$(PERL) $< $(PERLASM_SCHEME) $@
sha1-alpha.s: asm/sha1-alpha.pl
- $(PERL) $< | $(CC) -E - | tee $@ > /dev/null
+ (preproc=/tmp/$$$$.$@; trap "rm $$preproc" INT; \
+ $(PERL) asm/sha1-alpha.pl > $$preproc && \
+ $(CC) -E $$preproc > $@ && rm $$preproc)
# Solaris make has to be explicitly told
sha1-x86_64.s: asm/sha1-x86_64.pl; $(PERL) asm/sha1-x86_64.pl $(PERLASM_SCHEME) > $@