GCC Bugzilla Bug 18553

When building with both -ffunction-sections and
-g, the compiler outputs an invalid warning for
each compiled file:

  drv/timer.c:1: warning: -ffunction-sections may affect debugging on some targets

The code printing this is here:

--- gcc/toplev.c ---
#ifndef OBJECT_FORMAT_ELF
  if (flag_function_sections && write_symbols != NO_DEBUG)
    warning ("-ffunction-sections may affect debugging on some targets");
#endif
--- gcc/toplev.c ---

A possible fix could be adding elfos.h to the tm_file
list for the avr target in config.gcc, which may also
lead to simplifications in some parts of config/avr.h.

*** Bug 18552 has been marked as a duplicate of this bug. ***

Confirmed.

Subject: Bug 18553

Author: aesok
Date: Mon Nov 20 18:16:21 2006
New Revision: 119019

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=119019
Log:
        PR target/18553
        PR target/29449
        * config/avr/avr.h (OBJECT_FORMAT_ELF): Define.

        * config/avr/avr.h (DWARF2_DEBUGGING_INFO): Define.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/avr/avr.h

Subject: Bug 18553

Author: aesok
Date: Mon Nov 20 18:23:13 2006
New Revision: 119020

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=119020
Log:
        PR target/18553
        PR target/29449
        * config/avr/avr.h (OBJECT_FORMAT_ELF): Define.

        * config/avr/avr.h (DWARF2_DEBUGGING_INFO): Define.

Modified:
    branches/gcc-4_2-branch/gcc/ChangeLog
    branches/gcc-4_2-branch/gcc/config/avr/avr.h

Subject: Bug 18553

Author: aesok
Date: Mon Nov 20 18:29:21 2006
New Revision: 119021

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=119021
Log:
        PR target/18553
        PR target/29449
        * config/avr/avr.h (OBJECT_FORMAT_ELF): Define.

        * config/avr/avr.h (DWARF2_DEBUGGING_INFO): Define.

Modified:
    branches/gcc-4_1-branch/gcc/ChangeLog
    branches/gcc-4_1-branch/gcc/config/avr/avr.h

Fixed in trunk, 4.2 and 4.1.