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maint: update to latest gnulib

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The latest mingw headers on Fedora 19 fail to build with gnulib
without an update.

Meanwhile, now that upstream gnulib has better handling of -W
probing for clang, we can drop some of our own solutions in
favor of upstream; thus this reverts commit c1634100, "Correctly
detect warning flags with clang".

* .gnulib: Update to latest, for mingw and clang.

Signed-off-by: Eric Blake <eblake@redhat.com>
(cherry picked from commit cdd703f4758facf37bda891deacd561816926e75)
This commit is contained in:
Eric Blake 2013-07-02 17:26:42 -06:00
parent cafcec2f5b
commit 47e2fbb559
2 changed files with 1 additions and 23 deletions
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2
.gnulib

@ -1 +1 @@
Subproject commit a363f4ed4a0e69187c97686ac44502c49c7f4b3d
Subproject commit f40e61ea0c4940b027aade7dd48948aa93f133a4

22
m4/virt-compile-warnings.m4
View File

@ -60,18 +60,6 @@ AC_DEFUN([LIBVIRT_COMPILE_WARNINGS],[
# gcc 4.4.6 complains this is C++ only; gcc 4.7.0 implies this from -Wall
dontwarn="$dontwarn -Wenum-compare"
# clang rather horribly ignores unknown warning flags by
# default. Thus to get gl_WARN_ADD to reliably detect
# flags, we need to set '-Werror -Wunknown-warning-option'
# in CFLAGS while probing support
WARN_CFLAGS=
orig_CFLAGS="$CFLAGS"
gl_WARN_ADD([-Wunknown-warning-option])
if test -n "$WARN_CFLAGS" ; then
WARN_CFLAGS=
CFLAGS="-Werror -Wunknown-warning-option $CFLAGS"
fi
# gcc 4.2 treats attribute(format) as an implicit attribute(nonnull),
# which triggers spurious warnings for our usage
AC_CACHE_CHECK([whether gcc -Wformat allows NULL strings],
@ -197,13 +185,6 @@ AC_DEFUN([LIBVIRT_COMPILE_WARNINGS],[
dnl gl_WARN_ADD([-fstack-protector])
gl_WARN_ADD([-fstack-protector-all])
gl_WARN_ADD([--param=ssp-buffer-size=4])
dnl Even though it supports it, clang complains about
dnl use of --param=ssp-buffer-size=4 unless used with
dnl the -c arg. It doesn't like it when used with args
dnl that just link together .o files. Unfortunately
dnl we can't avoid that with automake, so we must turn
dnl off the following clang specific warning
gl_WARN_ADD([-Wno-unused-command-line-argument])
;;
*-*-freebsd*)
dnl FreeBSD ships old gcc 4.2.1 which doesn't handle
@ -244,7 +225,4 @@ AC_DEFUN([LIBVIRT_COMPILE_WARNINGS],[
AC_DEFINE_UNQUOTED([BROKEN_GCC_WLOGICALOP], 1,
[Define to 1 if gcc -Wlogical-op reports false positives on strchr])
fi
# Remove stuff we set for clang
CFLAGS="$orig_CFLAGS"
])