[feature] CMakeToolchain: prepend CMAKE_CURRENT_LIST_DIR instead of CMAKE_BINARY_DIR

• I’ve read the CONTRIBUTING guide.

Currently, toolchain file generated by CMakeToolchain sets CMAKE_MODULE_PATH and CMAKE_PREFIX_PATH like this:

    # To support the cmake_find_package generators
    set(CMAKE_MODULE_PATH ${CMAKE_BINARY_DIR} ${CMAKE_MODULE_PATH})
    set(CMAKE_PREFIX_PATH ${CMAKE_BINARY_DIR} ${CMAKE_PREFIX_PATH})

It would be more robust to prepend CMAKE_CURRENT_LIST_DIR since conan install could be called from an other directory than root build tree. Usually I call conan install in a subfolder (I like to call it conan_generators) to isolate specific conan generated build files from standard build artifacts. I can live with this behavior, I inject absolute path of this subfolder (or any folder on my system where Ive called conan install) into CMAKE_MODULE_PATH & CMAKE_PREFIX_PATH through cmake command line, but it would be nice if toolchain file was more robust.

[SpaceIm]

AFAIK, CMAKE_CURRENT_LIST_DIR doesn’t refer to any CMakeLists.txt folder, but to the local folder where the cmake file referencing this variable lives. Since toolchain files is generated in the same folder than others conan generated file, it’s exactly the folder you want to append in CMAKE_MODULE_PATH & CMAKE_PREFIX_PATH.

[memsharded]

Merged https://github.com/conan-io/conan/pull/8810, will be released next 1.36