Rollup merge of #126500 - Oneirical:test-for-the-holy-grail, r=jieyouxu

Migrate `error-found-staticlib-instead-crate`, `output-filename-conflicts-with-directory`, `output-filename-overwrites-input`, `native-link-modifier-verbatim-rustc` and `native-link-verbatim-linker` `run-make` tests to `rmake.rs` format

Part of #121876 and the associated [Google Summer of Code project](https://blog.rust-lang.org/2024/05/01/gsoc-2024-selected-projects.html).

src/tools/tidy/src/allowed_run_make_makefiles.txt

@@ -35,7 +35,6 @@ run-make/emit-shared-files/Makefile
 run-make/emit-stack-sizes/Makefile
 run-make/emit-to-stdout/Makefile
 run-make/env-dep-info/Makefile
-run-make/error-found-staticlib-instead-crate/Makefile
 run-make/error-writing-dependencies/Makefile
 run-make/export-executable-symbols/Makefile
 run-make/extern-diff-internal-name/Makefile
@@ -132,8 +131,6 @@ run-make/missing-crate-dependency/Makefile
 run-make/mixing-libs/Makefile
 run-make/msvc-opt-minsize/Makefile
 run-make/native-link-modifier-bundle/Makefile
-run-make/native-link-modifier-verbatim-linker/Makefile
-run-make/native-link-modifier-verbatim-rustc/Makefile
 run-make/native-link-modifier-whole-archive/Makefile
 run-make/no-alloc-shim/Makefile
 run-make/no-builtins-attribute/Makefile
@@ -142,8 +139,6 @@ run-make/no-duplicate-libs/Makefile
 run-make/obey-crate-type-flag/Makefile
 run-make/optimization-remarks-dir-pgo/Makefile
 run-make/optimization-remarks-dir/Makefile
-run-make/output-filename-conflicts-with-directory/Makefile
-run-make/output-filename-overwrites-input/Makefile
 run-make/output-type-permutations/Makefile
 run-make/override-aliased-flags/Makefile
 run-make/overwrite-input/Makefile

tests/run-make/error-found-staticlib-instead-crate/Makefile

@@ -1,5 +0,0 @@
-include ../tools.mk
-
-all:
-	$(RUSTC) foo.rs --crate-type staticlib
-	$(RUSTC) bar.rs 2>&1 | $(CGREP) "found staticlib"

tests/run-make/error-found-staticlib-instead-crate/rmake.rs

@@ -0,0 +1,11 @@
+// When rustc is looking for a crate but is given a staticlib instead,
+// the error message should be helpful and indicate precisely the cause
+// of the compilation failure.
+// See https://github.com/rust-lang/rust/pull/21978
+
+use run_make_support::rustc;
+
+fn main() {
+    rustc().input("foo.rs").crate_type("staticlib").run();
+    rustc().input("bar.rs").run_fail().assert_stderr_contains("found staticlib");
+}

tests/run-make/native-link-modifier-verbatim-linker/Makefile

@@ -1,15 +0,0 @@
-# ignore-cross-compile
-# ignore-apple
-
-include ../tools.mk
-
-all:
-	# Verbatim allows specify precise name.
-	$(RUSTC) local_native_dep.rs --crate-type=staticlib -o $(TMPDIR)/local_some_strange_name.ext
-	$(RUSTC) main.rs -l static:+verbatim=local_some_strange_name.ext
-
-	# With verbatim any other name cannot be used (local).
-	$(RUSTC) local_native_dep.rs --crate-type=staticlib -o $(TMPDIR)/liblocal_native_dep.a
-	$(RUSTC) local_native_dep.rs --crate-type=staticlib -o $(TMPDIR)/local_native_dep.a
-	$(RUSTC) local_native_dep.rs --crate-type=staticlib -o $(TMPDIR)/local_native_dep.lib
-	$(RUSTC) main.rs -l static:+verbatim=local_native_dep 2>&1 | $(CGREP) "local_native_dep"

