# x86_64-elf-gcc を Homebrew, MacPorts でインストール x86_64-elf-gcc のインストール経路、実行ファイル、メタデータ、AI エージェント向けセキュリティノートを確認します。 ## インストール ```sh sudo av install brew:x86_64-elf-gcc ``` 追加のインストールコマンド: ### macOS - Homebrew (100%): ```sh brew install x86_64-elf-gcc ``` 証拠: local Homebrew formula metadata - MacPorts (94%): ```sh sudo port install x86_64-elf-gcc ``` 証拠: MacPorts ports tree: cross/x86_64-elf-gcc/Portfile from https://api.github.com/repos/macports/macports-ports/git/trees/master?recursive=1 ## パッケージ情報 - **パッケージキー:** brew:x86_64-elf-gcc - **パッケージマネージャ:** Homebrew - **バージョン:** 16.1.0 - **ソース概要:** GNU compiler collection for x86_64-elf - **ホームページ:** - **生成日時:** 2026-08-03T19:37:03+00:00 ## 実行可能ファイル - x86_64-elf-c++ (エイリアス) - x86_64-elf-cpp (エイリアス) - x86_64-elf-g++ (エイリアス) - x86_64-elf-gcc (エイリアス) - x86_64-elf-gcc-16.1.0 (エイリアス) - x86_64-elf-gcc-ar (エイリアス) - x86_64-elf-gcc-nm (エイリアス) - x86_64-elf-gcc-ranlib (エイリアス) - x86_64-elf-gcov (エイリアス) - x86_64-elf-gcov-dump (エイリアス) - x86_64-elf-gcov-tool (エイリアス) - x86_64-elf-lto-dump (エイリアス) ## インストール挙動 - Bottle: 利用不可 ## バージョンと鮮度 - ページ生成日: 2026-08-03 - マネージャ版: 16.1.0 ## プロジェクトの歴史と使われ方 x86_64-elf-gcc is GCC built as a cross compiler for the `x86_64-elf` target. Its package role is not to be a separate compiler project, but to provide the GNU Compiler Collection configured for freestanding 64-bit x86 ELF output without assuming the host operating system's headers, C library, startup files, or ABI conventions. That makes it a standard tool for operating-system kernels, bootloaders, freestanding runtimes, and bare-metal experiments. It usually works together with `x86_64-elf-binutils`, which supplies the matching target assembler, linker, and object-file tools. ### プロジェクトの歴史 GCC began as the GNU C Compiler, written for the GNU operating system and first released in 1987. It later expanded into the GNU Compiler Collection, with official front ends for C, C++, Objective-C, Objective-C++, Fortran, Ada, Go, D, Modula-2, COBOL, Rust, Algol 68, and related runtime libraries documented by the GCC project. The GCC governance and release story also matters to cross packages. GCC's 2.95 release in July 1999 was the first after the GCC/EGCS reunification, and the project has since been maintained by a global developer community under a steering committee. The modern GCC site emphasizes regular releases that work across native and cross targets. ### 採用の歴史 Cross compilation has been central to GCC's identity because GCC supports many processors and systems. The official GCC homepage explicitly says the project aims for releases that work on a variety of native and cross targets, while OSDev documentation explains why hobby OS and kernel developers build target-specific GCCs instead of relying on the host compiler. For `x86_64-elf`, adoption is concentrated in OSDev and freestanding x86-64 work. The target prefix lets build systems call `x86_64-elf-gcc` and get code-generation defaults for x86-64 ELF rather than the host triple. OSDev guidance also notes that a target-specific compiler removes the need to pass host-overriding options such as `-m64` for every build. ### 使われ方 Typical users compile freestanding C or C++ with options such as `-ffreestanding`, link with a custom linker script, and provide their own runtime entry point instead of relying on a hosted C library. The compiler may also be used as the driver for assembly and linking so it selects the matching target Binutils tools. In kernel work, x86-64 has hardware and ABI details that package users must understand beyond simply choosing this compiler. OSDev material commonly calls out issues such as separate 32-bit and 64-bit toolchains, bootloader expectations, and x86-64 red-zone behavior; the package gives the target compiler, but the build still has to define the freestanding environment correctly. ### パッケージ好きにとっての重要性 x86_64-elf-gcc is important because it packages the first serious bootstrap hurdle of hobby OS development. Instead of every user manually building a cross GCC, the package provides a stable prefixed compiler that can be dropped into Makefiles and tutorials. It is also a clear example of how package names can describe configuration rather than upstream identity. The upstream is GCC; the meaningful package distinction is the target triple, which changes what the compiler assumes about object format, runtime, and operating-system services. ### タイムライン - 1987-03-22: GCC 1.0 is first released as the GNU C Compiler. - 1999-04: The EGCS steering committee is appointed as the official GCC maintainer after the GCC/EGCS reunification process. - 1999-07-31: GCC 2.95 is released as the first GCC release after GCC/EGCS reunification. - 2000s: OSDev communities popularize target-prefixed GCC cross compilers such as `i686-elf-gcc` and later `x86_64-elf-gcc` for freestanding kernels. - 2026-04-30: GCC 16.1 is released, and the GCC homepage lists ongoing support for native and cross targets. ### Related projects - GNU Binutils provides the assembler, linker, and object tools required by a matching `x86_64-elf` GCC toolchain. - GDB is commonly built as a target-aware debugger alongside cross GCC and Binutils. - Newlib and other small C libraries are used when a freestanding cross compiler grows into a hosted embedded or OS-specific toolchain. - LLVM/Clang can also target freestanding x86-64 ELF workflows, often with `lld` and LLVM binary tools. ### ソース - - - - - - - - ## セキュリティノート narrow executable package without higher-risk signals. - **Geiger リスク:** グリーン / 低 - narrow executable package without higher-risk signals ## 他のパッケージマネージャ記録 - MacPorts - x86_64-elf-gcc: normalized package name match | MacPorts ports tree: cross/x86_64-elf-gcc/Portfile from https://api.github.com/repos/macports/macports-ports/git/trees/master?recursive=1 ## Combined YAML source View the package source record on GitHub. [combined/x86_64-elf-gcc.yml](https://github.com/mxcl/pkgdb/blob/main/combined/x86_64-elf-gcc.yml) ## ソース - pkg.so package database - Geiger risk classifier - curated package history - pkgdb category and tag curation - external package-manager database matches - cross-ecosystem install command graph