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如何修复 Rust 错误：failed to run custom build command for

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问题

在构建 Rust 项目时，你遇到以下错误：

rust_fontconfig_error.txt
error: failed to run custom build command for `yeslogic-fontconfig-sys v6.0.0`

Caused by:
  process didn't exit successfully: `/home/uli/mkstatuslogs-rs/target/debug/build/yeslogic-fontconfig-sys-35b190da65259604/build-script-build` (exit status: 101)
  --- stdout
  cargo:rerun-if-env-changed=RUST_FONTCONFIG_DLOPEN
  cargo:rerun-if-env-changed=FONTCONFIG_NO_PKG_CONFIG
  cargo:rerun-if-env-changed=PKG_CONFIG_x86_64-unknown-linux-gnu
  cargo:rerun-if-env-changed=PKG_CONFIG_x86_64_unknown_linux_gnu
  cargo:rerun-if-env-changed=HOST_PKG_CONFIG
  cargo:rerun-if-env-changed=PKG_CONFIG
  cargo:rerun-if-env-changed=FONTCONFIG_STATIC
  cargo:rerun-if-env-changed=FONTCONFIG_DYNAMIC
  cargo:rerun-if-env-changed=PKG_CONFIG_ALL_STATIC
  cargo:rerun-if-env-changed=PKG_CONFIG_ALL_DYNAMIC
  cargo:rerun-if-env-changed=PKG_CONFIG_PATH_x86_64-unknown-linux-gnu
  cargo:rerun-if-env-changed=PKG_CONFIG_PATH_x86_64_unknown_linux_gnu
  cargo:rerun-if-env-changed=HOST_PKG_CONFIG_PATH
  cargo:rerun-if-env-changed=PKG_CONFIG_PATH
  cargo:rerun-if-env-changed=PKG_CONFIG_LIBDIR_x86_64-unknown-linux-gnu
  cargo:rerun-if-env-changed=PKG_CONFIG_LIBDIR_x86_64_unknown_linux_gnu
  cargo:rerun-if-env-changed=HOST_PKG_CONFIG_LIBDIR
  cargo:rerun-if-env-changed=PKG_CONFIG_LIBDIR
  cargo:rerun-if-env-changed=PKG_CONFIG_SYSROOT_DIR_x86_64-unknown-linux-gnu
  cargo:rerun-if-env-changed=PKG_CONFIG_SYSROOT_DIR_x86_64_unknown_linux_gnu
  cargo:rerun-if-env-changed=HOST_PKG_CONFIG_SYSROOT_DIR
  cargo:rerun-if-env-changed=PKG_CONFIG_SYSROOT_DIR

  --- stderr

  thread 'main' (3801409) panicked at /home/uli/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/yeslogic-fontconfig-sys-6.0.0/build.rs:8:48:
  called `Result::unwrap()` on an `Err` value: "\npkg-config exited with status code 1\n> PKG_CONFIG_ALLOW_SYSTEM_LIBS=1 PKG_CONFIG_ALLOW_SYSTEM_CFLAGS=1 pkg-config --libs --cflags fontconfig\n\npkg-config output:\n  Package fontconfig was not found in the pkg-config search path.\n  Perhaps you should add the directory containing `fontconfig.pc'\n  to the PKG_CONFIG_PATH environment variable\n  Package 'fontconfig', required by 'virtual:world', not found\n\nThe system library `fontconfig` required by crate `yeslogic-fontconfig-sys` was not found.\nThe file `fontconfig.pc` needs to be installed and the PKG_CONFIG_PATH environment variable must contain its parent directory.\nThe PKG_CONFIG_PATH environment variable is not set.\n\nHINT: if you have installed the library, try setting PKG_CONFIG_PATH to the directory containing `fontconfig.pc`.\n"
  note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
warning: build failed, waiting for other jobs to finish...

解决方案

错误信息表明你的系统中缺少 fontconfig 库。

在 Ubuntu 等 Linux 发行版上，使用以下命令安装：

install_fontconfig.sh
sudo apt install libfontconfig-dev

已在 Ubuntu 24.04 LTS 上测试通过。

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