Backport #7205: All symbols of libruby.so get LOCAL/HIDDEN visibility when build on CentOS4

• Status: Closed
• Priority: Normal
• Assignee: usa (Usaku NAKAMURA)

[cheese (Robin Lee)]

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.

[nobu (Nobuyoshi Nakada)]

Could you show config.log file?

[cheese (Robin Lee)]

• File config.log config.log added

OK, config.log is attached.

[nobu (Nobuyoshi Nakada)]

• Status changed from Open to Closed
• % Done changed from 0 to 100

This issue was solved with changeset r37296.
Robin, thank you for reporting this issue.
Your contribution to Ruby is greatly appreciated.
May Ruby be with you.

---

configure.in: no visibility option for older GCC

• configure.in (visibility_option): visibility attribute is not
  available before GCC 4, so do not use -fvisibility option in that
  case. [ruby-core:48147] [Bug #7205]

[nobu (Nobuyoshi Nakada)]

• Tracker changed from Bug to Backport
• Project changed from Ruby master to Backport193
• Category deleted (build)
• Status changed from Closed to Assigned
• Assignee set to usa (Usaku NAKAMURA)

[cheese (Robin Lee)]

OK. Tested. Ruby compiles without '-fvisibility' option with GCC 3.4

[usa (Usaku NAKAMURA)]

• Status changed from Assigned to Closed

This issue was solved with changeset r37552.
Robin, thank you for reporting this issue.
Your contribution to Ruby is greatly appreciated.
May Ruby be with you.

---

merge revision(s) 37296: [Backport #7205]

* configure.in (visibility_option): visibility attribute is not
  available before GCC 4, so do not use -fvisibility option in that
  case.  [ruby-core:48147] [Bug #7205]