I'm trying to install dplyr from its repository, but I getting the following error.
I'm using MBP with Yosemite and Xcode 6.2 (it's a bit outdate). I found this curious, apparently, it's not a common issue as I didn't find any thread on this error message. I'm wondering what is the build tools I'm lacking here.
> devtools::install_github("hadley/dplyr")
Downloading GitHub repo hadley/dplyr@master
from URL https://api.github.com/repos/hadley/dplyr/zipball/master
Error: Could not find build tools necessary to build dplyr
This is the error I'm receiving from terminal when I try to install a package from source locally:
clang -I/Library/Frameworks/R.framework/Resources/include -DNDEBUG -I/usr/local/include -I/usr/local/include/freetype2 -I/opt/X11/include -DPLATFORM_PKGTYPE='"mac.binary.mavericks"' -fPIC -Wall -mtune=core2 -g -O2 -c pause.c -o pause.o
clang -dynamiclib -Wl,-headerpad_max_install_names -undefined dynamic_lookup -single_module -multiply_defined suppress -L/Library/Frameworks/R.framework/Resources/lib -L/opt/X11/lib -L/usr/local/lib /usr/local/lib/libcairo.a /usr/local/lib/libpixman-1.a /usr/local/lib/libfreetype.a /usr/local/lib/libfontconfig.a -lxml2 /usr/local/lib/libreadline.a -o profvis.so pause.o -F/Library/Frameworks/R.framework/.. -framework R -Wl,-framework -Wl,CoreFoundation
clang: error: no such file or directory: '/usr/local/lib/libreadline.a'
You can go to this address to download and install a newer version of Command Line Tools as well as XCode as mentioned by @alistaire, but the one you have is fine.
By the message you posted, it suggests a linkage problem. You want to create a symlink for the readline lib. Homebrew does this for us, but for some reason it didn't; so you may be able to solve this by creating the link manually with --force option as:
brew link readline --force
As a GNU project, R probably is accustomed to using GNU tools and the GCC compiler suite. I would recommend that you download the standard compilers and GNU coreutils through Homebrew: https://www.topbug.net/blog/2013/04/14/install-and-use-gnu-command-line-tools-in-mac-os-x/
libreadline is a GNU library as well, so I would assume you may encounter more problems should you not obtain GNU libraries and utility tools through a package manager.
I just fell over this problem under macOS Sierra, with Xcode installed.
I went to check that I had the gcc C compiler installed properly, so I typed
gcc --version
This resulted in the error message
xcrun: error: active developer path ("/Users/richierocks/Downloads/Xcode-beta.app/Contents/Developer") does not exist
Use `sudo xcode-select --switch path/to/Xcode.app` to specify the Xcode that you wish to use for command line developer tools, or use `xcode-select --install` to install the standalone command line developer tools.
See `man xcode-select` for more details.
I typed
sudo xcode-select --switch /Applications/Xcode.app/
Then I entered my macOS password.
After this, installing dplyr worked correctly.
