On Wed, Jul 14, 2010 at 9:08 PM, Brian Gerkey wrote: > If someone can prescribe a way to reproduce the problem, I can look into it. * Check out an svn package that depends on ROS. * Set $ROS_PACKAGE_PATH to point to boxturtle, then the package * build the package. * Change $ROS_PACKAGE_PATH to point to cturtle, then the package * (running the package produces a segfault) * building it again fails, but building it with --pre-clean works I don't recall the exact failures, but I'm pretty sure this sequence will demonstrate the problem. Getting make or rosmake to recognize and resolve the problem would be helpful. Just printing a clear error message would be nice. --  joq