ERROR: Failed to build gem native extension.

[gurjitsi]

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

current directory: /Library/Ruby/Gems/2.3.0/gems/ffi-1.12.2/ext/ffi_c

/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/bin/ruby -r ./siteconf20200323-649-ke9uqe.rb extconf.rb
mkmf.rb can't find header files for ruby at /System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib/ruby/include/ruby.h

extconf failed, exit code 1

Gem files will remain installed in /Library/Ruby/Gems/2.3.0/gems/ffi-1.12.2 for inspection.
Results logged to /Library/Ruby/Gems/2.3.0/extensions/universal-darwin-18/2.3.0/ffi-1.12.2/gem_make.out

[dnkoutso]

There is little information for us to debug here and this issue has come up before. Please search in the issues list or ask in StackOverflow instead as this does not appear to be a CocoaPods issue.

Our CI passes with all these Ruby versions:

  - 2.0.0-p647
  - 2.3.4
  - 2.4.1
  - 2.6.2