diff --git a/compiler/rustc_codegen_llvm/messages.ftl b/compiler/rustc_codegen_llvm/messages.ftl index 1c126e79762..267da9325c3 100644 --- a/compiler/rustc_codegen_llvm/messages.ftl +++ b/compiler/rustc_codegen_llvm/messages.ftl @@ -1,23 +1,13 @@ codegen_llvm_copy_bitcode = failed to copy bitcode to object file: {$err} -codegen_llvm_dlltool_fail_import_library = - Dlltool could not create import library with {$dlltool_path} {$dlltool_args}: - {$stdout} - {$stderr} - codegen_llvm_dynamic_linking_with_lto = cannot prefer dynamic linking when performing LTO .note = only 'staticlib', 'bin', and 'cdylib' outputs are supported with LTO -codegen_llvm_error_calling_dlltool = - Error calling dlltool '{$dlltool_path}': {$error} codegen_llvm_error_creating_import_library = Error creating import library for {$lib_name}: {$error} -codegen_llvm_error_writing_def_file = - Error writing .DEF file: {$error} - codegen_llvm_fixed_x18_invalid_arch = the `-Zfixed-x18` flag is not supported on the `{$arch}` architecture codegen_llvm_from_llvm_diag = {$message} diff --git a/compiler/rustc_codegen_llvm/src/back/archive.rs b/compiler/rustc_codegen_llvm/src/back/archive.rs index d6faa26507f..d3fcbb247b4 100644 --- a/compiler/rustc_codegen_llvm/src/back/archive.rs +++ b/compiler/rustc_codegen_llvm/src/back/archive.rs @@ -1,20 +1,19 @@ //! A helper class for dealing with static archives -use std::ffi::{c_char, c_void, CStr, CString, OsString}; +use std::ffi::{c_char, c_void, CStr, CString}; use std::path::{Path, PathBuf}; -use std::{env, io, mem, ptr, str}; +use std::{io, mem, ptr, str}; use rustc_codegen_ssa::back::archive::{ - try_extract_macho_fat_archive, ArArchiveBuilder, ArchiveBuildFailure, ArchiveBuilder, - ArchiveBuilderBuilder, ObjectReader, UnknownArchiveKind, DEFAULT_OBJECT_READER, + create_mingw_dll_import_lib, try_extract_macho_fat_archive, ArArchiveBuilder, + ArchiveBuildFailure, ArchiveBuilder, ArchiveBuilderBuilder, ObjectReader, UnknownArchiveKind, + DEFAULT_OBJECT_READER, }; use rustc_codegen_ssa::common; use rustc_session::Session; use tracing::trace; -use crate::errors::{ - DlltoolFailImportLibrary, ErrorCallingDllTool, ErrorCreatingImportLibrary, ErrorWritingDEFFile, -}; +use crate::errors::ErrorCreatingImportLibrary; use crate::llvm::archive_ro::{ArchiveRO, Child}; use crate::llvm::{self, ArchiveKind, LLVMMachineType, LLVMRustCOFFShortExport}; @@ -121,95 +120,18 @@ fn create_dll_import_lib( import_name_and_ordinal_vector: Vec<(String, Option)>, output_path: &Path, ) { - let target = &sess.target; - let mingw_gnu_toolchain = common::is_mingw_gnu_toolchain(target); - - if mingw_gnu_toolchain { + if common::is_mingw_gnu_toolchain(&sess.target) { // The binutils linker used on -windows-gnu targets cannot read the import // libraries generated by LLVM: in our attempts, the linker produced an .EXE // that loaded but crashed with an AV upon calling one of the imported // functions. Therefore, use binutils to create the import library instead, // by writing a .DEF file to the temp dir and calling binutils's dlltool. - let def_file_path = output_path.with_extension("def"); - - let def_file_content = format!( - "EXPORTS\n{}", - import_name_and_ordinal_vector - .into_iter() - .map(|(name, ordinal)| { - match ordinal { - Some(n) => format!