$ gem install eventmachine -v '1.2.7'

Building native extensions. This could take a while...
ERROR:  Error installing eventmachine:
	ERROR: Failed to build gem native extension.

    current directory: /Users/Goldy/.rbenv/versions/2.5.5/lib/ruby/gems/2.5.0/gems/eventmachine-1.2.7/ext
/Users/Goldy/.rbenv/versions/2.5.5/bin/ruby -I /Users/Goldy/.rbenv/versions/2.5.5/lib/ruby/site_ruby/2.5.0 -r ./siteconf20220204-75650-1z06u3r.rb extconf.rb
checking for -lcrypto... yes
checking for -lssl... yes
checking for openssl/ssl.h... yes
checking for openssl/err.h... yes
checking for rb_trap_immediate in ruby.h,rubysig.h... no
checking for rb_thread_blocking_region()... no
checking for rb_thread_call_without_gvl() in ruby/thread.h... no
checking for rb_thread_fd_select()... no
checking for rb_fdset_t in ruby/intern.h... yes
checking for rb_wait_for_single_fd()... no
checking for rb_enable_interrupt()... no
checking for rb_time_new()... no
checking for inotify_init() in sys/inotify.h... no
checking for __NR_inotify_init in sys/syscall.h... no
checking for writev() in sys/uio.h... yes
checking for pipe2() in unistd.h... no
checking for accept4() in sys/socket.h... no
checking for SOCK_CLOEXEC in sys/socket.h... no
checking for sys/event.h... yes
checking for sys/queue.h... yes
checking for clock_gettime()... yes
checking for CLOCK_MONOTONIC_RAW in time.h... yes
checking for CLOCK_MONOTONIC in time.h... yes
CXXFLAGS=$(cxxflags) -Wall -Wextra -Wno-deprecated-declarations -Wno-ignored-qualifiers -Wno-unused-result -Wno-address
creating Makefile

current directory: /Users/Goldy/.rbenv/versions/2.5.5/lib/ruby/gems/2.5.0/gems/eventmachine-1.2.7/ext
make "DESTDIR=" clean

current directory: /Users/Goldy/.rbenv/versions/2.5.5/lib/ruby/gems/2.5.0/gems/eventmachine-1.2.7/ext
make "DESTDIR="
compiling binder.cpp
In file included from binder.cpp:20:
In file included from ./project.h:167:
./binder.h:41:3: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
                const uintptr_t GetBinding() {return Binding;}
                ^~~~~~
In file included from binder.cpp:20:
In file included from ./project.h:168:
./em.h:145:3: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
                const uintptr_t InstallOneshotTimer (uint64_t);
                ^~~~~~
./em.h:146:3: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
                const uintptr_t ConnectToServer (const char *, int, const char *, int);
                ^~~~~~
./em.h:147:3: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
                const uintptr_t ConnectToUnixServer (const char *);
                ^~~~~~
./em.h:149:3: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
                const uintptr_t CreateTcpServer (const char *, int);
                ^~~~~~
./em.h:150:3: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
                const uintptr_t OpenDatagramSocket (const char *, int);
                ^~~~~~
./em.h:151:3: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
                const uintptr_t CreateUnixDomainServer (const char*);
                ^~~~~~
./em.h:152:3: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
                const uintptr_t AttachSD (SOCKET);
                ^~~~~~
./em.h:153:3: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
                const uintptr_t OpenKeyboard();
                ^~~~~~
./em.h:155:3: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
                const uintptr_t Socketpair (char* const*);
                ^~~~~~
./em.h:161:3: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
                const uintptr_t AttachFD (SOCKET, bool);
                ^~~~~~
./em.h:178:3: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
                const uintptr_t WatchFile (const char*);
                ^~~~~~
./em.h:187:3: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
                const uintptr_t WatchPid (int);
                ^~~~~~
In file included from binder.cpp:20:
In file included from ./project.h:172:
./eventmachine.h:54:2: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
        const uintptr_t evma_install_oneshot_timer (uint64_t milliseconds);
        ^~~~~~
./eventmachine.h:55:2: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
        const uintptr_t evma_connect_to_server (const char *bind_addr, int bind_port, const char *server, int port);
        ^~~~~~
./eventmachine.h:56:2: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
        const uintptr_t evma_connect_to_unix_server (const char *server);
        ^~~~~~
./eventmachine.h:58:2: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
        const uintptr_t evma_attach_fd (int file_descriptor, int watch_mode);
        ^~~~~~
./eventmachine.h:73:2: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
        const uintptr_t evma_create_tcp_server (const char *address, int port);
        ^~~~~~
./eventmachine.h:74:2: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
        const uintptr_t evma_create_unix_domain_server (const char *filename);
        ^~~~~~
./eventmachine.h:75:2: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
        const uintptr_t evma_attach_sd (int sd);
        ^~~~~~
./eventmachine.h:76:2: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
        const uintptr_t evma_open_datagram_socket (const char *server, int port);
        ^~~~~~
./eventmachine.h:77:2: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
        const uintptr_t evma_open_keyboard();
        ^~~~~~
./eventmachine.h:119:2: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
        const uintptr_t evma_popen (char * const*cmd_strings);
        ^~~~~~
./eventmachine.h:121:2: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
        const uintptr_t evma_watch_filename (const char *fname);
        ^~~~~~
./eventmachine.h:124:2: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
        const uintptr_t evma_watch_pid (int);
        ^~~~~~
25 warnings generated.
