[libvirt] [PATCHv2 2/6] build: silence some compiler warnings from gnulib
Daniel P. Berrange
berrange at redhat.com
Thu Jan 19 18:50:12 UTC 2012
On Thu, Jan 19, 2012 at 11:44:42AM -0700, Eric Blake wrote:
> Gnulib claims that there are some classes of warnings that are
> worth enabling during development, but where silencing those
> warnings causes code bloat that is not necessary in an optimized
> build. The code bloat to silence the warnings is only enabled
> by -Dlint. Follow the lead of coreutils in setting up -Dlint
> whenever full warnings are requested.
>
> * m4/virt-compile-warnings.m4 (LIBVIRT_COMPILE_WARNINGS): Add
> -Dlint, and move _FORTIFY_SOURCE to config.h instead of CFLAGS.
> ---
> m4/virt-compile-warnings.m4 | 7 ++++++-
> 1 files changed, 6 insertions(+), 1 deletions(-)
>
> diff --git a/m4/virt-compile-warnings.m4 b/m4/virt-compile-warnings.m4
> index ba388aa..3a428c3 100644
> --- a/m4/virt-compile-warnings.m4
> +++ b/m4/virt-compile-warnings.m4
> @@ -100,8 +100,13 @@ AC_DEFUN([LIBVIRT_COMPILE_WARNINGS],[
> gl_WARN_ADD([-Wframe-larger-than=4096])
> dnl gl_WARN_ADD([-Wframe-larger-than=256])
>
> + # Silence certain warnings in gnulib, and use improved glibc headers
> + AC_DEFINE([lint], [1],
> + [Define to 1 if the compiler is checking for lint.])
> + AC_DEFINE([_FORTIFY_SOURCE], [2],
> + [enable compile-time and run-time bounds-checking, and some warnings])
> +
> # Extra special flags
> - gl_WARN_ADD([-Wp,-D_FORTIFY_SOURCE=2])
> dnl -fstack-protector stuff passes gl_WARN_ADD with gcc
> dnl on Mingw32, but fails when actually used
> case $host in
ACK
Daniel
--
|: http://berrange.com -o- http://www.flickr.com/photos/dberrange/ :|
|: http://libvirt.org -o- http://virt-manager.org :|
|: http://autobuild.org -o- http://search.cpan.org/~danberr/ :|
|: http://entangle-photo.org -o- http://live.gnome.org/gtk-vnc :|
More information about the libvir-list
mailing list