.gitignore

@@ -1 +1,2 @@
-SOURCES/rustc-1.52.1-src.tar.xz
+SOURCES/rustc-1.75.0-src.tar.xz
+SOURCES/wasi-libc-bd950eb128bff337153de217b11270f948d04bb4.tar.gz

.rust.metadata

@@ -1 +1,2 @@
-c5cdec7630c1915cac29e962e02465544335bad4 SOURCES/rustc-1.52.1-src.tar.xz
+9ad7bb54dc9572c103b855cdcc823addbb34d15d SOURCES/rustc-1.75.0-src.tar.xz
+55eaa32c99cc8ec970f2db2d340a605724589f9b SOURCES/wasi-libc-bd950eb128bff337153de217b11270f948d04bb4.tar.gz

SOURCES/0001-Let-environment-variables-override-some-default-CPUs.patch

@@ -0,0 +1,53 @@
+From 184d61d2c12aa2db01de9a14ccb2be0cfae5039b Mon Sep 17 00:00:00 2001
+From: Josh Stone <jistone@redhat.com>
+Date: Fri, 9 Jun 2023 15:23:08 -0700
+Subject: [PATCH] Let environment variables override some default CPUs
+
+---
+ .../src/spec/targets/powerpc64le_unknown_linux_gnu.rs           | 2 +-
+ .../rustc_target/src/spec/targets/s390x_unknown_linux_gnu.rs    | 2 +-
+ .../rustc_target/src/spec/targets/x86_64_unknown_linux_gnu.rs   | 2 +-
+ 3 files changed, 3 insertions(+), 3 deletions(-)
+
+diff --git a/compiler/rustc_target/src/spec/targets/powerpc64le_unknown_linux_gnu.rs b/compiler/rustc_target/src/spec/targets/powerpc64le_unknown_linux_gnu.rs
+index 194c3170e683..9806ca78297c 100644
+--- a/compiler/rustc_target/src/spec/targets/powerpc64le_unknown_linux_gnu.rs
++++ b/compiler/rustc_target/src/spec/targets/powerpc64le_unknown_linux_gnu.rs
+@@ -2,7 +2,7 @@
+ 
+ pub fn target() -> Target {
+     let mut base = base::linux_gnu::opts();
+-    base.cpu = "ppc64le".into();
++    base.cpu = option_env!("RUSTC_TARGET_CPU_PPC64LE").unwrap_or("ppc64le").into();
+     base.add_pre_link_args(LinkerFlavor::Gnu(Cc::Yes, Lld::No), &["-m64"]);
+     base.max_atomic_width = Some(64);
+     base.stack_probes = StackProbeType::Inline;
+diff --git a/compiler/rustc_target/src/spec/targets/s390x_unknown_linux_gnu.rs b/compiler/rustc_target/src/spec/targets/s390x_unknown_linux_gnu.rs
+index 6fc410eb2235..c8f84edb9715 100644
+--- a/compiler/rustc_target/src/spec/targets/s390x_unknown_linux_gnu.rs
++++ b/compiler/rustc_target/src/spec/targets/s390x_unknown_linux_gnu.rs
+@@ -5,7 +5,7 @@ pub fn target() -> Target {
+     let mut base = base::linux_gnu::opts();
+     base.endian = Endian::Big;
+     // z10 is the oldest CPU supported by LLVM
+-    base.cpu = "z10".into();
++    base.cpu = option_env!("RUSTC_TARGET_CPU_S390X").unwrap_or("z10").into();
+     // FIXME: The ABI implementation in cabi_s390x.rs is for now hard-coded to assume the no-vector
+     // ABI. Pass the -vector feature string to LLVM to respect this assumption. On LLVM < 16, we
+     // also strip v128 from the data_layout below to match the older LLVM's expectation.
+diff --git a/compiler/rustc_target/src/spec/targets/x86_64_unknown_linux_gnu.rs b/compiler/rustc_target/src/spec/targets/x86_64_unknown_linux_gnu.rs
+index 80e267c163fa..8436a00e66d5 100644
+--- a/compiler/rustc_target/src/spec/targets/x86_64_unknown_linux_gnu.rs
++++ b/compiler/rustc_target/src/spec/targets/x86_64_unknown_linux_gnu.rs
+@@ -2,7 +2,7 @@
+ 
+ pub fn target() -> Target {
+     let mut base = base::linux_gnu::opts();
+-    base.cpu = "x86-64".into();
++    base.cpu = option_env!("RUSTC_TARGET_CPU_X86_64").unwrap_or("x86-64").into();
+     base.plt_by_default = false;
+     base.max_atomic_width = Some(64);
+     base.add_pre_link_args(LinkerFlavor::Gnu(Cc::Yes, Lld::No), &["-m64"]);
+-- 
+2.41.0
+

