diff --git a/.gitignore b/.gitignore
index 2e090d7..cd447ec 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,2 @@
-SOURCES/rustc-1.71.1-src.tar.xz
-SOURCES/wasi-libc-wasi-sdk-20.tar.gz
+SOURCES/rustc-1.75.0-src.tar.xz
+SOURCES/wasi-libc-bd950eb128bff337153de217b11270f948d04bb4.tar.gz
diff --git a/.rust.metadata b/.rust.metadata
index 7213a20..f65d0ce 100644
--- a/.rust.metadata
+++ b/.rust.metadata
@@ -1,2 +1,2 @@
-ffa03139b447604322d689eefe4e157a49c39f51 SOURCES/rustc-1.71.1-src.tar.xz
-8678e3510c88ef1de4d8c2940fa8ddad8f4eb084 SOURCES/wasi-libc-wasi-sdk-20.tar.gz
+9ad7bb54dc9572c103b855cdcc823addbb34d15d SOURCES/rustc-1.75.0-src.tar.xz
+55eaa32c99cc8ec970f2db2d340a605724589f9b SOURCES/wasi-libc-bd950eb128bff337153de217b11270f948d04bb4.tar.gz
diff --git a/SOURCES/0001-Allow-using-external-builds-of-the-compiler-rt-profi.patch b/SOURCES/0001-Allow-using-external-builds-of-the-compiler-rt-profi.patch
deleted file mode 100644
index 2b1ecb5..0000000
--- a/SOURCES/0001-Allow-using-external-builds-of-the-compiler-rt-profi.patch
+++ /dev/null
@@ -1,142 +0,0 @@
-From f2fd2d01f96b50b039402c9ab4278230687f7922 Mon Sep 17 00:00:00 2001
-From: Josh Stone <jistone@redhat.com>
-Date: Tue, 25 Jul 2023 13:11:50 -0700
-Subject: [PATCH] Allow using external builds of the compiler-rt profile lib
-
-This changes the bootstrap config `target.*.profiler` from a plain bool
-to also allow a string, which will be used as a path to the pre-built
-profiling runtime for that target. Then `profiler_builtins/build.rs`
-reads that in a `LLVM_PROFILER_RT_LIB` environment variable.
----
- config.example.toml                |  6 ++++--
- library/profiler_builtins/build.rs |  6 ++++++
- src/bootstrap/compile.rs           |  4 ++++
- src/bootstrap/config.rs            | 30 ++++++++++++++++++++++++------
- 4 files changed, 38 insertions(+), 8 deletions(-)
-
-diff --git a/config.example.toml b/config.example.toml
-index d0eaa9fd7ffa..e0e991e679af 100644
---- a/config.example.toml
-+++ b/config.example.toml
-@@ -745,8 +745,10 @@ changelog-seen = 2
- # This option will override the same option under [build] section.
- #sanitizers = build.sanitizers (bool)
- 
--# Build the profiler runtime for this target(required when compiling with options that depend
--# on this runtime, such as `-C profile-generate` or `-C instrument-coverage`).
-+# When true, build the profiler runtime for this target(required when compiling
-+# with options that depend on this runtime, such as `-C profile-generate` or
-+# `-C instrument-coverage`). This may also be given a path to an existing build
-+# of the profiling runtime library from LLVM's compiler-rt.
- # This option will override the same option under [build] section.
- #profiler = build.profiler (bool)
- 
-diff --git a/library/profiler_builtins/build.rs b/library/profiler_builtins/build.rs
-index 1b1f11798d74..d14d0b82229a 100644
---- a/library/profiler_builtins/build.rs
-+++ b/library/profiler_builtins/build.rs
-@@ -6,6 +6,12 @@
- use std::path::Path;
- 
- fn main() {
-+    println!("cargo:rerun-if-env-changed=LLVM_PROFILER_RT_LIB");
-+    if let Ok(rt) = env::var("LLVM_PROFILER_RT_LIB") {
-+        println!("cargo:rustc-link-lib=static:+verbatim={rt}");
-+        return;
-+    }
-+
-     let target = env::var("TARGET").expect("TARGET was not set");
-     let cfg = &mut cc::Build::new();
- 
-diff --git a/src/bootstrap/compile.rs b/src/bootstrap/compile.rs
-index 33addb90da37..1d8b3c6e5435 100644
---- a/src/bootstrap/compile.rs
-+++ b/src/bootstrap/compile.rs
-@@ -305,6 +305,10 @@ pub fn std_cargo(builder: &Builder<'_>, target: TargetSelection, stage: u32, car
-         cargo.env("MACOSX_DEPLOYMENT_TARGET", target);
-     }
- 
-+    if let Some(path) = builder.config.profiler_path(target) {
-+        cargo.env("LLVM_PROFILER_RT_LIB", path);
-+    }
-+
-     // Determine if we're going to compile in optimized C intrinsics to
-     // the `compiler-builtins` crate. These intrinsics live in LLVM's
-     // `compiler-rt` repository, but our `src/llvm-project` submodule isn't
-diff --git a/src/bootstrap/config.rs b/src/bootstrap/config.rs
-index e192cda9a9a7..a4803db0a470 100644
---- a/src/bootstrap/config.rs
-+++ b/src/bootstrap/config.rs
-@@ -467,7 +467,7 @@ pub struct Target {
-     pub linker: Option<PathBuf>,
-     pub ndk: Option<PathBuf>,
-     pub sanitizers: Option<bool>,
--    pub profiler: Option<bool>,
-+    pub profiler: Option<StringOrBool>,
-     pub rpath: Option<bool>,
-     pub crt_static: Option<bool>,
-     pub musl_root: Option<PathBuf>,
-@@ -796,9 +796,9 @@ struct Dist {
-     }
- }
- 
--#[derive(Debug, Deserialize)]
-+#[derive(Clone, Debug, Deserialize)]
- #[serde(untagged)]
--enum StringOrBool {
-+pub enum StringOrBool {
-     String(String),
-     Bool(bool),
- }
-@@ -809,6 +809,12 @@ fn default() -> StringOrBool {
-     }
- }
- 
-+impl StringOrBool {
-+    fn is_string_or_true(&self) -> bool {
-+        matches!(self, Self::String(_) | Self::Bool(true))
-+    }
-+}
-+
- define_config! {
-     /// TOML representation of how the Rust build is configured.
-     struct Rust {
-@@ -880,7 +886,7 @@ struct TomlTarget {
-         llvm_libunwind: Option<String> = "llvm-libunwind",
-         android_ndk: Option<String> = "android-ndk",
-         sanitizers: Option<bool> = "sanitizers",
--        profiler: Option<bool> = "profiler",
-+        profiler: Option<StringOrBool> = "profiler",
-         rpath: Option<bool> = "rpath",
-         crt_static: Option<bool> = "crt-static",
-         musl_root: Option<String> = "musl-root",
-@@ -1744,12 +1750,24 @@ pub fn any_sanitizers_enabled(&self) -> bool {
-         self.target_config.values().any(|t| t.sanitizers == Some(true)) || self.sanitizers
-     }
- 
-+    pub fn profiler_path(&self, target: TargetSelection) -> Option<&str> {
-+        match self.target_config.get(&target)?.profiler.as_ref()? {
-+            StringOrBool::String(s) => Some(s),
-+            StringOrBool::Bool(_) => None,
-+        }
-+    }
-+
-     pub fn profiler_enabled(&self, target: TargetSelection) -> bool {
--        self.target_config.get(&target).map(|t| t.profiler).flatten().unwrap_or(self.profiler)
-+        self.target_config
-+            .get(&target)
-+            .and_then(|t| t.profiler.as_ref())
-+            .map(StringOrBool::is_string_or_true)
-+            .unwrap_or(self.profiler)
-     }
- 
-     pub fn any_profiler_enabled(&self) -> bool {
--        self.target_config.values().any(|t| t.profiler == Some(true)) || self.profiler
-+        self.target_config.values().any(|t| matches!(&t.profiler, Some(p) if p.is_string_or_true()))
-+            || self.profiler
-     }
- 
-     pub fn rpath_enabled(&self, target: TargetSelection) -> bool {
--- 
-2.41.0
-
diff --git a/SOURCES/0001-Let-environment-variables-override-some-default-CPUs.patch b/SOURCES/0001-Let-environment-variables-override-some-default-CPUs.patch
index c394f78..dc8be55 100644
--- a/SOURCES/0001-Let-environment-variables-override-some-default-CPUs.patch
+++ b/SOURCES/0001-Let-environment-variables-override-some-default-CPUs.patch
@@ -1,33 +1,33 @@
-From 6e2adb05860b72610291d3b0e8bd525c44cb0cc9 Mon Sep 17 00:00:00 2001
+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
 
