Add comments about using clang instead of gcc on x86.

CPP_DEFINE_OPTIONS += -DUNICODE

endif

# Default to using gcc

CC = gcc

# But we can use clang.

#

# However, clang seems to want to use SSE instructions in various

# places, but we DON'T want that because we need a lisp that will run

# on chips without sse.

#

# But on Mac, every machine has SSE2 so we can use SSE2.  However,

# there's some code path through GC or allocation where we aren't

# saving the FPU state so after GC or allocation, some XMM FP

# registers are corrupted.  

#

# Got that?

#CC = clang -mno-sse

LD = ld

ifeq ($(filter 2% 3%, $(shell $(CC) -dumpversion)),)

# -ffloat-store and -fno-strict-aliasing anymore.

e_rem_pio2.o : e_rem_pio2.c

	$(CC) -c $(CFLAGS) $(CPPFLAGS) $<

# 

gencgc.o : gencgc.c

	$(CC) -c -mno-sse $(CFLAGS) $(CPPFLAGS) $<

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