tests: Check for btorsim --vcd

tests/make/required_tools.py

@@ -0,0 +1,64 @@
+import shutil
+
+REQUIRED_TOOLS = {
+    ("smtbmc", "yices"): ["yices-smt2"],
+    ("smtbmc", "z3"): ["z3"],
+    ("smtbmc", "cvc4"): ["cvc4"],
+    ("smtbmc", "mathsat"): ["mathsat"],
+    ("smtbmc", "boolector"): ["boolector"],
+    ("smtbmc", "bitwuzla"): ["bitwuzla"],
+    ("smtbmc", "abc"): ["yosys-abc"],
+    ("aiger", "suprove"): ["suprove", "yices"],
+    ("aiger", "avy"): ["avy", "yices"],
+    ("aiger", "aigbmc"): ["aigbmc", "yices"],
+    ("btor", "btormc"): ["btormc", "btorsim"],
+    ("btor", "pono"): ["pono", "btorsim"],
+    ("abc"): ["yices"],
+}
+
+
+if __name__ == "__main__":
+    import subprocess
+    import sys
+    from pathlib import Path
+
+    found_tools = []
+    check_tools = set()
+    for tools in REQUIRED_TOOLS.values():
+        check_tools.update(tools)
+
+    for tool in sorted(check_tools):
+        if not shutil.which(tool):
+            continue
+
+        if tool == "btorsim":
+            error_msg = subprocess.run(
+                ["btorsim", "--vcd"],
+                capture_output=True,
+                text=True,
+            ).stderr
+            if "invalid command line option" in error_msg:
+                print(
+                    "found `btorsim` binary is too old "
+                    "to support the `--vcd` option, ignoring"
+                )
+                continue
+
+        found_tools.append(tool)
+
+    found_tools = "\n".join(found_tools + [""])
+
+    try:
+        with open("make/rules/found_tools") as found_tools_file:
+            if found_tools_file.read() == found_tools:
+                exit(0)
+    except FileNotFoundError:
+        pass
+
+    Path("make/rules").mkdir(exist_ok=True)
+
+    with open("make/rules/found_tools", "w") as found_tools_file:
+        found_tools_file.write(found_tools)
+else:
+    with open("make/rules/found_tools") as found_tools_file:
+        found_tools = [tool.strip() for tool in found_tools_file.readlines()]