SOURCES/0001-Revert-Auto-merge-of-79547.patch

@@ -1,102 +0,0 @@
-From eaf7ea1fc339e1ff348ed941ed2e8c4d66f3e458 Mon Sep 17 00:00:00 2001
-From: Josh Stone <jistone@redhat.com>
-Date: Thu, 18 Feb 2021 19:14:58 -0800
-Subject: [PATCH] Revert "Auto merge of #79547 - erikdesjardins:byval,
- r=nagisa"
-
-This reverts commit a094ff9590b83c8f94d898f92c2964a5803ded06, reversing
-changes made to d37afad0cc87bf709ad10c85319296ac53030f03.
----
- compiler/rustc_middle/src/ty/layout.rs               | 12 ++++++------
- ...return-value-in-reg.rs => return-value-in-reg.rs} |  4 ++--
- src/test/codegen/union-abi.rs                        | 11 +++--------
- 3 files changed, 11 insertions(+), 16 deletions(-)
- rename src/test/codegen/{arg-return-value-in-reg.rs => return-value-in-reg.rs} (74%)
-
-diff --git a/compiler/rustc_middle/src/ty/layout.rs b/compiler/rustc_middle/src/ty/layout.rs
-index b545b92c9252..545f6aee1a21 100644
---- a/compiler/rustc_middle/src/ty/layout.rs
-+++ b/compiler/rustc_middle/src/ty/layout.rs
-@@ -2849,7 +2849,7 @@ fn adjust_for_abi(&mut self, cx: &C, abi: SpecAbi) {
-             || abi == SpecAbi::RustIntrinsic
-             || abi == SpecAbi::PlatformIntrinsic
-         {
--            let fixup = |arg: &mut ArgAbi<'tcx, Ty<'tcx>>| {
-+            let fixup = |arg: &mut ArgAbi<'tcx, Ty<'tcx>>, is_ret: bool| {
-                 if arg.is_ignore() {
-                     return;
-                 }
-@@ -2887,9 +2887,9 @@ fn adjust_for_abi(&mut self, cx: &C, abi: SpecAbi) {
-                     _ => return,
-                 }
- 
--                // Pass and return structures up to 2 pointers in size by value, matching `ScalarPair`.
--                // LLVM will usually pass these in 2 registers, which is more efficient than by-ref.
--                let max_by_val_size = Pointer.size(cx) * 2;
-+                // Return structures up to 2 pointers in size by value, matching `ScalarPair`. LLVM
-+                // will usually return these in 2 registers, which is more efficient than by-ref.
-+                let max_by_val_size = if is_ret { Pointer.size(cx) * 2 } else { Pointer.size(cx) };
-                 let size = arg.layout.size;
- 
-                 if arg.layout.is_unsized() || size > max_by_val_size {
-@@ -2901,9 +2901,9 @@ fn adjust_for_abi(&mut self, cx: &C, abi: SpecAbi) {
-                     arg.cast_to(Reg { kind: RegKind::Integer, size });
-                 }
-             };
--            fixup(&mut self.ret);
-+            fixup(&mut self.ret, true);
-             for arg in &mut self.args {
--                fixup(arg);
-+                fixup(arg, false);
-             }
-             return;
-         }
-diff --git a/src/test/codegen/arg-return-value-in-reg.rs b/src/test/codegen/return-value-in-reg.rs
-similarity index 74%
-rename from src/test/codegen/arg-return-value-in-reg.rs
-rename to src/test/codegen/return-value-in-reg.rs
-index a69291d47821..4bc0136c5e32 100644
---- a/src/test/codegen/arg-return-value-in-reg.rs
-+++ b/src/test/codegen/return-value-in-reg.rs
-@@ -1,4 +1,4 @@
--//! Check that types of up to 128 bits are passed and returned by-value instead of via pointer.
-+//! This test checks that types of up to 128 bits are returned by-value instead of via out-pointer.
- 
- // compile-flags: -C no-prepopulate-passes -O
- // only-x86_64
-@@ -11,7 +11,7 @@ pub struct S {
-     c: u32,
- }
- 
--// CHECK: define i128 @modify(i128{{( %0)?}})
-+// CHECK: define i128 @modify(%S* noalias nocapture dereferenceable(16) %s)
- #[no_mangle]
- pub fn modify(s: S) -> S {
-     S { a: s.a + s.a, b: s.b + s.b, c: s.c + s.c }
-diff --git a/src/test/codegen/union-abi.rs b/src/test/codegen/union-abi.rs
-index f282fd237054..afea01e9a2d0 100644
---- a/src/test/codegen/union-abi.rs
-+++ b/src/test/codegen/union-abi.rs
-@@ -63,16 +63,11 @@ pub union UnionU128{a:u128}
- #[no_mangle]
- pub fn test_UnionU128(_: UnionU128) -> UnionU128 { loop {} }
- 
--pub union UnionU128x2{a:(u128, u128)}
--// CHECK: define void @test_UnionU128x2(i128 %_1.0, i128 %_1.1)
--#[no_mangle]
--pub fn test_UnionU128x2(_: UnionU128x2) { loop {} }
--
- #[repr(C)]
--pub union CUnionU128x2{a:(u128, u128)}
--// CHECK: define void @test_CUnionU128x2(%CUnionU128x2* {{.*}} %_1)
-+pub union CUnionU128{a:u128}
-+// CHECK: define void @test_CUnionU128(%CUnionU128* {{.*}} %_1)
- #[no_mangle]
--pub fn test_CUnionU128x2(_: CUnionU128x2) { loop {} }
-+pub fn test_CUnionU128(_: CUnionU128) { loop {} }
- 
- pub union UnionBool { b:bool }
- // CHECK: define zeroext i1 @test_UnionBool(i8 %b)
--- 
-2.29.2
-

