310 lines
14 KiB
Diff
310 lines
14 KiB
Diff
From 4654172e942b5b9250aff70101d54bc880060073 Mon Sep 17 00:00:00 2001
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From: Samuel Holland <samuel@sholland.org>
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Date: Sun, 3 May 2020 17:53:33 +0200
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Subject: [PATCH 04/15] Remove -nostdlib and musl_root from musl targets
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---
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config.toml.example | 3 ---
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src/bootstrap/cc_detect.rs | 25 ++----------------
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src/bootstrap/compile.rs | 22 +---------------
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src/bootstrap/config.rs | 7 ------
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src/bootstrap/configure.py | 28 ---------------------
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src/bootstrap/lib.rs | 10 --------
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src/bootstrap/sanity.rs | 22 ----------------
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src/librustc_target/spec/linux_musl_base.rs | 16 ------------
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8 files changed, 3 insertions(+), 130 deletions(-)
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diff --git a/config.toml.example b/config.toml.example
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index ce21b634..f14a5660 100644
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--- a/config.toml.example
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+++ b/config.toml.example
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@@ -352,9 +352,6 @@
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# nightly features
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#channel = "dev"
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-# The root location of the MUSL installation directory.
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-#musl-root = "..."
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-
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# By default the `rustc` executable is built with `-Wl,-rpath` flags on Unix
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# platforms to ensure that the compiler is usable by default from the build
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# directory (as it links to a number of dynamic libraries). This may not be
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diff --git a/src/bootstrap/cc_detect.rs b/src/bootstrap/cc_detect.rs
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index a236edf9..54c3cc64 100644
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--- a/src/bootstrap/cc_detect.rs
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+++ b/src/bootstrap/cc_detect.rs
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@@ -97,7 +97,7 @@ pub fn find(build: &mut Build) {
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if let Some(cc) = config.and_then(|c| c.cc.as_ref()) {
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cfg.compiler(cc);
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} else {
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- set_compiler(&mut cfg, Language::C, target, config, build);
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+ set_compiler(&mut cfg, Language::C, target, config);
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}
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let compiler = cfg.get_compiler();
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@@ -125,7 +125,7 @@ pub fn find(build: &mut Build) {
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cfg.compiler(cxx);
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true
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} else if build.hosts.contains(&target) || build.build == target {
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- set_compiler(&mut cfg, Language::CPlusPlus, target, config, build);
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+ set_compiler(&mut cfg, Language::CPlusPlus, target, config);
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true
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} else {
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false
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@@ -154,7 +154,6 @@ fn set_compiler(
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compiler: Language,
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target: Interned<String>,
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config: Option<&Target>,
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- build: &Build,
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) {
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match &*target {
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// When compiling for android we may have the NDK configured in the
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@@ -196,26 +195,6 @@ fn set_compiler(
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}
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}
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- "mips-unknown-linux-musl" => {
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- if cfg.get_compiler().path().to_str() == Some("gcc") {
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- cfg.compiler("mips-linux-musl-gcc");
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- }
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- }
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- "mipsel-unknown-linux-musl" => {
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- if cfg.get_compiler().path().to_str() == Some("gcc") {
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- cfg.compiler("mipsel-linux-musl-gcc");
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- }
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- }
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-
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- t if t.contains("musl") => {
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- if let Some(root) = build.musl_root(target) {
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- let guess = root.join("bin/musl-gcc");
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- if guess.exists() {
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- cfg.compiler(guess);
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- }
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- }
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- }
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-
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_ => {}
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}
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}
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diff --git a/src/bootstrap/compile.rs b/src/bootstrap/compile.rs
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index 65a00db3..01fd2cf3 100644
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--- a/src/bootstrap/compile.rs
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+++ b/src/bootstrap/compile.rs
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@@ -125,18 +125,7 @@ fn copy_third_party_objects(
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target_deps.push(target);
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};
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- // Copies the crt(1,i,n).o startup objects
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- //
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- // Since musl supports fully static linking, we can cross link for it even
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- // with a glibc-targeting toolchain, given we have the appropriate startup
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- // files. As those shipped with glibc won't work, copy the ones provided by
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- // musl so we have them on linux-gnu hosts.
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- if target.contains("musl") {
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- let srcdir = builder.musl_root(target).unwrap().join("lib");
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- for &obj in &["crt1.o", "crti.o", "crtn.o"] {
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- copy_and_stamp(&srcdir, obj);
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- }
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- } else if target.ends_with("-wasi") {
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+ if target.ends_with("-wasi") {
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let srcdir = builder.wasi_root(target).unwrap().join("lib/wasm32-wasi");
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copy_and_stamp(&srcdir, "crt1.o");
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}
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@@ -213,15 +202,6 @@ pub fn std_cargo(builder: &Builder<'_>, target: Interned<String>, cargo: &mut Ca
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.arg("--manifest-path")
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.arg(builder.src.join("src/libtest/Cargo.toml"));
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- // Help the libc crate compile by assisting it in finding various
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- // sysroot native libraries.
