When compiling pcl with vcpkg, and using #include <pcl/io/ply_io.h>, there occures a linker error which happens because
libpcl_io_ply.a is not added to ${PCL_LIBRARIES}, nor is it linked to libpcl_io.a

Please paste the compilation results/errors.

To Reproduce

• Build pcl with the latest vcpkg port.
• Add pcl to a personal target in cmake by following the instructions here: https://pointclouds.org/documentation/tutorials/using_pcl_pcl_config.html
• Run:

mkdir build && cd build
cmake ..  
make foobar VERBOSE=1 2>&1 | grep pcl_io

Output:
lib_pcl_io_ply is not printed in the output.
"<vcpkg_dirdir>/installed/x64-linux/lib/libpcl_io.a(ply_io.cpp.o): In function `pcl::PLYReader::parse(std::__cxx11::basic_string<char, std::char_traits, std::allocator > const&)'" complains about not being able to link to lib_pcl_io_ply.

Remember to reproduce the error in a clean rebuild (removing all build objects and starting build from scratch)

Your Environment (please complete the following information):

• OS: Ubuntu 18.04 docker
• Compiler: gcc 9
• PCL Version 1.11.0
• PCL Type: Compiled with vcpkg

If PCL was compiled from source or failure in compiling PCL itself:

• GPU, Kinfu, CUDA enabled? No
• List and Version of dependencies used - deemed irrelevant
• Compilation flags are used -O3 -fPIC, nothing else special.

If compiling against PCL:

• Checked CMakeLists.txt for simple errors like missing find_package or target_link_libraries? - yes

• CMakeLists.txt for PCL >= 1.9
• CMakeLists.txt for older versions

Possible Solution

It seems that pcl_io is not linked to pcl_io_ply when building pcl statically, hence it needs pcl_io_ply when linked to, but there is no nice way to obtain the location of pcl_io_ply, because it is not available in the libraries cmake variable.

So my naive proposal would be: either make pcl_io with pcl_io_ply or add it to the libraries variable.