Latest version (9463670), build on Linux (Fedora 37), and installed with 'make install/local'.

When I then build my code which uses Jinja2cpp, i got an error:

/usr/local/include/jinja2cpp/generic_list.h:4:10: fatal error: jinja2cpp/utils/i_comparable.h: No such file or directory

Indeed, all the headers from the include/jinja2cpp subdirs are installed into /usr/local/include/jinja2cpp (without copying the subdir hierarchy).

I do not have enough knowledge of CMake to propose a patch, sorry, but it comes from the definition of PUBLIC_HEADER in the main CMakeLists.txt

Thanks for your work !