("{name} @{n} NONAME"), - None => name, - } - }) - .collect::>() - .join("\n") + create_mingw_dll_import_lib( + sess, + lib_name, + import_name_and_ordinal_vector, + output_path, ); - - match std::fs::write(&def_file_path, def_file_content) { - Ok(_) => {} - Err(e) => { - sess.dcx().emit_fatal(ErrorWritingDEFFile { error: e }); - } - }; - - // --no-leading-underscore: For the `import_name_type` feature to work, we need to be - // able to control the *exact* spelling of each of the symbols that are being imported: - // hence we don't want `dlltool` adding leading underscores automatically. - let dlltool = find_binutils_dlltool(sess); - let temp_prefix = { - let mut path = PathBuf::from(&output_path); - path.pop(); - path.push(lib_name); - path - }; - // dlltool target architecture args from: - // https://github.com/llvm/llvm-project-release-prs/blob/llvmorg-15.0.6/llvm/lib/ToolDrivers/llvm-dlltool/DlltoolDriver.cpp#L69 - let (dlltool_target_arch, dlltool_target_bitness) = match sess.target.arch.as_ref() { - "x86_64" => ("i386:x86-64", "--64"), - "x86" => ("i386", "--32"), - "aarch64" => ("arm64", "--64"), - "arm" => ("arm", "--32"), - _ => panic!("unsupported arch {}", sess.target.arch), - }; - let mut dlltool_cmd = std::process::Command::new(&dlltool); - dlltool_cmd - .arg("-d") - .arg(def_file_path) - .arg("-D") - .arg(lib_name) - .arg("-l") - .arg(&output_path) - .arg("-m") - .arg(dlltool_target_arch) - .arg("-f") - .arg(dlltool_target_bitness) - .arg("--no-leading-underscore") - .arg("--temp-prefix") - .arg(temp_prefix); - - match dlltool_cmd.output() { - Err(e) => { - sess.dcx().emit_fatal(ErrorCallingDllTool { - dlltool_path: dlltool.to_string_lossy(), - error: e, - }); - } - // dlltool returns '0' on failure, so check for error output instead. - Ok(output) if !output.stderr.is_empty() => { - sess.dcx().emit_fatal(DlltoolFailImportLibrary { - dlltool_path: dlltool.to_string_lossy(), - dlltool_args: dlltool_cmd - .get_args() - .map(|arg| arg.to_string_lossy()) - .collect::>() - .join(" "), - stdout: String::from_utf8_lossy(&output.stdout), - stderr: String::from_utf8_lossy(&output.stderr), - }) - } - _ => {} - } } else { // we've checked for \0 characters in the library name already let dll_name_z = CString::new(lib_name).unwrap(); @@ -434,39 +356,3 @@ fn build_with_llvm(&mut self, output: &Path) -> io::Result { fn string_to_io_error(s: String) -> io::Error { io::Error::new(io::ErrorKind::Other, format!("bad archive: {s}")) } - -fn find_binutils_dlltool(sess: &Session) -> OsString { - assert!(sess.target.options.is_like_windows && !sess.target.options.is_like_msvc); - if let Some(dlltool_path) = &sess.opts.cg.dlltool { - return dlltool_path.clone().into_os_string(); - } - - let tool_name: OsString = if sess.host.options.is_like_windows { - // If we're compiling on Windows, always use "dlltool.exe". - "dlltool.exe" - } else { - // On other platforms, use the architecture-specific name. - match sess.target.arch.as_ref() { - "x86_64" => "x86_64-w64-mingw32-dlltool", - "x86" => "i686-w64-mingw32-dlltool", - "aarch64" => "aarch64-w64-mingw32-dlltool", - - // For non-standard architectures (e.g., aarch32) fallback to "dlltool". - _ => "dlltool", - } - } - .into(); - - // NOTE: it's not clear how useful it is to explicitly search PATH. - for dir in env::split_paths(&env::var_os("PATH").unwrap_or_default()) { - let full_path = dir.join(&tool_name); - if full_path.is_file() { - return full_path.into_os_string(); - } - } - - // The user didn't specify the location of the dlltool binary, and we weren't able - // to find the appropriate one on the PATH. Just return the name of the tool - // and let the invocation fail with a hopefully useful error message. - tool_name -} diff --git a/compiler/rustc_codegen_llvm/src/errors.rs b/compiler/rustc_codegen_llvm/src/errors.rs index a3957bc52a5..7e53d32ce8c 100644 --- a/compiler/rustc_codegen_llvm/src/errors.rs +++ b/compiler/rustc_codegen_llvm/src/errors.rs @@ -1,4 +1,3 @@ -use std::borrow::Cow; use std::ffi::CString; use std::path::Path; @@ -71,28 +70,6 @@ pub(crate) struct InvalidMinimumAlignmentTooLarge { #[diag(codegen_llvm_sanitizer_memtag_requires_mte)] pub(crate) struct SanitizerMemtagRequiresMte; -#[derive(Diagnostic)] -#[diag(codegen_llvm_error_writing_def_file)] -pub(crate) struct ErrorWritingDEFFile { - pub error: std::io::Error, -} - -#[derive(Diagnostic)] -#[diag(codegen_llvm_error_calling_dlltool)] -pub(crate) struct ErrorCallingDllTool<'a> { - pub dlltool_path: Cow<'a, str>, - pub error: std::io::Error, -} - -#[derive(Diagnostic)] -#[diag(codegen_llvm_dlltool_fail_import_library)] -pub(crate) struct DlltoolFailImportLibrary<'a> { - pub dlltool_path: Cow<'a, str>, - pub dlltool_args: String, - pub stdout: Cow<'a, str>, - pub stderr: Cow<'a, str>, -} - #[derive(Diagnostic)] #[diag(codegen_llvm_dynamic_linking_with_lto)] #[note] diff --git a/compiler/rustc_codegen_ssa/messages.ftl b/compiler/rustc_codegen_ssa/messages.ftl index 000fe2e3ce0..24359f70509 100644 --- a/compiler/rustc_codegen_ssa/messages.ftl +++ b/compiler/rustc_codegen_ssa/messages.ftl @@ -25,8 +25,19 @@ codegen_ssa_copy_path_buf = unable to copy {$source_file} to {$output_path}: {$e codegen_ssa_create_temp_dir = couldn't create a temp dir: {$error} +codegen_ssa_dlltool_fail_import_library = + Dlltool could not create import library with {$dlltool_path} {$dlltool_args}: + {$stdout} + {$stderr} + +codegen_ssa_error_calling_dlltool = + Error calling dlltool '{$dlltool_path}': {$error} + codegen_ssa_error_creating_remark_dir = failed to create remark directory: {$error} +codegen_ssa_error_writing_def_file = + Error writing .DEF file: {$error} + codegen_ssa_expected_used_symbol = expected `used`, `used(compiler)` or `used(linker)` codegen_ssa_extern_funcs_not_found = some `extern` functions couldn't be found; some native libraries may need to be installed or have their path specified diff --git a/compiler/rustc_codegen_ssa/src/back/archive.rs b/compiler/rustc_codegen_ssa/src/back/archive.rs index 0429f11f9ff..df5cc58eca6 100644 --- a/compiler/rustc_codegen_ssa/src/back/archive.rs +++ b/compiler/rustc_codegen_ssa/src/back/archive.rs @@ -1,4 +1,6 @@ +use std::env; use std::error::Error; +use std::ffi::OsString; use std::fs::{self, File}; use std::io::{self, Write}; use std::path::{Path, PathBuf}; @@ -16,6 +18,7 @@ use super::metadata::search_for_section; // Re-exporting for rustc_codegen_llvm::back::archive pub use crate::errors::{ArchiveBuildFailure, ExtractBundledLibsError, UnknownArchiveKind}; +use crate::errors::{DlltoolFailImportLibrary, ErrorCallingDllTool, ErrorWritingDEFFile}; pub trait ArchiveBuilderBuilder { fn new_archive_builder<'a>(&self, sess: &'a Session) -> Box; @@ -70,6 +73,130 @@ fn extract_bundled_libs<'a>( } } +pub fn create_mingw_dll_import_lib( + sess: &Session, + lib_name: &str, + import_name_and_ordinal_vector: Vec<(String, Option)>, + output_path: &Path, +) { + let def_file_path = output_path.with_extension("def"); + + let def_file_content = format!( + "EXPORTS\n{}", + import_name_and_ordinal_vector + .into_iter() + .map(|(name, ordinal)| { + match ordinal { + Some(n) => format!("{name} @{n} NONAME"), + None => name, + } + }) + .collect::>() + .join("\n") + ); + + match std::fs::write(&def_file_path, def_file_content) { + Ok(_) => {} + Err(e) => { + sess.dcx().emit_fatal(ErrorWritingDEFFile { error: e }); + } + }; + + // --no-leading-underscore: For the `import_name_type` feature to work, we need to be + // able to control the *exact* spelling of each of the symbols that are being imported: + // hence we don't want `dlltool` adding leading underscores automatically. + let dlltool = find_binutils_dlltool(sess); + let temp_prefix = { + let mut path = PathBuf::from(&output_path); + path.pop(); + path.push(lib_name); + path + }; + // dlltool target architecture args from: + // https://github.com/llvm/llvm-project-release-prs/blob/llvmorg-15.0.6/llvm/lib/ToolDrivers/llvm-dlltool/DlltoolDriver.cpp#L69 + let (dlltool_target_arch, dlltool_target_bitness) = match sess.target.arch.as_ref() { + "x86_64" => ("i386:x86-64", "--64"), + "x86" => ("i386", "--32"), + "aarch64" => ("arm64", "--64"), + "arm" => ("arm", "--32"), + _ => panic!