diff --git a/test/common.cpp b/test/common.cpp
new file mode 100644
index 0000000..8905793
--- /dev/null
+++ b/test/common.cpp
@@ -0,0 +1,5 @@
+#include "config.h"
+
+const char* ERRLOG_PERSIST_PATH = "/tmp/errors";
+const char* EXTENSION_PERSIST_DIR = "/tmp/extensions";
+const bool IS_UNIT_TEST = true;
diff --git a/test/meson.build b/test/meson.build
index 1538b7f..6bd81ac 100644
--- a/test/meson.build
+++ b/test/meson.build
@@ -41,13 +41,10 @@
         executable(
             'test-' + t.underscorify(),
             t + '.cpp',
+            'common.cpp',
             log_manager_sources,
             '../phosphor-rsyslog-config/server-conf.cpp',
             link_with: libphosphor_logging,
-            cpp_args: [
-                '-DTESTCASE=' + t.underscorify(),
-                '-DTESTCASE_' + t.underscorify(),
-            ],
             dependencies: [
                 gmock_dep,
                 gtest_dep,
diff --git a/test/openpower-pels/meson.build b/test/openpower-pels/meson.build
index 3527bed..0c7567e 100644
--- a/test/openpower-pels/meson.build
+++ b/test/openpower-pels/meson.build
@@ -63,10 +63,8 @@
     'paths.cpp',
     libpel_sources,
     peltool_sources,
+    '../common.cpp',
     '../../util.cpp',
-    cpp_args: [
-        '-DTESTCASE=openpower_test_lib',
-    ],
     include_directories: include_directories(
         '../../',
         '../../gen',
@@ -89,10 +87,6 @@
                 libphosphor_logging,
             ],
             link_args: [ '-lpython' + python_ver ],
-            cpp_args: [
-                '-DTESTCASE=' + t.underscorify(),
-                '-DTESTCASE_' + t.underscorify(),
-            ],
             dependencies: [
                 gtest_dep,
                 gmock_dep,