOSX10.6.sdk/usr/include/c+
> +/4.2.1/bits/stl_algobase.h:70,
>                      from /Developer/SDKs/MacOSX10.6.sdk/usr/include/c+
> +/4.2.1/bits/char_traits.h:46,
>                      from /Developer/SDKs/MacOSX10.6.sdk/usr/include/c+
> +/4.2.1/string:47,
>                      from /Developer/SDKs/MacOSX10.6.sdk/usr/include/c+
> +/4.2.1/stdexcept:44,
> 
> Regards,
> Peng

I would install python+virtualenv+pip from MacPorts to keep
it separate from the OS X system Python. MacPorts will take 
care of everything for you as long as you have Xcode installed.	

`sudo ports install py27-pip`


Ramit Prasad


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#31691

In article 
<53b38fa2-ea8b-4225-bdf3-b9bcbde31743@o5g2000yqi.googlegroups.com>,
 Peng Yu <pengyu.ut@gmail.com> wrote:

> Hi,
> 
> I installed Python using python-2.7.3-macosx10.6.dmg on my Mac OS
> 10.8.2.
> 
> When try to use pip to install packages, I get the following message.
> Then the installation fails.
> 
> gcc-4.2 not found, using clang instead
> 
> 
> I then create a link from /usr/bin/gcc to gcc-4.2. Then I run pip
> again, I get the following error message.
> 
> Does anybody have a solution to install python on Mac OS 10.8.2 so
> that packages can be installed with pip?
> 
>     /Developer/SDKs/MacOSX10.6.sdk/usr/include/c++/4.2.1/exception:
> 42:28: error: bits/c++config.h: No such file or directory
>     In file included from /Developer/SDKs/MacOSX10.6.sdk/usr/include/c+
> +/4.2.1/bits/stl_algobase.h:70,
>                      from /Developer/SDKs/MacOSX10.6.sdk/usr/include/c+
> +/4.2.1/bits/char_traits.h:46,
>                      from /Developer/SDKs/MacOSX10.6.sdk/usr/include/c+
> +/4.2.1/string:47,
>                      from /Developer/SDKs/MacOSX10.6.sdk/usr/include/c+
> +/4.2.1/stdexcept:44,

One issue is that you are mixing compilers and SDKs.  Python 2.7.3 was 
released about the time Apple released Xcode 4.3 which fundamentally 
changed where SDKs are located.  Xcode 4 no longer uses /Developer at 
all, so what is there is likely left behind from 10.7 or earlier 
versions of Xcode.  Further, Xcode 4.5 which is the currently supported 
version on 10.8 does not include an SDK for 10.6.   2.7.3 does have 
support for using clang instead of the Xcode 3.2 gcc-4.2 it was built 
with.  This is untested but the simplest workaround if you are using 
Xcode 4.4 or 4.5.* may be to just remove (or at least rename) /Developer

    sudo mv /Developer /Developer-old

and make sure you have installed the Command Line Tools component of 
Xcode 4.* (Xcode -> Preferences).  If there is no directory at the 
original SDK path (/Developer/SDKs/MacoOSX10.6.sdk), I believe distutils 
will try to build without using an SDK, which may work. Also, you may 
need to define env variable CXX if you are building c++:

    export CXX=/usr/bin/g++
or export CXX=/usr/bin/clang++

The plan is for the next maintenance release of Python 2.7 to work 
better with current Xocde 4.x on 10.7 and 10.7, as the newly released 
Python 3.3.0 does.

-- 
 Ned Deily,
 nad@acm.org

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#31692

In article 
<5B80DD153D7D744689F57F4FB69AF4741671D3B6@SCACMX008.exchad.jpmchase.net>
,
 "Prasad, Ramit" <ramit.prasad@jpmorgan.com> wrote:
> I would install python+virtualenv+pip from MacPorts to keep
> it separate from the OS X system Python. MacPorts will take 
> care of everything for you as long as you have Xcode installed.	
> 
> `sudo ports install py27-pip`

Yes, that should be another viable option as all of the components 
should be built with the same version of the Xcode tool chain.  Also, 
some or all of the third-party packages may already be available as 
MacPorts ports.

-- 
 Ned Deily,
 nad@acm.org

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