 ---
- compiler/rustc_target/src/spec/powerpc64le_unknown_linux_gnu.rs | 2 +-
- compiler/rustc_target/src/spec/s390x_unknown_linux_gnu.rs       | 2 +-
- compiler/rustc_target/src/spec/x86_64_unknown_linux_gnu.rs      | 2 +-
+ .../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/powerpc64le_unknown_linux_gnu.rs b/compiler/rustc_target/src/spec/powerpc64le_unknown_linux_gnu.rs
-index fd896e086b54..08d0c43d20b4 100644
---- a/compiler/rustc_target/src/spec/powerpc64le_unknown_linux_gnu.rs
-+++ b/compiler/rustc_target/src/spec/powerpc64le_unknown_linux_gnu.rs
+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 = super::linux_gnu_base::opts();
+     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/s390x_unknown_linux_gnu.rs b/compiler/rustc_target/src/spec/s390x_unknown_linux_gnu.rs
-index f2c722b9a89d..17a14d10b27e 100644
---- a/compiler/rustc_target/src/spec/s390x_unknown_linux_gnu.rs
-+++ b/compiler/rustc_target/src/spec/s390x_unknown_linux_gnu.rs
+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 = super::linux_gnu_base::opts();
+     let mut base = base::linux_gnu::opts();
      base.endian = Endian::Big;
      // z10 is the oldest CPU supported by LLVM
 -    base.cpu = "z10".into();
@@ -35,19 +35,19 @@ index f2c722b9a89d..17a14d10b27e 100644
      // 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/x86_64_unknown_linux_gnu.rs b/compiler/rustc_target/src/spec/x86_64_unknown_linux_gnu.rs
-index 9af1049b8702..68f876dd18c3 100644
---- a/compiler/rustc_target/src/spec/x86_64_unknown_linux_gnu.rs
-+++ b/compiler/rustc_target/src/spec/x86_64_unknown_linux_gnu.rs
+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 = super::linux_gnu_base::opts();
+     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"]);
-     base.stack_probes = StackProbeType::X86;
 -- 
-2.40.1
+2.41.0
 
diff --git a/SOURCES/0001-Use-lld-provided-by-system-for-wasm.patch b/SOURCES/0001-Use-lld-provided-by-system-for-wasm.patch
deleted file mode 100644
index 5fcc245..0000000
--- a/SOURCES/0001-Use-lld-provided-by-system-for-wasm.patch
+++ /dev/null
@@ -1,26 +0,0 @@
-From 37cb177eb53145103ae72b67562884782dde01c3 Mon Sep 17 00:00:00 2001
-From: Ivan Mironov <mironov.ivan@gmail.com>
-Date: Sun, 8 Dec 2019 17:23:08 +0500
-Subject: [PATCH] Use lld provided by system for wasm
-
----
- compiler/rustc_target/src/spec/wasm_base.rs | 3 +--
- 1 file changed, 1 insertion(+), 2 deletions(-)
-
-diff --git a/compiler/rustc_target/src/spec/wasm_base.rs b/compiler/rustc_target/src/spec/wasm_base.rs
-index 528a84a8b37c..353d742161d1 100644
---- a/compiler/rustc_target/src/spec/wasm_base.rs
-+++ b/compiler/rustc_target/src/spec/wasm_base.rs
-@@ -89,8 +89,7 @@ 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,
--- 
-2.38.1
-
diff --git a/SOURCES/0001-Use-lld-provided-by-system.patch b/SOURCES/0001-Use-lld-provided-by-system.patch
new file mode 100644
index 0000000..bee8e16
--- /dev/null
+++ b/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
+
diff --git a/SOURCES/0001-bootstrap-allow-disabling-target-self-contained.patch b/SOURCES/0001-bootstrap-allow-disabling-target-self-contained.patch
new file mode 100644
index 0000000..2a3cbd7
--- /dev/null
+++ b/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
+
diff --git a/SOURCES/0001-bootstrap-config-fix-version-comparison-bug.patch b/SOURCES/0001-bootstrap-config-fix-version-comparison-bug.patch
deleted file mode 100644
index f0c4e55..0000000
--- a/SOURCES/0001-bootstrap-config-fix-version-comparison-bug.patch
+++ /dev/null
@@ -1,36 +0,0 @@
-From a627c8f54cab6880dc7d36c55092a94c6f750a6e Mon Sep 17 00:00:00 2001
-From: Ariadne Conill <ariadne@dereferenced.org>
-Date: Thu, 3 Aug 2023 15:05:40 -0700
-Subject: [PATCH] bootstrap: config: fix version comparison bug
-
-Rust requires a previous version of Rust to build, such as the current version, or the
-previous version.  However, the version comparison logic did not take patch releases
-into consideration when doing the version comparison for the current branch, e.g.
-Rust 1.71.1 could not be built by Rust 1.71.0 because it is neither an exact version
-match, or the previous version.
-
-Adjust the version comparison logic to tolerate mismatches in the patch version.
-
-Signed-off-by: Ariadne Conill <ariadne@dereferenced.org>
-(cherry picked from commit 31a81a08786826cc6e832bd0b49fb8b934e29648)
----
- src/bootstrap/config.rs | 3 ++-
- 1 file changed, 2 insertions(+), 1 deletion(-)
-
-diff --git a/src/bootstrap/config.rs b/src/bootstrap/config.rs
-index e192cda9a9a7..2b5d0b94e968 100644
---- a/src/bootstrap/config.rs
-+++ b/src/bootstrap/config.rs
-@@ -1805,7 +1805,8 @@ pub fn check_build_rustc_version(&self) {
-                 .unwrap();
-         if !(source_version == rustc_version
-             || (source_version.major == rustc_version.major
--                && source_version.minor == rustc_version.minor + 1))
-+                && (source_version.minor == rustc_version.minor
-+                    || source_version.minor == rustc_version.minor + 1)))
-         {
-             let prev_version = format!("{}.{}.x", source_version.major, source_version.minor - 1);
-             eprintln!(
--- 
-2.41.0
-
diff --git a/SOURCES/0001-bootstrap-only-show-PGO-warnings-when-verbose.patch b/SOURCES/0001-bootstrap-only-show-PGO-warnings-when-verbose.patch
new file mode 100644
index 0000000..ca36844
--- /dev/null
+++ b/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
+
diff --git a/SOURCES/0002-set-an-external-library-path-for-wasm32-wasi.patch b/SOURCES/0002-set-an-external-library-path-for-wasm32-wasi.patch
new file mode 100644
index 0000000..e2da2fe
--- /dev/null
+++ b/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
+
diff --git a/SOURCES/macros.rust-toolset b/SOURCES/macros.rust-toolset
index 41bb129..31cd56d 100644
--- a/SOURCES/macros.rust-toolset
+++ b/SOURCES/macros.rust-toolset
@@ -5,17 +5,47 @@
 #   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 %{_bindir}/env CARGO_HOME=.cargo %{_bindir}/cargo
-%__rustc %{_bindir}/rustc
-%__rustdoc %{_bindir}/rustdoc
+%__cargo /usr/bin/env CARGO_HOME=.cargo RUSTFLAGS='%{build_rustflags}' /usr/bin/cargo
+%__rustc /usr/bin/rustc
+%__rustdoc /usr/bin/rustdoc
 
-# Enable optimization, debuginfo, and link hardening.
-%__global_rustflags -Copt-level=3 -Cdebuginfo=2 -Clink-arg=-Wl,-z,relro,-z,now
+# rustflags_opt_level: default optimization level
+#
+# It corresponds to the "-Copt-level" rustc command line option.
+%rustflags_opt_level 3
 
-%__global_rustflags_toml [%{lua:
-    for arg in string.gmatch(rpm.expand("%{__global_rustflags}"), "%S+") do
-        print('"' .. arg .. '", ')
-    end}]
+# 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 \
@@ -23,7 +53,11 @@ cat > .cargo/config << EOF \
 [build]\
 rustc = "%{__rustc}"\
 rustdoc = "%{__rustdoc}"\
-rustflags = %{__global_rustflags_toml}\
+\
+[env]\
+CFLAGS = "%{build_cflags}"\
+CXXFLAGS = "%{build_cxxflags}"\
+LDFLAGS = "%{build_ldflags}"\
 \
 [install]\
 root = "%{buildroot}%{_prefix}"\
@@ -44,8 +78,104 @@ EOF\
 %endif\
 )
 
