Hi, I'd be happy to hear from those have knowledge to suggest a fix. <http://trac.macosforge.org/projects/macports/ticket/11613> fftw-3-sigle does not build on my MacBook Pro. I should fix this because I am the maintainer of fftw-3 and I need this for GDL. But the error below is beyond my ability. gcc -std=gnu99 -DHAVE_CONFIG_H -I. -I. -I.. -I../simd -O3 -fomit- frame-pointer -malign-double -fstrict-aliasing -ffast-math - march=pentiumpro -D_THREAD_SAFE -MT trig.lo -MD -MP -MF .deps/ trig.Tpo -c trig.c -o trig.o /var/tmp//ccMMtwDn.s:99:operands given don't match any known 386 instruction /var/tmp//ccMMtwDn.s:100:operands given don't match any known 386 instruction /var/tmp//ccMMtwDn.s:132:operands given don't match any known 386 instruction /var/tmp//ccMMtwDn.s:134:operands given don't match any known 386 instruction /var/tmp//ccMMtwDn.s:167:operands given don't match any known 386 instruction /var/tmp//ccMMtwDn.s:168:operands given don't match any known 386 instruction make[2]: *** [trig.lo] Error 1 make[1]: *** [all-recursive] Error 1 make: *** [all] Error 2