I'm trying to install Ruby 3.0.6 using rbenv on macOS 15.1.1 (ARM) with OpenSSL 3, but the build keeps failing.

I ran:

RUBY_CONFIGURE_OPTS="--with-openssl-dir=/opt/homebrew/opt/openssl@3" rbenv install 3.0.6

But it fails with multiple errors, including:

fatal error: too many errors emitted, stopping now [-ferror-limit=]
compiling new.c
installing default bigdecimal libraries
20 errors generated.
make[2]: *** [bigdecimal.o] Error 1
make[1]: *** [ext/bigdecimal/all] Error 2
make: *** [build-ext] Error 2
external command failed with status 2

I also see warnings about duplicate libraries:

ld: warning: ignoring duplicate libraries: '-lruby.3.0'

What I've Tried:

1. Updated Xcode CLI tools

   xcode-select --install
   sudo xcodebuild -runFirstLaunch
   

2. Checked Homebrew & Dependencies

   brew update && brew upgrade
   brew install readline libyaml gmp openssl@3
   

3. Set Compiler Flags Before Building

   export RUBY_CFLAGS="-Wno-error=implicit-function-declaration -Wno-error=deprecated-non-prototype"
   export LDFLAGS="-L/opt/homebrew/opt/openssl@3/lib"
   export CPPFLAGS="-I/opt/homebrew/opt/openssl@3/include"
   export PKG_CONFIG_PATH="/opt/homebrew/opt/openssl@3/lib/pkgconfig"
   

4. Manually Cleaned & Reinstalled Ruby

   rbenv uninstall 3.0.6
   rm -rf ~/.rbenv/versions/3.0.6
   rm -rf /var/folders/*/*/*/ruby-build*
   rbenv install 3.0.6
   

System Info:

• macOS: 15.1.1 (ARM)
• Ruby Version: Trying to install 3.0.6
• rbenv Version: Latest
• Homebrew OpenSSL Version: 3.4.1

What else can I try to get this working?