-%cargo_build %__cargo build --release %{?_smp_mflags}
+# __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}
+}
 
-%cargo_test %__cargo test --release %{?_smp_mflags} --no-fail-fast
+# 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_install %__cargo install --no-track --path .
+# 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                                                       \
+}
diff --git a/SOURCES/rustc-1.71.0-disable-http2.patch b/SOURCES/rustc-1.71.0-disable-http2.patch
deleted file mode 100644
index 34fdab3..0000000
--- a/SOURCES/rustc-1.71.0-disable-http2.patch
+++ /dev/null
@@ -1,92 +0,0 @@
---- rustc-beta-src/src/tools/cargo/Cargo.lock.orig	2023-07-07 17:30:04.817452621 -0700
-+++ rustc-beta-src/src/tools/cargo/Cargo.lock	2023-07-07 17:30:27.777988139 -0700
-@@ -734,7 +734,6 @@
- dependencies = [
-  "cc",
-  "libc",
-- "libnghttp2-sys",
-  "libz-sys",
-  "openssl-sys",
-  "pkg-config",
-@@ -1954,16 +1953,6 @@
- checksum = "348108ab3fba42ec82ff6e9564fc4ca0247bdccdc68dd8af9764bbc79c3c8ffb"
- 
- [[package]]
--name = "libnghttp2-sys"
--version = "0.1.7+1.45.0"
--source = "registry+https://github.com/rust-lang/crates.io-index"
--checksum = "57ed28aba195b38d5ff02b9170cbff627e336a20925e43b4945390401c5dc93f"
--dependencies = [
-- "cc",
-- "libc",
--]
--
--[[package]]
- name = "libz-sys"
- version = "1.1.8"
- source = "registry+https://github.com/rust-lang/crates.io-index"
---- rustc-beta-src/src/tools/cargo/Cargo.toml.orig	2023-07-07 17:30:04.819452581 -0700
-+++ rustc-beta-src/src/tools/cargo/Cargo.toml	2023-07-07 17:30:24.133061874 -0700
-@@ -118,7 +118,7 @@
- cargo-util.workspace = true
- clap = { workspace = true, features = ["wrap_help"] }
- crates-io.workspace = true
--curl = { workspace = true, features = ["http2"] }
-+curl = { workspace = true, features = [] }
- curl-sys.workspace = true
- env_logger.workspace = true
- filetime.workspace = true
---- rustc-beta-src/src/tools/cargo/src/cargo/core/package.rs.orig	2023-06-24 10:27:37.000000000 -0700
-+++ rustc-beta-src/src/tools/cargo/src/cargo/core/package.rs	2023-07-07 17:30:04.819452581 -0700
-@@ -407,16 +407,9 @@
-         sources: SourceMap<'cfg>,
-         config: &'cfg Config,
-     ) -> CargoResult<PackageSet<'cfg>> {
--        // We've enabled the `http2` feature of `curl` in Cargo, so treat
--        // failures here as fatal as it would indicate a build-time problem.
--        let mut multi = Multi::new();
--        let multiplexing = config.http_config()?.multiplexing.unwrap_or(true);
--        multi
--            .pipelining(false, multiplexing)
--            .with_context(|| "failed to enable multiplexing/pipelining in curl")?;
--
--        // let's not flood crates.io with connections
--        multi.set_max_host_connections(2)?;
-+        // Multiplexing is disabled because the system libcurl doesn't support it.
-+        let multi = Multi::new();
-+        let multiplexing = false;
- 
-         Ok(PackageSet {
-             packages: package_ids
---- rustc-beta-src/src/tools/cargo/src/cargo/sources/registry/http_remote.rs.orig	2023-06-24 10:27:37.000000000 -0700
-+++ rustc-beta-src/src/tools/cargo/src/cargo/sources/registry/http_remote.rs	2023-07-07 17:30:04.819452581 -0700
-@@ -229,16 +229,8 @@
-         }
-         self.fetch_started = true;
- 
--        // We've enabled the `http2` feature of `curl` in Cargo, so treat
--        // failures here as fatal as it would indicate a build-time problem.
--        self.multiplexing = self.config.http_config()?.multiplexing.unwrap_or(true);
--
--        self.multi
--            .pipelining(false, self.multiplexing)
--            .with_context(|| "failed to enable multiplexing/pipelining in curl")?;
--
--        // let's not flood the server with connections
--        self.multi.set_max_host_connections(2)?;
-+        // Multiplexing is disabled because the system libcurl doesn't support it.
-+        self.multiplexing = false;
- 
-         if !self.quiet {
-             self.config
---- rustc-beta-src/src/tools/cargo/src/cargo/util/network/mod.rs.orig	2023-06-24 10:27:37.000000000 -0700
-+++ rustc-beta-src/src/tools/cargo/src/cargo/util/network/mod.rs	2023-07-07 17:30:04.819452581 -0700
-@@ -26,7 +26,7 @@
- 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);
-             }
diff --git a/SOURCES/rustc-1.71.0-disable-libssh2.patch b/SOURCES/rustc-1.71.0-disable-libssh2.patch
deleted file mode 100644
index ba61454..0000000
--- a/SOURCES/rustc-1.71.0-disable-libssh2.patch
+++ /dev/null
@@ -1,42 +0,0 @@
---- rustc-beta-src/src/tools/cargo/Cargo.lock.orig	2023-06-24 10:27:37.000000000 -0700
-+++ rustc-beta-src/src/tools/cargo/Cargo.lock	2023-07-07 17:12:23.406932870 -0700
-@@ -1942,7 +1942,6 @@
- dependencies = [
-  "cc",
-  "libc",
-- "libssh2-sys",
-  "libz-sys",
-  "openssl-sys",
-  "pkg-config",
-@@ -1965,20 +1964,6 @@
- ]
- 
- [[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 = "1.1.8"
- source = "registry+https://github.com/rust-lang/crates.io-index"
---- rustc-beta-src/src/tools/cargo/Cargo.toml.orig	2023-06-24 10:27:37.000000000 -0700
-+++ rustc-beta-src/src/tools/cargo/Cargo.toml	2023-07-07 17:12:00.688392750 -0700
-@@ -31,7 +31,7 @@
- filetime = "0.2.9"
- flate2 = { version = "1.0.3", default-features = false, features = ["zlib"] }
- fwdansi = "1.1.0"
--git2 = "0.17.1"
-+git2 = { version = "0.17.1", default-features = false, features = ["https"] }
- git2-curl = "0.18.0"
- gix = { version = "0.44.1", default-features = false, features = ["blocking-http-transport-curl", "progress-tree"] }
- gix-features-for-configuration-only = { version = "0.29.0", package = "gix-features", features = [ "parallel" ] }
diff --git a/SOURCES/rustc-1.75.0-disable-libssh2.patch b/SOURCES/rustc-1.75.0-disable-libssh2.patch
new file mode 100644
index 0000000..2b06046
--- /dev/null
+++ b/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" ] }
diff --git a/SPECS/rust.spec b/SPECS/rust.spec
index a6c5c42..af52df5 100644
--- a/SPECS/rust.spec
+++ b/SPECS/rust.spec
@@ -1,16 +1,22 @@
+Name:           rust
+Version:        1.75.0
+Release:        1%{?dist}
+Summary:        The Rust Programming Language
+License:        (Apache-2.0 OR MIT) AND (Artistic-2.0 AND BSD-3-Clause AND ISC AND MIT AND MPL-2.0 AND Unicode-DFS-2016)
+# ^ written as: (rust itself) and (bundled libraries)
+URL:            https://www.rust-lang.org
+
 # Only x86_64, i686, and aarch64 are Tier 1 platforms at this time.
 # https://doc.rust-lang.org/nightly/rustc/platform-support.html
 %global rust_arches x86_64 i686 aarch64 ppc64le s390x
-
-# The channel can be stable, beta, or nightly
-%{!?channel: %global channel stable}
+ExclusiveArch:  %{rust_arches}
 
