Add safe compilation options

Add two options when building rust: strip and stack protector.
If set `strip = true`, symbols will be stripped using `-Cstrip=symbols`.
Also can set `stack-protector` and stack protectors will be used.

config.example.toml

@@ -600,6 +600,15 @@ change-id = 116881
 # desired in distributions, for example.
 #rpath = true
 
+# Indicates whether symbols should be stripped using `-Cstrip=symbols`.
+#strip = false
+
+# Indicates whether stack protectors should be used
+# via the unstable option `-Zstack-protector`.
+# Valid options are : `none`(default),`basic`,`strong`, or `all`.
+# But `strong` and `basic` options may be buggy and are not suggested here.(rust-lang/rust #114903)
+#stack-protector = "none"
+
 # Prints each test name as it is executed, to help debug issues in the test harness itself.
 #verbose-tests = false
 

src/bootstrap/src/core/builder.rs

@@ -1669,6 +1669,16 @@ impl<'a> Builder<'a> {
             }
         }
 
+        cargo.env(profile_var("STRIP"), self.config.rust_strip.to_string());
+
+        match self.config.rust_stack_protector.as_str() {
+            "none" => rustflags.arg("-Zstack-protector=none"),
+            "basic" => rustflags.arg("-Zstack-protector=basic"),
+            "strong" => rustflags.arg("-Zstack-protector=strong"),
+            "all" => rustflags.arg("-Zstack-protector=all"),
+            other => unreachable!("{:?} is not recognized as valid stack protectors", other),
+        };
+
         if let Some(host_linker) = self.linker(compiler.host) {
             hostflags.arg(format!("-Clinker={}", host_linker.display()));
         }

src/bootstrap/src/core/config/config.rs

@@ -222,6 +222,8 @@ pub struct Config {
     pub rust_debuginfo_level_tests: DebuginfoLevel,
     pub rust_split_debuginfo: SplitDebuginfo,
     pub rust_rpath: bool,
+    pub rust_strip: bool,
+    pub rust_stack_protector: String,
     pub rustc_parallel: bool,
     pub rustc_default_linker: Option<String>,
     pub rust_optimize_tests: bool,
@@ -1000,6 +1002,8 @@ define_config! {
         description: Option<String> = "description",
         musl_root: Option<String> = "musl-root",
         rpath: Option<bool> = "rpath",
+        strip: Option<bool> = "strip",
+        stack_protector: Option<String> = "stack-protector",
         verbose_tests: Option<bool> = "verbose-tests",
         optimize_tests: Option<bool> = "optimize-tests",
         codegen_tests: Option<bool> = "codegen-tests",
@@ -1067,6 +1071,8 @@ impl Config {
         config.docs = true;
         config.docs_minification = true;
         config.rust_rpath = true;
+        config.rust_strip = false;
+        config.rust_stack_protector = "none".to_string();
         config.channel = "dev".to_string();
         config.codegen_tests = true;
         config.rust_dist_src = true;
@@ -1420,6 +1426,8 @@ impl Config {
             set(&mut config.rust_optimize_tests, rust.optimize_tests);
             set(&mut config.codegen_tests, rust.codegen_tests);
             set(&mut config.rust_rpath, rust.rpath);
+            set(&mut config.rust_strip, rust.strip);
+            set(&mut config.rust_stack_protector, rust.stack_protector);
             set(&mut config.jemalloc, rust.jemalloc);
             set(&mut config.test_compare_mode, rust.test_compare_mode);
             set(&mut config.backtrace, rust.backtrace);