My build of numpy fails under Yellow Dog Linux 2.1, running on a powerpc multiprocessor board from Curtiss-Wright. Its kernel is 2.4.19-Asmp tailored by the vendor. The gcc compiler is configured as ppc-yellowdog-linux with version number 2.95.3 20010111. The python I'm using is Python 2.5.1 (r251:54863) installed as python2. Plain /usr/bin/python is 1.5.x . The numpy version I'm trying to build is r4003 for v1.0.4 . The setup fails compiling build/src.linux-ppc-2.5/numpy/core/src/umathmodule.c with a long list of error messages of the following two kinds. warning: conflicting types for built-in function `sinl' repeated for `cosl', `fabsl', and `sqrtl', triggered by line 442. inconsistent operand constraints in an `asm', triggered by lines 1100, 1124, 1150, 1755, 1785, and 1834. I cannot see on those source lines what causes such a message; I suspect there is some long complicated cpp macro or asm statement in some include file which I don't find. Has anyone tried building numpy on Yellow Dog Linux or on a PowerPC with gcc? Vincent Broman broman@spawar.navy.mil