SOURCES/0001-Use-lld-provided-by-system.patch

@@ -0,0 +1,53 @@
+From 61b5cc96337da2121221dd1bcdb63fd36551d065 Mon Sep 17 00:00:00 2001
+From: Josh Stone <jistone@redhat.com>
+Date: Wed, 1 Nov 2023 15:21:15 -0700
+Subject: [PATCH] Use lld provided by system
+
+---
+ compiler/rustc_target/src/spec/base/wasm.rs                   | 3 +--
+ compiler/rustc_target/src/spec/targets/x86_64_unknown_none.rs | 2 +-
+ compiler/rustc_target/src/spec/targets/x86_64_unknown_uefi.rs | 1 +
+ 3 files changed, 3 insertions(+), 3 deletions(-)
+
+diff --git a/compiler/rustc_target/src/spec/base/wasm.rs b/compiler/rustc_target/src/spec/base/wasm.rs
+index 87ade9e58cf4..2ddff95febab 100644
+--- a/compiler/rustc_target/src/spec/base/wasm.rs
++++ b/compiler/rustc_target/src/spec/base/wasm.rs
+@@ -91,8 +91,7 @@ macro_rules! args {
+         // arguments just yet
+         limit_rdylib_exports: false,
+ 
+-        // we use the LLD shipped with the Rust toolchain by default
+-        linker: Some("rust-lld".into()),
++        linker: Some("lld".into()),
+         linker_flavor: LinkerFlavor::WasmLld(Cc::No),
+ 
+         pre_link_args,
+diff --git a/compiler/rustc_target/src/spec/targets/x86_64_unknown_none.rs b/compiler/rustc_target/src/spec/targets/x86_64_unknown_none.rs
+index 9aa95a35f8e5..a9172f9441b7 100644
+--- a/compiler/rustc_target/src/spec/targets/x86_64_unknown_none.rs
++++ b/compiler/rustc_target/src/spec/targets/x86_64_unknown_none.rs
+@@ -17,7 +17,7 @@ pub fn target() -> Target {
+         static_position_independent_executables: true,
+         relro_level: RelroLevel::Full,
+         linker_flavor: LinkerFlavor::Gnu(Cc::No, Lld::Yes),
+-        linker: Some("rust-lld".into()),
++        linker: Some("lld".into()),
+         features:
+             "-mmx,-sse,-sse2,-sse3,-ssse3,-sse4.1,-sse4.2,-3dnow,-3dnowa,-avx,-avx2,+soft-float"
+                 .into(),
+diff --git a/compiler/rustc_target/src/spec/targets/x86_64_unknown_uefi.rs b/compiler/rustc_target/src/spec/targets/x86_64_unknown_uefi.rs
+index 5abfb8162f70..13cb43bda1a4 100644
+--- a/compiler/rustc_target/src/spec/targets/x86_64_unknown_uefi.rs
++++ b/compiler/rustc_target/src/spec/targets/x86_64_unknown_uefi.rs
+@@ -16,6 +16,7 @@ pub fn target() -> Target {
+     base.plt_by_default = false;
+     base.max_atomic_width = Some(64);
+     base.entry_abi = Conv::X86_64Win64;
++    base.linker = Some("lld".into());
+ 
+     // We disable MMX and SSE for now, even though UEFI allows using them. Problem is, you have to
+     // enable these CPU features explicitly before their first use, otherwise their instructions
+-- 
+2.41.0
+

