make: llvm-gcc-4.2: No such file or directory

[Timothy Bates]

Hi, helping people with devtools and they get stumped with this error

> devtools::install_github("devtools")

...

make: llvm-gcc-4.2: No such file or directory

It would be great for this and other functions (i.e., devtools::has_devel()) to have some help for users inside that error along the lines provided by Rcpp:

e.g.:

Rcpp::evalCpp("1+1")

...

WARNING: The tools required to build C++ code for R were not found.

Please install Command Line Tools for XCode (or equivalent).

PS: Is the answer to this issue ever re-writing the make file manually?  as this post states

http://stackoverflow.com/questions/19503995/error-when-with-xcode-5-0-and-rcpp-command-line-tools-are-installed/19505252#19505252

Or is it always an issue of not having xcode installed?

PPS: Is it a bug for a mac user to be seeing "arguments 'minimized' and 'invisible' are for Windows only"?

[Timothy Bates]

Some more info on installing cmd line tools, and CC=clang vs CC=llvm-gcc

1. With XCode 5.0.1+/Mavericks, cmd tools are no longer installed. You can do this from the terminal, however:

 

xcode-select --install

softwareupdate -l

sudo softwareupdate -i -a

http://stackoverflow.com/questions/19066647/xcode-5-0-error-installing-command-line-tools?rq=1 

After that, I still don't have an llvm-gcc-4.2. These are the "llvm-g*" applications I see:

llvm-g++  llvm-gcc 

FYI "llvm-gcc --version" says

Apple LLVM version 5.0 (clang-500.2.79) (based on LLVM 3.3svn)

Target: x86_64-apple-darwin13.1.0

Thread model: posix

2. This Hadley endorsed item on Stackoverflow suggests modifying  

    /Library/Frameworks/R.framework/Resources/etc/Makeconf

changing

CC = llvm-gcc-4.2 -arch x86_64 -std=gnu99

CXX = llvm-g++-4.2 -arch x86_64

to 

CC=clang 

CXX=clang++

Is that because XCode installs clang by default and llvm is not needed? If so, why is devtools failing on not finding llvm-gcc (and why does it specify 4.2 when Mavericks installs 3.2 by the look of it? 

[Timothy Bates]

OK: If you have installed XCode 5.0.1 or higher on Mavericks, it looks like all you need to do to get devtools working is edit

/Library/Frameworks/R.framework/Resources/etc/Makeconf

changing the CC and CXX lines to read:

CC=clang 

CXX=clang++

then devtools::install_github("devtools") runs fine.

 

[Ahmad Mohammad]

Thank you very Much . you save my day .