added warning to test 30 coverage is not installed

compiler/globals.py

@@ -113,6 +113,11 @@ def check_versions():
     except:
         OPTS.datasheet_gen = 0
 
+    try:
+        import coverage
+        OPTS.coverage = 1
+    except:
+        OPTS.coverage = 0
 
 def init_openram(config_file, is_unit_test=True):
     """Initialize the technology, paths, simulators, etc."""

compiler/tests/30_openram_test.py

@@ -43,6 +43,8 @@ class openram_test(openram_test):
             
         OPENRAM_HOME = os.path.abspath(os.environ.get("OPENRAM_HOME"))
         # Always perform code coverage
+        if OPTS.coverage == 0:
+            debug.warning("Failed to find coverage installation. This can be installed with pip3 install coverage")
         exe_name = "coverage run -p {0}/openram.py ".format(OPENRAM_HOME)
         cmd = "{0} -n -o {1} -p {2} {3} config_20_{4}.py 2>&1 > {5}/output.log".format(exe_name,
                                                                                        out_file,