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-rw-r--r--cc/src/lib.rs293
1 files changed, 193 insertions, 100 deletions
diff --git a/cc/src/lib.rs b/cc/src/lib.rs
index 5eebd07..9fef147 100644
--- a/cc/src/lib.rs
+++ b/cc/src/lib.rs
@@ -61,15 +61,15 @@
#[cfg(feature = "parallel")]
extern crate rayon;
+use std::collections::HashMap;
use std::env;
use std::ffi::{OsStr, OsString};
use std::fs;
+use std::io::{self, BufRead, BufReader, Read, Write};
use std::path::{Path, PathBuf};
use std::process::{Child, Command, Stdio};
-use std::io::{self, BufRead, BufReader, Read, Write};
-use std::thread::{self, JoinHandle};
-use std::collections::HashMap;
use std::sync::{Arc, Mutex};
+use std::thread::{self, JoinHandle};
// These modules are all glue to support reading the MSVC version from
// the registry and from COM interfaces
@@ -891,7 +891,7 @@ impl Build {
return Err(Error::new(
ErrorKind::IOError,
"Getting object file details failed.",
- ))
+ ));
}
};
@@ -956,7 +956,7 @@ impl Build {
fn compile_objects(&self, objs: &[Object]) -> Result<(), Error> {
use self::rayon::prelude::*;
- if let Ok(amt) = env::var("NUM_JOBS") {
+ if let Some(amt) = self.getenv("NUM_JOBS") {
if let Ok(amt) = amt.parse() {
let _ = rayon::ThreadPoolBuilder::new()
.num_threads(amt)
@@ -1093,7 +1093,86 @@ impl Build {
let target = self.get_target()?;
let mut cmd = self.get_base_compiler()?;
+ let envflags = self.envflags(if self.cpp { "CXXFLAGS" } else { "CFLAGS" });
+
+ // Disable default flag generation via environment variable or when
+ // certain cross compiling arguments are set
+ let use_defaults = self.getenv("CRATE_CC_NO_DEFAULTS").is_none();
+
+ if use_defaults {
+ self.add_default_flags(&mut cmd, &target, &opt_level)?;
+ } else {
+ println!("Info: default compiler flags are disabled");
+ }
+
+ for arg in envflags {
+ cmd.push_cc_arg(arg.into());
+ }
+
+ for directory in self.include_directories.iter() {
+ cmd.args.push(cmd.family.include_flag().into());
+ cmd.args.push(directory.into());
+ }
+
+ // If warnings and/or extra_warnings haven't been explicitly set,
+ // then we set them only if the environment doesn't already have
+ // CFLAGS/CXXFLAGS, since those variables presumably already contain
+ // the desired set of warnings flags.
+
+ if self
+ .warnings
+ .unwrap_or(if self.has_flags() { false } else { true })
+ {
+ let wflags = cmd.family.warnings_flags().into();
+ cmd.push_cc_arg(wflags);
+ }
+
+ if self
+ .extra_warnings
+ .unwrap_or(if self.has_flags() { false } else { true })
+ {
+ if let Some(wflags) = cmd.family.extra_warnings_flags() {
+ cmd.push_cc_arg(wflags.into());
+ }
+ }
+
+ for flag in self.flags.iter() {
+ cmd.args.push(flag.into());
+ }
+ for flag in self.flags_supported.iter() {
+ if self.is_flag_supported(flag).unwrap_or(false) {
+ cmd.push_cc_arg(flag.into());
+ }
+ }
+
+ for &(ref key, ref value) in self.definitions.iter() {
+ let lead = if let ToolFamily::Msvc { .. } = cmd.family {
+ "/"
+ } else {
+ "-"
+ };
+ if let Some(ref value) = *value {
+ cmd.args.push(format!("{}D{}={}", lead, key, value).into());
+ } else {
+ cmd.args.push(format!("{}D{}", lead, key).into());
+ }
+ }
+
+ if self.warnings_into_errors {
+ let warnings_to_errors_flag = cmd.family.warnings_to_errors_flag().into();
+ cmd.push_cc_arg(warnings_to_errors_flag);
+ }
+
+ Ok(cmd)
+ }
+
+ fn add_default_flags(
+ &self,
+ cmd: &mut Tool,
+ target: &str,
+ opt_level: &str,
+ ) -> Result<(), Error> {
// Non-target flags
// If the flag is not conditioned on target variable, it belongs here :)
match cmd.family {
@@ -1107,8 +1186,9 @@ impl Build {
Some(true) => "/MT",
Some(false) => "/MD",
None => {
- let features =
- env::var("CARGO_CFG_TARGET_FEATURE").unwrap_or(String::new());
+ let features = self
+ .getenv("CARGO_CFG_TARGET_FEATURE")
+ .unwrap_or(String::new());
if features.contains("crt-static") {
"/MT"
} else {
@@ -1120,9 +1200,9 @@ impl Build {
match &opt_level[..] {
// Msvc uses /O1 to enable all optimizations that minimize code size.
