[test] Set CLANG_VERSION in support using interpreter

Author: aaronj0

.github/workflows/MacOS.yml

@@ -566,6 +566,7 @@ jobs:
         python -m pip install pytest
         python -m pip install pytest-xdist
         python -m pip install numba
+        python -m pip install regex
         echo ::endgroup::
         echo ::group::Run complete test suite
         set -o pipefail

.github/workflows/Ubuntu.yml

@@ -669,6 +669,7 @@ jobs:
         python -m uv pip install pytest-xdist
         python -m uv pip install numba
         python -m uv pip install psutil
+        python -m uv pip install regex
         echo ::endgroup::
         echo ::group::Run complete test suite
         set -o pipefail

test/support.py

@@ -1,5 +1,6 @@
 from __future__ import print_function
 import os, py, sys, subprocess
+import regex as re
 
 currpath = py.path.local(__file__).dirpath()
 
@@ -74,3 +75,7 @@ def setup_make(targetname):
                                             true
                                             #endif\n""") == 1)
 IS_CLING = not IS_CLANG_REPL
+
+version_str = cppyy.gbl.Cpp.GetVersion()
+match = re.search(r'clang version (\d+)', version_str)
+CLANG_VER = int(match.group(1)) if match else None

test/test_cpp11features.py

@@ -1,6 +1,6 @@
 import py, os, sys
 from pytest import raises, mark
-from .support import setup_make, ispypy, IS_CLANG_REPL, IS_LINUX_ARM, IS_MAC, IS_CLING
+from .support import setup_make, ispypy, IS_CLANG_REPL, IS_LINUX_ARM, IS_MAC, IS_CLING, CLANG_VER
 
 
 currpath = py.path.local(__file__).dirpath()