`Could NOT find Boost: missing: python37`

[kldavis4]

I'm having trouble getting these to build with homebrew python3 on mojave. I have installed boost and boost-python3 and made the following changes to build.sh to tell it to use python3:

 if [[ "$OSTYPE" == "linux-gnu" || "$OSTYPE" == "linux" ]]; then
     cmake -DPYTHON_VERSION_SUFFIX=-py3 -DCMAKE_BUILD_TYPE=DEBUG .. && make && make test
 elif [[ "$OSTYPE" == "darwin"* ]]; then
-    PYTHON_VERSION=`python -c "import sys;t='{v[0]}.{v[1]}'.format(v=list(sys.version_info[:2]));sys.stdout.write(t)";`
+    PYTHON_VERSION=`python3 -c "import sys;t='{v[0]}.{v[1]}'.format(v=list(sys.version_info[:2]));sys.stdout.write(t)";`
     PYTHON_LIBRARY=/usr/local/Frameworks/Python.framework/Versions/$PYTHON_VERSION/lib/libpython$PYTHON_VERSION.dylib
     PYTHON_INCLUDE_DIR=/usr/local/Frameworks/Python.framework/Versions/$PYTHON_VERSION/Headers/
-    cmake -DPYTHON_LIBRARY=$PYTHON_LIBRARY -DPYTHON_INCLUDE_DIR=$PYTHON_INCLUDE_DIR -DCMAKE_BUILD_TYPE=DEBUG .. && make && make test
+    cmake -DPYTHON_EXECUTABLE=/usr/local/bin/python3 -DPYTHON_LIBRARY=$PYTHON_LIBRARY -DPYTHON_INCLUDE_DIR=$PYTHON_INCLUDE_DIR -DCMAKE_BUILD_TYPE=DEBUG .. && make && make test
 elif [[ "$OSTYPE" == "cygwin" ]]; then
     : # POSIX compatibility layer and Linux environment emulation for Windows
 elif [[ "$OSTYPE" == "msys" ]]; then

When I execute it I get the following:

++ basename ./build.sh
+ cd ./
+ mkdir build
mkdir: build: File exists
+ cd build
+ [[ darwin18 == \l\i\n\u\x\-\g\n\u ]]
+ [[ darwin18 == \l\i\n\u\x ]]
+ [[ darwin18 == \d\a\r\w\i\n* ]]
++ python3 -c 'import sys;t='\''{v[0]}.{v[1]}'\''.format(v=list(sys.version_info[:2]));sys.stdout.write(t)'
+ PYTHON_VERSION=3.7
+ PYTHON_LIBRARY=/usr/local/Frameworks/Python.framework/Versions/3.7/lib/libpython3.7.dylib
+ PYTHON_INCLUDE_DIR=/usr/local/Frameworks/Python.framework/Versions/3.7/Headers/
+ cmake -DPYTHON_EXECUTABLE=/usr/local/bin/python3 -DPYTHON_LIBRARY=/usr/local/Frameworks/Python.framework/Versions/3.7/lib/libpython3.7.dylib -DPYTHON_INCLUDE_DIR=/usr/local/Frameworks/Python.framework/Versions/3.7/Headers/ -DCMAKE_BUILD_TYPE=DEBUG ..
CMake Warning (dev) in CMakeLists.txt:
  No project() command is present.  The top-level CMakeLists.txt file must
  contain a literal, direct call to the project() command.  Add a line of
  code such as

    project(ProjectName)

  near the top of the file, but after cmake_minimum_required().

  CMake is pretending there is a "project(Project)" command on the first
  line.
This warning is for project developers.  Use -Wno-dev to suppress it.

