Misc #17174: "Error relocating, symbol not found" error when compiling a native extension on Alpine with Ruby >=2.4

• Status: Feedback
• Assignee: -
• Tags: musl, alpine

[Nakilon (Victor Maslov)]

My native extension gem compiles fine with all versions of Ruby on macOS but only with Ruby 2.3 on Alpine. It throws various Error relocating, symbol not found when I require the .o file. Here I made a branch to reproduce it in Docker quickly.

git clone https://github.com/Nakilon/dhash-vips.git --branch alpine-compilation-issues alpine-compilation-issues && cd alpine-compilation-issues

# compiles and does not fail on require
docker build - -t temp-ruby2.3.8 --build-arg RUBY_VERSION=2.3.8 --build-arg ALPINE_VERSION=3.8 <Dockerfile

# Error relocating /dhash-vips/idhash.so: rb_deprecate_constant: symbol not found - /dhash-vips/idhash.so (LoadError)
docker build - -t temp-ruby2.4.10 --build-arg RUBY_VERSION=2.4.10 --build-arg ALPINE_VERSION=3.11 <Dockerfile

# Error relocating /dhash-vips/idhash.so: rb_int_modulo: symbol not found - /dhash-vips/idhash.so (LoadError)
docker build - -t temp-ruby2.5.8 --build-arg RUBY_VERSION=2.5.8 --build-arg ALPINE_VERSION=3.12 <Dockerfile

# Error relocating /dhash-vips/idhash.so: rb_int_pow: symbol not found - /dhash-vips/idhash.so (LoadError)
docker build - -t temp-ruby2.6.6 --build-arg RUBY_VERSION=2.6.6 --build-arg ALPINE_VERSION=3.12 <Dockerfile

I wanted to ask in the Mailing List but for some reason my email didn't reach it. Guy on Freenode recommended to post here.

[Nakilon (Victor Maslov)]

Nakilon (Victor Maslov) wrote:

docker build - -t temp-ruby2.3.8 --build-arg RUBY_VERSION=2.3.8 --build-arg ALPINE_VERSION=3.8 <Dockerfile

Also tried the same version of Alpine but higher Ruby -- ruby:2.4.6-alpine3.8 -- got the same

in `require_relative': Error relocating /dhash-vips/idhash.so: rb_deprecate_constant: symbol not found

that as I suppose confirms that it's not just Alpine/musl issue but something has changed in Ruby since 2.4

Meanwhile ruby:slim docker images work fine (tested 2.4.9 and 2.7.2) but they are too large...

[hsbt (Hiroshi SHIBATA)]

• Tags set to musl, alpine

[hsbt (Hiroshi SHIBATA)]

• Status changed from Open to Closed

Unfortunately, there is no active maintainer for musl or alpine platform.

I tagged them to musl. We welcome patch for them.

[mame (Yusuke Endoh)]

• Status changed from Closed to Feedback