[libvirt] [PATCH] build: make broken -Wlogical-op test be gcc-only

[Daniel P. Berrange]

On Wed, Dec 19, 2012 at 12:24:39PM -0700, Eric Blake wrote:
> Commit 8b8fcdea introduced a check for broken gcc -Wlogical-op,
> but did not guard the check against non-gcc compilers, which might
> lead to spurious failures when another compiler encounters an
> unknown pragma.  Additionally, all of our compiler warning logic
> should belong in a single file, and use cache variables to allow
> overriding the decision at configure time if necessary.
> 
> * configure.ac (BROKEN_GCC_WLOGICALOP): Move...
> * m4/virt-compile-warnings.m4 (LIBVIRT_COMPILE_WARNINGS): ...here,
> and update to modern autoconf idioms.
> ---
> 
> Fixes the issues mentioned here:
> https://www.redhat.com/archives/libvir-list/2012-December/msg01197.html
> https://www.redhat.com/archives/libvir-list/2012-December/msg01211.html
> 
>  configure.ac                | 23 -----------------------
>  m4/virt-compile-warnings.m4 | 22 ++++++++++++++++++++++
>  2 files changed, 22 insertions(+), 23 deletions(-)

ACK


Daniel
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