Unable to install the latest version of Neper that is 4.10.2-22

[Noshin06]

Hello Romain,
I hope you are doing well. As per your suggestions, I tried to install the latest version of Neper, which is 4.10.2-22, but I am facing difficulties because an error occurs repeatedly during the installation process. The error is

noshin@tuhinm-grad06:/mnt/c/Ubantu_app_software$ cd neper-latest
noshin@tuhinm-grad06:/mnt/c/Ubantu_app_software/neper-latest$ cd neper-main
noshin@tuhinm-grad06:/mnt/c/Ubantu_app_software/neper-latest/neper-main$ cd src
noshin@tuhinm-grad06:/mnt/c/Ubantu_app_software/neper-latest/neper-main/src$ mkdir build
noshin@tuhinm-grad06:/mnt/c/Ubantu_app_software/neper-latest/neper-main/src$ cd build
noshin@tuhinm-grad06:/mnt/c/Ubantu_app_software/neper-latest/neper-main/src/build$ cmake ..
-- The C compiler identification is GNU 13.3.0
-- The CXX compiler identification is GNU 13.3.0
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: /usr/bin/cc - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /usr/bin/c++ - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Found OpenMP_C: -fopenmp (found version "4.5")
-- Found OpenMP_CXX: -fopenmp (found version "4.5")
-- Found OpenMP: TRUE (found version "4.5")
-- Found Scotch: /usr/lib/x86_64-linux-gnu/libscotch.so
-- Found NLopt: /usr/lib/x86_64-linux-gnu/libnlopt.so
-- Neper is set to be installed in: /usr/local/bin and /usr/share
-- Configuring done (20.5s)
CMake Error at neper_t/CMakeLists.txt:31 (add_library):
  Cannot find source file:

./net_tess/net_tess_opt/net_tess_opt_comp/net_tess_opt_comp_objective/net_tess_opt_comp_objective_fval/net_tess_opt_comp_objective_fval_gen/net_tess_opt_comp_objective_fval_gen_stat/net_tess_opt_comp_objective_fval_gen_stat1.c

  Tried extensions .c .C .c++ .cc .cpp .cxx .cu .mpp .m .M .mm .ixx .cppm
  .ccm .cxxm .c++m .h .hh .h++ .hm .hpp .hxx .in .txx .f .F .for .f77 .f90
  .f95 .f03 .hip .ispc

CMake Error at neper_t/CMakeLists.txt:31 (add_library):
  No SOURCES given to target: neper_t

The CMake Generate step failed. Build files cannot be regenerated correctly."

I am actually clueless about how I can figure it out, and I have installed the source code in zip file where link is given below, which is taken from your website suggestions. After extracting the file and following the command from this installation file, I got the error message. What should I do right now? Do I have to uninstall the Neper of the previous version, which I am using, v 4.10.1, or can you please provide me the latest version if possible? It would be really helpful if you could look into this matter and provide me with a solution for updating to the latest version.

link: https://neper.info/downloads.html#latest-version

Regards,
Noshin Tasnim Tuli

[rquey]

Any of the methods listed in https://neper.info/downloads.html#latest-version should work. Make sure that the file ./net_tess/net_tess_opt/net_tess_opt_comp/net_tess_opt_comp_objective/net_tess_opt_comp_objective_fval/net_tess_opt_comp_objective_fval_gen/net_tess_opt_comp_objective_fval_gen_stat/net_tess_opt_comp_objective_fval_gen_stat1.c exists, but I can't see any reason why it wouldn't.

[Noshin06]

From where will I see these files exist?

[Noshin06]

Hello Romain, Can you please tell me from where I I should check that these files are present or not? I am using version 4.10.1 right now, so should I uninstall that and start from the beginning, or just update to the new version as it is? Still, if I try to update the new version, it's creating an error, and I have downloaded the main source from the link you have shared. Regards, Noshin tasnim tuli

…

On Fri, Oct 24, 2025 at 9:14 AM Romain Quey ***@***.***> wrote: Any of the methods listed in https://neper.info/downloads.html#latest-version should work. Make sure that the file ./net_tess/net_tess_opt/net_tess_opt_comp/net_tess_opt_comp_objective/net_tess_opt_comp_objective_fval/net_tess_opt_comp_objective_fval_gen/net_tess_opt_comp_objective_fval_gen_stat/net_tess_opt_comp_objective_fval_gen_stat1.c exists, but I can't see any reason why it wouldn't. — Reply to this email directly, view it on GitHub <#1032 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/BSZBGI45ERETEYX2M37FX7D3ZIX3RAVCNFSM6AAAAACKC4Y4VWVHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTINZXGM3DQNY> . You are receiving this because you authored the thread.Message ID: ***@***.***>

[rquey]

Run this:

mkdir neper-download
cd neper-download
wget https://github.com/neperfepx/neper/archive/refs/heads/main.zip 2> wget.txt
unzip main.zip > unzip.txt

and attach the result files (wget.txt and unzip.txt only).

