I'm using 10.4.8 (PPC). and the latest developer tools.I tried to build revision 17770 but it failed and gave me the following output:
[ERROR] Can't open directory /Users/daniellaughlin/WebKit/WebCore//Users/daniellaughlin/WebKit/WebCore/page/mac: "No such file or directory"
make: *** [DOMSVGAElement.h] Error 2
make: *** Waiting for unfinished jobs....
** BUILD FAILED **
What command are you using to build WebKit?
Thanks, fixed in r17775.