[ros-users] CMake problem on NFS-mounted directories

[Mrinal Kalakrishnan]

Hi all,

I have a problem compiling ROS packages when the package is located in
an NFS-mounted directory. I just created a new package using
roscreate-pkg, and then when I run make, this is what I get:

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mkdir -p bin
cd build && cmake -Wdev -DCMAKE_TOOLCHAIN_FILE=`rospack find
rosbuild`/rostoolchain.cmake  ..
CMake Error at /opt/ros/cturtle/ros/core/rosbuild/public.cmake:136
(get_filename_component):
  get_filename_component called with incorrect number of arguments
Call Stack (most recent call first):
  CMakeLists.txt:12 (rosbuild_init)
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Looking into public.cmake:136, I see this code:

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  get_filename_component(_project ${PROJECT_SOURCE_DIR} NAME)
  message("[rosbuild] Building package ${_project}")

  project(${_project})
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It turns out that ${PROJECT_SOURCE_DIR} is empty when
get_filename_component() is called. As far as the CMake documentation
goes, PROJECT_SOURCE_DIR is set by the project() command, which is
only called 3 lines after it's being used here. I don't understand how
this works normally. When I create my package on a local drive
instead, ${PROJECT_SOURCE_DIR} is already valid when it comes to that
line in the code, so it works just fine.

Any help would be appreciated. Thanks in advance,
- Mrinal