how to install RODBC on macOS Sierra 10.12.4
问题 In R 3.4.0, install.packages('RODBC', type='source') fails on macOS 10.12.4. I also downloaded RODBC_1.3-15.tar.gz from CRAN and tried, R CMD INSTALL RODBC_1.3-15.tar.gz In both cases, I got "ODBC headers sql.h and sqlext.h not found". A discussion of this in Installation of RODBC/ROracle packages on OS X Mavericks says the following: To fix this, you need to download the latest version of iODBC (www.iodbc.org), and then unzip the file and set your header and library search paths to the