[3.15] gh-98894: Skip test_dtrace when building without dtrace (GH-152239) (#152300)

gh-98894: Skip test_dtrace when building without dtrace (GH-152239)
(cherry picked from commit 6713576)

Co-authored-by: stratakis <cstratak@redhat.com>

Author: miss-islington

Lib/test/test_dtrace.py

@@ -14,6 +14,10 @@
 
 if not support.has_subprocess_support:
     raise unittest.SkipTest("test module requires subprocess")
+if not sysconfig.get_config_var('WITH_DTRACE'):
+    raise unittest.SkipTest(
+        "CPython must be configured with the --with-dtrace option."
+    )
 
 
 def abspath(filename):
@@ -397,12 +401,9 @@ class BPFTraceOptimizedTests(TraceTests, unittest.TestCase):
 class CheckDtraceProbes(unittest.TestCase):
     @classmethod
     def setUpClass(cls):
-        if sysconfig.get_config_var('WITH_DTRACE'):
-            readelf_major_version, readelf_minor_version = cls.get_readelf_version()
-            if support.verbose:
-                print(f"readelf version: {readelf_major_version}.{readelf_minor_version}")
-        else:
-            raise unittest.SkipTest("CPython must be configured with the --with-dtrace option.")
+        readelf_major_version, readelf_minor_version = cls.get_readelf_version()
+        if support.verbose:
+            print(f"readelf version: {readelf_major_version}.{readelf_minor_version}")
 
 
     @staticmethod