SOURCES/0001-bootstrap-allow-disabling-target-self-contained.patch

@@ -0,0 +1,102 @@
+From df0d6f1d8b46db82d7599ca8eff6e8f844cf52f2 Mon Sep 17 00:00:00 2001
+From: Josh Stone <jistone@redhat.com>
+Date: Thu, 28 Sep 2023 18:14:28 -0700
+Subject: [PATCH 1/2] bootstrap: allow disabling target self-contained
+
+---
+ config.example.toml                           | 5 +++++
+ src/bootstrap/src/core/build_steps/compile.rs | 4 ++++
+ src/bootstrap/src/core/config/config.rs       | 8 ++++++++
+ src/bootstrap/src/lib.rs                      | 5 +++++
+ 4 files changed, 22 insertions(+)
+
+diff --git a/config.example.toml b/config.example.toml
+index e5df28a49af6..2fcd8b8cb057 100644
+--- a/config.example.toml
++++ b/config.example.toml
+@@ -807,6 +807,11 @@ change-id = 116881
+ # target triples containing `-none`, `nvptx`, `switch`, or `-uefi`.
+ #no-std = <platform-specific> (bool)
+ 
++# Copy libc and CRT objects into the target lib/self-contained/ directory.
++# Enabled by default on `musl`, `wasi`, and `windows-gnu` targets. Other
++# targets may ignore this setting if they have nothing to be contained.
++#self-contained = <platform-specific> (bool)
++
+ # =============================================================================
+ # Distribution options
+ #
+diff --git a/src/bootstrap/src/core/build_steps/compile.rs b/src/bootstrap/src/core/build_steps/compile.rs
+index 7021a9543582..11555c65ca87 100644
+--- a/src/bootstrap/src/core/build_steps/compile.rs
++++ b/src/bootstrap/src/core/build_steps/compile.rs
+@@ -302,6 +302,10 @@ fn copy_self_contained_objects(
+     compiler: &Compiler,
+     target: TargetSelection,
+ ) -> Vec<(PathBuf, DependencyType)> {
++    if builder.self_contained(target) != Some(true) {
++        return vec![];
++    }
++
+     let libdir_self_contained = builder.sysroot_libdir(*compiler, target).join("self-contained");
+     t!(fs::create_dir_all(&libdir_self_contained));
+     let mut target_deps = vec![];
+diff --git a/src/bootstrap/src/core/config/config.rs b/src/bootstrap/src/core/config/config.rs
+index 0a9175aa3ea5..a2e028b25036 100644
+--- a/src/bootstrap/src/core/config/config.rs
++++ b/src/bootstrap/src/core/config/config.rs
+@@ -533,6 +533,7 @@ pub struct Target {
+     pub wasi_root: Option<PathBuf>,
+     pub qemu_rootfs: Option<PathBuf>,
+     pub no_std: bool,
++    pub self_contained: bool,
+ }
+ 
+ impl Target {
+@@ -541,6 +542,9 @@ pub fn from_triple(triple: &str) -> Self {
+         if triple.contains("-none") || triple.contains("nvptx") || triple.contains("switch") {
+             target.no_std = true;
+         }
++        if triple.contains("-musl") || triple.contains("-wasi") || triple.contains("-windows-gnu") {
++            target.self_contained = true;
++        }
+         target
+     }
+ }
+@@ -1051,6 +1055,7 @@ struct TomlTarget {
+         wasi_root: Option<String> = "wasi-root",
+         qemu_rootfs: Option<String> = "qemu-rootfs",
+         no_std: Option<bool> = "no-std",
++        self_contained: Option<bool> = "self-contained",
+     }
+ }
+ 
+@@ -1600,6 +1605,9 @@ fn get_table(option: &str) -> Result<TomlConfig, toml::de::Error> {
+                 if let Some(s) = cfg.no_std {
+                     target.no_std = s;
+                 }
++                if let Some(s) = cfg.self_contained {
++                    target.self_contained = s;
++                }
+                 target.cc = cfg.cc.map(PathBuf::from);
+                 target.cxx = cfg.cxx.map(PathBuf::from);
+                 target.ar = cfg.ar.map(PathBuf::from);
+diff --git a/src/bootstrap/src/lib.rs b/src/bootstrap/src/lib.rs
+index 33b8f1a7ce72..f36e53187576 100644
+--- a/src/bootstrap/src/lib.rs
++++ b/src/bootstrap/src/lib.rs
+@@ -1335,6 +1335,11 @@ fn no_std(&self, target: TargetSelection) -> Option<bool> {
+         self.config.target_config.get(&target).map(|t| t.no_std)
+     }
+ 
++    /// Returns `true` if this is a self-contained `target`, if defined
++    fn self_contained(&self, target: TargetSelection) -> Option<bool> {
++        self.config.target_config.get(&target).map(|t| t.self_contained)
++    }
++
+     /// Returns `true` if the target will be tested using the `remote-test-client`
+     /// and `remote-test-server` binaries.
+     fn remote_tested(&self, target: TargetSelection) -> bool {
+-- 
+2.41.0
+

SOURCES/0001-bootstrap-only-show-PGO-warnings-when-verbose.patch

@@ -0,0 +1,33 @@
+From 776146e9ebb6bbe17a37bfad955f3dac95317275 Mon Sep 17 00:00:00 2001
+From: Josh Stone <jistone@redhat.com>
+Date: Thu, 16 Nov 2023 10:42:23 -0800
+Subject: [PATCH] bootstrap: only show PGO warnings when verbose
+
+Building rustc with `--rust-profile-use` is currently dumping a lot of
+warnings of "no profile data available for function" from `rustc_smir`
+and `stable_mir`. These simply aren't exercised by the current profile-
+gathering steps, but that's to be expected for new or experimental
+functionality. I think for most people, these warnings will be just
+noise, so it makes sense to only have them in verbose builds.
+---
+ src/bootstrap/src/core/build_steps/compile.rs | 4 +++-
+ 1 file changed, 3 insertions(+), 1 deletion(-)
+
+diff --git a/src/bootstrap/src/core/build_steps/compile.rs b/src/bootstrap/src/core/build_steps/compile.rs
+index af69860df1c5..51e4195827fc 100644
+--- a/src/bootstrap/src/core/build_steps/compile.rs
++++ b/src/bootstrap/src/core/build_steps/compile.rs
+@@ -887,7 +887,9 @@ fn run(self, builder: &Builder<'_>) {
+         } else if let Some(path) = &builder.config.rust_profile_use {
+             if compiler.stage == 1 {
+                 cargo.rustflag(&format!("-Cprofile-use={path}"));
+-                cargo.rustflag("-Cllvm-args=-pgo-warn-missing-function");
++                if builder.is_verbose() {
++                    cargo.rustflag("-Cllvm-args=-pgo-warn-missing-function");
++                }
+                 true
+             } else {
+                 false
+-- 
+2.43.0
+

