Chrono Modal module build

[Zero]

During the build of the Chrono Modal module, errors occurred.  Based on these errors, I downloaded, built, compiled, and installed the Spectra library.  However, even after setting Spectra_DIR and other related configurations to the correct paths, the following errors still appear.  According to the prompts, the Spectra library I downloaded does not contain the file KrylovSchurGEigsSolver.h.  The download link I used is https://github.com/yixuan/spectra/releases


Has anyone encountered the same build issue? Thank you all.

[Dario Mangoni]

Hi, the documentation is quite clear: we require the develop branch of Spectra. There is also a link to such branch.
Did you take the chance to read the page? https://api.projectchrono.org/development/module_modal_installation.html