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Switch to unbundled wasi-libc on Fedora

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Also, use emmalloc instead of CC0 dlmalloc when bundling wasi-libc.
This commit is contained in:
Josh Stone 2023-09-29 14:56:44 -07:00
parent 938db5293e
commit fbe7f8404b
6 changed files with 264 additions and 10 deletions
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1
.gitignore vendored
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@ -425,3 +425,4 @@
/rustc-1.72.0-src.tar.xz
/wasi-libc-7018e24d8fe248596819d2e884761676f3542a04.tar.gz
/rustc-1.72.1-src.tar.xz
/wasi-libc-bd950eb128bff337153de217b11270f948d04bb4.tar.gz

102
0001-bootstrap-allow-disabling-target-self-contained.patch Normal file
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@ -0,0 +1,102 @@
From 19c37083cdae94105f6429350dd0b6617e3c2d56 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/compile.rs | 4 ++++
src/bootstrap/config.rs | 8 ++++++++
src/bootstrap/lib.rs | 5 +++++
4 files changed, 22 insertions(+)
diff --git a/config.example.toml b/config.example.toml
index 0c65b25fe138..6a0f1c01c328 100644
--- a/config.example.toml
+++ b/config.example.toml
@@ -789,6 +789,11 @@ changelog-seen = 2
# 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/compile.rs b/src/bootstrap/compile.rs
index 14c3ef79a78f..7adbf091acbb 100644
--- a/src/bootstrap/compile.rs
+++ b/src/bootstrap/compile.rs
@@ -263,6 +263,10 @@ 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/config.rs b/src/bootstrap/config.rs
index fe932fd6bd30..a626badc3e8a 100644
--- a/src/bootstrap/config.rs
+++ b/src/bootstrap/config.rs
@@ -541,6 +541,7 @@ pub struct Target {
pub wasi_root: Option<PathBuf>,
pub qemu_rootfs: Option<PathBuf>,
pub no_std: bool,
+ pub self_contained: bool,
}
impl Target {
@@ -553,6 +554,9 @@ pub fn from_triple(triple: &str) -> Self {
{
target.no_std = true;
}
+ if triple.contains("-musl") || triple.contains("-wasi") || triple.contains("-windows-gnu") {
+ target.self_contained = true;
+ }
target
}
}
@@ -999,6 +1003,7 @@ 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",
}
}
@@ -1524,6 +1529,9 @@ 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).or_else(|| {
target.ndk.as_ref().map(|ndk| ndk_compiler(Language::C, &triple, ndk))
});
diff --git a/src/bootstrap/lib.rs b/src/bootstrap/lib.rs
index 0a7aff62257a..9b7c18a3353f 100644
--- a/src/bootstrap/lib.rs
+++ b/src/bootstrap/lib.rs
@@ -1285,6 +1285,11 @@ 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

33
0001-wasi-round-up-the-size-for-aligned_alloc.patch Normal file
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@ -0,0 +1,33 @@
From 1c6d867d78475fd8c6274e2b64ebb27735b6cabf Mon Sep 17 00:00:00 2001
From: Josh Stone <jistone@redhat.com>
Date: Sat, 26 Aug 2023 11:50:16 -0700
Subject: [PATCH] wasi: round up the size for `aligned_alloc`
C11 `aligned_alloc` requires that the size be a multiple of the
alignment. This is enforced in the wasi-libc emmalloc implementation,
which always returns NULL if the size is not a multiple.
(The default `MALLOC_IMPL=dlmalloc` does not currently check this.)
---
library/std/src/sys/unix/alloc.rs | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/library/std/src/sys/unix/alloc.rs b/library/std/src/sys/unix/alloc.rs
index 8604b53983d6..af0089978ecb 100644
--- a/library/std/src/sys/unix/alloc.rs
+++ b/library/std/src/sys/unix/alloc.rs
@@ -86,7 +86,11 @@ unsafe fn aligned_malloc(layout: &Layout) -> *mut u8 {
} else if #[cfg(target_os = "wasi")] {
#[inline]
unsafe fn aligned_malloc(layout: &Layout) -> *mut u8 {
- libc::aligned_alloc(layout.align(), layout.size()) as *mut u8
+ // C11 aligned_alloc requires that the size be a multiple of the alignment.
+ // Layout already checks that the size rounded up doesn't overflow isize::MAX.
+ let align = layout.align();
+ let size = layout.size().next_multiple_of(align);
+ libc::aligned_alloc(align, size) as *mut u8
}
} else {
#[inline]
--
2.41.0

