[Bug 872687] Re: c++ -flto always results in unresolved symbols

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On 2011-10-12T20:31:11+00:00 Matthias Klose wrote:

seen with the 2.22 branch (and the fix for pr13250 applied), works with
gold, gcc is 4.6 from the branch.


$ cat foo.cc 
int main() {}

$ g++ -B/usr/lib/gold-ld/ -Wl,--as-needed -flto foo.cc
ok

$ $ gcc -Wl,--as-needed -flto foo.cc
ok

$ $ g++ -Wl,--as-needed -flto foo.cc
/lib/i386-linux-gnu/libc.so.6: undefined reference to `_dl_argv at GLIBC_PRIVATE'
/lib/i386-linux-gnu/libc.so.6: undefined reference to `__libc_stack_end at GLIBC_2.1'
/lib/i386-linux-gnu/libc.so.6: undefined reference to `__libc_enable_secure at GLIBC_PRIVATE'
/lib/i386-linux-gnu/libc.so.6: undefined reference to `_rtld_global at GLIBC_PRIVATE'
/lib/i386-linux-gnu/libc.so.6: undefined reference to `___tls_get_addr at GLIBC_2.3'
/lib/i386-linux-gnu/libc.so.6: undefined reference to `_rtld_global_ro at GLIBC_PRIVATE'
collect2: ld returned 1 exit status

Reply at: https://bugs.launchpad.net/binutils/+bug/872687/comments/1


** Changed in: binutils
       Status: Unknown => Confirmed

** Changed in: binutils
   Importance: Unknown => Medium

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https://bugs.launchpad.net/bugs/872687

Title:
  c++ -flto always results in unresolved symbols

Status in binutils:
  Confirmed
Status in “binutils” package in Ubuntu:
  Confirmed

Bug description:
  =======main.cc =====
  int main() {}
  ===================

  c++ -flto main.cc

  results in unresolved symbol errors on latest oneiric beta

  Adding -static is a work around

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