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- if target.contains("musl") {
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- if let Some(p) = builder.musl_root(target) {
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- let root = format!("native={}/lib", p.to_str().unwrap());
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- cargo.rustflag("-L").rustflag(&root);
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- }
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- }
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-
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if target.ends_with("-wasi") {
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if let Some(p) = builder.wasi_root(target) {
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let root = format!("native={}/lib/wasm32-wasi", p.to_str().unwrap());
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diff --git a/src/bootstrap/config.rs b/src/bootstrap/config.rs
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index 56164b74..8c46334a 100644
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--- a/src/bootstrap/config.rs
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+++ b/src/bootstrap/config.rs
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@@ -134,8 +134,6 @@ pub struct Config {
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pub print_step_timings: bool,
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pub missing_tools: bool,
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- // Fallback musl-root for all targets
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- pub musl_root: Option<PathBuf>,
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pub prefix: Option<PathBuf>,
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pub sysconfdir: Option<PathBuf>,
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pub datadir: Option<PathBuf>,
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@@ -171,7 +169,6 @@ pub struct Target {
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pub linker: Option<PathBuf>,
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pub ndk: Option<PathBuf>,
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pub crt_static: Option<bool>,
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- pub musl_root: Option<PathBuf>,
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pub wasi_root: Option<PathBuf>,
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pub qemu_rootfs: Option<PathBuf>,
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pub no_std: bool,
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@@ -322,7 +319,6 @@ struct Rust {
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parallel_compiler: Option<bool>,
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default_linker: Option<String>,
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channel: Option<String>,
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- musl_root: Option<String>,
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rpath: Option<bool>,
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verbose_tests: Option<bool>,
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optimize_tests: Option<bool>,
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@@ -359,7 +355,6 @@ struct TomlTarget {
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llvm_filecheck: Option<String>,
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android_ndk: Option<String>,
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crt_static: Option<bool>,
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- musl_root: Option<String>,
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wasi_root: Option<String>,
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qemu_rootfs: Option<String>,
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no_std: Option<bool>,
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@@ -585,7 +580,6 @@ impl Config {
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set(&mut config.llvm_tools_enabled, rust.llvm_tools);
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config.rustc_parallel = rust.parallel_compiler.unwrap_or(false);
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config.rustc_default_linker = rust.default_linker.clone();
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- config.musl_root = rust.musl_root.clone().map(PathBuf::from);
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config.save_toolstates = rust.save_toolstates.clone().map(PathBuf::from);
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set(&mut config.deny_warnings, flags.deny_warnings.or(rust.deny_warnings));
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set(&mut config.backtrace_on_ice, rust.backtrace_on_ice);
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@@ -625,7 +619,6 @@ impl Config {
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target.ranlib = cfg.ranlib.clone().map(PathBuf::from);
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target.linker = cfg.linker.clone().map(PathBuf::from);
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target.crt_static = cfg.crt_static;
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- target.musl_root = cfg.musl_root.clone().map(PathBuf::from);
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target.wasi_root = cfg.wasi_root.clone().map(PathBuf::from);
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target.qemu_rootfs = cfg.qemu_rootfs.clone().map(PathBuf::from);
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diff --git a/src/bootstrap/configure.py b/src/bootstrap/configure.py
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index 2a46c563..025928b9 100755
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--- a/src/bootstrap/configure.py
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+++ b/src/bootstrap/configure.py
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@@ -110,34 +110,6 @@ v("aarch64-linux-android-ndk", "target.aarch64-linux-android.android-ndk",
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"aarch64-linux-android NDK standalone path")
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v("x86_64-linux-android-ndk", "target.x86_64-linux-android.android-ndk",
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"x86_64-linux-android NDK standalone path")
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-v("musl-root", "target.x86_64-unknown-linux-musl.musl-root",
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- "MUSL root installation directory (deprecated)")
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-v("musl-root-x86_64", "target.x86_64-unknown-linux-musl.musl-root",
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- "x86_64-unknown-linux-musl install directory")
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-v("musl-root-i586", "target.i586-unknown-linux-musl.musl-root",
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- "i586-unknown-linux-musl install directory")
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-v("musl-root-i686", "target.i686-unknown-linux-musl.musl-root",
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- "i686-unknown-linux-musl install directory")
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-v("musl-root-arm", "target.arm-unknown-linux-musleabi.musl-root",
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- "arm-unknown-linux-musleabi install directory")
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-v("musl-root-armhf", "target.arm-unknown-linux-musleabihf.musl-root",
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- "arm-unknown-linux-musleabihf install directory")
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-v("musl-root-armv5te", "target.armv5te-unknown-linux-musleabi.musl-root",
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- "armv5te-unknown-linux-musleabi install directory")
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-v("musl-root-armv7", "target.armv7-unknown-linux-musleabi.musl-root",
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- "armv7-unknown-linux-musleabi install directory")
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-v("musl-root-armv7hf", "target.armv7-unknown-linux-musleabihf.musl-root",
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- "armv7-unknown-linux-musleabihf install directory")
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-v("musl-root-aarch64", "target.aarch64-unknown-linux-musl.musl-root",
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- "aarch64-unknown-linux-musl install directory")
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-v("musl-root-mips", "target.mips-unknown-linux-musl.musl-root",
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- "mips-unknown-linux-musl install directory")
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-v("musl-root-mipsel", "target.mipsel-unknown-linux-musl.musl-root",
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- "mipsel-unknown-linux-musl install directory")
