ERROR: Failed to build gem native extension.

[markwyner]

Hi. I can’t get eventmachine installed. I’ve tried with various options, but nothing gets past the error.

My environment:

• macOS 13.3.1 (a) (22E772610a)
• ruby 3.0.0p0 (2020-12-25 revision 95aff21468) [x86_64-darwin22]
• rvm 1.29.12 (latest)

I’m trying to run Middleman, but bundle install and bundle update fail because of eventmachine. Also, if I isolate this issue and simply try to install eventmachine without any relationship to Middleman, I still receive an error. gem install eventmachine yields the following:

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

    current directory: /Users/markwyner/.rvm/gems/ruby-3.0.0/gems/eventmachine-1.2.7/ext
/Users/markwyner/.rvm/rubies/ruby-3.0.0/bin/ruby -I /Users/markwyner/.rvm/rubies/ruby-3.0.0/lib/ruby/3.0.0 -r ./siteconf20230509-5730-i6yoqw.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… yes
checking for rb_thread_fd_select()… yes
checking for rb_fdset_t in ruby/intern.h… yes
checking for rb_wait_for_single_fd()… yes
checking for rb_enable_interrupt()… no
checking for rb_time_new()… yes
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= -Wall -Wextra -Wno-deprecated-declarations -Wno-ignored-qualifiers -Wno-unused-result -Wno-address
creating Makefile

current directory: /Users/markwyner/.rvm/gems/ruby-3.0.0/gems/eventmachine-1.2.7/ext
make “DESTDIR=” clean

current directory: /Users/markwyner/.rvm/gems/ruby-3.0.0/gems/eventmachine-1.2.7/ext
make “DESTDIR=”
compiling binder.cpp
In file included from binder.cpp:20:
./project.h:119:10: fatal error: ‘openssl/ssl.h’ file not found
#include <openssl/ssl.h>
         ^~~~~~~~~~~~~~~
1 error generated.
make: *** [binder.o] Error 1

make failed, exit code 2

Gem files will remain installed in /Users/markwyner/.rvm/gems/ruby-3.0.0/gems/eventmachine-1.2.7 for inspection.
Results logged to /Users/markwyner/.rvm/gems/ruby-3.0.0/extensions/x86_64-darwin-22/3.0.0/eventmachine-1.2.7/gem_make.out

Please let me know how you can help. Thank you.

[sodabrew]

project.h:119:10: fatal error: ‘openssl/ssl.h’ file not found
#include <openssl/ssl.h>
^~~~~~~~~~~~~~~
1 error generated.

You'll need install OpenSSL and OpenSSL dev headers.

[supermario]

@markwyner ran into the same issue today, try this:

brew install openssl@1.1 
# or `brew reinstall openssl@1.1` if you already installed another version
gem install eventmachine -- --with-openssl-dir=$(brew --prefix openssl@1.1)

[bjer]

On a M2 machine running Ventura 13.5 I had to use openssl@3 from homebrew:

brew install openssl@3
gem install eventmachine -- --with-openssl-dir=$(brew --prefix openssl@3)

[blowfishpro]

It's odd that it has

checking for openssl/ssl.h… yes

but then

project.h:119:10: fatal error: ‘openssl/ssl.h’ file not found

[blowfishpro]

this also seems related?