ld: library not found for -lboost_python3

[ruoqizzz]

When I get into the final step pip3 install -e $ROBOSCHOOL_PATH

Faults:

gcc -shared -o../cpp_household.so .build-release/physics-bullet.o .build-release/assets-mesh.o .build-release/random-world-tools.o .build-release/render-glwidget.o .build-release/render-hud.o .build-release/render-simple.o .build-release/render-simple-primitives.o .build-release/python-binding.o -framework OpenGL -lstdc++ `pkg-config --libs Qt5OpenGL Qt5Widgets assimp python-3.6`  -Lbullet_local_install/lib -lLinearMath -lBullet3Common -lBulletCollision -lBulletDynamics -lBulletInverseDynamics -lPhysicsClientC_API -lboost_python3
    ld: library not found for -lboost_python3
    clang: error: linker command failed with exit code 1 (use -v to see invocation)
    make: *** [../cpp_household.so] Error 1
    cd /Users/wsgdrfz/Downloads/roboschool/roboschool/cpp-household && make clean && make -j4 dirs  ../cpp_household.so

    C++ dependencies for this project are:

    bullet
    tinyxml
    boost_python
    assimp
    Qt5

    If you see compilation error FIRST THING TO CHECK if pkg-config call was successful.
    Install dependencies that pkg-config cannot find.

I think it might because the formal operation: brew reinstall boost-python --without-python --with-python3 --build-from-source I got the warning:

Warning: boost-python: this formula has no --with-python3 option so it will be ignored!
Warning: boost-python: this formula has no --without-python option so it will be ignored!

[ruoqizzz]

Okay, I found the solution.

Just use: brew reinstall boost-python3 --with-python --build-from-source

[juliayukam]

I am running into the same problem as posted above. ( I am trying to compile caffe)

I tried the posted method by OP of using brew reinstall boost-python3 --with-python --build-from-source

and after a successful reinstall, I am still getting the error message: ld: library not found for -lboost_python3 clang: error: linker command failed with exit code 1 (use -v to see invocation) make: *** [../cpp_household.so] Error 1

How can I find -lboost_python3 file and specify the path to the makefile? (Or... what is an alternative?) Thank you

[hammadullah125]

I'm having the same exact problem. Unable to install the boost-python. Any solutions???

[Likho]

@wsgdrfz solution worked for me, thank you!!

[GoingMyWay]

@juliayukam @hammadullah125

I installed boost.python on MacOS with brew install boost-python --with-python3 and I got the same error when compiling my code.

ld: library not found for -lboost_python3
clang: error: linker command failed with exit code 1 (use -v to see invocation)

And I found I installed the boost-python in

/usr/local/Cellar/boost-python3/1.67.0_1/lib

in this directory, I got

libboost_numpy37-mt.a      libboost_numpy37.a         libboost_python37-mt.dylib libboost_python37.dylib
libboost_numpy37-mt.dylib  libboost_numpy37.dylib     libboost_python37-mt.a     libboost_python37.a

And you can make a soft link by

sudo ln -s libboost_python37.dylib libboost_python3.dylib

So that you can get libboost_python3.dylib and this issue is fixed. Hope it will help you fix this issue. You can check this link https://stackoverflow.com/a/51906180/5046896.