[  2%] Building CXX object examples/forward/CMakeFiles/example-forward-jacobian-derivatives-using-eigen-with-parameters.dir/example-forward-jacobian-derivatives-using-eigen-with-parameters.cpp.o
In file included from /home/victor/Développement/autodiff/autodiff/examples/forward/example-forward-jacobian-derivatives-using-eigen-with-parameters.cpp:10:
In file included from /home/victor/Développement/autodiff/autodiff/autodiff/forward.hpp:33:
/home/victor/Développement/autodiff/autodiff/autodiff/forward/forward.hpp:560:8: error: expected '(' after 'if'
    if constexpr (isDual<T>)
       ^
/home/victor/Développement/autodiff/autodiff/autodiff/forward/forward.hpp:562:5: error: expected expression
    else if constexpr (isExpr<T>)
    ^
/home/victor/Développement/autodiff/autodiff/autodiff/forward/forward.hpp:564:5: error: expected expression
    else return std::forward<T>(expr);
    ^
/home/victor/Développement/autodiff/autodiff/autodiff/forward/forward.hpp:570:8: error: expected '(' after 'if'
    if constexpr (isDual<T>)
       ^
/home/victor/Développement/autodiff/autodiff/autodiff/forward/forward.hpp:572:5: error: expected expression
    else if constexpr (isExpr<T>)
    ^
/home/victor/Développement/autodiff/autodiff/autodiff/forward/forward.hpp:574:5: error: expected expression
    else return std::forward<T>(expr);
    ^
/home/victor/Développement/autodiff/autodiff/autodiff/forward/forward.hpp:606:10: error: no member named 'apply' in namespace 'std'
    std::apply(internal::seed<1, Args&...>, duals);
    ~~~~~^
/home/victor/Développement/autodiff/autodiff/autodiff/forward/forward.hpp:619:10: error: no member named 'apply' in namespace 'std'
    std::apply(internal::seed<0, Args&...>, duals);
    ~~~~~^
/home/victor/Développement/autodiff/autodiff/autodiff/forward/forward.hpp:637:8: error: expected '(' after 'if'
    if constexpr (order == 0)
       ^
/home/victor/Développement/autodiff/autodiff/autodiff/forward/forward.hpp:639:8: error: expected '(' after 'if'
    if constexpr (order == 1)
       ^
/home/victor/Développement/autodiff/autodiff/autodiff/forward/forward.hpp:641:5: error: expected expression
    else
    ^
/home/victor/Développement/autodiff/autodiff/autodiff/forward/forward.hpp:649:14: error: no member named 'apply' in namespace 'std'
    u = std::apply(f, args);
        ~~~~~^
/home/victor/Développement/autodiff/autodiff/autodiff/forward/forward.hpp:657:34: error: no member named 'apply' in namespace 'std'
    using Result = decltype(std::apply(f, args));
                            ~~~~~^
/home/victor/Développement/autodiff/autodiff/autodiff/forward/forward.hpp:658:5: error: unknown type name 'Result'
    Result u;
    ^
/home/victor/Développement/autodiff/autodiff/autodiff/forward/forward.hpp:697:8: error: expected '(' after 'if'
    if constexpr (isNegExpr<U>)
       ^
/home/victor/Développement/autodiff/autodiff/autodiff/forward/forward.hpp:699:5: error: expected expression
    else return NegExpr<U>{ std::forward<U>(expr) };
    ^
/home/victor/Développement/autodiff/autodiff/autodiff/forward/forward.hpp:709:8: error: expected '(' after 'if'
    if constexpr (isInvExpr<U>)
       ^
/home/victor/Développement/autodiff/autodiff/autodiff/forward/forward.hpp:711:5: error: expected expression
    else return InvExpr<U>{ std::forward<U>(expr) };
    ^
/home/victor/Développement/autodiff/autodiff/autodiff/forward/forward.hpp:748:8: error: expected '(' after 'if'
    if constexpr (isNegExpr<R>)
       ^
fatal error: too many errors emitted, stopping now [-ferror-limit=]
20 errors generated.
examples/forward/CMakeFiles/example-forward-jacobian-derivatives-using-eigen-with-parameters.dir/build.make:62 : la recette pour la cible « examples/forward/CMakeFiles/example-forward-jacobian-derivatives-using-eigen-with-parameters.dir/example-forward-jacobian-derivatives-using-eigen-with-parameters.cpp.o » a échouée
make[2]: *** [examples/forward/CMakeFiles/example-forward-jacobian-derivatives-using-eigen-with-parameters.dir/example-forward-jacobian-derivatives-using-eigen-with-parameters.cpp.o] Erreur 1
CMakeFiles/Makefile2:143 : la recette pour la cible « examples/forward/CMakeFiles/example-forward-jacobian-derivatives-using-eigen-with-parameters.dir/all » a échouée
make[1]: *** [examples/forward/CMakeFiles/example-forward-jacobian-derivatives-using-eigen-with-parameters.dir/all] Erreur 2
Makefile:129 : la recette pour la cible « all » a échouée
make: *** [all] Erreur 2