cmake: skip relro/now and ssp hardening flags on Emscripten

wasm-ld only warns about unknown -z values, so the -Wl,-z,relro/now
link probes false-positive under emcc and then warn on every link.
The stack protector probe also passes (the probe program has no
protected frame) but real objects fail to link since Emscripten's
libc provides no __stack_chk_guard/__stack_chk_fail; it has its own
stack checks. -fcf-protection already fails its probe cleanly there.

0 files changed, 0 insertions, 0 deletions