Not finding libturbojpeg but it is installed

[HemiBob]

I'm following the instructions and my system is showing as not found.

bob@3040-i5:/Downloads/glrpt-2.6.1/build$ sudo cmake -DCMAKE_INSTALL_PREFIX=/usr ..
gmodule
-- Checking for module 'libturbojpeg'
-- No package 'libturbojpeg' found
CMake Error at /usr/share/cmake-3.22/Modules/FindPkgConfig.cmake:603 (message):
A required package was not found
Call Stack (most recent call first):
/usr/share/cmake-3.22/Modules/FindPkgConfig.cmake:825 (_pkg_check_modules_internal)
src/CMakeLists.txt:8 (pkg_check_modules)
###########################
But when I try to install it I get:
bob@3040-i5:/Downloads/glrpt-2.6.1/build$ sudo apt install libturbojpeg
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
libturbojpeg is already the newest version (2.1.2-0ubuntu1).

What can I do to solve this please?
Operating system: Linux Ubuntu 22.04

[dvdesolve]

can you please provide full info about your libturbojpeg version and full lists of files installed by this package?