("unsupported arch {}", sess.target.arch), + }; + let mut dlltool_cmd = std::process::Command::new(&dlltool); + dlltool_cmd + .arg("-d") + .arg(def_file_path) + .arg("-D") + .arg(lib_name) + .arg("-l") + .arg(&output_path) + .arg("-m") + .arg(dlltool_target_arch) + .arg("-f") + .arg(dlltool_target_bitness) + .arg("--no-leading-underscore") + .arg("--temp-prefix") + .arg(temp_prefix); + + match dlltool_cmd.output() { + Err(e) => { + sess.dcx().emit_fatal(ErrorCallingDllTool { + dlltool_path: dlltool.to_string_lossy(), + error: e, + }); + } + // dlltool returns '0' on failure, so check for error output instead. + Ok(output) if !output.stderr.is_empty() => { + sess.dcx().emit_fatal(DlltoolFailImportLibrary { + dlltool_path: dlltool.to_string_lossy(), + dlltool_args: dlltool_cmd + .get_args() + .map(|arg| arg.to_string_lossy()) + .collect::>() + .join(" "), + stdout: String::from_utf8_lossy(&output.stdout), + stderr: String::from_utf8_lossy(&output.stderr), + }) + } + _ => {} + } +} + +fn find_binutils_dlltool(sess: &Session) -> OsString { + assert!(sess.target.options.is_like_windows && !sess.target.options.is_like_msvc); + if let Some(dlltool_path) = &sess.opts.cg.dlltool { + return dlltool_path.clone().into_os_string(); + } + + let tool_name: OsString = if sess.host.options.is_like_windows { + // If we're compiling on Windows, always use "dlltool.exe". + "dlltool.exe" + } else { + // On other platforms, use the architecture-specific name. + match sess.target.arch.as_ref() { + "x86_64" => "x86_64-w64-mingw32-dlltool", + "x86" => "i686-w64-mingw32-dlltool", + "aarch64" => "aarch64-w64-mingw32-dlltool", + + // For non-standard architectures (e.g., aarch32) fallback to "dlltool". + _ => "dlltool", + } + } + .into(); + + // NOTE: it's not clear how useful it is to explicitly search PATH. + for dir in env::split_paths(&env::var_os("PATH").unwrap_or_default()) { + let full_path = dir.join(&tool_name); + if full_path.is_file() { + return full_path.into_os_string(); + } + } + + // The user didn't specify the location of the dlltool binary, and we weren't able + // to find the appropriate one on the PATH. Just return the name of the tool + // and let the invocation fail with a hopefully useful error message. + tool_name +} + pub trait ArchiveBuilder { fn add_file(&mut self, path: &Path); diff --git a/compiler/rustc_codegen_ssa/src/errors.rs b/compiler/rustc_codegen_ssa/src/errors.rs index 46d7cfe87e6..f846e679860 100644 --- a/compiler/rustc_codegen_ssa/src/errors.rs +++ b/compiler/rustc_codegen_ssa/src/errors.rs @@ -1024,6 +1024,28 @@ pub struct FailedToGetLayout<'tcx> { pub err: LayoutError<'tcx>, } +#[derive(Diagnostic)] +#[diag(codegen_ssa_dlltool_fail_import_library)] +pub(crate) struct DlltoolFailImportLibrary<'a> { + pub dlltool_path: Cow<'a, str>, + pub dlltool_args: String, + pub stdout: Cow<'a, str>, + pub stderr: Cow<'a, str>, +} + +#[derive(Diagnostic)] +#[diag(codegen_ssa_error_writing_def_file)] +pub(crate) struct ErrorWritingDEFFile { + pub error: std::io::Error, +} + +#[derive(Diagnostic)] +#[diag(codegen_ssa_error_calling_dlltool)] +pub(crate) struct ErrorCallingDllTool<'a> { + pub dlltool_path: Cow<'a, str>, + pub error: std::io::Error, +} + #[derive(Diagnostic)] #[diag(codegen_ssa_error_creating_remark_dir)] pub struct ErrorCreatingRemarkDir {