 # To bootstrap from scratch, set the channel and date from src/stage0.json
 # e.g. 1.59.0 wants rustc: 1.58.0-2022-01-13
 # or nightly wants some beta-YYYY-MM-DD
-%global bootstrap_version 1.70.0
-%global bootstrap_channel 1.70.0
-%global bootstrap_date 2023-06-01
+%global bootstrap_version 1.74.0
+%global bootstrap_channel 1.74.0
+%global bootstrap_date 2023-11-16
 
 # Only the specified arches will use bootstrap binaries.
 # NOTE: Those binaries used to be uploaded with every new release, but that was
@@ -30,42 +36,51 @@
 %if 0%{?fedora}
 %global mingw_targets i686-pc-windows-gnu x86_64-pc-windows-gnu
 %endif
-%if 0%{?fedora} || 0%{?rhel} >= 8
 %global wasm_targets wasm32-unknown-unknown wasm32-wasi
+%if 0%{?fedora} || 0%{?rhel} >= 10
+%global extra_targets x86_64-unknown-none x86_64-unknown-uefi
 %endif
 %endif
+%global all_targets %{?mingw_targets} %{?wasm_targets} %{?extra_targets}
+%define target_enabled() %{lua:
+  print(string.find(rpm.expand(" %{all_targets} "), rpm.expand(" %1 "), 1, true) or 0)
+}
 
 # We need CRT files for *-wasi targets, at least as new as the commit in
 # src/ci/docker/host-x86_64/dist-various-2/build-wasi-toolchain.sh
 # (updated per https://github.com/rust-lang/rust/pull/96907)
 %global wasi_libc_url https://github.com/WebAssembly/wasi-libc
-%global wasi_libc_ref wasi-sdk-20
+#global wasi_libc_ref wasi-sdk-20
+%global wasi_libc_ref bd950eb128bff337153de217b11270f948d04bb4
 %global wasi_libc_name wasi-libc-%{wasi_libc_ref}
 %global wasi_libc_source %{wasi_libc_url}/archive/%{wasi_libc_ref}/%{wasi_libc_name}.tar.gz
 %global wasi_libc_dir %{_builddir}/%{wasi_libc_name}
+%if 0%{?fedora}
+%bcond_with bundled_wasi_libc
+%else
+%bcond_without bundled_wasi_libc
+%endif
 
 # Using llvm-static may be helpful as an opt-in, e.g. to aid LLVM rebases.
 %bcond_with llvm_static
 
 # We can also choose to just use Rust's bundled LLVM, in case the system LLVM
-# is insufficient.  Rust currently requires LLVM 14.0+.
-%global min_llvm_version 14.0.0
-%global bundled_llvm_version 16.0.5
+# is insufficient.  Rust currently requires LLVM 15.0+.
+%global min_llvm_version 15.0.0
+%global bundled_llvm_version 17.0.5
 %bcond_with bundled_llvm
 
-# Requires stable libgit2 1.6, and not the next minor soname change.
+# Requires stable libgit2 1.7, and not the next minor soname change.
 # This needs to be consistent with the bindings in vendor/libgit2-sys.
-%global min_libgit2_version 1.6.4
-%global next_libgit2_version 1.7.0~
-%global bundled_libgit2_version 1.6.4
-%if 0%{?fedora} >= 38
+%global min_libgit2_version 1.7.1
+%global next_libgit2_version 1.8.0~
+%global bundled_libgit2_version 1.7.1
+%if 0%{?fedora} >= 39
 %bcond_with bundled_libgit2
 %else
 %bcond_without bundled_libgit2
 %endif
 
-# needs libssh2_userauth_publickey_frommemory
-%global min_libssh2_version 1.6.0
 %if 0%{?rhel}
 # Disable cargo->libgit2->libssh2 on RHEL, as it's not approved for FIPS (rhbz1732949)
 %bcond_without disabled_libssh2
@@ -73,39 +88,26 @@
 %bcond_with disabled_libssh2
 %endif
 
-%if 0%{?rhel} && 0%{?rhel} < 8
-%bcond_with curl_http2
+%if 0%{?__isa_bits} == 32
+# Disable PGO on 32-bit to reduce build memory
+%bcond_with rustc_pgo
 %else
-%bcond_without curl_http2
+%bcond_without rustc_pgo
 %endif
 
-# LLDB isn't available everywhere...
-%if 0%{?rhel} && 0%{?rhel} < 8
-%bcond_with lldb
-%else
-%bcond_without lldb
-%endif
-
-Name:           rust
-Version:        1.71.1
-Release:        1%{?dist}
-Summary:        The Rust Programming Language
-License:        (ASL 2.0 or MIT) and (BSD and MIT)
-# ^ written as: (rust itself) and (bundled libraries)
-URL:            https://www.rust-lang.org
-ExclusiveArch:  %{rust_arches}
-
-%if "%{channel}" == "stable"
-%global rustc_package rustc-%{version}-src
-%else
-%global rustc_package rustc-%{channel}-src
-%endif
+# Detect non-stable channels from the version, like 1.74.0~beta.1
+%{lua: do
+  local version = rpm.expand("%{version}")
+  local version_channel, subs = string.gsub(version, "^.*~(%w+).*$", "%1", 1)
+  rpm.define("channel " .. (subs ~= 0 and version_channel or "stable"))
+  rpm.define("rustc_package rustc-" .. version_channel .. "-src")
+end}
 Source0:        https://static.rust-lang.org/dist/%{rustc_package}.tar.xz
 Source1:        %{wasi_libc_source}
 # Sources for bootstrap_arches are inserted by lua below
 
-# By default, rust tries to use "rust-lld" as a linker for WebAssembly.
-Patch1:         0001-Use-lld-provided-by-system-for-wasm.patch
+# By default, rust tries to use "rust-lld" as a linker for some targets.
+Patch1:         0001-Use-lld-provided-by-system.patch
 
 # Set a substitute-path in rust-gdb for standard library sources.
 Patch2:         rustc-1.70.0-rust-gdb-substitute-path.patch
@@ -114,12 +116,14 @@ Patch2:         rustc-1.70.0-rust-gdb-substitute-path.patch
 # TODO: upstream this ability into the actual build configuration
 Patch3:         0001-Let-environment-variables-override-some-default-CPUs.patch
 
-# Enable the profiler runtime for native hosts
-# https://github.com/rust-lang/rust/pull/114069
-Patch4:         0001-Allow-using-external-builds-of-the-compiler-rt-profi.patch
+# Override the default self-contained system libraries
+# TODO: the first can probably be upstreamed, but the second is hard-coded,
+# and we're only applying that if not with bundled_wasi_libc.
+Patch4:         0001-bootstrap-allow-disabling-target-self-contained.patch
+Patch5:         0002-set-an-external-library-path-for-wasm32-wasi.patch
 
-# https://github.com/rust-lang/rust/pull/114440
-Patch5:         0001-bootstrap-config-fix-version-comparison-bug.patch
+# https://github.com/rust-lang/rust/pull/117982
+Patch6:         0001-bootstrap-only-show-PGO-warnings-when-verbose.patch
 
 ### RHEL-specific patches below ###
 
@@ -127,11 +131,7 @@ Patch5:         0001-bootstrap-config-fix-version-comparison-bug.patch
 Source100:      macros.rust-toolset
 
 # Disable cargo->libgit2->libssh2 on RHEL, as it's not approved for FIPS (rhbz1732949)
-Patch100:       rustc-1.71.0-disable-libssh2.patch
-
-# libcurl on RHEL7 doesn't have http2, but since cargo requests it, curl-sys
-# will try to build it statically -- instead we turn off the feature.
-Patch101:       rustc-1.71.0-disable-http2.patch
+Patch100:       rustc-1.75.0-disable-libssh2.patch
 
 # Get the Rust triple for any arch.
 %{lua: function rust_triple(arch)
@@ -149,14 +149,12 @@ Patch101:       rustc-1.71.0-disable-http2.patch
   return arch.."-unknown-linux-"..abi
 end}
 
-# Get the environment form of a Rust triple
-%{lua: function rust_triple_env(triple)
-  local sub = string.gsub(triple, "-", "_")
-  return string.upper(sub)
-end}
-
 %global rust_triple %{lua: print(rust_triple(rpm.expand("%{_target_cpu}")))}
-%global rust_triple_env %{lua: print(rust_triple_env(rpm.expand("%{rust_triple}")))}
+
+# Get the environment form of the Rust triple
+%global rust_triple_env %{lua:
+  print(string.upper(string.gsub(rpm.expand("%{rust_triple}"), "-", "_")))
+}
 