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-v("musl-root-mips64", "target.mips64-unknown-linux-muslabi64.musl-root",
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- "mips64-unknown-linux-muslabi64 install directory")
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-v("musl-root-mips64el", "target.mips64el-unknown-linux-muslabi64.musl-root",
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- "mips64el-unknown-linux-muslabi64 install directory")
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v("qemu-armhf-rootfs", "target.arm-unknown-linux-gnueabihf.qemu-rootfs",
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"rootfs in qemu testing, you probably don't want to use this")
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v("qemu-aarch64-rootfs", "target.aarch64-unknown-linux-gnu.qemu-rootfs",
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diff --git a/src/bootstrap/lib.rs b/src/bootstrap/lib.rs
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index c7e63990..77bbb2cd 100644
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--- a/src/bootstrap/lib.rs
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+++ b/src/bootstrap/lib.rs
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@@ -845,16 +845,6 @@ impl Build {
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}
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}
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- /// Returns the "musl root" for this `target`, if defined
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- fn musl_root(&self, target: Interned<String>) -> Option<&Path> {
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- self.config
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- .target_config
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- .get(&target)
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- .and_then(|t| t.musl_root.as_ref())
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- .or_else(|| self.config.musl_root.as_ref())
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- .map(|p| &**p)
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- }
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-
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/// Returns the sysroot for the wasi target, if defined
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fn wasi_root(&self, target: Interned<String>) -> Option<&Path> {
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self.config.target_config.get(&target).and_then(|t| t.wasi_root.as_ref()).map(|p| &**p)
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diff --git a/src/bootstrap/sanity.rs b/src/bootstrap/sanity.rs
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index 530e74da..8ec9f046 100644
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--- a/src/bootstrap/sanity.rs
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+++ b/src/bootstrap/sanity.rs
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@@ -201,28 +201,6 @@ pub fn check(build: &mut Build) {
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}
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}
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- // Make sure musl-root is valid
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- if target.contains("musl") {
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- // If this is a native target (host is also musl) and no musl-root is given,
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- // fall back to the system toolchain in /usr before giving up
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- if build.musl_root(*target).is_none() && build.config.build == *target {
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- let target = build.config.target_config.entry(target.clone()).or_default();
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- target.musl_root = Some("/usr".into());
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- }
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- match build.musl_root(*target) {
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- Some(root) => {
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- if fs::metadata(root.join("lib/libc.a")).is_err() {
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- panic!("couldn't find libc.a in musl dir: {}", root.join("lib").display());
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- }
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- }
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- None => panic!(
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- "when targeting MUSL either the rust.musl-root \
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- option or the target.$TARGET.musl-root option must \
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- be specified in config.toml"
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- ),
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- }
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- }
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-
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if target.contains("msvc") {
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// There are three builds of cmake on windows: MSVC, MinGW, and
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// Cygwin. The Cygwin build does not have generators for Visual
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diff --git a/src/librustc_target/spec/linux_musl_base.rs b/src/librustc_target/spec/linux_musl_base.rs
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index e294e639..58ae91a9 100644
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--- a/src/librustc_target/spec/linux_musl_base.rs
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+++ b/src/librustc_target/spec/linux_musl_base.rs
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@@ -3,28 +3,12 @@ use crate::spec::{LinkerFlavor, TargetOptions};
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pub fn opts() -> TargetOptions {
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let mut base = super::linux_base::opts();
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- // Make sure that the linker/gcc really don't pull in anything, including
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- // default objects, libs, etc.
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- base.pre_link_args_crt.insert(LinkerFlavor::Gcc, Vec::new());
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- base.pre_link_args_crt.get_mut(&LinkerFlavor::Gcc).unwrap().push("-nostdlib".to_string());
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-
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// At least when this was tested, the linker would not add the
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// `GNU_EH_FRAME` program header to executables generated, which is required
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// when unwinding to locate the unwinding information. I'm not sure why this
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// argument is *not* necessary for normal builds, but it can't hurt!
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base.pre_link_args.get_mut(&LinkerFlavor::Gcc).unwrap().push("-Wl,--eh-frame-hdr".to_string());
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- // When generating a statically linked executable there's generally some
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- // small setup needed which is listed in these files. These are provided by
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- // a musl toolchain and are linked by default by the `musl-gcc` script. Note
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- // that `gcc` also does this by default, it just uses some different files.
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- //
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- // Each target directory for musl has these object files included in it so
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- // they'll be included from there.
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- base.pre_link_objects_exe_crt.push("crt1.o".to_string());
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- base.pre_link_objects_exe_crt.push("crti.o".to_string());
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- base.post_link_objects_crt.push("crtn.o".to_string());
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-
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// These targets statically link libc by default
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base.crt_static_default = true;
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// These targets allow the user to choose between static and dynamic linking.
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--
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2.26.2
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