tests/run-make/native-link-modifier-verbatim-linker/rmake.rs

@@ -0,0 +1,41 @@
+// `verbatim` is a native link modifier that forces rustc to only accept libraries with
+// a specified name. This test checks that this modifier works as intended.
+// This test is the same as native-link-modifier-rustc, but without rlibs.
+// See https://github.com/rust-lang/rust/issues/99425
+
+//@ ignore-apple
+// Reason: linking fails due to the unusual ".ext" staticlib name.
+
+use run_make_support::rustc;
+
+fn main() {
+    // Verbatim allows for the specification of a precise name
+    // - in this case, the unconventional ".ext" extension.
+    rustc()
+        .input("local_native_dep.rs")
+        .crate_type("staticlib")
+        .output("local_some_strange_name.ext")
+        .run();
+    rustc().input("main.rs").arg("-lstatic:+verbatim=local_some_strange_name.ext").run();
+
+    // This section voluntarily avoids using static_lib_name helpers to be verbatim.
+    // With verbatim, even these common library names are refused
+    // - it wants local_native_dep without
+    // any file extensions.
+    rustc()
+        .input("local_native_dep.rs")
+        .crate_type("staticlib")
+        .output("liblocal_native_dep.a")
+        .run();
+    rustc().input("local_native_dep.rs").crate_type("staticlib").output("local_native_dep.a").run();
+    rustc()
+        .input("local_native_dep.rs")
+        .crate_type("staticlib")
+        .output("local_native_dep.lib")
+        .run();
+    rustc()
+        .input("main.rs")
+        .arg("-lstatic:+verbatim=local_native_dep")
+        .run_fail()
+        .assert_stderr_contains("local_native_dep");
+}

tests/run-make/native-link-modifier-verbatim-rustc/Makefile

@@ -1,12 +0,0 @@
-include ../tools.mk
-
-all:
-	# Verbatim allows specify precise name.
-	$(RUSTC) upstream_native_dep.rs --crate-type=staticlib -o $(TMPDIR)/upstream_some_strange_name.ext
-	$(RUSTC) rust_dep.rs -l static:+verbatim=upstream_some_strange_name.ext --crate-type rlib
-
-	# With verbatim any other name cannot be used (upstream).
-	$(RUSTC) upstream_native_dep.rs --crate-type=staticlib -o $(TMPDIR)/libupstream_native_dep.a
-	$(RUSTC) upstream_native_dep.rs --crate-type=staticlib -o $(TMPDIR)/upstream_native_dep.a
-	$(RUSTC) upstream_native_dep.rs --crate-type=staticlib -o $(TMPDIR)/upstream_native_dep.lib
-	$(RUSTC) rust_dep.rs -l static:+verbatim=upstream_native_dep --crate-type rlib 2>&1 | $(CGREP) "upstream_native_dep"

tests/run-make/native-link-modifier-verbatim-rustc/rmake.rs

@@ -0,0 +1,47 @@
+// `verbatim` is a native link modifier that forces rustc to only accept libraries with
+// a specified name. This test checks that this modifier works as intended.
+// This test is the same as native-link-modifier-linker, but with rlibs.
+// See https://github.com/rust-lang/rust/issues/99425
+
+use run_make_support::rustc;
+
+fn main() {
+    // Verbatim allows for the specification of a precise name
+    // - in this case, the unconventional ".ext" extension.
+    rustc()
+        .input("upstream_native_dep.rs")
+        .crate_type("staticlib")
+        .output("upstream_some_strange_name.ext")
+        .run();
+    rustc()
+        .input("rust_dep.rs")
+        .crate_type("rlib")
+        .arg("-lstatic:+verbatim=upstream_some_strange_name.ext")
+        .run();
+
+    // This section voluntarily avoids using static_lib_name helpers to be verbatim.
+    // With verbatim, even these common library names are refused
+    // - it wants upstream_native_dep without
+    // any file extensions.
+    rustc()
+        .input("upstream_native_dep.rs")
+        .crate_type("staticlib")
+        .output("libupstream_native_dep.a")
+        .run();
+    rustc()
+        .input("upstream_native_dep.rs")
+        .crate_type("staticlib")
+        .output("upstream_native_dep.a")
+        .run();
+    rustc()
+        .input("upstream_native_dep.rs")
+        .crate_type("staticlib")
+        .output("upstream_native_dep.lib")
+        .run();
+    rustc()
+        .input("rust_dep.rs")
+        .crate_type("rlib")
+        .arg("-lstatic:+verbatim=upstream_native_dep")
+        .run_fail()
+        .assert_stderr_contains("upstream_native_dep");
+}