compiling cmain.cpp
In file included from cmain.cpp:20:
In file included from ./project.h:167:
./binder.h:41:3: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
                const uintptr_t GetBinding() {return Binding;}
                ^~~~~~
In file included from cmain.cpp:20:
In file included from ./project.h:168:
./em.h:145:3: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
                const uintptr_t InstallOneshotTimer (uint64_t);
                ^~~~~~
./em.h:146:3: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
                const uintptr_t ConnectToServer (const char *, int, const char *, int);
                ^~~~~~
./em.h:147:3: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
                const uintptr_t ConnectToUnixServer (const char *);
                ^~~~~~
./em.h:149:3: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
                const uintptr_t CreateTcpServer (const char *, int);
                ^~~~~~
./em.h:150:3: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
                const uintptr_t OpenDatagramSocket (const char *, int);
                ^~~~~~
./em.h:151:3: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
                const uintptr_t CreateUnixDomainServer (const char*);
                ^~~~~~
./em.h:152:3: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
                const uintptr_t AttachSD (SOCKET);
                ^~~~~~
./em.h:153:3: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
                const uintptr_t OpenKeyboard();
                ^~~~~~
./em.h:155:3: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
                const uintptr_t Socketpair (char* const*);
                ^~~~~~
./em.h:161:3: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
                const uintptr_t AttachFD (SOCKET, bool);
                ^~~~~~
./em.h:178:3: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
                const uintptr_t WatchFile (const char*);
                ^~~~~~
./em.h:187:3: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
                const uintptr_t WatchPid (int);
                ^~~~~~
In file included from cmain.cpp:20:
In file included from ./project.h:172:
./eventmachine.h:54:2: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
        const uintptr_t evma_install_oneshot_timer (uint64_t milliseconds);
        ^~~~~~
./eventmachine.h:55:2: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
        const uintptr_t evma_connect_to_server (const char *bind_addr, int bind_port, const char *server, int port);
        ^~~~~~
./eventmachine.h:56:2: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
        const uintptr_t evma_connect_to_unix_server (const char *server);
        ^~~~~~
./eventmachine.h:58:2: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
        const uintptr_t evma_attach_fd (int file_descriptor, int watch_mode);
        ^~~~~~
./eventmachine.h:73:2: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
        const uintptr_t evma_create_tcp_server (const char *address, int port);
        ^~~~~~
./eventmachine.h:74:2: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
        const uintptr_t evma_create_unix_domain_server (const char *filename);
        ^~~~~~
./eventmachine.h:75:2: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
        const uintptr_t evma_attach_sd (int sd);
        ^~~~~~
./eventmachine.h:76:2: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
        const uintptr_t evma_open_datagram_socket (const char *server, int port);
        ^~~~~~
./eventmachine.h:77:2: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
        const uintptr_t evma_open_keyboard();
        ^~~~~~
./eventmachine.h:119:2: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
        const uintptr_t evma_popen (char * const*cmd_strings);
        ^~~~~~
./eventmachine.h:121:2: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
        const uintptr_t evma_watch_filename (const char *fname);
        ^~~~~~
./eventmachine.h:124:2: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
        const uintptr_t evma_watch_pid (int);
        ^~~~~~
cmain.cpp:103:12: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
extern "C" const uintptr_t evma_install_oneshot_timer (uint64_t milliseconds)
           ^~~~~~
cmain.cpp:114:12: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
extern "C" const uintptr_t evma_connect_to_server (const char *bind_addr, int bind_port, const char *server, int port)
           ^~~~~~