SOURCES/0002-set-an-external-library-path-for-wasm32-wasi.patch

@@ -0,0 +1,78 @@
+From 79bb610c8fc5d9df7dd4720ae847b8f17e7b1ad4 Mon Sep 17 00:00:00 2001
+From: Josh Stone <jistone@redhat.com>
+Date: Thu, 28 Sep 2023 18:18:16 -0700
+Subject: [PATCH 2/2] set an external library path for wasm32-wasi
+
+---
+ compiler/rustc_codegen_ssa/src/back/link.rs           | 9 +++++++++
+ compiler/rustc_target/src/spec/mod.rs                 | 2 ++
+ compiler/rustc_target/src/spec/targets/wasm32_wasi.rs | 6 +++++-
+ 3 files changed, 16 insertions(+), 1 deletion(-)
+
+diff --git a/compiler/rustc_codegen_ssa/src/back/link.rs b/compiler/rustc_codegen_ssa/src/back/link.rs
+index dd9d277fb775..3d0f0502f255 100644
+--- a/compiler/rustc_codegen_ssa/src/back/link.rs
++++ b/compiler/rustc_codegen_ssa/src/back/link.rs
+@@ -1496,6 +1496,12 @@ fn get_object_file_path(sess: &Session, name: &str, self_contained: bool) -> Pat
+             return file_path;
+         }
+     }
++    if let Some(lib_path) = &sess.target.options.external_lib_path {
++        let file_path = Path::new(lib_path.as_ref()).join(name);
++        if file_path.exists() {
++            return file_path;
++        }
++    }
+     for search_path in fs.search_paths() {
+         let file_path = search_path.dir.join(name);
+         if file_path.exists() {
+@@ -1982,6 +1988,9 @@ fn add_library_search_dirs(cmd: &mut dyn Linker, sess: &Session, self_contained:
+         let lib_path = sess.target_filesearch(PathKind::All).get_self_contained_lib_path();
+         cmd.include_path(&fix_windows_verbatim_for_gcc(&lib_path));
+     }
++    if let Some(lib_path) = &sess.target.options.external_lib_path {
++        cmd.include_path(Path::new(lib_path.as_ref()));
++    }
+ }
+ 
+ /// Add options making relocation sections in the produced ELF files read-only
+diff --git a/compiler/rustc_target/src/spec/mod.rs b/compiler/rustc_target/src/spec/mod.rs
+index f04799482c83..25410b37ba24 100644
+--- a/compiler/rustc_target/src/spec/mod.rs
++++ b/compiler/rustc_target/src/spec/mod.rs
+@@ -1874,6 +1874,7 @@ pub struct TargetOptions {
+     /// Objects to link before and after all other object code.
+     pub pre_link_objects: CrtObjects,
+     pub post_link_objects: CrtObjects,
++    pub external_lib_path: Option<StaticCow<str>>,
+     /// Same as `(pre|post)_link_objects`, but when self-contained linking mode is enabled.
+     pub pre_link_objects_self_contained: CrtObjects,
+     pub post_link_objects_self_contained: CrtObjects,
+@@ -2352,6 +2353,7 @@ fn default() -> TargetOptions {
+             relro_level: RelroLevel::None,
+             pre_link_objects: Default::default(),
+             post_link_objects: Default::default(),
++            external_lib_path: None,
+             pre_link_objects_self_contained: Default::default(),
+             post_link_objects_self_contained: Default::default(),
+             link_self_contained: LinkSelfContainedDefault::False,
+diff --git a/compiler/rustc_target/src/spec/targets/wasm32_wasi.rs b/compiler/rustc_target/src/spec/targets/wasm32_wasi.rs
+index 6dbcb01ea436..2151f86d0648 100644
+--- a/compiler/rustc_target/src/spec/targets/wasm32_wasi.rs
++++ b/compiler/rustc_target/src/spec/targets/wasm32_wasi.rs
+@@ -86,7 +86,11 @@ pub fn target() -> Target {
+     options.post_link_objects_self_contained = crt_objects::post_wasi_self_contained();
+ 
+     // FIXME: Figure out cases in which WASM needs to link with a native toolchain.
+-    options.link_self_contained = LinkSelfContainedDefault::True;
++    options.link_self_contained = LinkSelfContainedDefault::False;
++
++    options.pre_link_objects = options.pre_link_objects_self_contained.clone();
++    options.post_link_objects = options.post_link_objects_self_contained.clone();
++    options.external_lib_path = Some("/usr/wasm32-wasi/lib/wasm32-wasi".into());
+ 
+     // Right now this is a bit of a workaround but we're currently saying that
+     // the target by default has a static crt which we're taking as a signal
+-- 
+2.41.0
+

