Fix CI build failure with Clang

Author: Takishima

.github/workflows/ci.yml

@@ -124,6 +124,11 @@ jobs:
         python3-pytest python3-pytest-cov python3-flaky
         --no-install-recommends
 
+    - name: Fix Python LDSHARED
+      run: |
+        ld_args=$(python3 -c "import sysconfig; print(' '.join(sysconfig.get_config_var('LDSHARED').split()[1:]))")
+        echo "LDSHARED='clang $ld_args'" >> $GITHUB_ENV
+
     - name: Prepare Python env
       run: |
         python3 setup.py gen_reqfile --include-extras