-DBUILD_EXAMPLES:BOOL=ON causes cmake error.

[tokjun]

When cmake is called with -DBUILD_EXAMPLES:BOOL=ON, it gives the following error:

CMake Error at Examples/Tracker/CMakeLists.txt:8 (find_package):
  By not providing "FindOpenIGTLink.cmake" in CMAKE_MODULE_PATH this project
  has asked CMake to find a package configuration file provided by
  "OpenIGTLink", but CMake did not find one.

  Could not find a package configuration file provided by "OpenIGTLink" with
  any of the following names:

    OpenIGTLinkConfig.cmake
    openigtlink-config.cmake

  Add the installation prefix of "OpenIGTLink" to CMAKE_PREFIX_PATH or set
  "OpenIGTLink_DIR" to a directory containing one of the above files.  If
  "OpenIGTLink" provides a separate development package or SDK, be sure it
  has been installed.


-- Configuring incomplete, errors occurred!
See also "/home/junichi/igtdev/igtl/OpenIGTLink-build/CMakeFiles/CMakeOutput.log".
See also "/home/junichi/igtdev/igtl/OpenIGTLink-build/CMakeFiles/CMakeError.log".

[adamrankin]

Executables within the project should not need to call find_package on OpenIGTLink as the targets are already available. Just link to OpenIGTLink

[EL-SHREIF]

But what if you need itg from outside this project?