Fail on running the binary build for my rails 4.2

[ivanyucp]

I tried to compile my Rails 4.2 project on Ruby 2.4.2 in OSX 10.13.2. It took nearly an 70 minutes to complete. The binary file is 779M (it's a large project with a lot of testing code). When I try to run it, it product the below error message and crashed, could you please help? Thanks a lot!

$ ./a.out
/__enclose_io_memfs__/local/vendor/bundle/ruby/2.4.0/gems/bootsnap-1.0.0/lib/bootsnap/compile_cache/iseq.rb:40:in `fetch': No such file or directory (Errno::ENOENT)
	from /__enclose_io_memfs__/local/vendor/bundle/ruby/2.4.0/gems/bootsnap-1.0.0/lib/bootsnap/compile_cache/iseq.rb:40:in `load_iseq'
	from /__enclose_io_memfs__/local/vendor/bundle/ruby/2.4.0/gems/bootsnap-1.0.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:17:in `require'
	from /__enclose_io_memfs__/local/vendor/bundle/ruby/2.4.0/gems/bootsnap-1.0.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:17:in `require'
	from /__enclose_io_memfs__/local/vendor/bundle/ruby/2.4.0/gems/activesupport-4.2.8/lib/active_support/dependencies.rb:274:in `block in require'
	from /__enclose_io_memfs__/local/vendor/bundle/ruby/2.4.0/gems/activesupport-4.2.8/lib/active_support/dependencies.rb:240:in `load_dependency'
	from /__enclose_io_memfs__/local/vendor/bundle/ruby/2.4.0/gems/activesupport-4.2.8/lib/active_support/dependencies.rb:274:in `require'
	from /__enclose_io_memfs__/local/bin/rails:8:in `<main>'

Please note that compiling and run Rails 5 sample app seems works in the same environment.

[yourivdlans]

I've had the same trouble when compiling a Rails 5 app. After removing bootsnap from the Gemfile and commenting out the line require 'bootsnap/setup' from config/boot.rb it was able to compile and start a server.

[drbrain]

bootsnap is incompatible with rubyc because it uses open(2) instead of ruby's IO methods meaning it bypasses the memfs lookup:

https://github.com/Shopify/bootsnap/blob/4bd3c2b7dbd85772e218dd813791ecb0029e70fe/ext/bootsnap/bootsnap.c#L301

Maybe you can disable only the part of bootsnap that routes through that method?

If bootsnap were patched to use ruby's IO methods I'm unsure what speed benefit you could get with rubyc as the files are all in memory already, it would require some benchmarking.

[yourivdlans]

If bootsnap were patched to use ruby's IO methods I'm unsure what speed benefit you could get with rubyc as the files are all in memory already, it would require some benchmarking.

I agree, maybe we could add a note in the readme for this.

[drbrain]

Done! ↑