Re: build error--missing header

This is a problem with the newest Apple API's & the mozilla codebase.
I'm assuming you're using tiger.

There is a workaround fix posted with bug 292530
<https://bugzilla.mozilla.org/show_bug.cgi?id=292530>

you will also likely need to set your gcc version to 3.3 via the
gcc_select tool
simply open a terminal window and type:
sudo /usr/sbin/gcc_select 3.3