docs: Added Gentoo packages.

README.md

@@ -49,12 +49,13 @@ This project is the desktop client version of SAST Evento.
 
 | Platform           | Status | Instruction       |
 | ------------------ | ------ | ----------------- |
-| Windows x64        | ✅      |
+| Windows x64        | ✅     |                   |
 | Windows arm64      | :x:    | No packaging plan |
-| macOS arm64        | ✅      |
+| macOS arm64        | ✅     |                   |
 | macOS x64          | :x:    | No packaging plan |
-| Linux x64 (pacman) | ✅      |
-| Linux x64 (deb)    | ✅      |
+| Linux x64 (pacman) | ✅     |                   |
+| Linux x64 (portage)| ✅     |                   |
+| Linux x64 (deb)    | ✅     |                   |
 | Linux x64 (rpm)    | :x:    | No packaging plan |
 | Linux x64 (nix)    | :x:    | No packaging plan |
 | Linux arm64        | :x:    | No packaging plan |
@@ -75,6 +76,17 @@ yay -S sast-evento
 
 If you don't like AUR or if you are using other platforms, you can download the latest release from the [GitHub Release](https://github.com/NJUPT-SAST/sast-evento/releases) page.
 
+Gentoo Linux
+
+```bash
+# Add corcodile overlay.
+emerge -av eselect-repository
+eselect repository add corcodile git https://github.com/f3rmata/corcodile.git
+
+# Using spdlog in overlay to fix the bundled fmt issue.
+emerge -av spdlog::corcodile sast-evento
+```
+
 ## Development
 
 ### Prerequisites

doc/README_zh.md

@@ -49,12 +49,13 @@ SAST Evento 是一个 SAST 的事件管理系统，平时我们在活动过程
 
 | 平台               | 状态 | 说明         |
 | ------------------ | ---- | ------------ |
-| Windows x64        | ✅   |
+| Windows x64        | ✅   |              |
 | Windows arm64      | :x:  | 暂无打包计划 |
-| macOS arm64        | ✅   |
+| macOS arm64        | ✅   |              |
 | macOS x64          | :x:  | 暂无打包计划 |
-| Linux x64 (pacman) | ✅   |
-| Linux x64 (deb)    | ✅   |
+| Linux x64 (pacman) | ✅   |              |
+| Linux x64 (portage)| ✅   |              |
+| Linux x64 (deb)    | ✅   |              |
 | Linux x64 (rpm)    | :x:  | 暂无打包计划 |
 | Linux x64 (nix)    | :x:  | 暂无打包计划 |
 | Linux arm64        | :x:  | 暂无打包计划 |
@@ -75,6 +76,17 @@ yay -S sast-evento-bin
 
 如果不想使用 AUR，或者使用其他系统，您可以在 [GitHub Release](https://github.com/NJUPT-SAST/sast-evento/releases) 页面下载最新的安装包。
 
+Gentoo Linux
+
+```bash
+# Add corcodile overlay.
+emerge -av eselect-repository
+eselect repository add corcodile git https://github.com/f3rmata/corcodile.git
+
+# Using spdlog in overlay to fix the bundled fmt issue.
+emerge -av spdlog::corcodile sast-evento
+```
+
 ## 参与开发
 
 ### 先决条件