What is your cmake version?

cmake --version

[Noshin06]

Hello Romain,
Thank you so much for your kind help. I have successfully installed the latest version of Neper.

I have only one question: for the image that is being produced right now from the Neper mesh file (prac.png).
I have also attached the figure as a reference. Is there a feature in Neper that allows me to reverse the (prac.png) image? I mean, I feel that the image that is generated from the tesr file is correct, but it's in the inverted position, so I want to make it in the correct position. I have attached the reference picture here that I generated from tesr file using Python. It would be kind enough if you could suggest to me what to do to solve this problem.

[rquey]

I'll reply here, although it's not related to the original discussion.

It's because the y axis of EBSD maps points downwards, while Neper plot 2D tessellations with y pointing upwards.
You'll need to invert the vertical direction using -camerasky 0:-1:0, and also invert the z camera position using -cameracoo x:y:<z_pos>, where <z_pos> is a negative position.

Here is an example:

neper -T -n 10 -dim 2
neper -V n10-id1.tess -print img1
neper -V n10-id1.tess -cameracoo x:y:-5.333333 -camerasky 0:-1:0 -print img2

[Noshin06]

Hello Romain, Since I am using your recommended command, that is (neper -M file.tesr -elt hex -rcl 0.5), here we are directly converting tesr to mesh, so in this case, I want the file to be directly inverse the image to create upside down, what will be the updated command in Neper? I have attached the tesr file so I want to make it inverse and then I want to create mesh on it. Regards, Noshin Tasnim Tuli

…

On Tue, Oct 28, 2025 at 10:15 AM Romain Quey ***@***.***> wrote: I'll reply here, although it's not related to the original discussion. It's because the y axis of EBSD maps points downwards, while Neper plot 2D tessellations with y pointing upwards. You'll need to invert the vertical direction using -camerasky 0:-1:0, and also invert the z camera position using -cameracoo x:y:<z_pos>, where <z_pos> is a negative position. Here is an example: neper -T -n 10 -dim 2 neper -V n10-id1.tess -print img1 neper -V n10-id1.tess -cameracoo x:y:-5.333333 -camerasky 0:-1:0 -print img2 img.png (view on web) <https://github.com/user-attachments/assets/e8838308-5116-4afa-adf0-478ccac8eab5> — Reply to this email directly, view it on GitHub <#1032 (reply in thread)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/BSZBGI7FOVG6IQPY2Q3BKIL3Z6B7NAVCNFSM6AAAAACKC4Y4VWVHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTIOBQGU2DKOI> . You are receiving this because you authored the thread.Message ID: ***@***.***>

[rquey]

This was an example with a tess file, but the same options work with a tesr or a mesh. You'll have to learn how to use Neper ;)

[Noshin06]

I have used this command perfectly as per your suggestion and created the PNG file, which I have attached here. However, if I want to see the original mesh file using the command gmsh mesh_ud.mesh then it creates the earlier one that is without upside-down formation, which I do not want because I want the mesh file to be upside down. ***@***.***:/mnt/c/Ubantu_app_software/practise14$ neper -V mesh_ud.msh -cameracoo x:y:-5.333333 -camerasky 0:-1:0 -print mesh ======================== N e p e r ======================= Info : A software package for polycrystal generation and meshing. Info : Version 4.10.2-22 Info : Built with: gsl|muparser|opengjk|openmp|nlopt|libscotch (full) Info : Running on 8 threads. Info : <https://neper.info> Info : Copyright (C) 2003-2024, and GNU GPL'd, by Romain Quey. Info : No initialization file found (`/home/noshin/.neperrc'). Info : --------------------------------------------------------------- Info : MODULE -V loaded with arguments: Info : [ini file] (none) Info : [com line] mesh_ud.msh -cameracoo x:y:-5.333333 -camerasky 0:-1:0 -print mesh Info : --------------------------------------------------------------- Info : - Reading arguments... Info : Loading mesh... Info : [i] Parsing file `mesh_ud.msh'... Info : [i] Parsed file `mesh_ud.msh'. Info : Printing image... Info : - Printing mesh... Info : - Generating png file (1200x900 pixels)... Info : [o] Writing file `mesh.png'... Info : [o] Wrote file `mesh.png'. Info : Printing scale... Info : Elapsed time: 3.580 secs.

…

On Tue, Oct 28, 2025 at 1:58 PM Romain Quey ***@***.***> wrote: This was an example with a tess file, but the same options work with a tesr or a mesh. You'll have to learn how to use Neper ;) — Reply to this email directly, view it on GitHub <#1032 (reply in thread)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/BSZBGI35NZGRHZ2Y6ZZ3BQL3Z64DVAVCNFSM6AAAAACKC4Y4VWVHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTIOBQG4ZTQNQ> . You are receiving this because you authored the thread.Message ID: ***@***.***>