A script to install qcachegrind (the QT version of KCacheGrind) from the source tree at the KDE project. It will also install QT from homebrew with the required dependencies (which takes about 2 hours).

file-dialog-filters.diff

Index: qcachegrind/qcgtoplevel.cpp
===================================================================
--- qcachegrind/qcgtoplevel.cpp	(revision 1155013)
+++ qcachegrind/qcgtoplevel.cpp	(working copy)
@@ -792,7 +792,7 @@
     file = QFileDialog::getOpenFileName(this,
 					tr("Open Callgrind Data"),
 					_lastFile,
-					tr("Callgrind Files (callgrind.*)"));
+					tr("Cachegrind Files (*cachegrind.*);;Callgrind Files (*callgrind.*);;All Files (*)"));
     loadTrace(file);
 }
 
@@ -839,7 +839,7 @@
     file = QFileDialog::getOpenFileName(this,
 					tr("Add Callgrind Data"),
 					_lastFile,
-					tr("Callgrind Files (callgrind.*)"));
+					tr("Cachegrind Files (*cachegrind.*);;Callgrind Files (*callgrind.*);;All Files (*)"));
     addTrace(file);
 }

install-qcachegrind-with-brew.sh

#!/bin/bash
# This is a script that will install qt via homebrew
# and will compile QCacheGrind (the QT version of KCacheGrind)
# and place it into your /Applications folder
# 
# Currently the "Callee Map" function will beachball the app
# so don't use it!

# TODO: If QT is already installed, check for dbus and qt3support

echo "======================================="
echo "Installing QT with DBUS and Qt3Support"
echo "This will take about 2 hours"
echo "======================================="
brew install qt --with-qtdbus --with-qt3support

echo
echo
echo "======================================="
echo "QT installation complete."
echo "Compiling qcachegrind..."
echo "======================================="
echo 

cd $TMPDIR
svn export -r 1155128 svn://anonsvn.kde.org/home/kde/trunk/KDE/kdesdk/kcachegrind
cd kcachegrind
curl http://gist.github.com/raw/491405/file-dialog-filters.diff | patch -p0
qmake
make

echo
echo
echo "============================================"
echo "Password needed to install into /Applications:"
echo "============================================"
sudo cp -r qcachegrind/qcachegrind.app /Applications/QCacheGrind.app

echo
echo
echo "=========================================="
echo "QCacheGrind.app installed in /Applications"
echo "=========================================="

To anyone that stumbles across this, it doesn't work any more - you end up with a completely broken QCachegrind that can't open files.

@oskarois thanks for the note. This is pretty old.