rewrite and slightly rename issue-68794-textrel-on-minimal-lib

Author: Oneirical

src/tools/tidy/src/allowed_run_make_makefiles.txt

@@ -83,7 +83,6 @@ run-make/issue-37839/Makefile
 run-make/issue-40535/Makefile
 run-make/issue-47384/Makefile
 run-make/issue-47551/Makefile
-run-make/issue-68794-textrel-on-minimal-lib/Makefile
 run-make/issue-69368/Makefile
 run-make/issue-83045/Makefile
 run-make/issue-83112-incr-test-moved-file/Makefile

tests/run-make/issue-68794-textrel-on-minimal-lib/Makefile

@@ -0,0 +1,30 @@
+// Verify that no text relocations are accidentally introduced by linking a
+// minimal rust staticlib.
+// The test links a rust static library into a shared library, and checks that
+// the linker doesn't have to flag the resulting file as containing TEXTRELs.
+// This bug otherwise breaks Android builds, which forbid TEXTRELs.
+// See https://github.com/rust-lang/rust/issues/68794
+
+//@ ignore-cross-compile
+//FIXME(Oneirical): check that it works on more than just only-linux
+
+use run_make_support::{
+    cc, dynamic_lib_name, extra_c_flags, extra_cxx_flags, llvm_readobj, rustc, static_lib_name,
+};
+
+fn main() {
+    rustc().input("foo.rs").run();
+    cc().input("bar.c")
+        .input(static_lib_name("foo"))
+        .out_exe(&dynamic_lib_name("bar"))
+        .arg("-fPIC")
+        .arg("-shared")
+        .args(&extra_c_flags())
+        .args(&extra_cxx_flags())
+        .run();
+    llvm_readobj()
+        .input(dynamic_lib_name("bar"))
+        .arg("--dynamic")
+        .run()
+        .assert_stdout_not_contains("TEXTREL");
+}