- "z" | "s" | "1" => cmd.args.push("/O1".into()),
+ "z" | "s" | "1" => cmd.push_opt_unless_duplicate("/O1".into()),
// -O3 is a valid value for gcc and clang compilers, but not msvc. Cap to /O2.
- "2" | "3" => cmd.args.push("/O2".into()),
+ "2" | "3" => cmd.push_opt_unless_duplicate("/O2".into()),
_ => {}
}
}
@@ -1130,9 +1210,9 @@ impl Build {
// arm-linux-androideabi-gcc 4.8 shipped with Android NDK does
// not support '-Oz'
if opt_level == "z" && cmd.family != ToolFamily::Clang {
- cmd.args.push("-Os".into());
+ cmd.push_opt_unless_duplicate("-Os".into());
} else {
- cmd.args.push(format!("-O{}", opt_level).into());
+ cmd.push_opt_unless_duplicate(format!("-O{}", opt_level).into());
}
if !target.contains("-ios") {
@@ -1149,9 +1229,6 @@ impl Build {
}
}
}
- for arg in self.envflags(if self.cpp { "CXXFLAGS" } else { "CFLAGS" }) {
- cmd.args.push(arg.into());
- }
if self.get_debug() {
if self.cuda {
@@ -1159,7 +1236,7 @@ impl Build {
cmd.args.push(nvcc_debug_flag);
}
let family = cmd.family;
- family.add_debug_flags(&mut cmd);
+ family.add_debug_flags(cmd);
}
// Target flags
@@ -1171,11 +1248,11 @@ impl Build {
if clang_cl {
if target.contains("x86_64") {
cmd.args.push("-m64".into());
- } else if target.contains("i586") {
+ } else if target.contains("86") {
cmd.args.push("-m32".into());
cmd.args.push("/arch:IA32".into());
} else {
- cmd.args.push("-m32".into());
+ cmd.args.push(format!("--target={}", target).into());
}
} else {
if target.contains("i586") {
@@ -1193,7 +1270,8 @@ impl Build {
// the SDK, but for all released versions of the
// Windows SDK it is required.
if target.contains("arm") || target.contains("thumb") {
- cmd.args.push("/D_ARM_WINAPI_PARTITION_DESKTOP_SDK_AVAILABLE=1".into());
+ cmd.args
+ .push("/D_ARM_WINAPI_PARTITION_DESKTOP_SDK_AVAILABLE=1".into());
}
}
ToolFamily::Gnu => {
@@ -1206,14 +1284,18 @@ impl Build {
}
if self.static_flag.is_none() {
- let features = env::var("CARGO_CFG_TARGET_FEATURE").unwrap_or(String::new());
+ let features = self
+ .getenv("CARGO_CFG_TARGET_FEATURE")
+ .unwrap_or(String::new());
if features.contains("crt-static") {
cmd.args.push("-static".into());
}
}
// armv7 targets get to use armv7 instructions
- if (target.starts_with("armv7") || target.starts_with("thumbv7")) && target.contains("-linux-") {
+ if (target.starts_with("armv7") || target.starts_with("thumbv7"))
+ && target.contains("-linux-")
+ {
cmd.args.push("-march=armv7-a".into());
}
@@ -1346,7 +1428,7 @@ impl Build {
if target.contains("-ios") {
// FIXME: potential bug. iOS is always compiled with Clang, but Gcc compiler may be
// detected instead.
