> For the complete documentation index, see [llms.txt](https://overleaf-pro.ayaka.space/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://overleaf-pro.ayaka.space/texlive/zh-tw/ji-neng/xin-zeng-latex-xiang-yi-xiang-mu.md).

# 新增 LaTeX 相依項目

如果你有 `.cls`, `.sty`, `.bst` 專案中的檔案，除非它們放在頂層，否則 Overleaf 的編譯程序將無法找到這些檔案。

然而，為了整理你的專案，你可能會想把這些檔案放進資料夾中，這樣更容易找到，也能讓專案頂層不那麼雜亂。

好消息是，我們可以指定自訂的 `TEXINPUTS` 目錄，使用 `latexmkrc` 檔案，讓 Overleaf 知道需要在該目錄中搜尋套件檔案。

要這麼做，假設你已將這些套件檔案放在一個名為 `tex/`；以及將參考文獻樣式檔分別放在一個名為 `bst/`:

1. 點擊專案側邊欄頂端的「新增檔案」。
2. 選擇「空白檔案」，並將檔名儲存為 `latexmkrc` （如果尚未存在）。
3. 在以下位置加入這一行： `latexmkrc`:

   ```perl
   $ENV{'TEXINPUTS'}='./tex//:' . $ENV{'TEXINPUTS'}; 
   $ENV{'BSTINPUTS'}='./bst//:' . $ENV{'BSTINPUTS'};
   ```

   （或改成你專案中對應的資料夾名稱）

Overleaf 現在會先搜尋 `tex/` 資料夾，然後才搜尋系統 `TEXINPUTS` 以定位套件檔案，並且 `bst/` 資料夾，然後才搜尋系統 `BSTINPUTS` 以定位參考文獻樣式檔。

（來源： <https://tex.stackexchange.com/a/50847>)

{% hint style="info" %}
你的主文件檔以及你的 `latexmkrc` 檔案必須保留在專案頂層，而不是放在資料夾中。
{% endhint %}


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