[#34305] cancel if c4che infos are not provided

lib/hgaster/hooks/codeaster.py

@@ -134,6 +134,9 @@ def run_ctest_minimal(repopath):
         target = "debug"
     wafc4che = osp.join(builddir, "c4che", target + "_cache.py")
     c4che = read_waf_parameters(wafc4che)
+    if not c4che:
+        logger.warning("Can not find installation directory. Cancelled.")
+        return OK
     run_ctest = Path(c4che["BINDIR"]) / "run_ctest"
 
     logger.info("NB: This version will be used: %s", run_ctest)