Modified doc/make.py to run sphinx-build -b linkcheck

doc/make.py

@@ -288,6 +288,19 @@ def zip_html(self):
         os.chdir(dirname)
         self._run_os("zip", zip_fname, "-r", "-q", *fnames)
 
+    def linkcheck(self):
+        """
+        Check for broken links in the documentation.
+        """
+        cmd = ["_sphinx_build", "-b", "linkcheck"]
+        cmd += [
+            "-d",
+            os.path.join(BUILD_PATH, "doctrees"),
+            SOURCE_PATH,
+            os.path.join(BUILD_PATH, "linkcheck"),
+        ]
+        subprocess.call(cmd)
+
 
 def main():
     cmds = [method for method in dir(DocBuilder) if not method.startswith("_")]
@@ -369,7 +382,9 @@ def main():
         args.verbosity,
         args.warnings_are_errors,
     )
-    return getattr(builder, args.command)()
+
+    if args.command == "linkcheck":
+        builder.linkcheck()
 
 
 if __name__ == "__main__":