Le 02/06/10 05:24, Yaakov (Cygwin/X) a écrit :
On Sat, 15 May 2010 09:07:49 +0200
Bart Van Assche <bvanass...@acm.org> wrote:
This behavior has been observed with libtool version 2.2.6.
Bug confirmed. When code is compiled with -fstack-protector{,-all},
GCC "emits extra code to check for buffer overflows, such as stack
smashing attacks". This extra code uses symbols from libssp, and
therefore (at least) Cygwin's GCC specs contain:
*link_ssp:
%{fstack-protector|fstack-protector-all:-lssp_nonshared -lssp}
Therefore, when libtool fails to pass -fstack-protector{,-all} at link
stage, the link fails.
Patch attached. (Yes, I have a copyright assignment on file.)
Yaakov
Cygwin/X
I've done some limited testing of this patch on a SunOS distro with
pkgsrc, and it certainly helps a number of cases since it is gcc that
generates the necessary '-lssp_nonshared -lssp' libs for linking (at
least in absence of '-nostdlib').
Please include in the upcoming version.