cmain.cpp:124:12: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
extern "C" const uintptr_t evma_connect_to_unix_server (const char *server)
           ^~~~~~
cmain.cpp:134:12: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
extern "C" const uintptr_t evma_attach_fd (int file_descriptor, int watch_mode)
           ^~~~~~
cmain.cpp:277:12: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
extern "C" const uintptr_t evma_create_tcp_server (const char *address, int port)
           ^~~~~~
cmain.cpp:287:12: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
extern "C" const uintptr_t evma_create_unix_domain_server (const char *filename)
           ^~~~~~
cmain.cpp:297:12: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
extern "C" const uintptr_t evma_attach_sd (int sd)
           ^~~~~~
cmain.cpp:307:12: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
extern "C" const uintptr_t evma_open_datagram_socket (const char *address, int port)
           ^~~~~~
cmain.cpp:317:12: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
extern "C" const uintptr_t evma_open_keyboard()
           ^~~~~~
cmain.cpp:327:12: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
extern "C" const uintptr_t evma_watch_filename (const char *fname)
           ^~~~~~
cmain.cpp:347:12: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
extern "C" const uintptr_t evma_watch_pid (int pid)
           ^~~~~~
cmain.cpp:782:12: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
extern "C" const uintptr_t evma_popen (char * const*cmd_strings)
           ^~~~~~
cmain.cpp:890:6: warning: implicit conversion loses integer precision: 'ssize_t' (aka 'long') to 'int' [-Wshorten-64-to-32]
        r = read (Fd, data, filesize);
          ~ ^~~~~~~~~~~~~~~~~~~~~~~~~
38 warnings generated.
compiling ed.cpp
In file included from ed.cpp:20:
In file included from ./project.h:167:
./binder.h:41:3: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
                const uintptr_t GetBinding() {return Binding;}
                ^~~~~~
In file included from ed.cpp:20:
In file included from ./project.h:168:
./em.h:145:3: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
                const uintptr_t InstallOneshotTimer (uint64_t);
                ^~~~~~
./em.h:146:3: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
                const uintptr_t ConnectToServer (const char *, int, const char *, int);
                ^~~~~~
./em.h:147:3: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
                const uintptr_t ConnectToUnixServer (const char *);
                ^~~~~~
./em.h:149:3: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
                const uintptr_t CreateTcpServer (const char *, int);
                ^~~~~~
./em.h:150:3: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
                const uintptr_t OpenDatagramSocket (const char *, int);
                ^~~~~~
./em.h:151:3: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
                const uintptr_t CreateUnixDomainServer (const char*);
                ^~~~~~
./em.h:152:3: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
                const uintptr_t AttachSD (SOCKET);
                ^~~~~~
./em.h:153:3: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
                const uintptr_t OpenKeyboard();
                ^~~~~~
./em.h:155:3: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
                const uintptr_t Socketpair (char* const*);
                ^~~~~~
./em.h:161:3: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
                const uintptr_t AttachFD (SOCKET, bool);
                ^~~~~~
./em.h:178:3: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
                const uintptr_t WatchFile (const char*);
                ^~~~~~
./em.h:187:3: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
                const uintptr_t WatchPid (int);
                ^~~~~~
In file included from ed.cpp:20:
In file included from ./project.h:172:
./eventmachine.h:54:2: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
        const uintptr_t evma_install_oneshot_timer (uint64_t milliseconds);
        ^~~~~~
./eventmachine.h:55:2: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
        const uintptr_t evma_connect_to_server (const char *bind_addr, int bind_port, const char *server, int port);
        ^~~~~~
./eventmachine.h:56:2: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
        const uintptr_t evma_connect_to_unix_server (const char *server);
