custom build for Storm, is it ok?

Start with libs/python/src/converter/builtin_converters.cpp at line 51 and the Boost.Python build output using Python 3.8. Reproduce the failed build, inspect the reported conversion error, and verify that the Boost.Python targets complete successfully without skipped or failed targets.

While Installing Storm using these steps to custom build boost (see last section)
https://www.stormchecker.org/documentation/obtain-storm/dependencies.html

I have obtained not obvious result whether the installation succeeded or not:
If not, can you suggest a fix, please? Thanks.

	$ wget https://sourceforge.net/projects/boost/files/boost/1.63.0/boost_1_63_0.tar.gz
	$ tar -xzf boost_1_63_0.tar.gz
	$ cd boost_1_63_0
	$ ./bootstrap.sh
	Building Boost.Build engine with toolset gcc... tools/build/src/engine/bin.linuxx86_64/b2
	Detecting Python version... 3.8
	Detecting Python root... /home/matej/anaconda3/envs/py38
	Unicode/ICU support for Boost.Regex?... /usr
	Backing up existing Boost.Build configuration in project-config.jam.2
	Generating Boost.Build configuration in project-config.jam...

	Bootstrapping is done. To build, run:

	    ./b2
	    
	To adjust configuration, edit 'project-config.jam'.
	Further information:

	   - Command line help:
	     ./b2 --help
	     
	   - Getting started guide: 
	     http://www.boost.org/more/getting_started/unix-variants.html
	     
	   - Boost.Build documentation:
	     http://www.boost.org/build/doc/html/index.html
	$ ./bjam
	Performing configuration checks

	    - 32-bit                   : no  (cached)
	    - 64-bit                   : yes (cached)
	    - arm                      : no  (cached)
	    - mips1                    : no  (cached)
	    - power                    : no  (cached)
	    - sparc                    : no  (cached)
	    - x86                      : yes (cached)

	Building the Boost C++ Libraries.


	    - symlinks supported       : yes (cached)
	    - C++11 mutex              : yes (cached)
	    - lockfree boost::atomic_flag : yes (cached)
	    - Boost.Config Feature Check: cxx11_auto_declarations : yes (cached)
	    - Boost.Config Feature Check: cxx11_constexpr : yes (cached)
	    - Boost.Config Feature Check: cxx11_defaulted_functions : yes (cached)
	    - Boost.Config Feature Check: cxx11_final : yes (cached)
	    - Boost.Config Feature Check: cxx11_hdr_mutex : yes (cached)
	    - Boost.Config Feature Check: cxx11_hdr_tuple : yes (cached)
	    - Boost.Config Feature Check: cxx11_lambdas : yes (cached)
	    - Boost.Config Feature Check: cxx11_noexcept : yes (cached)
	    - Boost.Config Feature Check: cxx11_nullptr : yes (cached)
	    - Boost.Config Feature Check: cxx11_rvalue_references : yes (cached)
	    - Boost.Config Feature Check: cxx11_template_aliases : yes (cached)
	    - Boost.Config Feature Check: cxx11_thread_local : yes (cached)
	    - Boost.Config Feature Check: cxx11_variadic_templates : yes (cached)
	    - has_icu builds           : yes (cached)
	warning: Graph library does not contain MPI-based parallel components.
	note: to enable them, add "using mpi ;" to your user-config.jam
	    - zlib                     : yes (cached)
	    - bzip2                    : yes (cached)
	    - iconv (libc)             : yes (cached)
	    - icu                      : yes (cached)
	    - native-atomic-int32-supported : yes (cached)
	    - native-syslog-supported  : yes (cached)
	    - pthread-supports-robust-mutexes : yes (cached)
	    - compiler-supports-visibility : yes (cached)
	    - compiler-supports-ssse3  : yes (cached)
	    - compiler-supports-avx2   : yes (cached)
	    - gcc visibility           : yes (cached)
	    - long double support      : yes (cached)
	warning: skipping optional Message Passing Interface (MPI) library.
	note: to enable MPI support, add "using mpi ;" to user-config.jam.
	note: to suppress this message, pass "--without-mpi" to bjam.
	note: otherwise, you can safely ignore this message.
	    - zlib                     : yes (cached)
	    - bzip2                    : yes (cached)

	Component configuration:

	    - atomic                   : building
	    - chrono                   : building
	    - container                : building
	    - context                  : building
	    - coroutine                : building
	    - coroutine2               : building
	    - date_time                : building
	    - exception                : building
	    - fiber                    : building
	    - filesystem               : building
	    - graph                    : building
	    - graph_parallel           : building
	    - iostreams                : building
	    - locale                   : building
	    - log                      : building
	    - math                     : building
	    - metaparse                : building
	    - mpi                      : building
	    - program_options          : building
	    - python                   : building
	    - random                   : building
	    - regex                    : building
	    - serialization            : building
	    - signals                  : building
	    - system                   : building
	    - test                     : building
	    - thread                   : building
	    - timer                    : building
	    - type_erasure             : building
	    - wave                     : building

	...patience...
	...patience...
	...patience...
	...patience...
	...patience...
	...patience...
	...found 16129 targets...
	...updating 20 targets...
	gcc.compile.c++ bin.v2/libs/python/build/gcc-7/release/link-static/threading-multi/converter/builtin_converters.o
	libs/python/src/converter/builtin_converters.cpp: In function ‘void* boost::python::converter::{anonymous}::convert_to_cstring(PyObject*)’:
	libs/python/src/converter/builtin_converters.cpp:51:35: error: invalid conversion from ‘const void*’ to ‘void*’ [-fpermissive]
	       return PyUnicode_Check(obj) ? _PyUnicode_AsString(obj) : 0;

