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-rw-r--r--crypto/sha/Makefile4
1 files changed, 3 insertions, 1 deletions
diff --git a/crypto/sha/Makefile b/crypto/sha/Makefile
index 6d191d3936..2eb2b7af99 100644
--- a/crypto/sha/Makefile
+++ b/crypto/sha/Makefile
@@ -60,7 +60,9 @@ sha256-armv4.S: asm/sha256-armv4.pl
$(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) > $@