make depend: prefer clang over makedepend

Reviewed-by: NRich Salz <rsalz@openssl.org>

Configure

@@ -1635,10 +1635,11 @@ if ($shlib_version_number =~ /(^[0-9]*)\.([0-9\.]*)/)
 	$shlib_minor=$2;
 	}
 
+my $ecc = $cc;
+$ecc = "clang" if `$cc --version 2>&1` =~ /clang/;
+
 if ($strict_warnings)
 	{
-	my $ecc = $cc;
-	$ecc = "clang" if `$cc --version 2>&1` =~ /clang/;
 	my $wopt;
 	die "ERROR --strict-warnings requires gcc or clang" unless ($ecc =~ /gcc(-\d(\.\d)*)?$/ or $ecc =~ /clang$/);
 	foreach $wopt (split /\s+/, $gcc_devteam_warn)
@@ -1703,7 +1704,7 @@ while (<IN>)
 		s/^CC=.*$/CC= $cc/;
 		s/^AR=\s*ar/AR= $ar/;
 		s/^RANLIB=.*/RANLIB= $ranlib/;
-		s/^MAKEDEPPROG=.*$/MAKEDEPPROG= $cc/ if $cc eq "gcc" || ($cc eq 'cc' && $target =~ /darwin/);
+		s/^MAKEDEPPROG=.*$/MAKEDEPPROG= $cc/ if $ecc eq "gcc" || $ecc eq "clang";
 		}
 	s/^CFLAG=.*$/CFLAG= $cflags/;
 	s/^DEPFLAG=.*$/DEPFLAG=$depflags/;

util/domd

@@ -12,7 +12,8 @@ fi
 if [ "$MAKEDEPEND" = "" ]; then MAKEDEPEND=makedepend; fi
 
 cp Makefile Makefile.save
-if expr "$MAKEDEPEND" : '.*cc' > /dev/null; then
+if ${MAKEDEPEND} --version 2>&1 | grep -q "clang" ||
+   echo $MAKEDEPEND | grep -q "gcc"; then
     args=""
     while [ $# -gt 0 ]; do
 	if [ "$1" != "--" ]; then args="$args $1"; fi