# Extensions > - `yes`: supported > - _blank_: not supported yet, or WIP > - `no` with issue link: confirmed to be unavailable due to issue > - `partial` with issue link: supported but not perfect due to issue ::: tip If an extension you need is missing, you can create a [Feature Request](https://github.com/crazywhalecc/static-php-cli/issues). Some extensions or libraries that the extension depends on will have some optional features. For example, the gd library optionally supports libwebp, freetype, etc. If you only use `bin/spc build gd --build-cli` they will not be included (static-php-cli defaults to the minimum dependency principle). You can use `--with-libs=` to add these libraries when compiling. When the dependent libraries of this compilation include them, gd will automatically use them to enable these features. (For example: `bin/spc build gd --with-libs=libwebp,freetype --build-cli`) Alternatively you can use `--with-suggested-exts` and `--with-suggested-libs` to enable all optional dependencies of these extensions and libraries. (For example: `bin/spc build gd --with-suggested-libs --build-cli`) If you don't know whether an extension has optional features, you can check the [spc configuration file](https://github.com/crazywhalecc/static-php-cli/tree/main/config) or use the command `bin/spc dev:extensions` (library dependency is `lib-suggests`, extension dependency is `ext-suggests`). :::