	    "g++"  -ftemplate-depth-128 -O3 -finline-functions -Wno-inline -Wall -pthread -m64  -DBOOST_ALL_NO_LIB=1 -DBOOST_PYTHON_SOURCE -DBOOST_PYTHON_STATIC_LIB -DNDEBUG  -I"." -I"/home/matej/anaconda3/envs/py38/include/python3.8" -c -o "bin.v2/libs/python/build/gcc-7/release/link-static/threading-multi/converter/builtin_converters.o" "libs/python/src/converter/builtin_converters.cpp"

	...failed gcc.compile.c++ bin.v2/libs/python/build/gcc-7/release/link-static/threading-multi/converter/builtin_converters.o...
	...skipped <pbin.v2/libs/python/build/gcc-7/release/link-static/threading-multi>libboost_python.a(clean) for lack of <pbin.v2/libs/python/build/gcc-7/release/link-static/threading-multi>converter/builtin_converters.o...
	...skipped <pbin.v2/libs/python/build/gcc-7/release/link-static/threading-multi>libboost_python.a for lack of <pbin.v2/libs/python/build/gcc-7/release/link-static/threading-multi>converter/builtin_converters.o...
	...skipped <pstage/lib>libboost_python.a for lack of <pbin.v2/libs/python/build/gcc-7/release/link-static/threading-multi>libboost_python.a...
	...skipped <pbin.v2/libs/python/build/gcc-7/release/link-static/threading-multi>libboost_python3.a(clean) for lack of <pbin.v2/libs/python/build/gcc-7/release/link-static/threading-multi>converter/builtin_converters.o...
	...skipped <pbin.v2/libs/python/build/gcc-7/release/link-static/threading-multi>libboost_python3.a for lack of <pbin.v2/libs/python/build/gcc-7/release/link-static/threading-multi>converter/builtin_converters.o...
	...skipped <pstage/lib>libboost_python3.a for lack of <pbin.v2/libs/python/build/gcc-7/release/link-static/threading-multi>libboost_python3.a...
	gcc.compile.c++ bin.v2/libs/python/build/gcc-7/release/threading-multi/converter/builtin_converters.o
	libs/python/src/converter/builtin_converters.cpp: In function ‘void* boost::python::converter::{anonymous}::convert_to_cstring(PyObject*)’:
	libs/python/src/converter/builtin_converters.cpp:51:35: error: invalid conversion from ‘const void*’ to ‘void*’ [-fpermissive]
	       return PyUnicode_Check(obj) ? _PyUnicode_AsString(obj) : 0;

	    "g++"  -ftemplate-depth-128 -O3 -finline-functions -Wno-inline -Wall -pthread -fPIC -m64  -DBOOST_ALL_NO_LIB=1 -DBOOST_PYTHON_SOURCE -DNDEBUG  -I"." -I"/home/matej/anaconda3/envs/py38/include/python3.8" -c -o "bin.v2/libs/python/build/gcc-7/release/threading-multi/converter/builtin_converters.o" "libs/python/src/converter/builtin_converters.cpp"

	...failed gcc.compile.c++ bin.v2/libs/python/build/gcc-7/release/threading-multi/converter/builtin_converters.o...
	...skipped <pbin.v2/libs/python/build/gcc-7/release/threading-multi>libboost_python.so.1.63.0 for lack of <pbin.v2/libs/python/build/gcc-7/release/threading-multi>converter/builtin_converters.o...
	...skipped <pstage/lib>libboost_python.so.1.63.0 for lack of <pbin.v2/libs/python/build/gcc-7/release/threading-multi>libboost_python.so.1.63.0...
	...skipped <pstage/lib>libboost_python.so for lack of <pstage/lib>libboost_python.so.1.63.0...
	...skipped <pbin.v2/libs/python/build/gcc-7/release/threading-multi>libboost_numpy.so.1.63.0 for lack of <pbin.v2/libs/python/build/gcc-7/release/threading-multi>libboost_python.so.1.63.0...
	...skipped <pstage/lib>libboost_numpy.so.1.63.0 for lack of <pbin.v2/libs/python/build/gcc-7/release/threading-multi>libboost_numpy.so.1.63.0...
	...skipped <pstage/lib>libboost_numpy.so for lack of <pstage/lib>libboost_numpy.so.1.63.0...
	...skipped <pbin.v2/libs/python/build/gcc-7/release/threading-multi>libboost_python3.so.1.63.0 for lack of <pbin.v2/libs/python/build/gcc-7/release/threading-multi>converter/builtin_converters.o...
	...skipped <pstage/lib>libboost_python3.so.1.63.0 for lack of <pbin.v2/libs/python/build/gcc-7/release/threading-multi>libboost_python3.so.1.63.0...
	...skipped <pstage/lib>libboost_python3.so for lack of <pstage/lib>libboost_python3.so.1.63.0...
	...skipped <pbin.v2/libs/python/build/gcc-7/release/threading-multi>libboost_numpy3.so.1.63.0 for lack of <pbin.v2/libs/python/build/gcc-7/release/threading-multi>libboost_python.so.1.63.0...
	...skipped <pstage/lib>libboost_numpy3.so.1.63.0 for lack of <pbin.v2/libs/python/build/gcc-7/release/threading-multi>libboost_numpy3.so.1.63.0...
	...skipped <pstage/lib>libboost_numpy3.so for lack of <pstage/lib>libboost_numpy3.so.1.63.0...
	...failed updating 2 targets...
	...skipped 18 targets...