Re: Question on use of relro, now, and nodlopen

[Ian Lance Taylor <iant at google dot com>]

Jeffrey Walton <noloader@gmail.com> writes:

> I'm [currently] tying binutils to gcc because its difficult to
> determine past binutil version numbers.

I don't understand how the one follows from the other.  The binutils and
gcc are separate projects.


> For example, I believe -relro
> and -now originated around 6/2004 from ld/ChangeLog_2004. The log does
> not state what the version is/was in effect; there does not appear to
> be a Binutils Timeline (similar to http://gcc.gnu.org/releases.html);
> and the FTP archives does not list a binutils dated near around
> (http://ftp.gnu.org/gnu/binutils/).
>
> Would you (or anyone else) have a suggestion? I seem to have reached
> my sluething limit.

The -z now option was added in July 2000, at the same time as -z
nodlopen.  By the way, I suspect that both options were added for
compatibility with the Solaris linker.

Support for -z relro was added in revision 1.113 of elf32.em in May
2004.  The CVS tag history shows that the first binutils release
including -z relro was 2.16.

Ian