CGENFLAGS = -v
CGEN_CPU_DIR = $(CGENDIR)/cpu
+# Most ports use the files here instead of cgen/cpu.
+CPU_DIR = $(srcroot)/cpu
+
CGEN_READ_SCM = $(CGENDIR)/sim.scm
CGEN_ARCH_SCM = $(CGENDIR)/sim-arch.scm
CGEN_CPU_SCM = $(CGENDIR)/sim-cpu.scm $(CGENDIR)/sim-model.scm