On 2013-02-06 06:49, Stefan Hajnoczi wrote:
$ echo "int main() {return 0;}" | gcc -D_FORTIFY_SOURCE=2 -x c -
<command-line>:0:0: warning: "_FORTIFY_SOURCE" redefined [enabled by default]
<stdin>:1:0: note: this is the location of the previous definition
in which case we must undefine it. However, if the _FORTIFY_SOURCE is
defined by environment, I think we should not override it. So maybe need
a different approach. Anyway, with current state I cannot compile. I am using
gcc version 4.7.2 (Gentoo 4.7.2 p1.3, pie-0.5.5)
It would be nice to fix this for QEMU 1.4 but my gcc FORTIFY_SOURCE foo
is not strong enough to know what the best approach is here.
Using -U -D is just fine to override something that the distro turned on
by default.
r~