 %if %defined bootstrap_arches
 # For each bootstrap arch, add an additional binary Source.
@@ -190,12 +188,7 @@ end}
 Provides:       bundled(%{name}-bootstrap) = %{bootstrap_version}
 %else
 BuildRequires:  cargo >= %{bootstrap_version}
-%if 0%{?rhel} && 0%{?rhel} < 8
-BuildRequires:  %{name} >= %{bootstrap_version}
-BuildConflicts: %{name} > %{version}
-%else
 BuildRequires:  (%{name} >= %{bootstrap_version} with %{name} <= %{version})
-%endif
 %global local_rust_root %{_prefix}
 %endif
 
@@ -215,7 +208,7 @@ BuildRequires:  (pkgconfig(libgit2) >= %{min_libgit2_version} with pkgconfig(lib
 %endif
 
 %if %{without disabled_libssh2}
-BuildRequires:  pkgconfig(libssh2) >= %{min_libssh2_version}
+BuildRequires:  pkgconfig(libssh2)
 %endif
 
 %if 0%{?rhel} == 8
@@ -226,14 +219,11 @@ BuildRequires:  python3
 BuildRequires:  python3-rpm-macros
 
 %if %with bundled_llvm
-BuildRequires:  cmake3 >= 3.13.4
+BuildRequires:  cmake >= 3.20.0
 BuildRequires:  ninja-build
 Provides:       bundled(llvm) = %{bundled_llvm_version}
 %else
-BuildRequires:  cmake >= 2.8.11
-%if 0%{?epel} == 7
-%global llvm llvm14
-%endif
+BuildRequires:  cmake >= 3.5.1
 %if %defined llvm
 %global llvm_root %{_libdir}/%{llvm}
 %else
@@ -268,20 +258,7 @@ Requires:       %{name}-std-static%{?_isa} = %{version}-%{release}
 # https://github.com/rust-lang/rust/issues/11937
 Requires:       /usr/bin/cc
 
-%if 0%{?epel} == 7
-%global devtoolset_name devtoolset-11
-BuildRequires:  %{devtoolset_name}-binutils
-BuildRequires:  %{devtoolset_name}-gcc
-BuildRequires:  %{devtoolset_name}-gcc-c++
-%global devtoolset_bindir /opt/rh/%{devtoolset_name}/root/usr/bin
-%global __cc     %{devtoolset_bindir}/gcc
-%global __cxx    %{devtoolset_bindir}/g++
-%global __ar     %{devtoolset_bindir}/ar
-%global __ranlib %{devtoolset_bindir}/ranlib
-%global __strip  %{devtoolset_bindir}/strip
-%else
 %global __ranlib %{_bindir}/ranlib
-%endif
 
 # ALL Rust libraries are private, because they don't keep an ABI.
 %global _privatelibs lib(.*-[[:xdigit:]]{16}*|rustc.*)[.]so.*
@@ -293,14 +270,7 @@ BuildRequires:  %{devtoolset_name}-gcc-c++
 # While we don't want to encourage dynamic linking to Rust shared libraries, as
 # there's no stable ABI, we still need the unallocated metadata (.rustc) to
 # support custom-derive plugins like #[proc_macro_derive(Foo)].
-%if 0%{?rhel} && 0%{?rhel} < 8
-# eu-strip is very eager by default, so we have to limit it to -g, only debugging symbols.
-%global _find_debuginfo_opts -g
-%undefine _include_minidebuginfo
-%else
-# Newer find-debuginfo.sh supports --keep-section, which is preferable. rhbz1465997
 %global _find_debuginfo_opts --keep-section .rustc
-%endif
 
 %if %{without bundled_llvm}
 %if "%{llvm_root}" == "%{_prefix}" || 0%{?scl:1}
@@ -325,7 +295,11 @@ BuildRequires:  mingw64-winpthreads-static
 %endif
 
 %if %defined wasm_targets
+%if %with bundled_wasi_libc
 BuildRequires:  clang
+%else
+BuildRequires:  wasi-libc-static
+%endif
 BuildRequires:  lld
 # brp-strip-static-archive breaks the archive index for wasm
 %global __os_install_post \
@@ -334,10 +308,8 @@ find '%{buildroot}%{rustlibdir}'/wasm*/lib -type f -regex '.*\\.\\(a\\|rlib\\)'
 %{nil}
 %endif
 
-%if 0%{?fedora} || 0%{?rhel} >= 8
 # For profiler_builtins
 BuildRequires:  compiler-rt
-%endif
 
 # This component was removed as of Rust 1.69.0.
 # https://github.com/rust-lang/rust/pull/101841
@@ -360,66 +332,69 @@ Requires:       glibc-devel%{?_isa} >= 2.17
 This package includes the standard libraries for building applications
 written in Rust.
 
-%if %defined mingw_targets
-%{lua: do
-  for triple in string.gmatch(rpm.expand("%{mingw_targets}"), "%S+") do
-    local subs = {
-      triple = triple,
-      name = rpm.expand("%{name}"),
-      verrel = rpm.expand("%{version}-%{release}"),
-      mingw = string.sub(triple, 1, 4) == "i686" and "mingw32" or "mingw64",
-    }
-    local s = string.gsub([[
+%global target_package()                        \
+%package std-static-%1                          \
+Summary:        Standard library for Rust %1    \
+Requires:       %{name} = %{version}-%{release}
 
-%package std-static-{{triple}}
-Summary:        Standard library for Rust {{triple}}
+%global target_description()                                            \
+%description std-static-%1                                              \
+This package includes the standard libraries for building applications  \
+written in Rust for the %2 target %1.
+
+%if %target_enabled i686-pc-windows-gnu
+%target_package i686-pc-windows-gnu
+Requires:       mingw32-crt
+Requires:       mingw32-gcc
+Requires:       mingw32-winpthreads-static
+Provides:       mingw32-rust = %{version}-%{release}
+Provides:       mingw32-rustc = %{version}-%{release}
 BuildArch:      noarch
-Provides:       {{mingw}}-rust = {{verrel}}
-Provides:       {{mingw}}-rustc = {{verrel}}
-Requires:       {{mingw}}-crt
-Requires:       {{mingw}}-gcc
-Requires:       {{mingw}}-winpthreads-static
-Requires:       {{name}} = {{verrel}}
-
-%description std-static-{{triple}}
-This package includes the standard libraries for building applications
-written in Rust for the MinGW target {{triple}}.
-
-]], "{{(%w+)}}", subs)
-    print(s)
-  end
-end}
+%target_description i686-pc-windows-gnu MinGW
 %endif
 
-%if %defined wasm_targets
-%{lua: do
-  for triple in string.gmatch(rpm.expand("%{wasm_targets}"), "%S+") do
-    local subs = {
-      triple = triple,
-      name = rpm.expand("%{name}"),
-      verrel = rpm.expand("%{version}-%{release}"),
-      wasi = string.find(triple, "-wasi") and 1 or 0,
-    }
-    local s = string.gsub([[
+%if %target_enabled x86_64-pc-windows-gnu
+%target_package x86_64-pc-windows-gnu
+Requires:       mingw64-crt
+Requires:       mingw64-gcc
+Requires:       mingw64-winpthreads-static
+Provides:       mingw64-rust = %{version}-%{release}
+Provides:       mingw64-rustc = %{version}-%{release}
+BuildArch:      noarch
+%target_description x86_64-pc-windows-gnu MinGW
+%endif
 
-%package std-static-{{triple}}
-Summary:        Standard library for Rust {{triple}}
+%if %target_enabled wasm32-unknown-unknown
+%target_package wasm32-unknown-unknown
+Requires:       lld >= 8.0
 # FIX: we can't be noarch while excluding s390x for lack of lld
 # BuildArch:      noarch
-Requires:       {{name}} = {{verrel}}
-Requires:       lld >= 8.0
-%if {{wasi}}
-Provides:       bundled(wasi-libc)
+%target_description wasm32-unknown-unknown WebAssembly
 %endif
 
-%description std-static-{{triple}}
-This package includes the standard libraries for building applications
-written in Rust for the WebAssembly target {{triple}}.
+%if %target_enabled wasm32-wasi
+%target_package wasm32-wasi
+Requires:       lld >= 8.0
+%if %with bundled_wasi_libc
+Provides:       bundled(wasi-libc)
+%else
+Requires:       wasi-libc-static
+%endif
+# FIX: we can't be noarch while excluding s390x for lack of lld
+# BuildArch:      noarch
+%target_description wasm32-wasi WebAssembly
+%endif
 
-]], "{{(%w+)}}", subs)
-    print(s)
-  end
-end}
+%if %target_enabled x86_64-unknown-none
+%target_package x86_64-unknown-none
+Requires:       lld
+%target_description x86_64-unknown-none embedded
+%endif
+
+%if %target_enabled x86_64-unknown-uefi
+%target_package x86_64-unknown-uefi
+Requires:       lld
+%target_description x86_64-unknown-uefi embedded
 %endif
 
 
@@ -442,8 +417,6 @@ This package includes the rust-gdb script, which allows easier debugging of Rust
 programs.
 
