ensmallen not installed in installation directory when running make install about mlpack

[rcurtin]

If you have a way to reproduce it in a clean, e.g., Ubuntu Docker container (which I could then fully reproduce), I can look into it---otherwise I agree, I'm not sure what's going on here and not sure it's reproducible. My last guess is just to nuke your build directory and try again (but maybe you already did that).

[kiner-shah]

@rcurtin Yes I tried deleting the build directory and retrying but didn't work. I think it's some issue in my system since on another system where I tried I couldn't reproduce the issue as well.

[rcurtin]

Do you have the output from the make install step? Maybe something went wrong there? I tried this on my local system and ensmallen was successfully installed:

$ ls -l ~/mlpack-install-test/include/
total 20
drwxr-xr-x 48 ryan ryan 4096 Jul 31 12:24 ensmallen_bits
-rw-r--r--  1 ryan ryan 5084 Jan 28  2023 ensmallen.hpp
drwxr-xr-x  4 ryan ryan 4096 Jul 31 12:24 mlpack
-rw-r--r--  1 ryan ryan 2970 Jun 14 09:13 mlpack.hpp

(in my case I already had all the other dependencies, so downloading Armadillo, cereal, and STB weren't needed.)

Any other output you can give, e.g., from the CMake configure step, could be helpful too. 👍

[kiner-shah]

@rcurtin Thanks for the response. It would be great if you can also try downloading dependencies using that flag.
Here are the logs and CMakeCache.txt:
build.log
cmake.log
CMakeCache.txt

[rcurtin]

I spent a while trying to reproduce this in an Ubuntu 22.04 Docker container, using exactly the instructions you gave as well as a few variations, but I couldn't. Each time ensmallen's headers are installed correctly.

Can you paste what's in cmake_install.cmake? It should have a stanza about installing ensmallen. Here is my example from the Docker container I was using:

if("x${CMAKE_INSTALL_COMPONENT}x" STREQUAL "xUnspecifiedx" OR NOT CMAKE_INSTALL_COMPONENT)
  file(INSTALL DESTINATION "${CMAKE_INSTALL_PREFIX}/include" TYPE DIRECTORY FILES "/root/mlpack-4.2.0/build/deps/armadillo-10.3.0/include/")
endif()

if("x${CMAKE_INSTALL_COMPONENT}x" STREQUAL "xUnspecifiedx" OR NOT CMAKE_INSTALL_COMPONENT)
  file(INSTALL DESTINATION "${CMAKE_INSTALL_PREFIX}/include" TYPE DIRECTORY FILES "/root/mlpack-4.2.0/build/deps/stb/include/")
endif()

if("x${CMAKE_INSTALL_COMPONENT}x" STREQUAL "xUnspecifiedx" OR NOT CMAKE_INSTALL_COMPONENT)
  file(INSTALL DESTINATION "${CMAKE_INSTALL_PREFIX}/include" TYPE DIRECTORY FILES "/root/mlpack-4.2.0/build/deps/ensmallen-2.19.1/include/")
endif()

if("x${CMAKE_INSTALL_COMPONENT}x" STREQUAL "xUnspecifiedx" OR NOT CMAKE_INSTALL_COMPONENT)
  file(INSTALL DESTINATION "${CMAKE_INSTALL_PREFIX}/include" TYPE DIRECTORY FILES "/root/mlpack-4.2.0/build/deps/cereal-1.3.0/include/")
endif()

[kiner-shah]

@rcurtin Unfortunately I cannot find the line for ensmallen in cmake_install.cmake.
cmake_install.cmake.txt
Not sure, why it doesn't work on my system. You may close this issue if it's not reproducible. Thanks for the support.