Index: secure/lib/libcrypto/Makefile.asm
===================================================================
--- secure/lib/libcrypto/Makefile.asm
+++ secure/lib/libcrypto/Makefile.asm
@@ -58,17 +58,23 @@
 CLEANFILES+=	sha256-x86_64.cmt sha256-x86_64.S x86_64cpuid.cmt x86_64cpuid.S
 .SUFFIXES:	.pl .cmt
 
-.pl.cmt:
-	( cd `dirname ${.IMPSRC}`/.. ; perl ${.IMPSRC} ${.OBJDIR}/${.TARGET} )
-
-.cmt.S:
-	( echo '	# $$'FreeBSD'$$'; cat ${.IMPSRC} ) > ${.TARGET}
-
-sha256-x86_64.cmt: sha512-x86_64.pl
-	( cd `dirname ${.ALLSRC}`/.. ; perl ${.ALLSRC} ${.OBJDIR}/${.TARGET} )
-
-x86_64cpuid.cmt: x86_64cpuid.pl
-	( cd `dirname ${.ALLSRC}` ; perl ${.ALLSRC} ${.OBJDIR}/${.TARGET} )
+.pl.S:
+	( cd `dirname ${.IMPSRC}`/.. ;\
+	echo '	# $$'FreeBSD'$$' ;\
+	echo '	# Generated from ${.IMPSRC:T}' ;\
+	perl ${.IMPSRC} ) > ${.OBJDIR}/${.TARGET}
+
+sha256-x86_64.S: sha512-x86_64.pl
+	( cd `dirname ${.ALLSRC}`/.. ;\
+	echo '	# $$'FreeBSD'$$' ;\
+	echo '	# Generated from ${.ALLSRC:T}' ;\
+	perl ${.ALLSRC} ) > ${.OBJDIR}/${.TARGET}
+
+x86_64cpuid.S: x86_64cpuid.pl
+	( cd `dirname ${.ALLSRC}` ;\
+	echo '	# $$'FreeBSD'$$' ;\
+	echo '	# Generated from ${.ALLSRC:T}' ;\
+	perl ${.ALLSRC} ) > ${.OBJDIR}/${.TARGET}
 
 .elif ${MACHINE_CPUARCH} == "i386"
 
@@ -136,6 +142,7 @@
 
 .pl.S:
 	( echo '	# $$'FreeBSD'$$' ;\
+	echo '	# Generated from ${.IMPSRC:T}\n' ;\
 	echo '#ifdef PIC' ;\
 	perl ${PERLPATH} ${.IMPSRC} elf ${CFLAGS} -fpic -DPIC ;\
 	echo '#else' ;\