Tag Archives: boost

Investigating cobalt::generator

Standard C++ generator

The code below demonstrates how standard C++23 synchronous generator works:

#include <boost/cobalt.hpp>
#include <iostream>
#include <generator>

namespace cobalt = boost::cobalt;

std::generator<int> numbers()
{
    for (int i = 1; i <= 5; ++i)
    {
        co_yield i;
    }
}
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Building boost::cobalt with MSVC 2022

cd C:\dev\repos\boost_1_89_0

set OPENSSL_ROOT_DIR=C:/dev/libs/OpenSSL
set OPENSSL_USE_STATIC_LIBS=ON
 
bootstrap.bat

b2 cxxstd=20 install --with-system --with-thread --with-cobalt --prefix=C:/dev/libs/boost_1_89_0 --toolset=msvc-14.3 -s _WIN32_WINNT=0x0A00 link=static runtime-link=static variant=release address-model=64
b2 cxxstd=20 install --with-system --with-thread --with-cobalt --prefix=C:/dev/libs/boost_1_89_0 --toolset=msvc-14.3 -s _WIN32_WINNT=0x0A00 link=static runtime-link=static variant=debug address-model=64
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An error occurred when accepting connection in the local socket. Code: 24

Tried the following

sysctl net.core.somaxconn
net.core.somaxconn = 4096
sudo sysctl -w net.core.somaxconn=8192

but without a success.

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Building BOOST with MSVC2022

I built BOOST with MSVC2022 in a similar way I built it with MSVC2017 except that I did install, but not stage:

cd C:\dev\repos\boost_1_80_0

set OPENSSL_ROOT_DIR=C:/dev/libs/OpenSSL
set OPENSSL_USE_STATIC_LIBS=ON

bootstrap.bat

b2 install --prefix=C:/dev/libs/boost_1_80_0 --toolset=msvc-14.3 link=static runtime-link=static variant=release address-model=64
b2 install --prefix=C:/dev/libs/boost_1_80_0 --toolset=msvc-14.3 link=static runtime-link=static variant=debug address-model=64

I am not sure if OPENSSL_ROOT_DIR takse an effect because boost::asio is header-only (but it depends on system and thread modules).

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How to compile BOOST with MS Visual Studio 2010-2017

Fortunately, to compile BOOST with MS VC 2010 we need Visual Studio Command Prompt and five commands:

Navigate to BOOST directory, for example:

F:
cd F:\Projects\Lib\boost_1_53_0

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