 
-%if %with lldb
-
 %package lldb
 Summary:        LLDB pretty printers for Rust
 BuildArch:      noarch
@@ -455,8 +428,6 @@ Requires:       %{name}-debugger-common = %{version}-%{release}
 This package includes the rust-lldb script, which allows easier debugging of Rust
 programs.
 
-%endif
-
 
 %package doc
 Summary:        Documentation for Rust
@@ -500,6 +471,9 @@ and ensure that you'll always get a repeatable build.
 Summary:        Tool to find and fix Rust formatting issues
 Requires:       cargo
 
+# /usr/bin/rustfmt is dynamically linked against internal rustc libs
+Requires:       %{name}%{?_isa} = %{version}-%{release}
+
 # The component/package was rustfmt-preview until Rust 1.31.
 Obsoletes:      rustfmt-preview < 1.0.0
 Provides:       rustfmt-preview = %{version}-%{release}
@@ -512,11 +486,7 @@ A tool for formatting Rust code according to style guidelines.
 Summary:        Rust implementation of the Language Server Protocol
 
 # The standard library sources are needed for most functionality.
-%if 0%{?rhel} && 0%{?rhel} < 8
-Requires:       %{name}-src
-%else
 Recommends:     %{name}-src
-%endif
 
 # RLS is no longer available as of Rust 1.65, but we're including the stub
 # binary that implements LSP just enough to recommend rust-analyzer.
@@ -547,11 +517,7 @@ A collection of lints to catch common mistakes and improve your Rust code.
 %package src
 Summary:        Sources for the Rust standard library
 BuildArch:      noarch
-%if 0%{?rhel} && 0%{?rhel} < 8
-Requires:       %{name}-std-static = %{version}-%{release}
-%else
 Recommends:     %{name}-std-static = %{version}-%{release}
-%endif
 
 %description src
 This package includes source files for the Rust standard library.  It may be
@@ -587,8 +553,9 @@ test -f '%{local_rust_root}/bin/cargo'
 test -f '%{local_rust_root}/bin/rustc'
 %endif
 
-%if %defined wasm_targets
+%if %{defined wasm_targets} && %{with bundled_wasi_libc}
 %setup -q -n %{wasi_libc_name} -T -b 1
+rm -rf %{wasi_libc_dir}/dlmalloc/
 %endif
 
 %setup -q -n %{rustc_package}
@@ -597,17 +564,15 @@ test -f '%{local_rust_root}/bin/rustc'
 %patch -P2 -p1
 %patch -P3 -p1
 %patch -P4 -p1
+%if %without bundled_wasi_libc
 %patch -P5 -p1
+%endif
+%patch -P6 -p1
 
 %if %with disabled_libssh2
 %patch -P100 -p1
 %endif
 
-%if %without curl_http2
-%patch -P101 -p1
-rm -rf vendor/libnghttp2-sys*/
-%endif
-
 # Use our explicit python3 first
 sed -i.try-python -e '/^try python3 /i try "%{__python3}" "$@"' ./configure
 
@@ -619,18 +584,21 @@ rm -rf src/llvm-project/
 mkdir -p src/llvm-project/libunwind/
 %endif
 
-# Remove other unused vendored libraries
-rm -rf vendor/curl-sys*/curl/
-rm -rf vendor/*jemalloc-sys*/jemalloc/
-rm -rf vendor/libffi-sys*/libffi/
-rm -rf vendor/libmimalloc-sys*/c_src/mimalloc/
-rm -rf vendor/libssh2-sys*/libssh2/
-rm -rf vendor/libz-sys*/src/zlib{,-ng}/
-rm -rf vendor/lzma-sys*/xz-*/
-rm -rf vendor/openssl-src*/openssl/
+
+# Remove other unused vendored libraries. This leaves the directory in place,
+# because some build scripts watch them, e.g. "cargo:rerun-if-changed=curl".
+%define clear_dir() find ./%1 -mindepth 1 -delete
+%clear_dir vendor/curl-sys*/curl/
+%clear_dir vendor/*jemalloc-sys*/jemalloc/
+%clear_dir vendor/libffi-sys*/libffi/
+%clear_dir vendor/libmimalloc-sys*/c_src/mimalloc/
+%clear_dir vendor/libssh2-sys*/libssh2/
+%clear_dir vendor/libz-sys*/src/zlib{,-ng}/
+%clear_dir vendor/lzma-sys*/xz-*/
+%clear_dir vendor/openssl-src*/openssl/
 
 %if %without bundled_libgit2
-rm -rf vendor/libgit2-sys*/libgit2/
+%clear_dir vendor/libgit2-sys*/libgit2/
 %endif
 
 %if %with disabled_libssh2
@@ -638,13 +606,7 @@ rm -rf vendor/libssh2-sys*/
 %endif
 
 # This only affects the transient rust-installer, but let it use our dynamic xz-libs
-sed -i.lzma -e '/LZMA_API_STATIC/d' src/bootstrap/tool.rs
-
-%if %{with bundled_llvm} && 0%{?epel} == 7
-mkdir -p cmake-bin
-ln -s /usr/bin/cmake3 cmake-bin/cmake
-%global cmake_path $PWD/cmake-bin
-%endif
+sed -i.lzma -e '/LZMA_API_STATIC/d' src/bootstrap/src/core/build_steps/tool.rs
 
 %if %{without bundled_llvm} && %{with llvm_static}
 # Static linking to distro LLVM needs to add -lffi
@@ -670,7 +632,7 @@ find -name '*.rs' -type f -perm /111 -exec chmod -v -x '{}' '+'
 %endif
 
 # These are similar to __cflags_arch_* in /usr/lib/rpm/redhat/macros
-%{lua: function rustc_target_cpus()
+%global rustc_target_cpus %{lua: do
   local fedora = tonumber(rpm.expand("0%{?fedora}"))
   local rhel = tonumber(rpm.expand("0%{?rhel}"))
   local env =
@@ -679,14 +641,11 @@ find -name '*.rs' -type f -perm /111 -exec chmod -v -x '{}' '+'
     .. " RUSTC_TARGET_CPU_S390X=" ..
         ((rhel >= 9) and "z14" or (rhel == 8 or fedora >= 38) and "z13" or
          (fedora >= 26) and "zEC12" or (rhel == 7) and "z196" or "z10")
-  return env
+  print(env)
 end}
 
 # Set up shared environment variables for build/install/check
-%global rust_env %{?rustflags:RUSTFLAGS="%{rustflags}"} %{lua: print(rustc_target_cpus())}
-%if %defined cmake_path
-%global rust_env %{?rust_env} PATH="%{cmake_path}:$PATH"
-%endif
+%global rust_env %{?rustflags:RUSTFLAGS="%{rustflags}"} %{rustc_target_cpus}
 %if %without disabled_libssh2
 # convince libssh2-sys to use the distro libssh2
 %global rust_env %{?rust_env} LIBSSH2_SYS_USE_PKG_CONFIG=1
@@ -697,17 +656,13 @@ end}
 %{export_rust_env}
 
 %ifarch %{arm} %{ix86}
-# full debuginfo is exhausting memory; just do libstd for now
+# full debuginfo and compiler opts are exhausting memory; just do libstd for now
 # https://github.com/rust-lang/rust/issues/45854
-%if 0%{?rhel} && 0%{?rhel} < 8
-# Older rpmbuild didn't work with partial debuginfo coverage.
-%global debug_package %{nil}
-%define enable_debuginfo --debuginfo-level=0
-%else
 %define enable_debuginfo --debuginfo-level=0 --debuginfo-level-std=2
-%endif
+%define enable_rust_opts --set rust.codegen-units-std=1
 %else
 %define enable_debuginfo --debuginfo-level=2
+%define enable_rust_opts --set rust.codegen-units=1 --set rust.lto=thin
 %endif
 