78
0002-set-an-external-library-path-for-wasm32-wasi.patch Normal file
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@ -0,0 +1,78 @@
From 3016b2b7052d8b01d50c3a3c6591aeb99d918ca3 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/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 b603a8787460..40d878b64479 100644
--- a/compiler/rustc_codegen_ssa/src/back/link.rs
+++ b/compiler/rustc_codegen_ssa/src/back/link.rs
@@ -1475,6 +1475,12 @@ 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() {
@@ -1967,6 +1973,9 @@ 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 2365dfaf1af8..35f3a686cf67 100644
--- a/compiler/rustc_target/src/spec/mod.rs
+++ b/compiler/rustc_target/src/spec/mod.rs
@@ -1653,6 +1653,7 @@ 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,
@@ -2124,6 +2125,7 @@ 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/wasm32_wasi.rs b/compiler/rustc_target/src/spec/wasm32_wasi.rs
index a0476d542e64..ad7160bf5fcd 100644
--- a/compiler/rustc_target/src/spec/wasm32_wasi.rs
+++ b/compiler/rustc_target/src/spec/wasm32_wasi.rs
@@ -85,7 +85,11 @@ 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

58
rust.spec
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@ -43,10 +43,15 @@
# (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 7018e24d8fe248596819d2e884761676f3542a04
%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
@ -118,17 +123,27 @@ 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
# 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
# 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
Patch6: 0001-Allow-using-external-builds-of-the-compiler-rt-profi.patch
# Fix --no-fail-fast
# https://github.com/rust-lang/rust/pull/113214
Patch5: 0001-Don-t-fail-early-if-try_run-returns-an-error.patch
Patch7: 0001-Don-t-fail-early-if-try_run-returns-an-error.patch
# The dist-src tarball doesn't include .github/
# https://github.com/rust-lang/rust/pull/115109
Patch6: 0001-Skip-ExpandYamlAnchors-when-the-config-is-missing.patch
Patch8: 0001-Skip-ExpandYamlAnchors-when-the-config-is-missing.patch
# wasi: round up the size for aligned_alloc
# https://github.com/rust-lang/rust/pull/115254
Patch9: 0001-wasi-round-up-the-size-for-aligned_alloc.patch
### RHEL-specific patches below ###
@ -336,7 +351,11 @@ 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 \
@ -413,7 +432,11 @@ BuildArch: noarch
%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
BuildArch: noarch
%target_description wasm32-wasi WebAssembly
%endif
@ -595,8 +618,9 @@ 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}
@ -605,8 +629,13 @@ 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
%patch -P7 -p1
%patch -P8 -p1
%patch -P9 -p1
%if %with disabled_libssh2
%patch -P100 -p1
@ -733,16 +762,25 @@ fi
--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
%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
@ -969,7 +1007,6 @@ rm -rf "./build/%{rust_triple}/stage2-tools/%{rust_triple}/cit/"
%{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
%exclude %{rustlibdir}/i686-pc-windows-gnu/lib/self-contained
%endif
%if %target_enabled x86_64-pc-windows-gnu
@ -977,7 +1014,6 @@ rm -rf "./build/%{rust_triple}/stage2-tools/%{rust_triple}/cit/"
%{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
%exclude %{rustlibdir}/x86_64-pc-windows-gnu/lib/self-contained
%endif
%if %target_enabled wasm32-unknown-unknown
@ -986,10 +1022,12 @@ rm -rf "./build/%{rust_triple}/stage2-tools/%{rust_triple}/cit/"
%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
@ -1074,8 +1112,10 @@ rm -rf "./build/%{rust_triple}/stage2-tools/%{rust_triple}/cit/"
%changelog
* Wed Sep 27 2023 Josh Stone <jistone@redhat.com> - 1.72.1-3
* Fri Sep 29 2023 Josh Stone <jistone@redhat.com> - 1.72.1-3
- Fix the profiler runtime with compiler-rt-17
- Switch to unbundled wasi-libc on Fedora
- Use emmalloc instead of CC0 dlmalloc when bundling wasi-libc
* Mon Sep 25 2023 Josh Stone <jistone@redhat.com> - 1.72.1-2
- Fix LLVM dependency for ELN

2
sources
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@ -1,2 +1,2 @@
SHA512 (rustc-1.72.1-src.tar.xz) = 08232b5bf36f82a995d67f3d03d5e35b7d8914d31fb4491d4c37b72a830bc438e9d18d9e138d398b1b6ae4aa09f7f8e1e9b68da6273ab74bdae4c6123586a21b
SHA512 (wasi-libc-7018e24d8fe248596819d2e884761676f3542a04.tar.gz) = a2a4a952c3d9795792be8f055387057befaebe0675ad2464a478cb1f2c45d65f233e0ee4c4dbcaa137bf9649882ff6c6acf2f2bec07b2ad89f63ff980d972e6b
SHA512 (wasi-libc-bd950eb128bff337153de217b11270f948d04bb4.tar.gz) = 01e5cc3ebdab239f57816ff80f939fd87a5491a28951daf74b3310b118b4820c098ac9417771c9c6af55ca91d2cabe6498975ab9db4914aba754d87067cd1066