XGboost installation error in Mac OS X Sierra - macos

Question

Am trying to install Xgboost on my Mac. Python version is 3.6
sudo pip install xgboost
am getting the following error
Complete output from command python setup.py egg_info:
rm -f -rf build build_plugin lib bin *~ /~ //*~ ///~ /.o //*.o ///.o xgboost
clang-omp++ -std=c++0x -Wall -O3 -msse2 -Wno-unknown-pragmas -funroll-loops -Iinclude -Idmlc-core/include -Irabit/include -fPIC -fopenmp -MM -MT build/learner.o src/learner.cc >build/learner.d
/bin/sh: clang-omp++: command not found
make: * [build/learner.o] Error 127
make: Waiting for unfinished jobs....
clang-omp++ -std=c++0x -Wall -O3 -msse2 -Wno-unknown-pragmas -funroll-loops -Iinclude -Idmlc-core/include -Irabit/include -fPIC -fopenmp -MM -MT build/logging.o src/logging.cc >build/logging.d
/bin/sh: clang-omp++: command not found
make: [build/logging.o] Error 127
-----------------------------
Building multi-thread xgboost failed
Start to build single-thread xgboost
rm -f -rf build build_plugin lib bin *~ /~ //*~ ///~ /.o //*.o ///.o xgboost
clang-omp++ -std=c++0x -Wall -O3 -msse2 -Wno-unknown-pragmas -funroll-loops -Iinclude -Idmlc-core/include -Irabit/include -fPIC -fopenmp -MM -MT build/learner.o src/learner.cc >build/learner.d
/bin/sh: clang-omp++: command not found
make: [build/learner.o] Error 127
make: Waiting for unfinished jobs....
clang-omp++ -std=c++0x -Wall -O3 -msse2 -Wno-unknown-pragmas -funroll-loops -Iinclude -Idmlc-core/include -Irabit/include -fPIC -fopenmp -MM -MT build/logging.o src/logging.cc >build/logging.d
/bin/sh: clang-omp++: command not found
make: * [build/logging.o] Error 127
Successfully build single-thread xgboost
If you want multi-threaded version
See additional instructions in doc/build.md
Traceback (most recent call last):
File "", line 1, in
File "/private/tmp/pip-build-TCLoWG/xgboost/setup.py", line 29, in
LIB_PATH = libpath'find_lib_path'
File "/private/tmp/pip-build-TCLoWG/xgboost/xgboost/libpath.py", line 45, in find_lib_path
'List of candidates:\n' + ('\n'.join(dll_path)))
builtin.XGBoostLibraryNotFound: Cannot find XGBoost Libarary in the candicate path, did you install compilers and run build.sh in root path?
List of candidates:
/private/tmp/pip-build-TCLoWG/xgboost/xgboost/libxgboost.so
/private/tmp/pip-build-TCLoWG/xgboost/xgboost/../../lib/libxgboost.so
/private/tmp/pip-build-TCLoWG/xgboost/xgboost/./lib/libxgboost.so
This is what happening, I don't know what's happening.

Answer 1

Do this:
$ brew install gcc#5
$ pip install xgboost
Info here https://github.com/dmlc/xgboost/issues/1501

Answer 2

Although I installed gcc 5 (with brew), the xgboost build still used the LLVM version of gcc (7 in my case). To get the build to use gcc 5 I did:
$ brew install gcc5
$ env CC=gcc-5 CXX=g++-5 pip install xgboost
and this worked for me.
(davidread's answer helps me very much! thank you #davidread)

Answer 3

I was also facing the same problem while installing by pip but installed successfully by this link.