Groovy installation pcl fail

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I've been through about a million groovy installation problems (source install on Ubuntu 12.04 32bit). This one, in particular, stumped me because I don't exactly know what's going on between the build_isolated and install_isolated directories, or how/where built libraries are installed so packages dependent on them (in the course of the install) can find them. Here's the error with the tail end of a successful package build:

<== Finished processing package [144 of 153]: 'nodelet_topic_tools'
==> Processing plain cmake package: 'pcl'
==> Building with env: '/home/sean/ros_catkin_ws/install_isolated/env.sh'
Makefile exists, skipping explicit cmake invocation...
==> make cmake_check_build_system in '/home/sean/ros_catkin_ws/build_isolated/pcl'
==> make -j4 -l4 in '/home/sean/ros_catkin_ws/build_isolated/pcl'
[  1%] Built target pcl_pcd_convert_NaN_nan
[  1%] Built target pcl_io_ply
[  2%] Built target pcl_octree
[  2%] Built target pcl_ply2obj
[  3%] Built target pcl_ply2ply
[  3%] Built target pcl_ply2raw
Linking CXX shared library ../lib/libpcl_common.so
[  4%] Built target pcl_plyheader
/usr/bin/ld: cannot find -lsensor_msgs
/usr/bin/ld: cannot find -lroscpp_serialization
/usr/bin/ld: cannot find -lrosconsole
/usr/bin/ld: cannot find -lrostime
collect2: ld returned 1 exit status
make[2]: *** [lib/libpcl_common.so.1.6.0] Error 1
make[1]: *** [common/CMakeFiles/pcl_common.dir/all] Error 2
make: *** [all] Error 2

<== Failed to process package 'pcl': 
  Command '/home/sean/ros_catkin_ws/install_isolated/env.sh make -j4 -l4' returned non-zero exit status 2

Reproduce this error by running:
==> /home/sean/ros_catkin_ws/install_isolated/env.sh make -j4 -l4

Command failed, exiting.