Dependencies are not installed with `make install`

[kohrt]

Dependencies in the depends folders are not installed with 'make install'.
Could be fixed by adding the following lines to the end of CMakeLists.txt:

install_files(/ FILES "${MY_DIR}/../../depends/glew/")
install_files(/ FILES "${MY_DIR}/../../depends/libusb/")

or maybe by installing them from the install_deps.sh script.

[christiankerl]

short question, if there is a system installation of libusb will libfreenect2 still use the custom one installed alongside?

[kohrt]

If the environment paths are setup correctly, yes. Just checked with ldd.
Before installing them, libfreenect2.so pointed to the libusb system library which probably does not contain the patch and libglewmx was not found.

By the way, is GLEWmx 1.11 needed, or is 1.10 sufficient? In 14.04 comes with a 1.10 package.

[christiankerl]

you could try with GLEW 1.10, I had some issues with an older version available in 12.04 otherwise making OpenGL optional as we've done with OpenCL would also be fine.

Is static linking libusb an option?

[kohrt]

For statically linking libusb I had to enable -fPIC and changed the config command in install_deps.sh to ./configure --prefix=$LIBUSB_INSTALL_DIR CFLAGS="$CFLAGS -fPIC". I also changed the name of usb-1.0 to usb-1.0.a in the CMakeLists.txt. I think this is a good solution to not run into problems with installed system libraries.

I installed 'libglewmx-dev'. I commented out the glew section in the CMakeLists.txt. And libfreenect2 was compiling and running fine.

The glew section should then probably changed to

# GLEW
FIND_PACKAGE(GLEW REQUIRED)
INCLUDE_DIRECTORIES(${GLEW_INCLUDE_DIR})

[goldhoorn]

From my opinion CMake should NOT do the dependency install.
CMake is not made for such stuff, CMake is a build system for one package.

To keep a easy way of use, the install of dependancies could be done by the user or helping script like install_deps.sh BEFORE the build starts. This would also solve the issue of creating different search-paths for local/internal deps as discusses in #68

[christiankerl]

@wiedemeyer how did you deal with undefined references to udev functions?

[kohrt]

This can be fixed by adding udev to target_link_libraries.
I don't know where it comes from. On my machine (14.04) it is working without this undefined references to udev. Could it be that this problem only occurs on 12.04 but not on 14.04?

[christiankerl]

maybe its 12.04. Meanwhile, I found another solution to use the custom build of libusb. This requires the following changes to CMakeLists.txt.

change libusb setup, somehow it is important to have an absolute path

# LibUSB
GET_FILENAME_COMPONENT(LIBUSB_DIR "${MY_DIR}/../../depends/libusb/" REALPATH)

INCLUDE_DIRECTORIES("${LIBUSB_DIR}/include/libusb-1.0/")
LINK_DIRECTORIES("${LIBUSB_DIR}/lib/")

and add:

SET(CMAKE_INSTALL_RPATH_USE_LINK_PATH TRUE)

afterwards ldd of the installed libfreenect2.so will point to the correct libusb.

[kohrt]

that's also fine.

[kohrt]

@christiankerl: will you add those changes to the upstream any time soon?

[christiankerl]

I'm not sure if this solution works, if libfreenect2 is not built locally from source (e.g. if you want to create a ros debian package, including libfreenect2)

[Edwinzero]

Hey guys, I think actually glew path that set in the .sh file doesn't contains the src files.
It will give error when you run the .sh file.