error: the value of ‘NrDims’ is not usable in a constant expression

[ZaynabEM]

Greeting,

I was building the code and got the following error :

error: the value of ‘NrDims’ is not usable in a constant expression

I checked the build dependencies and they match the requirements.

• cmake version 3.22.1
• GNU Make 4.3
• gcc (Ubuntu 11.4.0-1ubuntu1~22.04) 11.4.0
• g++ (Ubuntu 11.4.0-1ubuntu1~22.04) 11.4.0
• libpcl-dev is already the newest version (1.12.1+dfsg-3build1).

There are a series of errors, here is the last one :

/usr/include/pcl-1.12/pcl/point_representation.h:310:7:   required from here
/usr/include/pcl-1.12/pcl/point_representation.h:254:48: error: the value of ‘NrDims’ is not usable in a constant expression
/usr/include/pcl-1.12/pcl/point_representation.h:253:19: note: ‘NrDims’ was not initialized with a constant expression
  253 |         const int NrDims = pcl::traits::datatype<PointDefault, Key>::size;
      |                   ^~~~~~
/usr/include/pcl-1.12/pcl/point_representation.h:254:48: note: in template argument for type ‘int’
  254 |         Helper<Key, FieldT, NrDims>::copyPoint (p1_, p2_, f_idx_);
      |         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~
make[2]: *** [CMakeFiles/environment.dir/build.make:76: CMakeFiles/environment.dir/src/environment.cpp.o] Error 1
make[1]: *** [CMakeFiles/Makefile2:83: CMakeFiles/environment.dir/all] Error 2
make: *** [Makefile:91: all] Error 2

Any idea on how to fix this ?

[thebirdgr]

Same I have this issue too. Installing inside docker.

[thebirdgr]

Okay found the fix from: XidianLemon/calibration_camera_lidar#28

Upgrade to C17++.

add_definitions(-std=c++11) change to add_definitions(-std=c++17)

In CMakeLists.txt