test: Add test for option "linktype"

Signed-off-by: Eugene Loh <eugene.loh@oracle.com>
Reviewed-by: Kris Van Hees <kris.van.hees@oracle.com>

test/unittest/options/tst.linktype.r

@@ -0,0 +1,10 @@
+link pass:
+objdump recognizes elf
+link pass: -xlinktype=elf
+objdump recognizes elf
+link pass: -xlinktype=dof
+objdump does NOT recognize file format
+link FAIL: -xlinktype=foo
+objdump does NOT recognize file format
+-- @@stderr --
+dtrace: failed to set -x linktype: Invalid value for specified option

test/unittest/options/tst.linktype.sh

@@ -0,0 +1,80 @@
+#!/bin/bash
+#
+# Oracle Linux DTrace.
+# Copyright (c) 2023, Oracle and/or its affiliates. All rights reserved.
+# Licensed under the Universal Permissive License v 1.0 as shown at
+# http://oss.oracle.com/licenses/upl.
+#
+
+# @@nosort
+
+dtrace=$1
+CC=/usr/bin/gcc
+CFLAGS=
+
+DIRNAME="$tmpdir/linktype.$$.$RANDOM"
+mkdir -p $DIRNAME
+cd $DIRNAME
+
+# set up the prov.d file and compile
+
+cat > prov.d <<EOF
+provider test_prov {
+	probe go();
+};
+EOF
+
+$dtrace -h -s prov.d
+if [ $? -ne 0 ]; then
+	echo "failed to generate header file" >& 2
+	exit 1
+fi
+
+# set up the test.c file and compile
+
+cat > test.c <<EOF
+#include <sys/types.h>
+#include "prov.h"
+int main(int argc, char **argv)
+{
+	TEST_PROV_GO();
+	return 0;
+}
+EOF
+
+${CC} ${CFLAGS} -c test.c
+if [ $? -ne 0 ]; then
+	echo "failed to compile test.c" >& 2
+	exit 1
+fi
+
+# link with different -xlinktype values
+
+function mytest() {
+	$dtrace -G $1 -s prov.d test.o
+
+	# report whether the link succeeded
+	if [ $? -ne 0 ]; then
+		echo "link FAIL:" $1
+	else
+		echo "link pass:" $1
+	fi
+
+	# report whether the file format is recognized
+	objdump --file-headers prov.o |& awk '
+	    /format not recognized/ {
+		print "objdump does NOT recognize file format";
+		exit(0);
+	    }
+	    /file format elf/ {
+		print "objdump recognizes elf";
+		exit(0);
+	    }'
+}
+
+mytest " "              # link should pass, file format should be recognized
+mytest -xlinktype=elf   # link should pass, file format should be recognized
+mytest -xlinktype=dof   # link should pass, file format should NOT be recognized
+mytest -xlinktype=foo   # link should FAIL, file format should NOT be recognized
+
+exit 0