        ^~~~~~
./eventmachine.h:58:2: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
        const uintptr_t evma_attach_fd (int file_descriptor, int watch_mode);
        ^~~~~~
./eventmachine.h:73:2: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
        const uintptr_t evma_create_tcp_server (const char *address, int port);
        ^~~~~~
./eventmachine.h:74:2: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
        const uintptr_t evma_create_unix_domain_server (const char *filename);
        ^~~~~~
./eventmachine.h:75:2: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
        const uintptr_t evma_attach_sd (int sd);
        ^~~~~~
./eventmachine.h:76:2: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
        const uintptr_t evma_open_datagram_socket (const char *server, int port);
        ^~~~~~
./eventmachine.h:77:2: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
        const uintptr_t evma_open_keyboard();
        ^~~~~~
./eventmachine.h:119:2: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
        const uintptr_t evma_popen (char * const*cmd_strings);
        ^~~~~~
./eventmachine.h:121:2: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
        const uintptr_t evma_watch_filename (const char *fname);
        ^~~~~~
./eventmachine.h:124:2: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
        const uintptr_t evma_watch_pid (int);
        ^~~~~~
ed.cpp:642:28: warning: implicit conversion loses integer precision: 'unsigned long' to 'int' [-Wshorten-64-to-32]
                                int remaining = length - writed;
                                    ~~~~~~~~~   ~~~~~~~^~~~~~~~
ed.cpp:700:49: warning: implicit conversion loses integer precision: 'unsigned long' to 'int' [-Wshorten-64-to-32]
        OutboundPages.push_back (OutboundPage (buffer, length));
                                 ~~~~~~~~~~~~          ^~~~~~
ed.cpp:705:9: warning: implicit conversion loses integer precision: 'unsigned long' to 'int' [-Wshorten-64-to-32]
        return length;
        ~~~~~~ ^~~~~~
ed.cpp:850:11: warning: implicit conversion loses integer precision: 'ssize_t' (aka 'long') to 'int' [-Wshorten-64-to-32]
                int r = read (sd, readbuffer, sizeof(readbuffer) - 1);
                    ~   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ed.cpp:915:34: warning: implicit conversion loses integer precision: 'unsigned long' to 'int' [-Wshorten-64-to-32]
                SslBox->PutCiphertext (buffer, size);
                        ~~~~~~~~~~~~~          ^~~~
ed.cpp:1079:29: warning: implicit conversion loses integer precision: 'std::deque<ConnectionDescriptor::OutboundPage>::size_type' (aka 'unsigned long') to 'int' [-Wshorten-64-to-32]
        int iovcnt = OutboundPages.size();
            ~~~~~~   ~~~~~~~~~~~~~~^~~~~~
ed.cpp:1126:22: warning: implicit conversion loses integer precision: 'ssize_t' (aka 'long') to 'int' [-Wshorten-64-to-32]
        int bytes_written = writev (GetSocket(), iov, iovcnt);
            ~~~~~~~~~~~~~   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ed.cpp:1763:11: warning: implicit conversion loses integer precision: 'ssize_t' (aka 'long') to 'int' [-Wshorten-64-to-32]
                int r = recvfrom (sd, readbuffer, sizeof(readbuffer) - 1, 0, (struct sockaddr*)&sin, &slen);
                    ~   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ed.cpp:1833:11: warning: implicit conversion loses integer precision: 'ssize_t' (aka 'long') to 'int' [-Wshorten-64-to-32]
                int s = sendto (sd, (char*)op->Buffer, op->Length, 0, (struct sockaddr*)&(op->From),
                    ~   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ed.cpp:1911:49: warning: implicit conversion loses integer precision: 'unsigned long' to 'int' [-Wshorten-64-to-32]
        OutboundPages.push_back (OutboundPage (buffer, length, ReturnAddress));
                                 ~~~~~~~~~~~~          ^~~~~~
ed.cpp:1925:9: warning: implicit conversion loses integer precision: 'unsigned long' to 'int' [-Wshorten-64-to-32]
        return length;
        ~~~~~~ ^~~~~~
ed.cpp:1958:49: warning: implicit conversion loses integer precision: 'unsigned long' to 'int' [-Wshorten-64-to-32]
        OutboundPages.push_back (OutboundPage (buffer, length, addr_here));
                                 ~~~~~~~~~~~~          ^~~~~~
ed.cpp:1972:9: warning: implicit conversion loses integer precision: 'unsigned long' to 'int' [-Wshorten-64-to-32]
        return length;
        ~~~~~~ ^~~~~~
38 warnings generated.
