Include path not exposed while importing to CMake project via FetchContent

[francisco-m-almeida]

While importing tinyply to a CMake project through FetchContent in such a way,

FetchContent_Declare(tinyply
		GIT_REPOSITORY  https://github.com/ddiakopoulos/tinyply.git
		GIT_TAG 2.3.4
)
FetchContent_MakeAvailable(tinyply)

The header tinyply.h is not found by the compiler, as if the source subdirectory was not added to include path.

The workaround I am currently using is adding the include path by hand thus:

target_include_directories(${MY_TARGET} PRIVATE "${tinyply_SOURCE_DIR}/source")