 # Some builders have relatively little memory for their CPU count.
@@ -719,45 +674,40 @@ if [ "$max_cpus" -ge 1 -a "$max_cpus" -lt "$ncpus" ]; then
 fi
 
 %if %defined mingw_targets
-%{lua: do
-  local cfg = ""
-  for triple in string.gmatch(rpm.expand("%{mingw_targets}"), "%S+") do
-    local subs = {
-      triple = triple,
-      mingw = string.sub(triple, 1, 4) == "i686" and "mingw32" or "mingw64",
-    }
-    local s = string.gsub([[
-      --set target.{{triple}}.linker=%{{{mingw}}_cc}
-      --set target.{{triple}}.cc=%{{{mingw}}_cc}
-      --set target.{{triple}}.ar=%{{{mingw}}_ar}
-      --set target.{{triple}}.ranlib=%{{{mingw}}_ranlib}
-    ]], "{{(%w+)}}", subs)
-    cfg = cfg .. " " .. s
-  end
-  cfg = string.gsub(cfg, "%s+", " ")
-  rpm.define("mingw_target_config " .. cfg)
-end}
+%define mingw_target_config %{shrink:
+  --set target.i686-pc-windows-gnu.linker=%{mingw32_cc}
+  --set target.i686-pc-windows-gnu.cc=%{mingw32_cc}
+  --set target.i686-pc-windows-gnu.ar=%{mingw32_ar}
+  --set target.i686-pc-windows-gnu.ranlib=%{mingw32_ranlib}
+  --set target.i686-pc-windows-gnu.self-contained=false
+  --set target.x86_64-pc-windows-gnu.linker=%{mingw64_cc}
+  --set target.x86_64-pc-windows-gnu.cc=%{mingw64_cc}
+  --set target.x86_64-pc-windows-gnu.ar=%{mingw64_ar}
+  --set target.x86_64-pc-windows-gnu.ranlib=%{mingw64_ranlib}
+  --set target.x86_64-pc-windows-gnu.self-contained=false
+}
 %endif
 
 %if %defined wasm_targets
-%make_build --quiet -C %{wasi_libc_dir} CC=clang AR=llvm-ar NM=llvm-nm
-%{lua: do
-  local wasi_root = rpm.expand("%{wasi_libc_dir}") .. "/sysroot"
-  local cfg = ""
-  for triple in string.gmatch(rpm.expand("%{wasm_targets}"), "%S+") do
-    if string.find(triple, "-wasi") then
-      cfg = cfg .. " --set target." .. triple .. ".wasi-root=" .. wasi_root
-    end
-  end
-  rpm.define("wasm_target_config "..cfg)
-end}
+%if %with bundled_wasi_libc
+%make_build --quiet -C %{wasi_libc_dir} MALLOC_IMPL=emmalloc CC=clang AR=llvm-ar NM=llvm-nm
+%define wasm_target_config --set target.wasm32-wasi.wasi-root=%{wasi_libc_dir}/sysroot
+%else
+%define wasm_target_config %{shrink:
+  --set target.wasm32-wasi.wasi-root=%{_prefix}/wasm32-wasi
+  --set target.wasm32-wasi.self-contained=false
+}
+%endif
 %endif
 
-%if 0%{?fedora} || 0%{?rhel} >= 8
-# The exact profiler path is version dependent, and uses LLVM-specific
-# arch names in the filename, but this find is good enough for now...
-PROFILER=$(find %{_libdir}/clang -type f -name 'libclang_rt.profile-*.a')
+# Find the compiler-rt library for the Rust profiler_builtins crate.
+%if 0%{?clang_major_version} >= 17
+%define profiler %{clang_resource_dir}/lib/%{_arch}-redhat-linux-gnu/libclang_rt.profile.a
+%else
+# The exact profiler path is version dependent..
+%define profiler %(echo %{_libdir}/clang/??/lib/libclang_rt.profile-*.a)
 %endif
+test -r "%{profiler}"
 
 %configure --disable-option-checking \
   --libdir=%{common_libdir} \
@@ -767,7 +717,7 @@ PROFILER=$(find %{_libdir}/clang -type f -name 'libclang_rt.profile-*.a')
   --set target.%{rust_triple}.cxx=%{__cxx} \
   --set target.%{rust_triple}.ar=%{__ar} \
   --set target.%{rust_triple}.ranlib=%{__ranlib} \
-  ${PROFILER:+--set target.%{rust_triple}.profiler="$PROFILER"} \
+  --set target.%{rust_triple}.profiler="%{profiler}" \
   %{?mingw_target_config} \
   %{?wasm_target_config} \
   --python=%{__python3} \
@@ -779,7 +729,7 @@ PROFILER=$(find %{_libdir}/clang -type f -name 'libclang_rt.profile-*.a')
   --disable-llvm-static-stdcpp \
   --disable-rpath \
   %{enable_debuginfo} \
-  --set rust.codegen-units-std=1 \
+  %{enable_rust_opts} \
   --set build.build-stage=2 \
   --set build.doc-stage=2 \
   --set build.install-stage=2 \
@@ -792,11 +742,32 @@ PROFILER=$(find %{_libdir}/clang -type f -name 'libclang_rt.profile-*.a')
   --release-channel=%{channel} \
   --release-description="%{?fedora:Fedora }%{?rhel:Red Hat }%{version}-%{release}"
 
-%{__python3} ./x.py build -j "$ncpus"
-%{__python3} ./x.py doc
+%global __x %{__python3} ./x.py
+%global __xk %{__x} --keep-stage=0 --keep-stage=1
 
-for triple in %{?mingw_targets} %{?wasm_targets}; do
-  %{__python3} ./x.py build --target=$triple std
+%if %with rustc_pgo
+# Build the compiler with profile instrumentation
+PROFRAW="$PWD/build/profiles"
+PROFDATA="$PWD/build/rustc.profdata"
+mkdir -p "$PROFRAW"
+%{__x} build -j "$ncpus" sysroot --rust-profile-generate="$PROFRAW"
+# Build cargo as a workload to generate compiler profiles
+env LLVM_PROFILE_FILE="$PROFRAW/default_%%m_%%p.profraw" %{__xk} build cargo
+llvm-profdata merge -o "$PROFDATA" "$PROFRAW"
+rm -r "$PROFRAW" build/%{rust_triple}/stage2*/
+# Rebuild the compiler using the profile data
+%{__x} build -j "$ncpus" sysroot --rust-profile-use="$PROFDATA"
+%else
+# Build the compiler without PGO
+%{__x} build -j "$ncpus" sysroot
+%endif
+
+# Build everything else normally
+%{__xk} build
+%{__xk} doc
+
+for triple in %{?all_targets} ; do
+  %{__xk} build --target=$triple std
 done
 
 %install
@@ -805,10 +776,10 @@ done
 %endif
 %{export_rust_env}
 
-DESTDIR=%{buildroot} %{__python3} ./x.py install
+DESTDIR=%{buildroot} %{__xk} install
 
-for triple in %{?mingw_targets} %{?wasm_targets}; do
-  DESTDIR=%{buildroot} %{__python3} ./x.py install --target=$triple std
+for triple in %{?all_targets} ; do
+  DESTDIR=%{buildroot} %{__xk} install --target=$triple std
 done
 
 # The rls stub doesn't have an install target, but we can just copy it.
@@ -878,11 +849,6 @@ mkdir -p %{buildroot}%{_datadir}/cargo/registry
 mkdir -p %{buildroot}%{_docdir}/cargo
 ln -sT ../rust/html/cargo/ %{buildroot}%{_docdir}/cargo/html
 
-%if %without lldb
-rm -f %{buildroot}%{_bindir}/rust-lldb
-rm -f %{buildroot}%{rustlibdir}/etc/lldb_*
-%endif
-
 # We don't want Rust copies of LLVM tools (rust-lld, rust-llvm-dwp)
 rm -f %{buildroot}%{rustlibdir}/%{rust_triple}/bin/rust-ll*
 
@@ -899,34 +865,41 @@ rm -f %{buildroot}%{rustlibdir}/%{rust_triple}/bin/rust-ll*
 %{export_rust_env}
 
