What version of Panda are you building? I know that it’s fixed on latest CVS, but I think a source package of 1.6.1 and above should work too. If it’s an outdated CVS version, I highly suggest updating.
You can hack around it by editing panda/src/pipeline/contextSwitch.c and by finding this line:
#if defined(HAVE_UCONTEXT_H)and replacing it with something that always evaluates to true.
#ifndef BLAAAHGR