Now that mailparse is in PECL, building it fails because it has a dependency on the mbstring extension.
The solution is to copy the relevant headers (mbfilter.h, mbstring.h) into /usr/local/include/php/ext/mbstring. I've had a look around and I can't find where or how to get the build system to install those headers. Could someone enlighten me on how to do this? Thanks, --Wez.