tests/run-make/output-filename-conflicts-with-directory/Makefile

@@ -1,7 +0,0 @@
-include ../tools.mk
-
-all:
-	cp foo.rs $(TMPDIR)/foo.rs
-	mkdir $(TMPDIR)/foo
-	$(RUSTC) $(TMPDIR)/foo.rs -o $(TMPDIR)/foo 2>&1 \
-		| $(CGREP) -e "the generated executable for the input file \".*foo\.rs\" conflicts with the existing directory \".*foo\""

tests/run-make/output-filename-conflicts-with-directory/rmake.rs

@@ -0,0 +1,14 @@
+// ignore-tidy-linelength
+// When the compiled executable would conflict with a directory, a
+// rustc error should be displayed instead of a verbose and
+// potentially-confusing linker error.
+// See https://github.com/rust-lang/rust/pull/47203
+
+use run_make_support::{fs_wrapper, rustc};
+
+fn main() {
+    fs_wrapper::create_dir("foo");
+    rustc().input("foo.rs").output("foo").run_fail().assert_stderr_contains(
+        r#"the generated executable for the input file "foo.rs" conflicts with the existing directory "foo""#,
+    );
+}

tests/run-make/output-filename-overwrites-input/Makefile

@@ -1,14 +0,0 @@
-# ignore-cross-compile
-include ../tools.mk
-
-all:
-	cp foo.rs $(TMPDIR)/foo
-	$(RUSTC) $(TMPDIR)/foo -o $(TMPDIR)/foo 2>&1 \
-		| $(CGREP) -e "the input file \".*foo\" would be overwritten by the generated executable"
-	cp bar.rs $(TMPDIR)/bar.rlib
-	$(RUSTC) $(TMPDIR)/bar.rlib -o $(TMPDIR)/bar.rlib 2>&1 \
-		| $(CGREP) -e "the input file \".*bar.rlib\" would be overwritten by the generated executable"
-	$(RUSTC) foo.rs 2>&1 && $(RUSTC) -Z ls=root $(TMPDIR)/foo 2>&1
-	cp foo.rs $(TMPDIR)/foo.rs
-	$(RUSTC) $(TMPDIR)/foo.rs -o $(TMPDIR)/foo.rs 2>&1 \
-		| $(CGREP) -e "the input file \".*foo.rs\" would be overwritten by the generated executable"

tests/run-make/output-filename-overwrites-input/rmake.rs

@@ -0,0 +1,21 @@
+// If rustc is invoked on a file that would be overwritten by the
+// compilation, the compilation should fail, to avoid accidental loss.
+// See https://github.com/rust-lang/rust/pull/46814
+
+//@ ignore-cross-compile
+
+use run_make_support::{fs_wrapper, rustc};
+
+fn main() {
+    fs_wrapper::copy("foo.rs", "foo");
+    rustc().input("foo").output("foo").run_fail().assert_stderr_contains(
+        r#"the input file "foo" would be overwritten by the generated executable"#,
+    );
+    fs_wrapper::copy("bar.rs", "bar.rlib");
+    rustc().input("bar.rlib").output("bar.rlib").run_fail().assert_stderr_contains(
+        r#"the input file "bar.rlib" would be overwritten by the generated executable"#,
+    );
+    rustc().input("foo.rs").output("foo.rs").run_fail().assert_stderr_contains(
+        r#"the input file "foo.rs" would be overwritten by the generated executable"#,
+    );
+}