Dev vcpkg

[iAnyKey]

Summary

• Added a vcpkg support for external dependencies (BLAS and LAPACK), which makes mexing possible on a regular unprepaired system without taking care on installing or building dependencies manually. It would be also possible to fetch LIBIGL over vcpkg as soon as it will be updated to 2.4.0 there (s. https://github.com/microsoft/vcpkg/pull/26029).
• Vcpkg itself will be pulled over git in order to keep the build process self-contained.
• updated ./mex/README.MD

Testing

Windows 11 x64

git clone https://github.com/iAnyKey/gptoolbox gpt_lnx -b dev_vcpkg
cd mex
mkdir build && cd build
cmake ..
cmake --build . --config Release

Ubuntu Ubuntu 22.04.1 LTS

Tested on a WSL without installed Matlab, thus enabled matlab proxy for testing.

git clone https://github.com/iAnyKey/gptoolbox gpt_lnx -b dev_vcpkg
cd mex
mkdir build && cd build
cmake .. -DMATLAB_PROXY=ON
make

[nkh0472]

Problem encountered: cannot find /export:mexFunction: No such file or directory This commit doesn't help.

See full log in: https://github.com/alecjacobson/gptoolbox/issues/150#issuecomment-2026488054

[iAnyKey]

Problem encountered: cannot find /export:mexFunction: No such file or directory This commit doesn't help.

See full log in: #150 (comment)

I never tried to build it with mingw. This version worked well with msvc back then and I was able to build it under windows. Easy way: use msvc instead of mingw. You may have noticed, for whatever reason @alecjacobson didn't merge this PR since about a year and thus I gave up contributing.

[alecjacobson]

oops. probably just never saw it/forgot. thanks for contributing @iAnyKey

[nkh0472]

Problem encountered: cannot find /export:mexFunction: No such file or directory This commit doesn't help. See full log in: #150 (comment)

I never tried to build it with mingw. This version worked well with msvc back then and I was able to build it under windows. Easy way: use msvc instead of mingw. You may have noticed, for whatever reason @alecjacobson didn't merge this PR since about a year and thus I gave up contributing.

Indeed, MSVC works well. I recently installed Visual Studio 2022 along with MSVC v143 toolchain and the Windows 11 SDK (version 10.0.22621.0).

First time, I mkdir build, used cmake-gui to configure and generate, , but no 'mex' files were generated. Consequently, I attempted to compile by executing cmake --build . --config Release within the 'build' directory. However, the compilation failed after generating approximately 10+ 'mexw64' files, and rerunning the command proved impossible.

For the second attempt, I opted to clean the folder (delete .exp .lib *.mexw64 \build \external). Following exactly the same commands as in the PR above:

mkdir build && cd build
cmake ..
cmake --build . --config Release

This time, the compilation completed successfully!

Thank you for your assistance in navigating this process.