Eric4

Qt 4

get Qt 4 binary here: ftp://ftp.trolltech.com/qt/source/qt-mac-opensource-4.3.1.dmg and install by double-clicking.

QScintilla 2

get QScintilla 2 here: http://www.riverbankcomputing.com/Downloads/QScintilla2/QScintilla-1.73-gpl-2.1.tar.gz

 tar xvzf QScintilla-1.73-gpl-2.1.tar.gz
 cd QScintilla-1.73-gpl-2.1/Qt4
 qmake qscintilla.pro 
 sudo make
 sudo make install

don't delete the source directory yet. you will need it to install th python bindings for QScintilla (see below).

sip

get sip here: http://www.riverbankcomputing.com/Downloads/sip4/sip-4.7.1.tar.gz

 tar xvzf sip-4.7.1.tar.gz
 cd sip-4.7.1
 python configure.py -n
 make
 sudo make install

PyQt 4

get PyQt 4 here: http://www.riverbankcomputing.com/Downloads/PyQt4/GPL/PyQt-mac-gpl-4.3.1.tar.gz

 tar xvzf PyQt-mac-gpl-4.3.1.tar.gz
 cd PyQt-mac-gpl-4.3.1.tar.gz
 python configure.py -a
 make
 sudo make install

QScintilla 2 python bindings

you hav to cd into the Python subdirectory of the QScintilla 2 source directory (see above):

 cd QScintilla-1.73-gpl-2.1/Python

now you can build the python bindings:

Eric 4

get eric 4 here: http://downloads.sourceforge.net/eric-ide/eric4-4.0.1.tar.gz

 tar xvzf eric4-4.0.1.tar.gz
 cd eric4-4.0.1
 sudo su
 export DYLD_FALLBACK_LIBRARY_PATH=/usr/local/Qt-mac-free-3.3.8/lib
 python install.py

start eric:

 eric4