-- The C compiler identification is AppleClang 10.0.1.10010046
-- The CXX compiler identification is AppleClang 10.0.1.10010046
-- Check for working C compiler: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/cc
-- Check for working C compiler: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Check for working CXX compiler: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/c++
-- Check for working CXX compiler: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Found PythonInterp: /usr/local/bin/python3 (found version "3.7.4")
-- Could NOT find Boost: missing: python37 (found /usr/local/lib/cmake/Boost-1.71.0/BoostConfig.cmake (found version "1.71.0"))
-- Found PythonInterp: /usr/local/bin/python3 (found suitable version "3.7.4", minimum required is "3")
-- Found PythonLibs: /usr/local/Frameworks/Python.framework/Versions/3.7/lib/libpython3.7.dylib (found suitable version "3.7.4", minimum required is "3")
-- PYTHON_LIBRARIES = /usr/local/Frameworks/Python.framework/Versions/3.7/lib/libpython3.7.dylib
-- PYTHON_EXECUTABLE = /usr/local/bin/python3
-- PYTHON_INCLUDE_DIRS = /usr/local/Frameworks/Python.framework/Versions/3.7/Headers
-- Boost_LIBRARIES =
-- Configuring done
-- Generating done
-- Build files have been written to: /Users/keldavis/projects/boost-python-examples/build
+ make
[  3%] Linking CXX shared module hello.so
Undefined symbols for architecture x86_64:
  "boost::python::detail::init_module(PyModuleDef&, void (*)())", referenced from:
      _PyInit_hello in hello.cpp.o
  "boost::python::detail::gcc_demangle(char const*)", referenced from:
      boost::python::type_info::name() const in hello.cpp.o
  "boost::python::detail::scope_setattr_doc(char const*, boost::python::api::object const&, char const*)", referenced from:
      void boost::python::def<char const* (*)()>(char const*, char const* (*)()) in hello.cpp.o
  "boost::python::objects::function_object(boost::python::objects::py_function const&)", referenced from:
      boost::python::api::object boost::python::detail::make_function_aux<char const* (*)(), boost::python::default_call_policies, boost::mpl::vector1<char const*> >(char const* (*)(), boost::python::default_call_policies const&, boost::mpl::vector1<char const*> const&) in hello.cpp.o
  "boost::python::objects::py_function_impl_base::~py_function_impl_base()", referenced from:
      boost::python::objects::caller_py_function_impl<boost::python::detail::caller<char const* (*)(), boost::python::default_call_policies, boost::mpl::vector1<char const*> > >::~caller_py_function_impl() in hello.cpp.o
  "boost::python::converter::do_return_to_python(char const*)", referenced from:
      boost::python::to_python_value<char const* const&>::operator()(char const* const&) const in hello.cpp.o
  "boost::python::converter::registry::query(boost::python::type_info)", referenced from:
      boost::python::converter::expected_pytype_for_arg<char const*>::get_pytype() in hello.cpp.o
  "boost::python::objects::py_function_impl_base::max_arity() const", referenced from:
      vtable for boost::python::objects::caller_py_function_impl<boost::python::detail::caller<char const* (*)(), boost::python::default_call_policies, boost::mpl::vector1<char const*> > > in hello.cpp.o
  "boost::python::converter::registration::expected_from_python_type() const", referenced from:
      boost::python::converter::expected_pytype_for_arg<char const*>::get_pytype() in hello.cpp.o
  "typeinfo for boost::python::objects::py_function_impl_base", referenced from:
      typeinfo for boost::python::objects::caller_py_function_impl<boost::python::detail::caller<char const* (*)(), boost::python::default_call_policies, boost::mpl::vector1<char const*> > > in hello.cpp.o
  "vtable for boost::python::objects::py_function_impl_base", referenced from:
      boost::python::objects::py_function_impl_base::py_function_impl_base() in hello.cpp.o
  NOTE: a missing vtable usually means the first non-inline virtual member function has no definition.
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make[2]: *** [01-HelloWorld/hello.so] Error 1
make[1]: *** [01-HelloWorld/CMakeFiles/hello.dir/all] Error 2
make: *** [all] Error 2

Trying to understand how to resolve: Could NOT find Boost: missing: python37 (found /usr/local/lib/cmake/Boost-1.71.0/BoostConfig.cmake (found version "1.71.0"))

[Achimh3011]

Seems to be a cmake problem. Even if all the documented variables are set, cmake is not able to recognize the boost installation. Everything else seems to be following from this problem.

[Achimh3011]

After looking further into it, I assume this be a problem with homebrew's packaging of boost-python:

CMake Error at /usr/local/Cellar/boost/1.71.0/lib/cmake/Boost-1.71.0/BoostConfig.cmake:117 (find_package):
  Could not find a package configuration file provided by "boost_python"
  (requested version 1.71.0) with any of the following names:

    boost_pythonConfig.cmake
    boost_python-config.cmake

Respective files are available for all other boost components (as part of the boost package), but are missing for boost-python and boost-python3. Adding them to one of the packages (and I don't know which would be the right one), should solve the problem.

[kldavis4]

@Achimh3011 thanks for looking into this - it helped a lot. I found this https://github.com/YosysHQ/nextpnr/issues/322#issuecomment-536177724 and set set(Boost_NO_BOOST_CMAKE true) and was able to get the build to succeed.

[Achimh3011]

Cool! Would you like to make a PR with the work-around for this repo?

[kldavis4]

sure thing - I will make a PR

On Fri, Oct 4, 2019 at 1:56 AM Achim Herwig notifications@github.com wrote:

Cool! Would you like to make a PR with the work-around for this repo?

— You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub https://github.com/TNG/boost-python-examples/issues/32?email_source=notifications&email_token=AAC2SC47TD3V2XWDNP3NVNTQM3LHTA5CNFSM4IVNBUVKYY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOEAKQP7Q#issuecomment-538249214, or mute the thread https://github.com/notifications/unsubscribe-auth/AAC2SC57CPIUW3LWEFJFPCDQM3LHTANCNFSM4IVNBUVA .

[marianbrunet]

Removed the requirement from the CMakeLists.txt changed to: find_package(Boost REQUIRED python)