 # Sanity-check the installed binaries, debuginfo-stripped and all.
-%{buildroot}%{_bindir}/cargo new build/hello-world
-env RUSTC=%{buildroot}%{_bindir}/rustc \
-    LD_LIBRARY_PATH="%{buildroot}%{_libdir}:$LD_LIBRARY_PATH" \
-    %{buildroot}%{_bindir}/cargo run --manifest-path build/hello-world/Cargo.toml
+TMP_HELLO=$(mktemp -d)
+(
+  cd "$TMP_HELLO"
+  export RUSTC=%{buildroot}%{_bindir}/rustc \
+    LD_LIBRARY_PATH="%{buildroot}%{_libdir}:$LD_LIBRARY_PATH"
+  %{buildroot}%{_bindir}/cargo init --name hello-world
+  %{buildroot}%{_bindir}/cargo run --verbose
 
-# Try a build sanity-check for other targets
-for triple in %{?mingw_targets} %{?wasm_targets}; do
-  env RUSTC=%{buildroot}%{_bindir}/rustc \
-      LD_LIBRARY_PATH="%{buildroot}%{_libdir}:$LD_LIBRARY_PATH" \
-      %{buildroot}%{_bindir}/cargo build --manifest-path build/hello-world/Cargo.toml --target=$triple
-done
+  # Sanity-check that code-coverage builds and runs
+  env RUSTFLAGS="-Cinstrument-coverage" %{buildroot}%{_bindir}/cargo run --verbose
+  test -r default_*.profraw
+
+  # Try a build sanity-check for other std-enabled targets
+  for triple in %{?mingw_targets} %{?wasm_targets}; do
+    %{buildroot}%{_bindir}/cargo build --verbose --target=$triple
+  done
+)
+rm -rf "$TMP_HELLO"
 
 # The results are not stable on koji, so mask errors and just log it.
 # Some of the larger test artifacts are manually cleaned to save space.
 
 # Bootstrap is excluded because it's not something we ship, and a lot of its
 # tests are geared toward the upstream CI environment.
-timeout -v 90m %{__python3} ./x.py test --no-fail-fast --exclude src/bootstrap || :
+timeout -v 90m %{__xk} test --no-fail-fast --skip src/bootstrap || :
 rm -rf "./build/%{rust_triple}/test/"
 
-timeout -v 30m %{__python3} ./x.py test --no-fail-fast cargo || :
+timeout -v 30m %{__xk} test --no-fail-fast cargo || :
 rm -rf "./build/%{rust_triple}/stage2-tools/%{rust_triple}/cit/"
 
-timeout -v 30m %{__python3} ./x.py test --no-fail-fast clippy || :
+timeout -v 30m %{__xk} test --no-fail-fast clippy || :
 
-timeout -v 30m %{__python3} ./x.py test --no-fail-fast rust-analyzer || :
+timeout -v 30m %{__xk} test --no-fail-fast rust-analyzer || :
 
-timeout -v 30m %{__python3} ./x.py test --no-fail-fast rustfmt || :
+timeout -v 30m %{__xk} test --no-fail-fast rustfmt || :
 
 
 %ldconfig_scriptlets
@@ -953,58 +926,46 @@ timeout -v 30m %{__python3} ./x.py test --no-fail-fast rustfmt || :
 %dir %{rustlibdir}/%{rust_triple}/lib
 %{rustlibdir}/%{rust_triple}/lib/*.rlib
 
+%global target_files()      \
+%files std-static-%1        \
+%dir %{rustlibdir}          \
+%dir %{rustlibdir}/%1       \
+%dir %{rustlibdir}/%1/lib   \
+%{rustlibdir}/%1/lib/*.rlib
 
-%if %defined mingw_targets
-%{lua: do
-  for triple in string.gmatch(rpm.expand("%{mingw_targets}"), "%S+") do
-    local subs = {
-      triple = triple,
-      rustlibdir = rpm.expand("%{rustlibdir}"),
-    }
-    local s = string.gsub([[
-
-%files std-static-{{triple}}
-%dir {{rustlibdir}}
-%dir {{rustlibdir}}/{{triple}}
-%dir {{rustlibdir}}/{{triple}}/lib
-{{rustlibdir}}/{{triple}}/lib/*.rlib
-{{rustlibdir}}/{{triple}}/lib/rs*.o
-%exclude {{rustlibdir}}/{{triple}}/lib/*.dll
-%exclude {{rustlibdir}}/{{triple}}/lib/*.dll.a
-%exclude {{rustlibdir}}/{{triple}}/lib/self-contained
-
-]], "{{(%w+)}}", subs)
-    print(s)
-  end
-end}
+%if %target_enabled i686-pc-windows-gnu
+%target_files i686-pc-windows-gnu
+%{rustlibdir}/i686-pc-windows-gnu/lib/rs*.o
+%exclude %{rustlibdir}/i686-pc-windows-gnu/lib/*.dll
+%exclude %{rustlibdir}/i686-pc-windows-gnu/lib/*.dll.a
 %endif
 
-
-%if %defined wasm_targets
-%{lua: do
-  for triple in string.gmatch(rpm.expand("%{wasm_targets}"), "%S+") do
-    local subs = {
-      triple = triple,
-      rustlibdir = rpm.expand("%{rustlibdir}"),
-      wasi = string.find(triple, "-wasi") and 1 or 0,
-    }
-    local s = string.gsub([[
-
-%files std-static-{{triple}}
-%dir {{rustlibdir}}
-%dir {{rustlibdir}}/{{triple}}
-%dir {{rustlibdir}}/{{triple}}/lib
-{{rustlibdir}}/{{triple}}/lib/*.rlib
-%if {{wasi}}
-%dir {{rustlibdir}}/{{triple}}/lib/self-contained
-{{rustlibdir}}/{{triple}}/lib/self-contained/crt*.o
-{{rustlibdir}}/{{triple}}/lib/self-contained/libc.a
+%if %target_enabled x86_64-pc-windows-gnu
+%target_files x86_64-pc-windows-gnu
+%{rustlibdir}/x86_64-pc-windows-gnu/lib/rs*.o
+%exclude %{rustlibdir}/x86_64-pc-windows-gnu/lib/*.dll
+%exclude %{rustlibdir}/x86_64-pc-windows-gnu/lib/*.dll.a
 %endif
 
-]], "{{(%w+)}}", subs)
-    print(s)
-  end
-end}
+%if %target_enabled wasm32-unknown-unknown
+%target_files wasm32-unknown-unknown
+%endif
+
+%if %target_enabled wasm32-wasi
+%target_files wasm32-wasi
+%if %with bundled_wasi_libc
+%dir %{rustlibdir}/wasm32-wasi/lib/self-contained
+%{rustlibdir}/wasm32-wasi/lib/self-contained/crt*.o
+%{rustlibdir}/wasm32-wasi/lib/self-contained/libc.a
+%endif
+%endif
+
+%if %target_enabled x86_64-unknown-none
+%target_files x86_64-unknown-none
+%endif
+
+%if %target_enabled x86_64-unknown-uefi
+%target_files x86_64-unknown-uefi
 %endif
 
 
@@ -1020,11 +981,9 @@ end}
 %exclude %{_bindir}/rust-gdbgui
 
 
-%if %with lldb
 %files lldb
 %{_bindir}/rust-lldb
 %{rustlibdir}/etc/lldb_*
-%endif
 
 
 %files doc
@@ -1041,7 +1000,6 @@ end}
 %license src/tools/cargo/LICENSE-{APACHE,MIT,THIRD-PARTY}
 %doc src/tools/cargo/README.md
 %{_bindir}/cargo
-%{_libexecdir}/cargo*
 %{_mandir}/man1/cargo*.1*
 %{_sysconfdir}/bash_completion.d/cargo
 %{_datadir}/zsh/site-functions/_cargo
@@ -1082,6 +1040,20 @@ end}
 
 
 %changelog
+* Fri Jan 05 2024 Josh Stone <jistone@redhat.com> - 1.75.0-1
+- Update to 1.75.0.
+
+* Wed Jan 03 2024 Josh Stone <jistone@redhat.com> - 1.74.1-1
+- Update to 1.74.1.
+
+* Tue Oct 17 2023 Josh Stone <jistone@redhat.com> - 1.73.0-1
+- Update to 1.73.0.
+- Use emmalloc instead of CC0 dlmalloc when bundling wasi-libc
+
+* Thu Oct 12 2023 Josh Stone <jistone@redhat.com> - 1.72.1-1
+- Update to 1.72.1.
+- Migrated to SPDX license
+
 * Tue Aug 08 2023 Josh Stone <jistone@redhat.com> - 1.71.1-1
 - Update to 1.71.1.
 - Security fix for CVE-2023-38497