- self.ios_flags(&mut cmd)?;
+ self.ios_flags(cmd)?;
}
if self.static_flag.unwrap_or(false) {
@@ -1372,62 +1454,17 @@ impl Build {
}
}
- for directory in self.include_directories.iter() {
- cmd.args.push(cmd.family.include_flag().into());
- cmd.args.push(directory.into());
- }
-
- // If warnings and/or extra_warnings haven't been explicitly set,
- // then we set them only if the environment doesn't already have
- // CFLAGS/CXXFLAGS, since those variables presumably already contain
- // the desired set of warnings flags.
-
- if self.warnings.unwrap_or(if self.has_flags() { false } else { true }) {
- let wflags = cmd.family.warnings_flags().into();
- cmd.push_cc_arg(wflags);
- }
-
- if self.extra_warnings.unwrap_or(if self.has_flags() { false } else { true }) {
- if let Some(wflags) = cmd.family.extra_warnings_flags() {
- cmd.push_cc_arg(wflags.into());
- }
- }
-
- for flag in self.flags.iter() {
- cmd.args.push(flag.into());
- }
-
- for flag in self.flags_supported.iter() {
- if self.is_flag_supported(flag).unwrap_or(false) {
- cmd.push_cc_arg(flag.into());
- }
- }
-
- for &(ref key, ref value) in self.definitions.iter() {
- let lead = if let ToolFamily::Msvc { .. } = cmd.family {
- "/"
- } else {
- "-"
- };
- if let Some(ref value) = *value {
- cmd.args.push(format!("{}D{}={}", lead, key, value).into());
- } else {
- cmd.args.push(format!("{}D{}", lead, key).into());
- }
- }
-
- if self.warnings_into_errors {
- let warnings_to_errors_flag = cmd.family.warnings_to_errors_flag().into();
- cmd.push_cc_arg(warnings_to_errors_flag);
- }
-
- Ok(cmd)
+ Ok(())
}
fn has_flags(&self) -> bool {
let flags_env_var_name = if self.cpp { "CXXFLAGS" } else { "CFLAGS" };
let flags_env_var_value = self.get_var(flags_env_var_name);
- if let Ok(_) = flags_env_var_value { true } else { false }
+ if let Ok(_) = flags_env_var_value {
+ true
+ } else {
+ false
+ }
}
fn msvc_macro_assembler(&self) -> Result<(Command, String), Error> {
@@ -1471,12 +1508,7 @@ impl Build {
let objects: Vec<_> = objs.iter().map(|obj| obj.dst.clone()).collect();
let target = self.get_target()?;
if target.contains("msvc") {
- let mut cmd = match self.archiver {
- Some(ref s) => self.cmd(s),
- None => windows_registry::find(&target, "lib.exe")
- .unwrap_or_else(|| self.cmd("lib.exe")),
- };
-
+ let (mut cmd, program) = self.get_ar()?;
let mut out = OsString::from("/OUT:");
out.push(dst);
cmd.arg(out).arg("/nologo");
@@ -1521,7 +1553,7 @@ impl Build {
} else {
cmd.args(&objects).args(&self.objects);
}
- run(&mut cmd, "lib.exe")?;
+ run(&mut cmd, &program)?;
// The Rust compiler will look for libfoo.a and foo.lib, but the
// MSVC linker will also be passed foo.lib, so be sure that both
@@ -1537,7 +1569,7 @@ impl Build {
return Err(Error::new(
ErrorKind::IOError,
"Could not copy or create a hard-link to the generated lib file.",
- ))
+ ));
}
};
} else {
@@ -1574,7 +1606,7 @@ impl Build {
return Err(Error::new(
ErrorKind::ArchitectureInvalid,
"Unknown architecture for iOS target.",
- ))
+ ));
}
};
@@ -1593,7 +1625,8 @@ impl Build {
};
self.print(&format!("Detecting iOS SDK path for {}", sdk));
- let sdk_path = self.cmd("xcrun")
+ let sdk_path = self
+ .cmd("xcrun")
.arg("--show-sdk-path")
.arg("--sdk")
.arg(sdk)
