Ensure your compiler is able to build 32-bit applications. XCode by default is able to do so.
Operating systems older than OSX 10.9 (Mavericks) are not officially supported.
.tar.gz version of Dr. Memory. Untar the package into a directory of your choice:
tar xzf DrMemory-MacOS-X.X.X-X.tar.gz
Now either place the
bin subdirectory of the Dr. Memory directory structure on your PATH, or invoke Dr. Memory via its full path.