Look for asm/mmx.h. Rev: src/configure.in:1.740 Rev: src/main.c:1.182 Rev: src/modules/Image/encodings/neo.c:1.4 Rev: src/modules/Image/encodings/xcf.c:1.45 Rev: src/modules/Image/layers.c:1.90 Rev: src/port.c:1.76