@@ -1607,7 +1640,7 @@ impl Build {
return Err(Error::new(
ErrorKind::IOError,
"Unable to determine iOS SDK path.",
- ))
+ ));
}
};
@@ -1658,7 +1691,8 @@ impl Build {
let cl_exe = windows_registry::find_tool(&target, "cl.exe");
- let tool_opt: Option<Tool> = self.env_tool(env)
+ let tool_opt: Option<Tool> = self
+ .env_tool(env)
.map(|(tool, cc, args)| {
// chop off leading/trailing whitespace to work around
// semi-buggy build scripts which are shared in
@@ -1717,6 +1751,10 @@ impl Build {
}
} else if target.contains("cloudabi") {
format!("{}-{}", target, traditional)
+ } else if target == "wasm32-wasi" ||
+ target == "wasm32-unknown-wasi" ||
+ target == "wasm32-unknown-unknown" {
+ "clang".to_string()
} else if self.get_host()? != target {
// CROSS_COMPILE is of the form: "arm-linux-gnueabi-"
let cc_env = self.getenv("CROSS_COMPILE");
@@ -1751,6 +1789,12 @@ impl Build {
"mipsel-unknown-linux-gnu" => Some("mipsel-linux-gnu"),
"mips64-unknown-linux-gnuabi64" => Some("mips64-linux-gnuabi64"),
"mips64el-unknown-linux-gnuabi64" => Some("mips64el-linux-gnuabi64"),
+ "mipsisa32r6-unknown-linux-gnu" => Some("mipsisa32r6-linux-gnu"),
+ "mipsisa32r6el-unknown-linux-gnu" => Some("mipsisa32r6el-linux-gnu"),
+ "mipsisa64r6-unknown-linux-gnuabi64" => Some("mipsisa64r6-linux-gnuabi64"),
+ "mipsisa64r6el-unknown-linux-gnuabi64" => {
+ Some("mipsisa64r6el-linux-gnuabi64")
+ }
"powerpc-unknown-linux-gnu" => Some("powerpc-linux-gnu"),
"powerpc-unknown-linux-gnuspe" => Some("powerpc-linux-gnuspe"),
"powerpc-unknown-netbsd" => Some("powerpc--netbsd"),
@@ -1818,9 +1862,9 @@ impl Build {
// configure for invocations like `clang-cl` we still get a "works out
// of the box" experience.
if let Some(cl_exe) = cl_exe {
- if tool.family == (ToolFamily::Msvc { clang_cl: true }) &&
- tool.env.len() == 0 &&
- target.contains("msvc")
+ if tool.family == (ToolFamily::Msvc { clang_cl: true })
+ && tool.env.len() == 0
+ && target.contains("msvc")
{
for &(ref k, ref v) in cl_exe.env.iter() {
tool.env.push((k.to_owned(), v.to_owned()));
@@ -1836,7 +1880,8 @@ impl Build {
let host = self.get_host()?;
let kind = if host == target { "HOST" } else { "TARGET" };
let target_u = target.replace("-", "_");
- let res = self.getenv(&format!("{}_{}", var_base, target))
+ let res = self
+ .getenv(&format!("{}_{}", var_base, target))
.or_else(|| self.getenv(&format!("{}_{}", var_base, target_u)))
.or_else(|| self.getenv(&format!("{}_{}", kind, var_base)))
.or_else(|| self.getenv(var_base));
@@ -1961,9 +2006,10 @@ impl Build {
if let Ok(p) = self.get_var("AR") {
return Ok((self.cmd(&p), p));
}
- let program = if self.get_target()?.contains("android") {
- format!("{}-ar", self.get_target()?.replace("armv7", "arm"))
- } else if self.get_target()?.contains("emscripten") {
+ let target = self.get_target()?;
+ let program = if target.contains("android") {
+ format!("{}-ar", target.replace("armv7", "arm"))
+ } else if target.contains("emscripten") {
// Windows use bat files so we have to be a bit more specific
if cfg!(windows) {
let mut cmd = self.cmd("cmd");
@@ -1972,6 +2018,11 @@ impl Build {
}
"emar".to_string()
+ } else if target.contains("msvc") {
+ match windows_registry::find(&target, "lib.exe") {
+ Some(t) => return Ok((t, "lib.exe".to_string())),
