diff --git a/var/spack/repos/builtin/packages/pthreadpool/package.py b/var/spack/repos/builtin/packages/pthreadpool/package.py
index 2754fef9b7c..5ccb439496a 100644
--- a/var/spack/repos/builtin/packages/pthreadpool/package.py
+++ b/var/spack/repos/builtin/packages/pthreadpool/package.py
@@ -67,4 +67,5 @@ def cmake_args(self):
             self.define("PTHREADPOOL_BUILD_BENCHMARKS", False),
             self.define("PTHREADPOOL_LIBRARY_TYPE", "static"),
             self.define("PTHREADPOOL_ALLOW_DEPRECATED_API", True),
+            self.define("CMAKE_POSITION_INDEPENDENT_CODE", True),
         ]