node-expat causing npm to fail with node install soap

I am trying to install node js soap module via NPM on Mac OSX, tried hard enough to manually install and point to expat.h etc didn't work

npm install soap

npm http GET https://registry.npmjs.org/soap
npm http 304 https://registry.npmjs.org/soap
npm http GET https://registry.npmjs.org/node-expat
npm http GET https://registry.npmjs.org/request
npm http 304 https://registry.npmjs.org/node-expat
npm http 304 https://registry.npmjs.org/request

> node-expat@1.6.0 install /Users/test/test1/node_modules/soap/node_modules/node-expat
> node-waf configure build

Checking for program g++ or c++          : /usr/bin/g++ 
Checking for program cpp                 : /usr/bin/cpp 
Checking for program ar                  : /usr/bin/ar 
Checking for program ranlib              : /usr/bin/ranlib 
Checking for g++                         : ok  
Checking for node path                   : not found 
Checking for node prefix                 : ok /usr/local 
Checking for header expat.h              : not installed 
/Users/test/test1/node_modules/soap/node_modules/node-expat/wscript:14: error: the configuration failed (see '/Users/test/test1/node_modules/soap/node_modules/node-expat/build/config.log')
npm ERR! node-expat@1.6.0 install: `node-waf configure build`
npm ERR! `sh "-c" "node-waf configure build"` failed with 1
npm ERR! 
npm ERR! Failed at the node-expat@1.6.0 install script.
npm ERR! This is most likely a problem with the node-expat package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR!     node-waf configure build
npm ERR! You can get their info via:
npm ERR!     npm owner ls node-expat
npm ERR! There is likely additional logging output above.

npm ERR! System Darwin 11.3.0
npm ERR! command "node" "/usr/local/bin/npm" "install" "soap"
npm ERR! cwd /Users/test/test1
npm ERR! node -v v0.8.1
npm ERR! npm -v 1.1.33
npm ERR! code ELIFECYCLE
npm ERR! message node-expat@1.6.0 install: `node-waf configure build`
npm ERR! message `sh "-c" "node-waf configure build"` failed with 1
npm ERR! 
npm ERR! Additional logging details can be found in:
npm ERR!     /Users/test/test1/npm-debug.log
npm ERR! not ok code 0

Have googled it installed expat manually etc but no luck. Please note Xcode 4.3 is installed and also command line support is in place.

I am really not sure how I can get rid of the following two messages. Please help.

Checking for node path                   : not found 
Checking for header expat.h              : not installed