Build/Compilation Error - filesystem No Such file or directory (GCC-7)

[Seongchang Park]

In your installation there are 3 steps to install ct-icp code.

[1] $ .\ct_icp_build.sh Release "Unix Makefiles" ON ON  # Builds the project in "Release" mode, with "Unix Makefiles" cmake generator, with python binding and with the visualization activated
[2] $ source env.sh                                     # Setup the environment (.so locations) 
[3] $ .\slam -c default_config.yaml                     # Launches the SLAM

I think the symbol '\' need to be changed as '/' because it is about unix system.
Anyway, when I put the command [1], the errors occur.

Error is ,

/home/bigbigpark/ct_icp/src/ct_icp/utils.hpp:5:10: fatal error: filesystem: No such file or directory
 #include <filesystem>

The library is available more than C++17. I checked CMakeLists.txt....
How can I build this package ?

Thanks

[pdell-kitware]

Hi bigbigpark,

Thanks for your comments, I will update the Readme to clarify,

Can you specify which compiler you use ?

You need a c++ compiler which fully supports C++17,
If you use GCC, you should use a version >= 9,
Or a clang version >= 8 should be fine,

If you don't want to change default C++ compiler paths on your system,

You can specify before invoking ./ct_icp_build.sh ... the following lines: (this will help CMAKE find the proper compiler)

export CC=/usr/bin/gcc-9 # path-to-gcc-9 | similarly find clang
export CXX=/usr/bin/g++-9 # path-to-g++-9 | clang++
./ct_icp_build.sh Release "Unix Makefiles" ON ON

Note: You probably need to erase the CMakeCache.txt before calling the script (otherwise CMake will use the cached compiler variables)

[Seongchang Park]

Thanks for fast replying!!

I found my compiler is gcc-7 so I updated it as gcc-9

The build is done with your help!



Plus I need a password at here https://cloud.mines-paristech.fr/index.php/s/UwgVFtiTOmrgKp5

Where can I get the password?

It said (you can find it in an answer in the issues) but I couldn't find it

[Seongchang Park]

@pdell-kitware

I found that in the closed issues!

Thanks