SOURCES/macros.rust-toolset

@@ -0,0 +1,181 @@
+# Explicitly use bindir tools, in case others are in the PATH,
+# like the rustup shims in a user's ~/.cargo/bin/.
+#
+# Since cargo 1.31, install only uses $CARGO_HOME/config, ignoring $PWD.
+#   https://github.com/rust-lang/cargo/issues/6397
+# But we can set CARGO_HOME locally, which is a good idea anyway to make sure
+# it never writes to ~/.cargo during rpmbuild.
+%__cargo /usr/bin/env CARGO_HOME=.cargo RUSTFLAGS='%{build_rustflags}' /usr/bin/cargo
+%__rustc /usr/bin/rustc
+%__rustdoc /usr/bin/rustdoc
+
+# rustflags_opt_level: default optimization level
+#
+# It corresponds to the "-Copt-level" rustc command line option.
+%rustflags_opt_level 3
+
+# rustflags_debuginfo: default verbosity of debug information
+#
+# It corresponds to the "-Cdebuginfo" rustc command line option.
+# In some cases, it might be required to override this macro with "1" or even
+# "0", if memory usage gets too high during builds on some resource-constrained
+# architectures (most likely on 32-bit architectures), which will however
+# reduce the quality of the produced debug symbols.
+%rustflags_debuginfo 2
+
+# rustflags_codegen_units: default number of parallel code generation units
+#
+# The default value of "1" results in generation of better code, but comes at
+# the cost of longer build times.
+%rustflags_codegen_units 1
+
+# build_rustflags: default compiler flags for rustc (RUSTFLAGS)
+#
+# -Copt-level: set optimization level (default: highest optimization level)
+# -Cdebuginfo: set debuginfo verbosity (default: full debug information)
+# -Ccodegen-units: set number of parallel code generation units (default: 1)
+#
+# ref. https://doc.rust-lang.org/rustc/codegen-options/index.html
+%build_rustflags %{shrink:
+  -Copt-level=%rustflags_opt_level
+  -Cdebuginfo=%rustflags_debuginfo
+  -Ccodegen-units=%rustflags_codegen_units
+}
+
+# __cargo_common_opts: common command line flags for cargo
+#
+# _smp_mflags: run builds and tests in parallel
+%__cargo_common_opts %{?_smp_mflags}
+
+%cargo_prep(V:) (\
+%{__mkdir} -p .cargo \
+cat > .cargo/config << EOF \
+[build]\
+rustc = "%{__rustc}"\
+rustdoc = "%{__rustdoc}"\
+\
+[env]\
+CFLAGS = "%{build_cflags}"\
+CXXFLAGS = "%{build_cxxflags}"\
+LDFLAGS = "%{build_ldflags}"\
+\
+[install]\
+root = "%{buildroot}%{_prefix}"\
+\
+[term]\
+verbose = true\
+EOF\
+%if 0%{-V:1}\
+%{__tar} -xoaf %{S:%{-V*}}\
+cat >> .cargo/config << EOF \
+\
+[source.crates-io]\
+replace-with = "vendored-sources"\
+\
+[source.vendored-sources]\
+directory = "./vendor"\
+EOF\
+%endif\
+)
+
+# __cargo_parse_opts: function-like macro which parses common flags into the
+#       equivalent command-line flags for cargo
+%__cargo_parse_opts(naf:) %{shrink:\
+%{-f:%{-a:%{error:Can't specify both -f(%{-f*}) and -a}}} \
+  %{-n:--no-default-features}                             \
+  %{-a:--all-features}                                    \
+  %{-f:--features %{-f*}}                                 \
+  %{nil}
+}
+
+# NB: cargo_build/test/install do not use the -n/-a/-f argument parsing like
+# Fedora's rust-packaging, because that change would break anyone that's
+# already passing arguments directly to cargo after the macro. Instead, one can
+# explicitly use --no-default-features, --all-features, or --features XYZ.
+
+# cargo_build: builds the crate with cargo
+%cargo_build \
+%{shrink:\
+  %{__cargo} build                                   \
+    %{__cargo_common_opts}                           \
+    --release                                        \
+}
+
+# cargo_test: runs the test suite with cargo
+#
+# To pass command-line arguments to the cargo test runners directly (for
+# example, to skip certain tests during package builds), the
+# "cargo test" argument parsing need to be bypassed,
+# i.e. "%%cargo_test -- --skip foo" for skipping all tests with names that
+# match "foo".
+%cargo_test \
+%{shrink:\
+  %{__cargo} test                                    \
+    %{__cargo_common_opts}                           \
+    --release                                        \
+    --no-fail-fast                                   \
+}
+
+# cargo_install: install files into the buildroot
+#
+# For "binary" crates, this macro installs all "bin" build targets to _bindir
+# inside the buildroot. The "--no-track" option prevents the creation of the
+# "$CARGO_HOME/.crates.toml" file, which is used to keep track of which version
+# of a specific binary has been installed, but which conflicts between builds
+# of different Rust applications and is not needed when building RPM packages.
+%cargo_install \
+%{shrink:                                                         \
+  %{__cargo} install                                              \
+    %{__cargo_common_opts}                                        \
+    --no-track                                                    \
+    --path .                                                      \
+}                                                                 \
+
+# cargo_license: print license information for all crate dependencies
+#
+# The "no-build,no-dev,no-proc-macro" argument results in only crates which are
+# linked into the final binary to be considered.
+#
+# Additionally, deprecated SPDX syntax ("/" instead of "OR") is normalized
+# before sorting the results to ensure reproducible output of this macro.
+#
+# This macro must be called with the same feature flags as other cargo macros,
+# in particular, "cargo_build", otherwise its output will be incomplete.
+#
+# The "cargo tree" command called by this macro will fail if there are missing
+# (optional) dependencies.
+%cargo_license(naf:)\
+%{shrink:\
+    %{__cargo} tree                                                 \
+    --workspace                                                     \
+    --offline                                                       \
+    --edges no-build,no-dev,no-proc-macro                           \
+    --no-dedupe                                                     \
+    --target all                                                    \
+    %{__cargo_parse_opts %{-n} %{-a} %{-f:-f%{-f*}}}                \
+    --prefix none                                                   \
+    --format "{l}: {p}"                                             \
+    | sed -e "s: ($(pwd)[^)]*)::g" -e "s: / :/:g" -e "s:/: OR :g"   \
+    | sort -u
+}
+
+# cargo_license_summary: print license summary for all crate dependencies
+#
+# This macro works in the same way as cargo_license, except that it only prints
+# a list of licenses, and not the complete license information for every crate
+# in the dependency tree. This is useful for determining the correct License
+# tag for packages that contain compiled Rust binaries.
+%cargo_license_summary(naf:)\
+%{shrink:\
+    %{__cargo} tree                                                 \
+    --workspace                                                     \
+    --offline                                                       \
+    --edges no-build,no-dev,no-proc-macro                           \
+    --no-dedupe                                                     \
+    --target all                                                    \
+    %{__cargo_parse_opts %{-n} %{-a} %{-f:-f%{-f*}}}                \
+    --prefix none                                                   \
+    --format "# {l}"                                                \
+    | sed -e "s: / :/:g" -e "s:/: OR :g"                            \
+    | sort -u                                                       \
+}

