https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107886
--- Comment #13 from Jonathan Wakely <redi at gcc dot gnu.org> --- (In reply to Jamaika from comment #6) > I don't understand something. Why _GLIBCXX_HAS_GTHREADS works for > std::jthread but not for std::latch std::jthread doesn't depend on _GLIBCXX_HAS_GTHREADS, it's always available. But you might not be able to create a new thread using std::jthread if your platform doesn't provide what's needed for it to work. (In reply to Jamaika from comment #10) > ``` > Using built-in specs. > COLLECT_GCC=g++.exe > Target: x86_64-w64-mingw32 > Configured with: /home/ma/m/source/gcc-g/configure --host=x86_64-w64-mingw32 > --target=x86_64-w64-mingw32 --disable-nls > --enable-languages=c,c++,objc,obj-c++ --with-gmp=/home/ma/m/build/for_target > --with-mpfr=/home/ma/m/build/for_target > --with-mpc=/home/ma/m/build/for_target > --with-isl=/home/ma/m/build/for_target --enable-twoprocess > --disable-libstdcxx-pch --disable-win32-registry --disable-shared > --enable-fully-dynamic-string --enable-libssp --prefix=/home/ma/m/target > --with-sysroot=/home/ma/m/target > Thread model: win32 This is the problem. You need a thread model that provides the support needed for C++.
