我正在尝试在 R-Studio 中安装 'yaml' 和 'stringi' 包,它不断给我这些错误:
> install.packages("stringi")
Package which is only available in source form, and may need compilation of C/C++/Fortran: ‘stringi’
These will not be installed
或者
> install.packages('yaml')
Package which is only available in source form, and may need compilation of C/C++/Fortran: ‘yaml’
These will not be installed
我怎样才能让这些正确安装?