From: "mame (Yusuke Endoh)" <mame@...>
Date: 2012-03-25T16:35:35+09:00
Subject: [ruby-core:43642] [ruby-trunk - Feature #4946][Assigned] Building libruby-static.a with option nodynamic and --with-static-link-ext doesn't disable dlopen


Issue #4946 has been updated by mame (Yusuke Endoh).

Status changed from Open to Assigned
Assignee set to nobu (Nobuyoshi Nakada)
Priority changed from Normal to Low


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Feature #4946: Building libruby-static.a with option nodynamic and --with-static-link-ext doesn't disable dlopen
https://bugs.ruby-lang.org/issues/4946#change-25142

Author: regularfry (Alex Young)
Status: Assigned
Priority: Low
Assignee: nobu (Nobuyoshi Nakada)
Category: build
Target version: 2.0.0


I uncomment option nodynamic in ext/Setup and run ./configure --with-static-link-ext, then make libruby-static.a

I then compile this:

  /* trial.c */
  #include "ruby.h"
  int main(){
    ruby_init();
    return 0;
  }

like so:

  gcc -c trial.c -o trial.o -Iruby-1.9.2-p180/include -Iruby-1.9.2-p180/.ext/include/i686-linux
  gcc -static trial.o -Lruby-1.9.2-p180 -lruby-static -lpthread -lrt -ldl -lcrypt -lm -o trial

And I see this warning:

  ruby-1.9.2-p180/libruby-static.a(dln.o): In function `dln_load':
  /home/alex/projects/scratch/ruby/ruby-1.9.2-p180/dln.c:1276: warning: Using 'dlopen' in statically linked applications requires at runtime the shared libraries from the glibc version used for linking

I specifically do not want any run-time code loading capability, but I can see no documented way to disable dlopen; is there any way to silence this warning?


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