mysql - 如何将 Homebrew 安装的 mysql-client 与 diesel-cli 链接起来？

Question

我一直在尝试使用 cargo install diesel_cli 安装 Rust Diesel CLI 工具，但安装失败并出现链接错误

ld: library not found for -lmysqlclient
 clang: error: linker command failed with exit code 1 
(use -v to see invocation)

我使用 Homebrew 安装了 MySQL 客户端:brew install mysql-client。在安装过程中，我收到以下警告:

mysql-client is keg-only, which means it was not symlinked into /usr/local,
because conflicts with mysql.
If you need to have mysql-client first in your PATH run:
  echo 'export PATH="/usr/local/opt/mysql-client/bin:$PATH"' >> ~/.bash_profile
For compilers to find mysql-client you may need to set:
  export LDFLAGS="-L/usr/local/opt/mysql-client/lib"
  export CPPFLAGS="-I/usr/local/opt/mysql-client/include”

我按照警告消息中的方式设置了 PATH 和标志，但是在尝试安装 diesel-cli 工具时我仍然遇到上述链接错误。我不熟悉如何在 Rust 中进行链接——我需要在这里执行额外的步骤来直接链接 mysqlclient 吗？

Answer 1

Cargo 忽略 LDFLAGS 和 CPPFLAGS，您应该改为设置 RUSTFLAGS。像这样未经测试的调用:

RUSTFLAGS="-L/your_lib -I/your_include" cargo install diesel_cli

Relevant documentation .