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My system package manager dnf (Im using fedora Linux) doesn't have an imgui package or an assimp package so I decided to use vcpkg for installing imgui and assimp.

The problem I think is that find_package doesn't work for packages installed with vcpkg because the vcpkg directory is in my home directory and I guess cmake has no way of knowing that imgui was installed in my home directory.

This is the error I get when trying to build with cmake:

$ cmake -DCMAKE_BUILD_TYPE=Debug -S .. -B . -- Submodule update CMake Error at CMakeLists.txt:40 (find_package): Could not find a package configuration file provided by "imgui" with any of the following names: imguiConfig.cmake imgui-config.cmake Add the installation prefix of "imgui" to CMAKE_PREFIX_PATH or set "imgui_DIR" to a directory containing one of the above files. If "imgui" provides a separate development package or SDK, be sure it has been installed. -- Configuring incomplete, errors occurred!

So how do I make vcpkg install imgui or any package in a system wide place like dnf does where cmake can find it?

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  • Wouldn’t it be simpler to set imgui_DIR? Commented Jan 10, 2024 at 13:55

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I've decided to move the vcpkg directory into my project folder and to set CMAKE_PREFIX_PATH to the vcpkg directory. This way my project is self contained and I don't need to hard code the path to vcpkg to some location in my home directory.

I added this to my cmake:

set(CMAKE_PREFIX_PATH "${CMAKE_CURRENT_SOURCE_DIR}/vcpkg/installed/x64-linux")

But I think the vcpkg imgui package is bugged because there are no imgui_impl_* files in the imgui installation of vcpkg so I've added imgui as a submodule instead.

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