llvm-openmp: check that the correct OpenMP runtime is being used

recipes/llvm-openmp/all/test_package/conanfile.py

@@ -1,8 +1,10 @@
-from conan import ConanFile
+import io
+import os
+
+from conan import ConanFile, conan_version
 from conan.tools.build import can_run
 from conan.tools.cmake import cmake_layout, CMake
 from conan.tools.env import Environment
-import os
 
 
 class TestPackageConan(ConanFile):
@@ -35,4 +37,11 @@ def test(self):
         if can_run(self):
             for executable in ["test_package_cxx", "test_package_c"]:
                 bin_path = os.path.join(self.cpp.build.bindir, executable)
-                self.run(bin_path, env="conanrun")
+                if conan_version.major == 1:
+                    self.run(bin_path, env="conanrun")
+                else:
+                    stderr = io.StringIO()
+                    self.run(bin_path, env="conanrun", stderr=stderr)
+                    stderr = stderr.getvalue()
+                    print(stderr)
+                    assert "LLVM OMP" in stderr