For the most part, I’ve had no real issues building {pkgsrc} on my {PogoPlug}, but all three variants of {MySQL} server failed to build due to a conflicting type declaration error. For the 2011Q2 branch of pkgsrc and the mysql55-server package, simply comment out the offending line 169 in sql/ so that it reads:

#ifdef HAVE_FP_EXCEPT // Fix type conflict
//typedef fp_except fp_except_t;