simdjson: `padded_string': External LLVMFunction _ZN8simdjson22allocate_padded_bufferEm cannot be found

[deepj]

truffleruby 20.1.0-dev-d6e1b291, like ruby 2.6.5, GraalVM CE Native [x86_64-darwin]

To reproduce:

gem install simdjson
ruby -rsimdjson -e 'p Simdjson.parse %|{"a": 12345}| # => {"a"=>12345}'

Error:

~/.gem/truffleruby/2.6.5/gems/simdjson-0.2.0/vendor/simdjson/singleheader/simdjson.h:527:in `padded_string': External LLVMFunction _ZN8simdjson22allocate_padded_bufferEm cannot be found. (LLVMLinkerException) (RuntimeError)
Translated to internal error
	from ~/.gem/truffleruby/2.6.5/gems/simdjson-0.2.0/vendor/simdjson/singleheader/simdjson.h:527:in `padded_string'
	from ~/.gem/truffleruby/2.6.5/gems/simdjson-0.2.0/ext/simdjson/simdjson.cpp:60:in `rb_simdjson_parse'
	from ~/.rubies/truffleruby-dev/lib/truffle/truffle/cext_ruby.rb:39:in `parse'
	from -e:1:in `<main>'

[eregon]

That seems to happen because libsimdjson is compiled as native without bitcode:
https://github.com/saka1/simdjson_ruby/blob/93189b84d744c46d7f7cef381f497669e04f05bc/ext/simdjson/extconf.rb#L13-L18

[eregon]

One idea here is to compile libsimdjson with the toolchain as well, which seems to work by adding the toolchain's bin to the PATH. That leads to some parse error though at runtime:

The processor is not supported by simdjson.
lib/truffle/truffle/cext.rb:1268:in `rb_exc_raise': parse error (Simdjson::ParseError)
	from src/main/c/cext/ruby.c:2114:in `rb_exc_raise'
	from lib/gems/gems/simdjson-0.2.0/ext/simdjson/simdjson.cpp:63:in `rb_simdjson_parse'
	from lib/truffle/truffle/cext_ruby.rb:39:in `parse'
	from -e:1:in `<main>'

[eregon]

It works now, with 5f33393:

$ ruby -v -rsimdjson -e 'p Simdjson.parse %|{"a": 12345}| # => {"a"=>12345}'
truffleruby 21.1.0-dev-c03738b2, like ruby 2.7.2, GraalVM CE Native [x86_64-linux]
{"a"=>12345}