diff --git a/crypto/Makefile b/crypto/Makefile
index 1969fc3b9..9a39e934a 100644
--- a/crypto/Makefile
+++ b/crypto/Makefile
@@ -55,7 +55,7 @@ top:
 all: shared
 
 buildinf.h: ../Makefile
-	$(PERL) $(TOP)/util/mkbuildinf.pl "$(CFLAGS)" "$(PLATFORM)" >buildinf.h
+	$(PERL) $(TOP)/util/mkbuildinf.pl "$(CC) $(CFLAGS)" "$(PLATFORM)" >buildinf.h
 
 x86cpuid.s:	x86cpuid.pl perlasm/x86asm.pl
 	$(PERL) x86cpuid.pl $(PERLASM_SCHEME) $(CFLAGS) $(PROCESSOR) > $@
diff --git a/util/mk1mf.pl b/util/mk1mf.pl
index 905d1db56..7d4491fae 100755
--- a/util/mk1mf.pl
+++ b/util/mk1mf.pl
@@ -665,7 +665,7 @@ open (OUT,">>crypto/buildinf.h") || die "Can't open buildinf.h";
 printf OUT <<EOF;
 #ifdef $platform_cpp_symbol
   /* auto-generated/updated by util/mk1mf.pl for crypto/cversion.c */
-  #define CFLAGS "$cc $cflags"
+  #define CFLAGS "compiler: $cc $cflags"
   #define PLATFORM "$platform"
 EOF
 printf OUT "  #define DATE \"%s\"\n", scalar gmtime();