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Fix build with clang
Partially revert cdd703f's revert of c163410
, as linking with clang
with --param=ssp-buffer-size=4 still fails with:
"argument unused during compilation".
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@ -185,6 +185,13 @@ AC_DEFUN([LIBVIRT_COMPILE_WARNINGS],[
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dnl gl_WARN_ADD([-fstack-protector])
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gl_WARN_ADD([-fstack-protector-all])
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gl_WARN_ADD([--param=ssp-buffer-size=4])
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dnl Even though it supports it, clang complains about
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dnl use of --param=ssp-buffer-size=4 unless used with
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dnl the -c arg. It doesn't like it when used with args
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dnl that just link together .o files. Unfortunately
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dnl we can't avoid that with automake, so we must turn
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dnl off the following clang specific warning
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gl_WARN_ADD([-Wno-unused-command-line-argument])
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;;
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*-*-freebsd*)
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dnl FreeBSD ships old gcc 4.2.1 which doesn't handle
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