Use empty blas_ldflags if no cxx is configured

pymc-devs · Nov 20, 2023 · 2bb847c · 2bb847c
1 parent 7eafb6c
commit 2bb847c
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diff --git a/pytensor/link/c/cmodule.py b/pytensor/link/c/cmodule.py
@@ -2773,6 +2773,9 @@ def check_libs(
         else:
             raise RuntimeError(f"Supplied flags {flags} failed to compile")
 
+    # If no compiler is available we default to empty ldflags
+    if not config.cxx:
+        return ""
     _std_lib_dirs = std_lib_dirs()
     if len(_std_lib_dirs) > 0:
         rpath = _std_lib_dirs[0]

diff --git a/tests/link/c/test_cmodule.py b/tests/link/c/test_cmodule.py
@@ -226,6 +226,11 @@ def test_default_blas_ldflags(
             )
 
 
+def test_default_blas_ldflags_no_cxx():
+    with pytensor.config.change_flags(cxx=""):
+        assert default_blas_ldflags() == ""
+
+
 @patch(
     "os.listdir", return_value=["mkl_core.1.dll", "mkl_rt.1.0.dll", "mkl_rt.1.1.lib"]
 )