A issue with hiredis

Gem Environment

RubyGems Environment:
  - RUBYGEMS VERSION: 2.7.6
  - RUBY VERSION: 2.4.4 (2018-03-28 patchlevel 296) [x86_64-darwin17]
  - INSTALLATION DIRECTORY: /Users/alexandrecote/.gem/ruby/2.4.4
  - USER INSTALLATION DIRECTORY: /Users/alexandrecote/.gem/ruby/2.4.0
  - RUBY EXECUTABLE: /opt/rubies/2.4.4/bin/ruby
  - EXECUTABLE DIRECTORY: /Users/alexandrecote/.gem/ruby/2.4.4/bin
  - SPEC CACHE DIRECTORY: /Users/alexandrecote/.gem/specs
  - SYSTEM CONFIGURATION DIRECTORY: /opt/rubies/2.4.4/etc
  - RUBYGEMS PLATFORMS:
    - ruby
    - x86_64-darwin-17
  - GEM PATHS:
     - /Users/alexandrecote/.gem/ruby/2.4.4
     - /opt/rubies/2.4.4/lib/ruby/gems/2.4.0
  - GEM CONFIGURATION:
     - :update_sources => true
     - :verbose => true
     - :backtrace => false
     - :bulk_threshold => 1000
  - REMOTE SOURCES:
     - https://rubygems.org/
  - SHELL PATH:
     - /Users/alexandrecote/.nvm/versions/node/v8.9.4/bin
     - /Users/alexandrecote/.gem/ruby/2.4.4/bin
     - /opt/rubies/2.4.4/lib/ruby/gems/2.4.0/bin
     - /opt/rubies/2.4.4/bin
     - /usr/local/bin
     - /usr/local/sbin
     - /usr/local/opt/coreutils/libexec/gnubin
     - /Users/alexandrecote/.zsh/bin
     - /usr/local/opt/zplug/repos/paulirish/git-open
     - /usr/local/Cellar/zplug/2.4.2/bin
     - /usr/local/bin
     - /usr/bin
     - /bin
     - /usr/sbin
     - /sbin

gistfile1.txt

current directory: /Users/alexandrecote/.gem/ruby/2.4.4/gems/hiredis-0.6.0/ext/hiredis_ext
/opt/rubies/2.4.4/bin/ruby -r ./siteconf20180510-29109-1bwc65u.rb extconf.rb
cc -std=c99 -pedantic -c -O3 -fPIC  -Wall -W -Wstrict-prototypes -Wwrite-strings true  net.c
clang: error: no such file or directory: 'true'
make: *** [net.o] Error 1
*** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of necessary
libraries and/or headers.  Check the mkmf.log file for more details.  You may
need configuration options.

Provided configuration options:
	--with-opt-dir
	--with-opt-include
	--without-opt-include=${opt-dir}/include
	--with-opt-lib
	--without-opt-lib=${opt-dir}/lib
	--with-make-prog
	--without-make-prog
	--srcdir=.
	--curdir
	--ruby=/opt/rubies/2.4.4/bin/$(RUBY_BASE_NAME)
extconf.rb:25:in `block in <main>': Building hiredis failed (RuntimeError)
	from extconf.rb:23:in `chdir'
	from extconf.rb:23:in `<main>'

