termux-packages/packages/rust/0009-always-export-emutls.patch

--- a/compiler/rustc_codegen_ssa/src/back/linker.rs
+++ b/compiler/rustc_codegen_ssa/src/back/linker.rs
@@ -17,7 +17,7 @@
 use rustc_middle::ty::TyCtxt;
 use rustc_session::Session;
 use rustc_session::config::{self, CrateType, DebugInfo, LinkerPluginLto, Lto, OptLevel, Strip};
-use rustc_target::spec::{Cc, LinkOutputKind, LinkerFlavor, Lld};
+use rustc_target::spec::{Cc, LinkOutputKind, LinkerFlavor, Lld, TlsModel};
 use tracing::{debug, warn};
 
 use super::command::Command;
@@ -869,6 +869,14 @@
                         writeln!(f, "    {sym};")?;
                     }
                 }
+                if matches!(self.sess.target.tls_model, TlsModel::Emulated) {
+                    // always export the symbol from compiler-builtins
+                    if symbols.is_empty() {
+                        writeln!(f, "  global:")?;
+                    }
+                    debug!("    __emutls_get_address;");
+                    writeln!(f, "    __emutls_get_address;")?;
+                }
                 writeln!(f, "\n  local:\n    *;\n}};")?;
             };
             if let Err(error) = res {
@@ -876,6 +884,13 @@
             }
             if self.sess.target.is_like_solaris {
                 self.link_arg("-M").link_arg(path);
+            } else if matches!(self.sess.target.tls_model, TlsModel::Emulated) {
+                // https://github.com/rust-lang/rustc_codegen_cranelift/issues/1296
+                // nightly rustc_codegen_cranelift does not support emutls
+                // so --undefined-version is used
+                let mut arg = OsString::from("--version-script=");
+                arg.push(path);
+                self.link_arg(arg).link_arg("--undefined-version");
             } else {
                 let mut arg = OsString::from("--version-script=");
                 arg.push(path);