How to Install Pil on MAC Os X 10.7.2 Lion

How can I install PIL on mac os x 10.7.2 Lion

If you use homebrew, you can install the PIL with just brew install pil. You may then need to add the install directory ($(brew --prefix)/lib/python2.7/site-packages) to your PYTHONPATH, or add the location of PIL directory itself in a file called PIL.pth file in any of your site-packages directories, with the contents:

/usr/local/lib/python2.7/site-packages/PIL

(assuming brew --prefix is /usr/local).

Alternatively, you can just download/build/install it from source:

# download
curl -O -L http://effbot.org/media/downloads/Imaging-1.1.7.tar.gz
# extract
tar -xzf Imaging-1.1.7.tar.gz
cd Imaging-1.1.7
# build and install
python setup.py build
sudo python setup.py install
# or install it for just you without requiring admin permissions:
# python setup.py install --user

I ran the above just now (on OSX 10.7.2, with XCode 4.2.1 and System Python 2.7.1) and it built just fine, though there is a possibility that something in my environment is non-default.

Installing PIL on MAC OS X LION 10.7.2 with PIP INSTALLER

Are you sure you have actually run the Xcode installer (usually found in /Applications)? Downloading it from the Mac App Store doesn't automatically run the installer.

Installing PIL on OS X Lion

If you are on Lion, using the newest XCode, then a potential problem for you is that they moved the location of the developer SDKs. Packages that expected them to live in /Developer/ would no longer find them as needed.

Reference this article about specifics:

http://www.agile-workers.com/web/2012/03/qt-qmake-osx_sdk-xcode/

But in summary, what you might need to do is run:

sudo /usr/bin/xcode-select -switch /Applications/Xcode.app/Contents/Developer
to point at the new location.

A manual fix might be to just symlink the SDK from /Applications/Xcode.app/Contents/Developer/... => /Developer/..., but I would first try the xcode-select tool.

Update: Some more suggestions based on your new updates

First off, I can't tell from what you posted whether PIL failed to build because of the SDK or not. If it built successfully, and you are using the standard apple python, then chances are the homebrew python path is not in your own python path.

$ python
>>> import sys
>>> sys.path.append("/usr/local/lib/python2.7/site-packages")
>>> from PIL import Image

If that still errors, then I suppose the issue is still related to missing SDK location.
You could symlink the new location of the SDK to the old one with:

mkdir -p -v /Developer/SDKs
ln -s /Applications/Xcode.app/Contents/Developer/MacOSX10.6.sdk  /Developer/SDKs/MacOSX10.6.sdk

Or, you can try explicitly setting the the sdk path when you build pil:

brew remove pil
export SDKROOT=/Applications/Xcode.app/Contents/Developer/MacOSX10.6.sdk
brew install pil

Installing PIL on OS X Lion

If you are on Lion, using the newest XCode, then a potential problem for you is that they moved the location of the developer SDKs. Packages that expected them to live in /Developer/ would no longer find them as needed.

Reference this article about specifics:

http://www.agile-workers.com/web/2012/03/qt-qmake-osx_sdk-xcode/

But in summary, what you might need to do is run:

sudo /usr/bin/xcode-select -switch /Applications/Xcode.app/Contents/Developer
to point at the new location.

A manual fix might be to just symlink the SDK from /Applications/Xcode.app/Contents/Developer/... => /Developer/..., but I would first try the xcode-select tool.

Update: Some more suggestions based on your new updates

First off, I can't tell from what you posted whether PIL failed to build because of the SDK or not. If it built successfully, and you are using the standard apple python, then chances are the homebrew python path is not in your own python path.

$ python
>>> import sys
>>> sys.path.append("/usr/local/lib/python2.7/site-packages")
>>> from PIL import Image

If that still errors, then I suppose the issue is still related to missing SDK location.
You could symlink the new location of the SDK to the old one with:

mkdir -p -v /Developer/SDKs
ln -s /Applications/Xcode.app/Contents/Developer/MacOSX10.6.sdk  /Developer/SDKs/MacOSX10.6.sdk

Or, you can try explicitly setting the the sdk path when you build pil:

brew remove pil
export SDKROOT=/Applications/Xcode.app/Contents/Developer/MacOSX10.6.sdk
brew install pil

Can't install PIL after Mac OS X 10.9

Following worked for me:

ln -s  /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers/X11 /usr/local/include/X11
sudo pip install pil

UPDATE:

But there is more correct solution below, provided by Will.

open your terminal and execute:
xcode-select --install

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