SOURCES/rustc-1.48.0-disable-libssh2.patch

@@ -1,42 +0,0 @@
---- rustc-1.48.0-src/Cargo.lock.orig	2020-11-16 06:01:53.000000000 -0800
-+++ rustc-1.48.0-src/Cargo.lock	2020-11-16 09:27:44.425104404 -0800
-@@ -1676,7 +1676,6 @@
- dependencies = [
-  "cc",
-  "libc",
-- "libssh2-sys",
-  "libz-sys",
-  "openssl-sys",
-  "pkg-config",
-@@ -1693,20 +1692,6 @@
- ]
- 
- [[package]]
--name = "libssh2-sys"
--version = "0.2.19"
--source = "registry+https://github.com/rust-lang/crates.io-index"
--checksum = "ca46220853ba1c512fc82826d0834d87b06bcd3c2a42241b7de72f3d2fe17056"
--dependencies = [
-- "cc",
-- "libc",
-- "libz-sys",
-- "openssl-sys",
-- "pkg-config",
-- "vcpkg",
--]
--
--[[package]]
- name = "libz-sys"
- version = "1.1.2"
- source = "registry+https://github.com/rust-lang/crates.io-index"
---- rustc-1.48.0-src/vendor/git2/Cargo.toml.orig	2020-11-16 06:27:49.000000000 -0800
-+++ rustc-1.48.0-src/vendor/git2/Cargo.toml	2020-11-16 09:27:44.425104404 -0800
-@@ -49,7 +49,7 @@
- version = "0.1.39"
- 
- [features]
--default = ["ssh", "https", "ssh_key_from_memory"]
-+default = ["https"]
- https = ["libgit2-sys/https", "openssl-sys", "openssl-probe"]
- ssh = ["libgit2-sys/ssh"]
- ssh_key_from_memory = ["libgit2-sys/ssh_key_from_memory"]

SOURCES/rustc-1.51.0-disable-http2.patch

@@ -1,66 +0,0 @@
---- rustc-beta-src/Cargo.lock.orig	2021-03-09 10:30:08.626424998 -0800
-+++ rustc-beta-src/Cargo.lock	2021-03-09 10:32:38.096207704 -0800
-@@ -899,7 +899,6 @@
- dependencies = [
-  "cc",
-  "libc",
-- "libnghttp2-sys",
-  "libz-sys",
-  "openssl-sys",
-  "pkg-config",
-@@ -1860,16 +1859,6 @@
- ]
- 
- [[package]]
--name = "libnghttp2-sys"
--version = "0.1.4+1.41.0"
--source = "registry+https://github.com/rust-lang/crates.io-index"
--checksum = "03624ec6df166e79e139a2310ca213283d6b3c30810c54844f307086d4488df1"
--dependencies = [
-- "cc",
-- "libc",
--]
--
--[[package]]
- name = "libz-sys"
- version = "1.1.2"
- source = "registry+https://github.com/rust-lang/crates.io-index"
---- rustc-beta-src/src/tools/cargo/Cargo.toml.orig	2021-03-05 08:34:15.000000000 -0800
-+++ rustc-beta-src/src/tools/cargo/Cargo.toml	2021-03-09 10:32:38.096207704 -0800
-@@ -25,7 +25,7 @@
- crates-io = { path = "crates/crates-io", version = "0.33.0" }
- crossbeam-utils = "0.8"
- crypto-hash = "0.3.1"
--curl = { version = "0.4.23", features = ["http2"] }
-+curl = { version = "0.4.23", features = [] }
- curl-sys = "0.4.22"
- env_logger = "0.8.1"
- pretty_env_logger = { version = "0.4", optional = true }
---- rustc-beta-src/src/tools/cargo/src/cargo/core/package.rs.orig	2021-03-05 08:34:15.000000000 -0800
-+++ rustc-beta-src/src/tools/cargo/src/cargo/core/package.rs	2021-03-09 10:32:38.096207704 -0800
-@@ -412,14 +412,8 @@
-         // Also note that pipelining is disabled as curl authors have indicated
-         // that it's buggy, and we've empirically seen that it's buggy with HTTP
-         // proxies.
--        let mut multi = Multi::new();
--        let multiplexing = config.http_config()?.multiplexing.unwrap_or(true);
--        multi
--            .pipelining(false, multiplexing)
--            .chain_err(|| "failed to enable multiplexing/pipelining in curl")?;
--
--        // let's not flood crates.io with connections
--        multi.set_max_host_connections(2)?;
-+        let multi = Multi::new();
-+        let multiplexing = false;
- 
-         Ok(PackageSet {
-             packages: package_ids
-@@ -592,7 +586,7 @@
- macro_rules! try_old_curl {
-     ($e:expr, $msg:expr) => {
-         let result = $e;
--        if cfg!(target_os = "macos") {
-+        if cfg!(any(target_os = "linux", target_os = "macos")) {
-             if let Err(e) = result {
-                 warn!("ignoring libcurl {} error: {}", $msg, e);
-             }

