2.6.6 on ARM64

[nelseric]

I've managed to install 2.7.2 and 3.0.0, but 2.6.6 fails with the following error

compiling closure.c
closure.c:264:14: error: implicit declaration of function 'ffi_prep_closure' is
      invalid in C99 [-Werror,-Wimplicit-function-declaration]
    result = ffi_prep_closure(pcl, cif, callback, (void *)self);
             ^
1 error generated.

[hsbt]

It's known issue. Ruby 2.6 didn't support M1 macOS yet.

If you want to use Ruby 2.6 with M1 macOS, Can you file it to https://bugs.ruby-lang.org/? Thanks.

[nelseric]

Thanks for pointing me in the right direction.

[mrkn]

@nelseric I guess the error is only due to fiddle. Probably, you can install Ruby 2.6 with specifying --with-out-ext=fiddle in the configure option.

[nelseric]

@mrkn Thanks, that worked

[rience]

I was also able to install Ruby 2.6.6 with this

RUBY_CFLAGS=-DUSE_FFI_CLOSURE_ALLOC rbenv install 2.6.6

[santostiago]

I ended up doing this:

export optflags="-Wno-error=implicit-function-declaration"; export LDFLAGS="-L/opt/homebrew/opt/libffi/lib"; export CPPFLAGS="-I/opt/homebrew/opt/libffi/include"; export PKG_CONFIG_PATH="/opt/homebrew/opt/libffi/lib/pkgconfig" | rbenv install 2.5.5

[SalvatoreT]

@santostiago, that worked for me. Thank you!

[ak15]

I ended up doing this:

export optflags="-Wno-error=implicit-function-declaration"; export LDFLAGS="-L/opt/homebrew/opt/libffi/lib"; export CPPFLAGS="-I/opt/homebrew/opt/libffi/include"; export PKG_CONFIG_PATH="/opt/homebrew/opt/libffi/lib/pkgconfig" | rbenv install 2.5.5

This worked for me in My Apple M1 - Please try this if you are facing issue (I tried for ruby v 2.6.0) and don't need rosetta too

@santostiago

Once again thanks worked with 2.6.6

[HundredBillion]

THIS WORKED FOR ME
I spent 3hrs trying to get ruby 2.6.2 installed on my M1.

These 3 lines of code worked for me. Just make sure to change the version number to 2.6.2 (if that is what you need)

export optflags="-Wno-error=implicit-function-declaration"; export LDFLAGS="-L/opt/homebrew/opt/libffi/lib"; export CPPFLAGS="-I/opt/homebrew/opt/libffi/include"; export PKG_CONFIG_PATH="/opt/homebrew/opt/libffi/lib/pkgconfig" | rbenv install 2.5.5

[edmangimelli]

thank you so much @santostiago 😭

this actually solved my asdf install problem: (fish shell)

set -gx optflags "-Wno-error=implicit-function-declaration"
set -gx LDFLAGS "-L/opt/homebrew/opt/libffi/lib"
set -gx CPPFLAGS "-I/opt/homebrew/opt/libffi/include"
set -gx PKG_CONFIG_PATH "/opt/homebrew/opt/libffi/lib/pkgconfig"
asdf install ruby 2.6.6

[jujudellago]

I ended up doing this:

export optflags="-Wno-error=implicit-function-declaration"; export LDFLAGS="-L/opt/homebrew/opt/libffi/lib"; export CPPFLAGS="-I/opt/homebrew/opt/libffi/include"; export PKG_CONFIG_PATH="/opt/homebrew/opt/libffi/lib/pkgconfig" | rbenv install 2.5.5

more thanks for you @santostiago !!! you saved my day !!

• oh edit... now that I got ruby compiled with rbenv or asdf successfully, now looking for a way to actually run rails....

endless ffi errors

/Users/juju/.asdf/installs/ruby/2.6.5/lib/ruby/gems/2.6.0/gems/ffi-1.9.18/lib/ffi/types.rb:69:in find_type': unable to resolve type 'size_t' (TypeError)`