Pangomm can't find glibmm_extra_defs but library exists and is on prefix

Hi, I’m trying to compile pangomm in Windows MSVC. Pangomm is looking for some library here:

cpp_compiler.find_library('glibmm_generate_extra_defs-vc143-2.68')

Which is present in my ${prefix}/lib directory. However, it is not being found:

src\pangomm\tools\extra_defs_gen\meson.build:7:46: ERROR: C++ shared or static library 'glibmm_generate_extra_defs-vc143-2.68-1' not found

All other libraries are being found. Any idea why this might be happening?