missing lib boost_numpy312-vc143-mt-x64-1_85.lib

[f0451]

error LNK1104: cannot open file boost_numpy312-vc143-mt-x64-1_85.lib
When installing boost with boostrap + b2, this library was not created anywhere. Also when installing via NuGet this library is not installed.
I installed numpy using pip install numpy.

[f0451]

upd. I installed this one. hopefully it'll help someone.

1. dowload boostand install in convenient folder for you. For example C:\boost_1_85_0.

2. install msys and execute the following commands in msys terminal:

pacman -S mingw-w64-ucrt-x86_64-gcc
pacman -S mingw-w64-ucrt-x86_64-gdb

3. open cmd in the C:\boost_1_85_0 folder and run the command:

bootstrap.bat gcc

I don't know why, but if you run this file through vc143 or any other msvc version, the following steps will not create the necessary libraries.
4. install python, numpy and Visual Studio

pip install numpy=1.26.0

5. create user-config.jam in one of the following folders:

'C:\Users\user'
'C:\boost_1_85_0\tools\build\src\build' 'C:\boost_1_85_0\tools\build\src\contrib' 'C:\boost_1_85_0\tools\build\src\engine' 'C:\boost_1_85_0\tools\build\src\options' 'C:\boost_1_85_0\tools\build\src\tools' 'C:\boost_1_85_0\tools\build\src\util' 

put the path to your python in this file

using python 
   : 3.12
   : C:\\Users\\user\\AppData\\Local\\Programs\\Python\\Python312\\python.exe
   : C:\\Users\\user\\AppData\\Local\\Programs\\Python\\Python312\\include 
   : C:\\Users\\user\\AppData\\Local\\Programs\\Python\\Python312\\libs    
   ;

6. after after all that work, execute from boost folder in cmd the following command:

b2 --with-python --prefix=C:\\boost_build --debug-configuration -d0 --threading=multi --toolset=msvc-14.3 --build-type=complete install -j4

--with-python -- only boost.python install. Remove it if you need the whole set
--prefix -- destination folder where the include and lib folders will be installed
--debug-configuration -d0 -- useful commands for tracking progress
--threading=multi -j4 -- increases execution speed by utilizing 4 processor cores
--toolset=msvc-14.3 -- compiler choice. For some reason, if you use the gcc compiler, .a libraries will be created and nothing worked with them.
--build-type=complete -- the most important flag. it's the one that sets the .dll files

7. If you have done everything correctly, you should see the following in the terminal:

 -- default adress-model: 64-bit
 -- default architecture: x86

Other manuals populate these fields either automatically or by using flags when setting b2. But if you ran bootstrap.bat with msvc, none of these methods will work
8. Then everyone connects libraries differently, let me give you an example of how I did it.
in visual studio project open project properties->C/C++->General-> Additional Include Directories. Add paths there:

C:\Users\user\AppData\Local\Programs\Python\Python312\include
C:\boost_build\include\boost_1_85_0

project properties->General-> Configuration Type

.dll

project properties->Advanced-> Target file extension

.pyd

project properties->Linker->General-> Additional Library Directories

C:\boost_build\lib
C:\Users\user\AppData\Local\Programs\Python\Python312\libs

project properties->Linker->Input-> Additional dependencies

python312.lib

9. Place the boost_python312-vc143-mt-x64-1_85.dll and boost_numpy312-vc143-mt-x64-1_85 files in the Release output folder from C:\boost_build\lib