我正在尝试在r中安装"XML"包,但是会发生错误.
请告诉我出了什么问题.
OS:OS X 10.11.6
R版本:3.3.2
执行"install.packages("XML")时的错误消息如下.
* installing *source* package ‘XML’ ...
** package ‘XML’ successfully unpacked and MD5 sums checked
checking for gcc... gcc
checking for C compiler default output file name... a.out
checking whether the C compiler works... yes
checking whether we are cross compiling... no
checking for suffix of executables...
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether gcc accepts -g... yes
checking for gcc …