Issue #7205 has been updated by cheese (Robin Lee).


OK. Tested. Ruby compiles without '-fvisibility' option with GCC 3.4
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Backport #7205: All symbols of libruby.so get LOCAL/HIDDEN visibility when build  on CentOS4
https://bugs.ruby-lang.org/issues/7205#change-31337

Author: cheese (Robin Lee)
Status: Assigned
Priority: Normal
Assignee: usa (Usaku NAKAMURA)
Category: 
Target version: 


Ruby 1.9.3 build fails on CentOS4 with such errors:

linking ruby
main.o(.text+0x3c): In function `main':
: undefined reference to `ruby_sysinit'
main.o(.text+0x47): In function `main':
: undefined reference to `ruby_init_stack'
main.o(.text+0x4c): In function `main':
: undefined reference to `ruby_init'
main.o(.text+0x5e): In function `main':
: undefined reference to `ruby_options'
main.o(.text+0x66): In function `main':
: undefined reference to `ruby_run_node'

I found All symbols of libruby.so get LOCAL/HIDDEN visibility. For example:
$ readelf -a libruby.so|grep ruby_sysinit
  6260: 000e01f0   561 FUNC    LOCAL  HIDDEN   10 ruby_sysinit

I am building on CentOS4 i386 with GCC:
$ gcc --version
gcc (GCC) 3.4.4 20050721 (Red Hat 3.4.4-2)


Ruby 1.8.7 build is successful.


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