installation of package xx had non-zero exit status

在安装包时如遇到非零错误:

• 手动在CRAN下载包，注意依赖，CRAN页面中以import:xxx标出

install.packages("~/Downloads/MathiasHarrer-dmetar-17a76a3.tar.gz", repos = NULL, type = "source")

• 检查 gcc,gcc-fortran环境

sudo apt install gcc-fortran
sudo pacman -S gcc-fortran

• 检查依赖包是否不在已选镜像内，考虑去github手动下载
  例：

ERROR: dependencies ‘esc’, ‘gridExtra’, ‘netmeta’, ‘ggrepel’, ‘poibin’, ‘MuMIn’, ‘igraph’, ‘flexmix’, ‘factoextra’, ‘fpc’, ‘cowplot’, ‘mvtnorm’ are not available for package ‘dmetar’
* removing ‘/home/jsao/R/x86_64-pc-linux-gnu-library/3.6/dmetar’

依次检查：

‘esc’, ‘gridExtra’, ‘netmeta’, ‘ggrepel’, ‘poibin’, ‘MuMIn’, ‘igraph’, ‘flexmix’, ‘factoextra’, ‘fpc’, ‘cowplot’, ‘mvtnorm’