ERROR in cling::CIFactory::createCI(): cannot extract standard library include paths!

[Shreya_Saha]

Hello,
I am trying to install ROOT v6.12.04on Mac OS Sierra 10.12.6 and it gives me the following error related to Cling. I have re accepted the XCode license as well, still gives the same error.

ERROR in cling::CIFactory::createCI(): cannot extract standard library include paths!
Invoking:
  LC_ALL=C /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/c++   -O2 -DNDEBUG -xc++ -E -v /dev/null 2>&1 >/dev/null | awk '/^#include </,/^End of search/{if (!/^#include </ && !/^End of search/){ print }}' | GREP_OPTIONS= grep -E "(c|g)\+\+"
Results was:
With exit code 256
input_line_1:1:10: fatal error: 'new' file not found
#include <new>
         ^~~~~
input_line_3:36:10: fatal error: 'string' file not found
#include <string>

Any help is appreciated !

[Axel]

What’s the output of

/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/c++ -O2 -DNDEBUG -xc++ -E -v /dev/null

?

[Shreya_Saha]

Hi Axel,
Extremely sorry for the late reply. .Following is the output -
-bash:

/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/c++: No such file or directory

Let me know if that helps to solve this error.
Thank you
Best,
Shreya

[Shreya_Saha]

Hi Axel,
So I moved my XCode.app to my Applications folder and ran the same command as before and following is the output -

Apple LLVM version 9.0.0 (clang-900.0.38)
Target: x86_64-apple-darwin16.7.0
Thread model: posix
InstalledDir: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin
 "/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang" -cc1 -triple x86_64-apple-macosx10.12.0 -Wdeprecated-objc-isa-usage -Werror=deprecated-objc-isa-usage -E -disable-free -disable-llvm-verifier -discard-value-names -main-file-name null -mrelocation-model pic -pic-level 2 -mthread-model posix -mdisable-fp-elim -fno-strict-return -masm-verbose -munwind-tables -target-cpu penryn -target-linker-version 302.3.1 -v -dwarf-column-info -debugger-tuning=lldb -resource-dir /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/clang/9.0.0 -D NDEBUG -stdlib=libc++ -O2 -fdeprecated-macro -fdebug-compilation-dir /Applications -ferror-limit 19 -fmessage-length 115 -stack-protector 1 -fblocks -fobjc-runtime=macosx-10.12.0 -fencode-extended-block-signature -fcxx-exceptions -fexceptions -fmax-type-align=16 -fdiagnostics-show-option -fcolor-diagnostics -vectorize-loops -vectorize-slp -o - -x c++ /dev/null
clang -cc1 version 9.0.0 (clang-900.0.38) default target x86_64-apple-darwin16.7.0
ignoring nonexistent directory "/usr/include/c++/v1"
ignoring nonexistent directory "/usr/local/include"
#include "..." search starts here:
#include <...> search starts here:
 /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1
 /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/clang/9.0.0/include
 /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include
 /usr/include
 /System/Library/Frameworks (framework directory)
 /Library/Frameworks (framework directory)
End of search list.
# 1 "/dev/null"
# 1 "<built-in>" 1
# 1 "<built-in>" 3
# 342 "<built-in>" 3
# 1 "<command line>" 1
# 1 "<built-in>" 2
# 1 "/dev/null" 2

[Shreya_Saha]

Hi Alex,
I just moved the XCode.app to the same place where I have the Root folder, It works well now !
Thank you.

Best,
Shreya

[Axel]

Moving Xcode to the Applications folder should have done the trick.