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Fix build with clang

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Partially revert cdd703f's revert of c163410, as linking with clang
with --param=ssp-buffer-size=4 still fails with:
"argument unused during compilation".

(cherry picked from commit 4b91dc24d1)
This commit is contained in:
Ján Tomko 2013-07-04 11:35:59 +02:00 committed by Eric Blake
parent ab9ff9ed37
commit 15bde978da
1 changed files with 7 additions and 0 deletions
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7
m4/virt-compile-warnings.m4
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@ -182,6 +182,13 @@ 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