Re: [Boost-users] Cobalt link error

No Cobalt library was built by b2. Em sáb., 23 de dez. de 2023 às 18:45, Richard Hodges via Boost-users escreveu:

Don’t you need to actually link the library?

Richard Hodges hodges.r@gmail.com

On Sat, 23 Dec 2023 at 22:17, Josué Andrade Gomes via Boost-users wrote:

...

Same error when building manually:

$ g++ -I~/.local/include -L~/.local/lib -o sample ../sample4.cpp -std=c++20 -fcoroutines -lboost_system /usr/bin/ld: /tmp/ccr6j1MG.o: in function `co_main(co_main(int, char**)::_Z7co_mainiPPc.Frame*) [clone .actor]': sample4.cpp:(.text+0x2a9): undefined reference to `boost::cobalt::detail::main_promise::final_suspend()' /usr/bin/ld: /tmp/ccr6j1MG.o: in function `main::reset_res::operator()(std::pmr::memory_resource*)': sample4.cpp:(.text._ZZ4mainEN9reset_resclEPNSt3pmr15memory_resourceE[_ZZ4mainEN9reset_resclEPNSt3pmr15memory_resourceE]+0x1c): undefined reference to `boost::cobalt::this_thread::set_default_resource(std::pmr::memory_resource*)' /usr/bin/ld: /tmp/ccr6j1MG.o: in function `main': sample4.cpp:(.text.main[main]+0x5b): undefined reference to `boost::cobalt::this_thread::set_default_resource(std::pmr::memory_resource*)' /usr/bin/ld: sample4.cpp:(.text.main[main]+0xc2): undefined reference to `boost::cobalt::detail::main_promise::run_main(boost::cobalt::main)' /usr/bin/ld: /tmp/ccr6j1MG.o: in function `bool boost::cobalt::detail::promise_receiver<void>::awaitable::await_suspendboost::cobalt::detail::fork::promise_type(std::__n4861::coroutine_handleboost::cobalt::detail::fork::promise_type)': sample4.cpp:(.text._ZN5boost6cobalt6detail16promise_receiverIvE9awaitable13await_suspendINS1_4fork12promise_typeEEEbNSt7__n486116coroutine_handleIT_EE[_ZN5boost6cobalt6detail16promise_receiverIvE9awaitable13await_suspendINS1_4fork12promise_typeEEEbNSt7__n486116coroutine_handleIT_EE]+0x7f): undefined reference to `boost::cobalt::detail::already_awaited()' /usr/bin/ld: /tmp/ccr6j1MG.o: in function `boost::cobalt::detail::promise_receiver<void>::awaitable::interrupt_await() &': sample4.cpp:(.text._ZNR5boost6cobalt6detail16promise_receiverIvE9awaitable15interrupt_awaitEv[_ZNR5boost6cobalt6detail16promise_receiverIvE9awaitable15interrupt_awaitEv]+0x33): undefined reference to `boost::cobalt::detail::detached_exception()' collect2: error: ld returned 1 exit status

Em sáb., 23 de dez. de 2023 às 05:22, accelerator0099 via Boost-users escreveu:

...

CMake doesn't support cobalt (even the latest cmake 3.28.1 doesn't support it).

On 12/21/23 22:29, Josué Andrade Gomes via Boost-users wrote:

...

cmake_minimum_required(VERSION 3.20) project(coro_study)

set(CMAKE_EXPORT_COMPILE_COMMANDS ON) set(CMAKE_CXX_STANDARD 20) set(CMAKE_VERBOSE_MAKEFILE ON)

set(Boost_VERBOSE 1) set(Boost_DEBUG 1)

find_package(Boost REQUIRED COMPONENTS system)

add_executable(sample sample.cpp)

target_include_directories(sample4 PRIVATE ${Boost_INCLUDE_DIRS}) target_link_libraries(sample4 PRIVATE ${Boost_LIBRARIES})

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