diff --git a/openmp/runtime/test/ompt/callback.h b/openmp/runtime/test/ompt/callback.h
index 6dc8834cffd28..3befe7c5d77be 100755
--- a/openmp/runtime/test/ompt/callback.h
+++ b/openmp/runtime/test/ompt/callback.h
@@ -1,4 +1,5 @@
 #define _BSD_SOURCE
+#define _DEFAULT_SOURCE
 #include <stdio.h>
 #include <inttypes.h>
 #include <omp.h>
diff --git a/openmp/runtime/test/ompt/loadtool/tool_available.c b/openmp/runtime/test/ompt/loadtool/tool_available.c
index a6a79fe062ff2..dc00b033daa69 100644
--- a/openmp/runtime/test/ompt/loadtool/tool_available.c
+++ b/openmp/runtime/test/ompt/loadtool/tool_available.c
@@ -7,9 +7,9 @@
 // RUN: %clang %flags -DTOOL -shared -fPIC %s -o %T/tool.so
 // 2. "introducing a dynamically-linked library that includes the tool’s definition of ompt_start_tool into the application’s address space"
 // 2.1 Link with tool during compilation
-// RUN: %libomp-compile -DCODE %T/tool.so && %libomp-run | FileCheck %s
+// RUN: %libomp-compile -DCODE -Wl,--no-as-needed %T/tool.so && %libomp-run | FileCheck %s
 // 2.2 Link with tool during compilation, but AFTER the runtime
-// RUN: %libomp-compile -DCODE -lomp %T/tool.so && %libomp-run | FileCheck %s
+// RUN: %libomp-compile -DCODE -lomp -Wl,--no-as-needed %T/tool.so && %libomp-run | FileCheck %s
 // 2.3 Inject tool via the dynamic loader
 // RUN: %libomp-compile -DCODE && %preload-tool %libomp-run | FileCheck %s