+ None => "lib.exe".to_string(),
+ }
} else {
"ar".to_string()
};
@@ -2021,7 +2072,7 @@ impl Build {
fn getenv(&self, v: &str) -> Option<String> {
let mut cache = self.env_cache.lock().unwrap();
if let Some(val) = cache.get(v) {
- return val.clone()
+ return val.clone();
}
let r = env::var(v).ok();
self.print(&format!("{} = {:?}", v, r));
@@ -2062,10 +2113,11 @@ impl Tool {
let family = if let Some(fname) = path.file_name().and_then(|p| p.to_str()) {
if fname.contains("clang-cl") {
ToolFamily::Msvc { clang_cl: true }
- } else if fname.contains("cl") &&
- !fname.contains("cloudabi") &&
- !fname.contains("uclibc") &&
- !fname.contains("clang") {
+ } else if fname.contains("cl")
+ && !fname.contains("cloudabi")
+ && !fname.contains("uclibc")
+ && !fname.contains("clang")
+ {
ToolFamily::Msvc { clang_cl: false }
} else if fname.contains("clang") {
ToolFamily::Clang
@@ -2104,6 +2156,42 @@ impl Tool {
self.args.push(flag);
}
+ fn is_duplicate_opt_arg(&self, flag: &OsString) -> bool {
+ let flag = flag.to_str().unwrap();
+ let mut chars = flag.chars();
+
+ // Only duplicate check compiler flags
+ if self.is_like_msvc() {
+ if chars.next() != Some('/') {
+ return false;
+ }
+ } else if self.is_like_gnu() || self.is_like_clang() {
+ if chars.next() != Some('-') {
+ return false;
+ }
+ }
+
+ // Check for existing optimization flags (-O, /O)
+ if chars.next() == Some('O') {
+ return self
+ .args()
+ .iter()
+ .any(|ref a| a.to_str().unwrap_or("").chars().nth(1) == Some('O'));
+ }
+
+ // TODO Check for existing -m..., -m...=..., /arch:... flags
+ return false;
+ }
+
+ /// Don't push optimization arg if it conflicts with existing args
+ fn push_opt_unless_duplicate(&mut self, flag: OsString) {
+ if self.is_duplicate_opt_arg(&flag) {
+ println!("Info: Ignoring duplicate arg {:?}", &flag);
+ } else {
+ self.push_cc_arg(flag);
+ }
+ }
+
/// Converts this compiler into a `Command` that's ready to be run.
///
/// This is useful for when the compiler needs to be executed and the
@@ -2120,7 +2208,11 @@ impl Tool {
};
cmd.args(&self.cc_wrapper_args);
- let value = self.args.iter().filter(|a| !self.removed_args.contains(a)).collect::<Vec<_>>();
+ let value = self
+ .args
+ .iter()
+ .filter(|a| !self.removed_args.contains(a))
+ .collect::<Vec<_>>();
cmd.args(&value);
for &(ref k, ref v) in self.env.iter() {
@@ -2215,7 +2307,7 @@ fn run(cmd: &mut Command, program: &str) -> Result<(), Error> {
"Failed to wait on spawned child process, command {:?} with args {:?}.",
cmd, program
),
- ))
+ ));
}
};
print.join().unwrap();
@@ -2253,7 +2345,7 @@ fn run_output(cmd: &mut Command, program: &str) -> Result<Vec<u8>, Error> {
"Failed to wait on spawned child process, command {:?} with args {:?}.",
cmd, program
),
- ))
+ ));
}
};
print.join().unwrap();
@@ -2311,7 +2403,8 @@ fn spawn(cmd: &mut Command, program: &str) -> Result<(Child, JoinHandle<()>), Er
}
fn fail(s: &str) -> ! {
- panic!("\n\nInternal error occurred: {}\n\n", s)
+ let _ = writeln!(io::stderr(), "\n\nerror occurred: {}\n\n", s);
+ std::process::exit(1);
}
fn command_add_output_file(cmd: &mut Command, dst: &Path, msvc: bool, is_asm: bool, is_arm: bool) {
generated by cgit v1.2.3 (git 2.46.0) at 2024-11-21 22:58:15 +0000