compiling em.cpp
In file included from em.cpp:23:
In file included from ./project.h:167:
./binder.h:41:3: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
                const uintptr_t GetBinding() {return Binding;}
                ^~~~~~
In file included from em.cpp:23:
In file included from ./project.h:168:
./em.h:145:3: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
                const uintptr_t InstallOneshotTimer (uint64_t);
                ^~~~~~
./em.h:146:3: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
                const uintptr_t ConnectToServer (const char *, int, const char *, int);
                ^~~~~~
./em.h:147:3: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
                const uintptr_t ConnectToUnixServer (const char *);
                ^~~~~~
./em.h:149:3: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
                const uintptr_t CreateTcpServer (const char *, int);
                ^~~~~~
./em.h:150:3: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
                const uintptr_t OpenDatagramSocket (const char *, int);
                ^~~~~~
./em.h:151:3: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
                const uintptr_t CreateUnixDomainServer (const char*);
                ^~~~~~
./em.h:152:3: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
                const uintptr_t AttachSD (SOCKET);
                ^~~~~~
./em.h:153:3: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
                const uintptr_t OpenKeyboard();
                ^~~~~~
./em.h:155:3: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
                const uintptr_t Socketpair (char* const*);
                ^~~~~~
./em.h:161:3: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
                const uintptr_t AttachFD (SOCKET, bool);
                ^~~~~~
./em.h:178:3: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
                const uintptr_t WatchFile (const char*);
                ^~~~~~
./em.h:187:3: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
                const uintptr_t WatchPid (int);
                ^~~~~~
In file included from em.cpp:23:
In file included from ./project.h:172:
./eventmachine.h:54:2: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
        const uintptr_t evma_install_oneshot_timer (uint64_t milliseconds);
        ^~~~~~
./eventmachine.h:55:2: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
        const uintptr_t evma_connect_to_server (const char *bind_addr, int bind_port, const char *server, int port);
        ^~~~~~
./eventmachine.h:56:2: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
        const uintptr_t evma_connect_to_unix_server (const char *server);
        ^~~~~~
./eventmachine.h:58:2: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
        const uintptr_t evma_attach_fd (int file_descriptor, int watch_mode);
        ^~~~~~
./eventmachine.h:73:2: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
        const uintptr_t evma_create_tcp_server (const char *address, int port);
        ^~~~~~
./eventmachine.h:74:2: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
        const uintptr_t evma_create_unix_domain_server (const char *filename);
        ^~~~~~
./eventmachine.h:75:2: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
        const uintptr_t evma_attach_sd (int sd);
        ^~~~~~
./eventmachine.h:76:2: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
        const uintptr_t evma_open_datagram_socket (const char *server, int port);
        ^~~~~~
./eventmachine.h:77:2: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
        const uintptr_t evma_open_keyboard();
        ^~~~~~
./eventmachine.h:119:2: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
        const uintptr_t evma_popen (char * const*cmd_strings);
        ^~~~~~
./eventmachine.h:121:2: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
        const uintptr_t evma_watch_filename (const char *fname);
        ^~~~~~
./eventmachine.h:124:2: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
        const uintptr_t evma_watch_pid (int);
        ^~~~~~
em.cpp:303:14: warning: implicit conversion loses integer precision: 'rlim_t' (aka 'unsigned long long') to 'int' [-Wshorten-64-to-32]
        return rlim.rlim_cur;
        ~~~~~~ ~~~~~^~~~~~~~
em.cpp:706:13: error: use of undeclared identifier 'rb_thread_select'; did you mean 'rb_thread_fd_select'?
        if ((ret = rb_thread_select(kqfd + 1, &fdreads, NULL, NULL, &tv)) < 1) {
                   ^~~~~~~~~~~~~~~~
                   rb_thread_fd_select
/Users/Goldy/.rbenv/versions/2.5.5/include/ruby-2.5.0/ruby/intern.h:438:5: note: 'rb_thread_fd_select' declared here
int rb_thread_fd_select(int, rb_fdset_t *, rb_fdset_t *, rb_fdset_t *, struct timeval *);
    ^
em.cpp:706:40: error: cannot initialize a parameter of type 'rb_fdset_t *' with an rvalue of type 'fd_set *'
        if ((ret = rb_thread_select(kqfd + 1, &fdreads, NULL, NULL, &tv)) < 1) {
                                              ^~~~~~~~
/Users/Goldy/.rbenv/versions/2.5.5/include/ruby-2.5.0/ruby/intern.h:438:42: note: passing argument to parameter here
int rb_thread_fd_select(int, rb_fdset_t *, rb_fdset_t *, rb_fdset_t *, struct timeval *);
                                         ^
em.cpp:838:29: warning: implicit conversion loses integer precision: 'std::vector<EventableDescriptor *>::size_type' (aka 'unsigned long') to 'int' [-Wshorten-64-to-32]
        int nSockets = Descriptors.size();
            ~~~~~~~~   ~~~~~~~~~~~~^~~~~~
em.cpp:939:9: error: use of undeclared identifier 'rb_thread_select'; did you mean 'rb_thread_fd_select'?
        return EmSelect (maxsocket+1, &fdreads, &fdwrites, &fderrors, &tv);
               ^~~~~~~~
               rb_thread_fd_select
./em.h:29:22: note: expanded from macro 'EmSelect'
    #define EmSelect rb_thread_select
                     ^
/Users/Goldy/.rbenv/versions/2.5.5/include/ruby-2.5.0/ruby/intern.h:438:5: note: 'rb_thread_fd_select' declared here
int rb_thread_fd_select(int, rb_fdset_t *, rb_fdset_t *, rb_fdset_t *, struct timeval *);
    ^
em.cpp:1063:6: error: use of undeclared identifier 'rb_thread_select'; did you mean 'rb_thread_fd_select'?
