add compile only arg

cocotb/caravel_cocotb/__main__.py

@@ -90,6 +90,7 @@ def main():
     parser.add_argument("--run_defaults", action="store_true", help=argparse.SUPPRESS)  # this used to run the default tests the flag is hidden because it just used with caravel verification flow
     parser.add_argument("--CI", action="store_true", help=argparse.SUPPRESS)   # used only for CI to run docker in non interactive mode
     parser.add_argument("--progress", action="store_true", help=argparse.SUPPRESS)   # used only for external CI to run docker in non interactive mode
+    parser.add_argument("--compile_only", action="store_true", help=argparse.SUPPRESS)   # used to only compile without running
     parser.add_argument("-no_gen_defaults", action="store_true", help="don't run gen_gpio_defaults script")
     # Add a --version option
     parser.add_argument('--version', action='version', version='%(prog)s ' + __version__)

cocotb/caravel_cocotb/scripts/verify_cocotb/RunFlow.py

@@ -240,6 +240,7 @@ def __init__(
         run_defaults=False,
         CI=False,
         progress=False,
+        compile_only=False,
         no_gen_defaults=False
     ) -> None:
         self.test = test
@@ -269,6 +270,7 @@ def __init__(
         self.run_defaults = run_defaults
         self.CI = CI
         self.progress = progress
+        self.compile_only = compile_only
         self.no_gen_defaults = no_gen_defaults
 
     def argparse_to_CocotbArgs(self, args):
@@ -296,4 +298,5 @@ def argparse_to_CocotbArgs(self, args):
         self.run_defaults = args.run_defaults
         self.CI = args.CI
         self.progress = args.progress
+        self.compile_only = args.compile_only
         self.no_gen_defaults = args.no_gen_defaults

cocotb/caravel_cocotb/scripts/verify_cocotb/RunTest.py

@@ -120,7 +120,8 @@ def runTest_iverilog(self):
         self.write_iverilog_includes_file()
         if not os.path.isfile(f"{self.test.compilation_dir}/sim.vvp") or self.args.compile:
             self.iverilog_compile()
-        self.iverilog_run()
+        if not self.args.compile_only:
+            self.iverilog_run()
 
     def write_iverilog_includes_file(self):
         self.iverilog_dirs = " "
@@ -179,7 +180,8 @@ def runTest_vcs(self):
         os.environ["MODULE"] = "module_trail"
         if not os.path.isfile(f"{self.test.compilation_dir}/simv") or self.args.compile:
             self.vcs_compile()
-        self.vcs_run()
+        if not self.args.compile_only:
+            self.vcs_run()
 
     def write_vcs_includes_file(self):
         # self.vcs_dirs = f'+incdir+\\"{self.paths.PDK_ROOT}/{self.paths.PDK}\\" '