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(a)redhat.com&gt; --- Pushing under the build-breaker rule. * .gnulib a363f4e...f40e61e (41): .gnulib | 2 +- m4/virt-compile-warnings.m4 | 22 ---------------------- 2 files changed, 1 insertion(+), 23 deletions(-) diff --git a/.gnulib b/.gnulib index a363f4e..f40e61e 160000 --- a/.gnulib +++ b/.gnulib @@ -1 +1 @@ -Subproject commit a363f4ed4a0e69187c97686ac44502c49c7f4b3d +Subproject commit f40e61ea0c4940b027aade7dd48948aa93f133a4 diff --git a/m4/virt-compile-warnings.m4 b/m4/virt-compile-warnings.m4 index ce4e244..c6794b7 100644 --- a/m4/virt-compile-warnings.m4 +++ b/m4/virt-compile-warnings.m4 @@ -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" ]) -- 1.8.1.4