                                        EmSelect (0, NULL, NULL, NULL, &tv);
                                        ^~~~~~~~
                                        rb_thread_fd_select
./em.h:29:22: note: expanded from macro 'EmSelect'
    #define EmSelect rb_thread_select
                     ^
/Users/Goldy/.rbenv/versions/2.5.5/include/ruby-2.5.0/ruby/intern.h:438:5: note: 'rb_thread_fd_select' declared here
int rb_thread_fd_select(int, rb_fdset_t *, rb_fdset_t *, rb_fdset_t *, struct timeval *);
    ^
em.cpp:1145:1: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
const uintptr_t EventMachine_t::InstallOneshotTimer (uint64_t milliseconds)
^~~~~~
em.cpp:1167:1: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
const uintptr_t EventMachine_t::ConnectToServer (const char *bind_addr, int bind_port, const char *server, int port)
^~~~~~
em.cpp:1233:46: warning: implicit conversion loses integer precision: 'size_t' (aka 'unsigned long') to 'socklen_t' (aka 'unsigned int') [-Wshorten-64-to-32]
                if (bind (sd, (struct sockaddr *)&bind_to, bind_to_len) < 0) {
                    ~~~~                                   ^~~~~~~~~~~
em.cpp:1243:48: warning: implicit conversion loses integer precision: 'size_t' (aka 'unsigned long') to 'socklen_t' (aka 'unsigned int') [-Wshorten-64-to-32]
        if (connect (sd, (struct sockaddr *)&bind_as, bind_as_len) == 0) {
            ~~~~~~~                                   ^~~~~~~~~~~
em.cpp:1358:1: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
const uintptr_t EventMachine_t::ConnectToUnixServer (const char *server)
^~~~~~
em.cpp:1428:1: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
const uintptr_t EventMachine_t::AttachFD (SOCKET fd, bool watch_mode)
^~~~~~
em.cpp:1577:1: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
const uintptr_t EventMachine_t::CreateTcpServer (const char *server, int port)
^~~~~~
em.cpp:1614:54: warning: implicit conversion loses integer precision: 'size_t' (aka 'unsigned long') to 'socklen_t' (aka 'unsigned int') [-Wshorten-64-to-32]
        if (bind (sd_accept, (struct sockaddr *)&bind_here, bind_here_len)) {
            ~~~~                                            ^~~~~~~~~~~~~
em.cpp:1637:1: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
const uintptr_t EventMachine_t::OpenDatagramSocket (const char *address, int port)
^~~~~~
em.cpp:1661:47: warning: implicit conversion loses integer precision: 'size_t' (aka 'unsigned long') to 'socklen_t' (aka 'unsigned int') [-Wshorten-64-to-32]
        if (bind (sd, (struct sockaddr *)&bind_here, bind_here_len) != 0)
            ~~~~                                     ^~~~~~~~~~~~~
em.cpp:1912:1: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
const uintptr_t EventMachine_t::CreateUnixDomainServer (const char *filename)
^~~~~~
em.cpp:1976:1: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
const uintptr_t EventMachine_t::AttachSD (SOCKET sd_accept)
^~~~~~
em.cpp:2012:1: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
const uintptr_t EventMachine_t::Socketpair (char * const * cmd_strings)
^~~~~~
em.cpp:2075:1: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
const uintptr_t EventMachine_t::OpenKeyboard()
^~~~~~
em.cpp:2096:52: warning: implicit conversion loses integer precision: 'unsigned long' to 'int' [-Wshorten-64-to-32]
        return Descriptors.size() + NewDescriptors.size() - i;
        ~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~
em.cpp:2105:1: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
const uintptr_t EventMachine_t::WatchPid (int pid)
^~~~~~
em.cpp:2176:1: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
const uintptr_t EventMachine_t::WatchFile (const char *fpath)
^~~~~~
44 warnings and 4 errors generated.
make: *** [em.o] Error 1

make failed, exit code 2