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Fixed OpenMP installation on MacOSX with gcc-6 (#1460)

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* Fixed OpenMP installation on MacOSX with gcc-6

- Modified makefile from gcc-5 to gcc-6
- Removed deprecated install instructions from doc (gcc-5 was automatically forced if available in makefile on OSX)

* Fixed OpenMP installation on MacOSX with gcc-6

- Modified makefile from gcc-5 to gcc-6
- Removed deprecated install instructions from doc (gcc-5 was automatically forced if available in makefile on OSX)
This commit is contained in:
Francesco Mosconi 2016-08-22 10:30:34 -07:00 committed by Tianqi Chen
parent 93e85139bc
commit d754ce7dc1
3 changed files with 9 additions and 29 deletions
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10
Makefile
View File

@ -33,18 +33,18 @@ include $(XGB_PLUGINS)
# use customized config file
ifndef CC
export CC = $(if $(shell which gcc-5),gcc-5,gcc)
export CC = $(if $(shell which gcc-6),gcc-6,gcc)
endif
ifndef CXX
export CXX = $(if $(shell which g++-5),g++-5,g++)
export CXX = $(if $(shell which g++-6),g++-6,g++)
endif
# on Mac OS X, force brew gcc-5, since the Xcode c++ fails anyway
# on Mac OS X, force brew gcc-6, since the Xcode c++ fails anyway
# it is useful for pip install compiling-on-the-fly
OS := $(shell uname)
ifeq ($(OS), Darwin)
export CC = $(if $(shell which gcc-5),gcc-5,clang)
export CXX = $(if $(shell which g++-5),g++-5,clang++)
export CC = $(if $(shell which gcc-6),gcc-6,clang)
export CXX = $(if $(shell which g++-6),g++-6,clang++)
endif
export LDFLAGS= -pthread -lm $(ADD_LDFLAGS) $(DMLC_LDFLAGS) $(PLUGIN_LDFLAGS)

24
doc/build.md
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@ -69,7 +69,7 @@ See the following paragraph for OpenMP enabled xgboost.
Here is the complete solution to use OpenMP-enabled compilers to install XGBoost.
Obtain gcc-5.x.x with openmp support by `brew install gcc --without-multilib`. (`brew` is the de facto standard of `apt-get` on OS X. So installing [HPC](http://hpc.sourceforge.net/) separately is not recommended, but it should work.). Installation of `gcc` can take a while (~ 30 minutes)
Obtain gcc-6.x.x with openmp support by `brew install gcc --without-multilib`. (`brew` is the de facto standard of `apt-get` on OS X. So installing [HPC](http://hpc.sourceforge.net/) separately is not recommended, but it should work.). Installation of `gcc` can take a while (~ 30 minutes)
Now, clone the repository
@ -77,27 +77,7 @@ Now, clone the repository
git clone --recursive https://github.com/dmlc/xgboost
```
The next step is to update the compliers in xgboost's configuration file
```bash
cd xgboost
```
Open make/config.mk file and replace the following two lines
```bash
export CC = gcc
export CXX = g++
```
with
```bash
export CC = gcc-5
export CXX = g++-5
```
Now, build using the following commands
and build using the following commands
```bash
cd ..; cp make/config.mk ./config.mk; make -j4

4
make/config.mk
View File

@ -3,11 +3,11 @@
#
# If you want to change the configuration, please use the following
# steps. Assume you are on the root directory of xgboost.
# First copy the this file so that any local changes will be ignored by git
# First copy this file so that any local changes will be ignored by git
#
# $ cp make/config.mk .
#
# Next modify the according entries, and then compile by
# Next modify the according entries in the copied file and then compile by
#
# $ make
#