我已经成功地在Mac上编译了一个由GCC编写的C程序,并直接从源码安装了GD2库。现在,我正在尝试通过MacPorts安装GD2库,并收到以下错误消息:plotgeometry.cgdImagePng'
plotgeometry.c:809: warning: implicit declaration of function 'gdImageDes
/apache2: Relink `/lib/x86_64-linux-gnu/libnss_systemd.so.2' with `/lib/x86_64-linux-gnu/librt.so.1'`/lib/x86_64-linux-gnu/libnss_systemd.so.2' with `/lib/x86_64-linux-gnu/librt.so.1