macosx 安装rust的问题

Question

sudo port install rust


报错如下：
:info:build           Undefined symbols for architecture x86_64:
:info:build             "_getentropy", referenced from: 
:info:build                 std::sys::unix::rand::imp::fill_bytes::h1e6f730ecd7d963f in std-35a9205a1c5a5e53.std.d632d37dc9be385b-cgu.13.rcgu.o
:info:build             "_clock_gettime", referenced from: 
:info:build                 std::sys::unix::time::Timespec::now::h767a5632f4dda4a4 (.llvm.2194402991643703167) in std-35a9205a1c5a5e53.std.d632d37dc9be385b-cgu.11.rcgu.o
:info:build           ld: symbol(s) not found for architecture x86_64
:info:build           clang: error: linker command failed with exit code 1 (use -v to see invocation) 
:info:build      
:info:build error: could not compile `std` (lib) due to previous error 
:info:build Build completed unsuccessfully in 0:00:29
:info:build make: *** [all] Error 1
:info:build make: Leaving directory `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_rust/rust/work/rustc-1.75.0-src'
:info:build Command failed:  cd "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_rust/rust/work/rustc-1.75.0-src" && /usr/bin/make -j4 -w all BOOTSTRAP_ARGS="-j4" 
:info:build Exit code: 2
:error:build Failed to build rust: command execution failed
:debug:build Error code: CHILDSTATUS 59164 2
:debug:build Backtrace: command execution failed 
:debug:build     while executing
:debug:build "system {*}$notty {*}$callback {*}$nice $fullcmdstring"
:debug:build     invoked from within 
:debug:build "command_exec -callback portprogress::target_progress_callback build"
:debug:build     (procedure "portbuild::build_main" line 10)
:debug:build     invoked from within
:debug:build "$procedure $targetname"
:error:build See /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_rust/rust/main.log for details.

Answer 1

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看起来你在尝试通过 MacPorts 在 macOS 上安装 Rust，但遇到了编译错误。这个错误提示是由于缺少一些在 macOS Big Sur 及更高版本上默认不再提供的系统库函数（如 _getentropy 和 _clock_gettime)。

为了解决这个问题，你需要手动安装一个名为 libbsd 的依赖包，它包含了缺失的这些函数。你可以按照以下步骤操作：

1. 首先更新 MacPorts：

   sudo port selfupdate
   

2. 然后安装 libbsd 包：

   sudo port install libbsd
   

3. 安装完成后，再次尝试安装 Rust：

   sudo port install rust
   

这样应该可以解决编译时的链接错误，并成功安装 Rust。如果仍然遇到问题，可能需要检查其他潜在的依赖项，或者确保你的 macOS 系统已更新到最新版本。