can't find already-installed libguess

[David Chmelik]

d@cosmos:~/math/src/network/leechcraft/build$ cmake ../src
[...]-- Checking for module 'libguess'
-- No package 'libguess' found
CMake Error at /usr/share/cmake-3.23/Modules/FindPkgConfig.cmake:605 (message):
A required package was not found
Call Stack (most recent call first):
/usr/share/cmake-3.23/Modules/FindPkgConfig.cmake:827 (_pkg_check_modules_internal)

plugins/lmp/CMakeLists.txt:16 (pkg_check_modules)

I installed from http://github.com/kaniini/libguess.

d@cosmos:~/math/src/network$ ls -l /usr/local/lib*/libguess*
lrwxrwxrwx 1 root root 17 Jul 25 00:54 /usr/local/lib/libguess.so -> libguess.so.1.0.0*
lrwxrwxrwx 1 root root 17 Jul 25 00:54 /usr/local/lib/libguess.so.1 -> libguess.so.1.0.0*
-rwxr-xr-x 1 root root 64456 Jul 25 00:54 /usr/local/lib/libguess.so.1.0.0*