How to install RtidyHTML on Mac?

Any ideas how I can install RTidyHTML when I get the following error message?

install.packages("RTidyHTML", repos = "http://www.开发者_运维问答omegahat.org/R", type="source")
trying URL 'http://www.omegahat.org/R/src/contrib/RTidyHTML_0.2-1.tar.gz'
Content type 'application/x-gzip' length 554953 bytes (541 Kb)
opened URL
==================================================
downloaded 541 Kb

* installing *source* package ‘RTidyHTML’ ...
./configure: line 3: make: command not found
ERROR: configuration failed for package ‘RTidyHTML’
* removing ‘/Library/Frameworks/R.framework/Versions/2.13/Resources/library/RTidyHTML’

You need to install XCode on your Mac if you want to compile from source. (Roman's comment only applies to Windows machines.) I just tried installing it on an XCode-equipped Mac running R 2.13.0 and get first a warning during compliation

ld warning: in libtidy/libtidy.a, file is not of required architecture
installing to /Library/Frameworks/R.framework/Versions/2.13/Resources/library/RTidyHTML/libs/x86_64

... and then get an error during the test load that is part of the install script:

Error in dyn.load(file, DLLpath = DLLpath, ...) : 
  unable to load shared object '/Library/Frameworks/R.framework/Versions/2.13/Resources/library/RTidyHTML/libs/x86_64/RTidyHTML.so': 
dlopen(/Library/Frameworks/R.framework/Versions/2.13/Resources/library/RTidyHTML/libs/x86_64/RTidyHTML.so, 6): Symbol not found: _tidyBufFree
  Referenced from: /Library/Frameworks/R.framework/Versions/2.13/Resources/library/RTidyHTML/libs/x86_64/RTidyHTML.so
  Expected in: dynamic lookup

I suppose it is possible that it may compile under a 32 bit version of R on the Mac.64-bit. See Simon Urbanek's web page: for more specifics and some installers for other packages.

EDIT: Installation while running 32bit R from the GUI was successful with a current R (version 2.13.1 RC (2011-07-03 r56263) )