On 23/10/20 22:06, Daniele Buono wrote: > This patch allows to compile QEMU with link-time optimization (LTO). > Compilation with LTO is handled directly by meson. This patch adds checks > in configure to make sure the toolchain supports LTO. > > Currently, allow LTO only with clang, since I have found a couple of issues > with gcc-based LTO. > > In case fuzzing is enabled, automatically switch to llvm's linker (lld). > The standard bfd linker has a bug where function wrapping (used by the fuzz* > targets) is used in conjunction with LTO. > > Tested with all major versions of clang from 6 to 12 > > Signed-off-by: Daniele Buono <dbu...@linux.vnet.ibm.com>
What are the problems like if you have GCC or you ar/linker are not up to the job? I wouldn't mind omitting the tests since this has to be enabled explicitly by the user. Paolo
