pg_ext.so:未定义符号:rb_thread_select [英] pg_ext.so: undefined symbol: rb_thread_select

问题描述

bash-4.2# rake db:create
/opt/rubystack-2.3.1-0/ruby/bin/.ruby.bin: symbol lookup error: /opt/rubystack-2.3.1-0/ruby/lib/ruby/gems/2.3.0/gems/pg-0.18.4/lib/pg_ext.so: undefined symbol: rb_thread_select
bash-4.2# ruby -v
ruby 2.3.1p112 (2016-04-26 revision 54768) [x86_64-linux]
bash-4.2# rails -v
Rails 4.2.6
bash-4.2# gem list pg

*** LOCAL GEMS ***



  pg (0.18.4, 0.15.1)

出什么问题了?这是bitnami的红宝石堆栈.

what's the problem? it's bitnami's ruby stack.

注意::这不是pg版本的错误吗?请检查我的日志！ Ruby版本2.3.1，pg版本0.18.4.

NOTE: It's NOT pg version's bug? Please check my log! Ruby version 2.3.1, pg version 0.18.4.

推荐答案

自Ruby 1.9.3 起，不推荐使用rb_thread_select函数.从Ruby 2.2 开始，它已由rb_thread_fd_select函数取代:

The rb_thread_select function has been deprecated since Ruby 1.9.3. It was replaced by the rb_thread_fd_select function as of Ruby 2.2:

VA  VD  VR
old 193 22  rb_thread_select -> rb_thread_fd_select

但是，pg宝石自从使用正确的函数版本 0.15 .这是 pg_connection.c @ e5cb1df 的相关部分:

However, the pg gem has been using the correct function since version 0.15. Here's the relevant section of pg_connection.c @ e5cb1df:

#ifndef HAVE_RB_THREAD_FD_SELECT
#define rb_fdset_t fd_set
#define rb_fd_init(f)
#define rb_fd_zero(f)  FD_ZERO(f)
#define rb_fd_set(n, f)  FD_SET(n, f)
#define rb_fd_term(f)
#define rb_thread_fd_select rb_thread_select
#endif

这些指令在编译时进行评估，因此C扩展的共享库必须编译不正确.

These directives are evaluated at compile time, so the C extension's shared object must have been compiled incorrectly.

在构建pg_ext.so时，必须未定义HAVE_RB_THREAD_FD_SELECT宏.这可能是因为:

The HAVE_RB_THREAD_FD_SELECT macro must not have been defined when pg_ext.so was built. This could have happened because:

• 它是针对没有rb_thread_fd_select
的Ruby构建的
• 在构建过程中配置不正确

• It was built against a Ruby that did not have rb_thread_fd_select
• It was incorrectly configured during the build process

参考:

• 删除不推荐使用的定义
• CAPI过时的定义
• 在Ruby 1.9上使用rb_thread_fd_select()以避免对rb_thread_select()的弃用警告
• ruby​​-pg/ext/pg_connection.c

• Remove deprecated definitions
• CAPI obsolete definitions
• Make use of rb_thread_fd_select() on Ruby 1.9, to avoid deprecation warnings on rb_thread_select().
• ruby-pg/ext/pg_connection.c

这篇关于pg_ext.so:未定义符号:rb_thread_select的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！