extconf failed, exit code 1

Terminal stack trace

Gem files will remain installed in /Users/alexandrecote/.gem/ruby/2.4.4/gems/hiredis-0.6.0 for inspection.
┃┃ Results logged to /Users/alexandrecote/.gem/ruby/2.4.4/extensions/x86_64-darwin-17/2.4.0-static/hiredis-0.6.0/gem_make.out
┃┃
┃┃   /opt/rubies/2.4.4/lib/ruby/site_ruby/2.4.0/rubygems/ext/builder.rb:92:in `run'
┃┃   /opt/rubies/2.4.4/lib/ruby/site_ruby/2.4.0/rubygems/ext/ext_conf_builder.rb:46:in `block in build'
┃┃   /opt/rubies/2.4.4/lib/ruby/2.4.0/tempfile.rb:295:in `open'
┃┃   /opt/rubies/2.4.4/lib/ruby/site_ruby/2.4.0/rubygems/ext/ext_conf_builder.rb:30:in `build'
┃┃   /opt/rubies/2.4.4/lib/ruby/site_ruby/2.4.0/rubygems/ext/builder.rb:164:in `block (2 levels) in build_extension'
┃┃   /opt/rubies/2.4.4/lib/ruby/site_ruby/2.4.0/rubygems/ext/builder.rb:163:in `chdir'
┃┃   /opt/rubies/2.4.4/lib/ruby/site_ruby/2.4.0/rubygems/ext/builder.rb:163:in `block in build_extension'
┃┃   /opt/rubies/2.4.4/lib/ruby/2.4.0/monitor.rb:214:in `mon_synchronize'
┃┃   /opt/rubies/2.4.4/lib/ruby/site_ruby/2.4.0/rubygems/ext/builder.rb:162:in `b
┃┃ uild_extension'
┃┃   /opt/rubies/2.4.4/lib/ruby/site_ruby/2.4.0/rubygems/ext/builder.rb:201:in `block in build_extensions'
┃┃   /opt/rubies/2.4.4/lib/ruby/site_ruby/2.4.0/rubygems/ext/builder.rb:198:in `each'
┃┃   /opt/rubies/2.4.4/lib/ruby/site_ruby/2.4.0/rubygems/ext/builder.rb:198:in `build_extensions'
┃┃   /opt/rubies/2.4.4/lib/ruby/site_ruby/2.4.0/rubygems/installer.rb:774:in `build_extensions'
┃┃   /opt/rubies/2.4.4/lib/ruby/site_ruby/2.4.0/bundler/rubygems_gem_installer.rb:23:in `build_extensions'
┃┃   /opt/rubies/2.4.4/lib/ruby/site_ruby/2.4.0/rubygems/installer.rb:306:in `install'
┃┃   /opt/rubies/2.4.4/lib/ruby/site_ruby/2.4.0/bundler/source/rubygems.rb:153:in `block in install'
┃┃   /opt/rubies/2.4.4/lib/ruby/site_ruby/2.4.0/bundler/rubygems_integration.rb:217:in `preserve_paths'
┃┃   /opt/rubies/2.4.4/lib/ruby/site_ruby/2.4.0/bundler/source/rubygems.rb:142:in `install'
┃┃   /opt/rubies/2.4.4/lib/ruby/site_ruby/2.4.0/bundler/installer/gem_installer.rb:56:in `install'
┃┃   /opt/rubies/2.4.4/lib/ruby/site_ruby/2.4.0/bundler/installer/gem_installer.rb:16:in `install_from_spec'
┃┃   /opt/rubies/2.4.4/lib/ruby/site_ruby/2.4.0/bundler/installer/parallel_installer.rb:162:in `do_install'
┃┃   /opt/rubies/2.4.4/lib/ruby/site_ruby/2.4.0/bundler/installer/parallel_installer.rb:153:in `block in worker_pool'
┃┃   /opt/rubies/2.4.4/lib/ruby/site_ruby/2.4.0/bundler/worker.rb:64:in `apply_func'
┃┃   /opt/rubies/2.4.4/lib/ruby/site_ruby/2.4.0/bundler/worker.rb:59:in `block in process_queue'
┃┃   /opt/rubies/2.4.4/lib/ruby/site_ruby/2.4.0/bundler/worker.rb:56:in `loop'
┃┃   /opt/rubies/2.4.4/lib/ruby/site_ruby/2.4.0/bundler/worker.rb:56:in `process_queue'
┃┃   /opt/rubies/2.4.4/lib/ruby/site_ruby/2.4.0/bundler/worker.rb:90:in `block (2 levels) in create_threads'
┃┃
┃┃ An error occurred while installing hiredis (0.6.0), and Bundler cannot continue.
┃┃ Make sure that `gem install hiredis -v '0.6.0'` succeeds before bundling.
┃┃
┃┃ In Gemfile:
┃┃   hiredis
┃┃ Bundler::InstallError: Gem::Ext::BuildError: ERROR: Failed to build gem native extension.

Can you include the /Users/alexandrecote/.gem/ruby/2.4.4/extensions/x86_64-darwin-17/2.4.0-static/hiredis-0.6.0/gem_make.out too?