Link libssp_nonshared.a on all musl targets

Author: smaeul

compiler/rustc_target/src/spec/linux_musl_base.rs

@@ -1,10 +1,13 @@
-use crate::spec::TargetOptions;
+use crate::spec::{LinkerFlavor, TargetOptions};
 
 pub fn opts() -> TargetOptions {
     let mut base = super::linux_base::opts();
 
     base.env = "musl".into();
 
+    // libssp_nonshared.a is needed for __stack_chk_fail_local when using libc.so
+    base.post_link_args.insert(LinkerFlavor::Gcc, vec!["-lssp_nonshared".into()]);
+
     // These targets statically link libc by default
     base.crt_static_default = true;