SOURCES/rustc-1.51.0-no-default-pie.patch

@@ -1,19 +0,0 @@
---- rustc-beta-src/compiler/rustc_codegen_ssa/src/back/link.rs.orig	2021-03-09 10:40:09.755485845 -0800
-+++ rustc-beta-src/compiler/rustc_codegen_ssa/src/back/link.rs	2021-03-09 10:44:51.257426181 -0800
-@@ -1279,11 +1279,13 @@
- }
- 
- fn link_output_kind(sess: &Session, crate_type: CrateType) -> LinkOutputKind {
--    let kind = match (crate_type, sess.crt_static(Some(crate_type)), sess.relocation_model()) {
-+    // Only use PIE if explicity specified.
-+    let explicit_pic = matches!(sess.opts.cg.relocation_model, Some(RelocModel::Pic));
-+    let kind = match (crate_type, sess.crt_static(Some(crate_type)), explicit_pic) {
-         (CrateType::Executable, _, _) if sess.is_wasi_reactor() => LinkOutputKind::WasiReactorExe,
--        (CrateType::Executable, false, RelocModel::Pic) => LinkOutputKind::DynamicPicExe,
-+        (CrateType::Executable, false, true) => LinkOutputKind::DynamicPicExe,
-         (CrateType::Executable, false, _) => LinkOutputKind::DynamicNoPicExe,
--        (CrateType::Executable, true, RelocModel::Pic) => LinkOutputKind::StaticPicExe,
-+        (CrateType::Executable, true, true) => LinkOutputKind::StaticPicExe,
-         (CrateType::Executable, true, _) => LinkOutputKind::StaticNoPicExe,
-         (_, true, _) => LinkOutputKind::StaticDylib,
-         (_, false, _) => LinkOutputKind::DynamicDylib,

SOURCES/rustc-1.70.0-rust-gdb-substitute-path.patch

@@ -0,0 +1,21 @@
+diff --git a/src/etc/rust-gdb b/src/etc/rust-gdb
+index 9abed30ea6f7..e4bf55df3688 100755
+--- a/src/etc/rust-gdb
++++ b/src/etc/rust-gdb
+@@ -13,8 +13,6 @@ fi
+ # Find out where the pretty printer Python module is
+ RUSTC_SYSROOT="$("$RUSTC" --print=sysroot)"
+ GDB_PYTHON_MODULE_DIRECTORY="$RUSTC_SYSROOT/lib/rustlib/etc"
+-# Get the commit hash for path remapping
+-RUSTC_COMMIT_HASH="$("$RUSTC" -vV | sed -n 's/commit-hash: \([a-zA-Z0-9_]*\)/\1/p')"
+ 
+ # Run GDB with the additional arguments that load the pretty printers
+ # Set the environment variable `RUST_GDB` to overwrite the call to a
+@@ -23,6 +21,6 @@ RUST_GDB="${RUST_GDB:-gdb}"
+ PYTHONPATH="$PYTHONPATH:$GDB_PYTHON_MODULE_DIRECTORY" exec ${RUST_GDB} \
+   --directory="$GDB_PYTHON_MODULE_DIRECTORY" \
+   -iex "add-auto-load-safe-path $GDB_PYTHON_MODULE_DIRECTORY" \
+-  -iex "set substitute-path /rustc/$RUSTC_COMMIT_HASH $RUSTC_SYSROOT/lib/rustlib/src/rust" \
++  -iex "set substitute-path @BUILDDIR@ $RUSTC_SYSROOT/lib/rustlib/src/rust" \
+   "$@"
+  

SOURCES/rustc-1.75.0-disable-libssh2.patch

@@ -0,0 +1,42 @@
+--- ./rustc-beta-src/src/tools/cargo/Cargo.lock.orig	2023-11-12 12:24:35.000000000 -0800
++++ rustc-beta-src/src/tools/cargo/Cargo.lock	2023-11-14 17:01:32.010125953 -0800
+@@ -2027,7 +2027,6 @@
+ dependencies = [
+  "cc",
+  "libc",
+- "libssh2-sys",
+  "libz-sys",
+  "openssl-sys",
+  "pkg-config",
+@@ -2060,20 +2059,6 @@
+ ]
+ 
+ [[package]]
+-name = "libssh2-sys"
+-version = "0.3.0"
+-source = "registry+https://github.com/rust-lang/crates.io-index"
+-checksum = "2dc8a030b787e2119a731f1951d6a773e2280c660f8ec4b0f5e1505a386e71ee"
+-dependencies = [
+- "cc",
+- "libc",
+- "libz-sys",
+- "openssl-sys",
+- "pkg-config",
+- "vcpkg",
+-]
+-
+-[[package]]
+ name = "libz-sys"
+ version = "1.1.9"
+ source = "registry+https://github.com/rust-lang/crates.io-index"
+--- ./rustc-beta-src/src/tools/cargo/Cargo.toml.orig	2023-11-14 17:01:32.010125953 -0800
++++ rustc-beta-src/src/tools/cargo/Cargo.toml	2023-11-14 17:02:44.645097701 -0800
+@@ -40,7 +40,7 @@
+ curl-sys = "0.4.68"
+ filetime = "0.2.22"
+ flate2 = { version = "1.0.28", default-features = false, features = ["zlib"] }
+-git2 = "0.18.1"
++git2 = { version = "0.18.1", default-features = false, features = ["https"] }
+ git2-curl = "0.19.0"
+ gix = { version = "0.55.2", default-features = false, features = ["blocking-http-transport-curl", "progress-tree", "revision"] }
+ gix-features-for-configuration-only = { version = "0.35.0", package = "gix-features", features = [ "parallel" ] }