Error installing zendesk_apps_tools

[naliferov]

OS: Ubuntu 19.10 x64
Ruby: 2.6.5

I try to install zendesk apps tools according to this article.
https://develop.zendesk.com/hc/en-us/articles/360001075048

I try command sudo gem install zendesk_apps_tools and getting errors below

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

    current directory: /root/.gem/gems/eventmachine-1.2.7/ext
/snap/bin/ruby -I /snap/ruby/160/lib/ruby/2.6.0 -r ./siteconf20191205-22669-1yyi2yu.rb extconf.rb
checking for -lcrypto... no
checking for openssl/ssl.h... no
checking for -lcrypto... no
checking for openssl/ssl.h... no
checking for -lcrypto... no
checking for openssl/ssl.h... no
checking for -lcrypto... no
checking for openssl/ssl.h... no
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... yes
checking for writev() in sys/uio.h... yes
checking for pipe2() in unistd.h... yes
checking for accept4() in sys/socket.h... yes
checking for SOCK_CLOEXEC in sys/socket.h... yes
checking for sys/event.h... no
checking for epoll_create() in sys/epoll.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: /root/.gem/gems/eventmachine-1.2.7/ext
make "DESTDIR=" clean

current directory: /root/.gem/gems/eventmachine-1.2.7/ext
make "DESTDIR="
compiling binder.cpp
cc1plus: warning: command line option ‘-Wdeclaration-after-statement’ is valid for C/ObjC but not for C++
cc1plus: warning: command line option ‘-Wimplicit-function-declaration’ is valid for C/ObjC but not for C++
cc1plus: warning: command line option ‘-Wimplicit-int’ is valid for C/ObjC but not for C++
In file included from project.h:167,
                 from binder.cpp:20:
binder.h:41:3: warning: type qualifiers ignored on function return type [-Wignored-qualifiers]
   41 |   const uintptr_t GetBinding() {return Binding;}

[KuhnDom]

I am experiencing the same problem in Windows using bash and Ubuntu. Has a solution to this problem been found?

[memken]

I'm having the same issue. MacOS Catalina