catkin_make编译ROS中pointcloud_to_laserscan模块报
error: expected constructor, destructor, or type conversion before ‘(’ token 241 | PLUGINLIB_DECLARE_CLASS(pointcloud_to_laserscan, PointCloudToLaserScanNodelet, pointcloud_to_laserscan::PointCloudToLaserScanNodelet, nodelet::Nodelet); | ^ make[2]: *** [CMakeFiles/pointcloud_to_laserscan.dir/build.make:63：CMakeFiles/pointcloud_to_laserscan.dir/src/pointcloud_to_laserscan_nodelet.cpp.o] 错误 1 make[1]: *** [CMakeFiles/Makefile2:1677：CMakeFiles/pointcloud_to_laserscan.dir/all] 错误 2 make: *** [Makefile:141：all] 错误 2
错误。
解决方法：
将该处代码修改为:
PLUGINLIB_EXPORT_CLASS(pointcloud_to_laserscan::PointCloudToLaserScanNodelet, nodelet::Nodelet);
注意原始代码中的宏是PLUGINLIB_DECLARE_CLASS，而修改后的是PLUGINLIB_EXPORT_CLASS。
解决ROS中PLUGINLIB_DECLARE_CLASS错误
原文：https://www.cnblogs.com/tiandsp/p/15095121.html