After installing xcode I executed pip install Pillow and the last code strings say:
In file included from _imagingtk.c:19:
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk/usr/include/tk.h:78:11: fatal error: 'X11/Xlib.h' file not found
In file included from Tk/tkImaging.c:52:
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk/usr/include/tk.h:78:11: fatal error: 'X11/Xlib.h' file not found
# include <X11/Xlib.h>
^
1 error generated.
1 error generated.
Building using 4 processes
cc -bundle -undefined dynamic_lookup -arch x86_64 -arch i386 -Wl,-F. build/temp.macosx-10.9-intel-2.7/_imagingtk.o build/temp.macosx-10.9-intel-2.7/Tk/tkImaging.o -L/System/Library/Frameworks/Python.framework/Versions/2.7/lib -L/usr/X11/lib -L/usr/lib -o build/lib.macosx-10.9-intel-2.7/PIL/_imagingtk.so -framework Tcl -framework Tk
clang: error: no such file or directory: 'build/temp.macosx-10.9-intel-2.7/_imagingtk.o'
clang: error: no such file or directory: 'build/temp.macosx-10.9-intel-2.7/Tk/tkImaging.o'
error: command 'cc' failed with exit status 1
----------------------------------------
Command /usr/bin/python -c "import setuptools;__file__='/tmp/pip-build/Pillow/setup.py';exec(compile(open(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /tmp/pip-YMhwsU-record/install-record.txt --single-version-externally-managed failed with error code 1 in /tmp/pip-build/Pillow
Storing complete log in /var/root/Library/Logs/pip.log
Did you uninstall PIL first?
Try:
pip uninstall pil
pip uninstall pillow
brew install libtiff libjpeg webp little-cms2
pip install pillow
See https://pillow.readthedocs.io/en/stable/installation.html for more information.