On Thu, Sep 09, 2010 at 06:51:50PM +0000, Kai Wang wrote:
> Author: kaiw
> Date: Thu Sep  9 18:51:50 2010
> New Revision: 212373
> URL: http://svn.freebsd.org/changeset/base/212373
> 
> Log:
>   libelf is overly strict about the type and alignment of Elf_Data
>   objects inside one ELF section, which prevents the creation of a ELF
>   section with mixed data types. For example, gcc LTO use libelf to
>   create a .gnu_lto_XXX section that contains integers and a string
>   table, which doesn't work with our libelf implementation.
>   
>   The changes made in this commit include:
>   * Allow Elf_Data type to be different than section type.
>   * Relax Elf_Data alignment check.
>   * Align each Elf_Data by their own alignment instead of section alignment.
>   
>   MFC after:   1 month
> 
> Modified:
>   head/lib/libelf/elf_update.c
> 

libelf still doesn't work with GCC.  All testsuite failures
are of the form

collect2: lto-wrapper returned 1 exit status
compiler exited with status 1
output is:
lto1: error: could not open ELF file: Request error: invalid ELF_C_* argument
lto-wrapper: /usr/home/sgk/gcc/obj4x/gcc/testsuite/gfortran/../../gfortran 
returned 1 exit status
collect2: lto-wrapper returned 1 exit status

-- 
Steve
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