Here's my CMakeLists.txt : >>>>>>>
cmake_minimum_required(VERSION 3.8 FATAL_ERROR) project(oscour) set(CMAKE_INCLUDE_CURRENT_DIR ON) set(CMAKE_CXX_FLAGS "-fconcepts -fsanitize=address -fsanitize=undefined") set(CMAKE_EXE_LINKER_FLAGS "-fconcepts -fsanitize=address -fsanitize=undefined") add_subdirectory(uWebSockets) find_package(Threads REQUIRED) add_library(oscour INTERFACE) target_sources(oscour INTERFACE ${CMAKE_CURRENT_SOURCE_DIR}/oscour/oscour.hpp) target_include_directories(oscour INTERFACE oscour/) target_link_libraries(oscour INTERFACE uWS Threads::Threads) target_compile_options(oscour INTERFACE -std=c++17) add_executable(udp examples/udp.cpp) target_link_libraries(udp PRIVATE oscour) add_executable(tcp examples/tcp.cpp) target_link_libraries(tcp PRIVATE oscour) <<<<<<<< As you can see, I call find_package(Threads REQUIRED) but at no point my example executables, named udp and tcp, link to -pthread (or -lpthread) (which of course makes my build fails). I also tried to link them explicitely to Threads::Threads. This did not work either. e.g. when doing make in verbose mode, the link invocation is : /usr/bin/g++ -fconcepts -fsanitize=address -fsanitize=undefined -std=c++17 -fconcepts -fsanitize=address -fsanitize=undefined CMakeFiles/complete.dir/examples/udp.cpp.o -o udp uWebSockets/libuWS.a /usr/lib/libssl.so /usr/lib/libcrypto.so /usr/lib/libz.so there is no hint of pthreads in there... what can I do ? Best Jean-Michaël Celerier http://www.jcelerier.name
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