Changing the BOOST_URL leads to linking error about boost-cmake

[Weiming-Hu]

I'm not sure whether this helps. I looked inside the boost-cmake build folder to see what are available. I found the following. AnalogEnsemble is my github project.

$ pwd
/Users/wuh20/github/AnalogsEnsemble/build/build/boost-cmake
$ ls
CMakeFiles                 Makefile                   libboost_date_time.a       libboost_filesystem.a      libboost_program_options.a libboost_serialization.a

Thank you

[Weiming-Hu]

My development environment is as follows:

• OS: Mac OS Mojave Version 10.14.6
• Model: MacBook Air (13-inch, Early 2015)
• CMake version: 3.15.5
• Compiler: Apple clang version 11.0.0 (clang-1100.0.33.17)

[Weiming-Hu]

I just tried a different version https://cfhcable.dl.sourceforge.net/project/boost/boost/1.70.0/boost_1_70_0.tar.bz2 with 430ae8354789de4fd19ee52f3b1f739e1fba576f0aded0897c3c2bc00fb38778.

The error is different. I guess it might be a version problem.

Undefined symbols for architecture x86_64:
  "boost::filesystem::detail::directory_iterator_construct(boost::filesystem::directory_iterator&, boost::filesystem::path const&, unsigned int, boost::system::error_code*)", referenced from:
      boost::filesystem::directory_iterator::directory_iterator(boost::filesystem::path const&, boost::filesystem::directory_options) in libAnEnIO.a(FunctionsIO.cpp.o)
  "boost::filesystem::directory_entry::get_status(boost::system::error_code*) const", referenced from:
      boost::filesystem::directory_entry::status() const in libAnEnIO.a(FunctionsIO.cpp.o)
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)