Issues about installing PCL in my computer

Question

When I try to install python-pcl(PCL is the point cloud library for presentation like laser radar data. I followed the instruction on https://github.com/strawlab/python-pcl ,and

Answer 1

This is a special issue with current MacOS-installations. You could tweak setup.py and add, as the warning suggest, -std=libc++ to the compile-options, i.e.

from distutils.core import setup
from Cython.Build import cythonize

...  some stuff

#passing `-stdlib=libc++` to compiler and linker:
ext_modules = [Extension(...,
                         language='c++',
                         extra_compile_args=["-stdlib=libc++"], # + anything else you need
                         extra_link_args= ["-stdlib=libc++"] # + anything else you need]

... some more stuff

I have also added -stdlib=libc++ to the linker options, because it will be probably the next problem you will run into.

More background: In the MacOS world, for long time, there where two different implementations of c++'s standard library: -libstdc++ associated with gcc and libc++ associated with clang. At the beginning-libstdc++ was also used per default with clang-compiler. However, this is no longer the case - it is not even installed now and that is the reason why the headers cannot be found. I'm not sure why your clang-version doesn't take libc++ per default - so you have to pass it manually to compiler/linker.