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clang: error:: errorunsupported option '-fopenmp' on Mac OSX El Capitan building XGBoost

[英]clang: error: : errorunsupported option '-fopenmp' on Mac OSX El Capitan building XGBoost

我正在尝试按照以下说明为 Python 构建XGBoost包:

这是使用支持 OpenMP 的编译器安装 XGBoost 的完整解决方案。 通过brew install gcc --without-multilib获取支持 openmp 的 gcc-5.xx。 (brew 是 OS X 上 apt-get 的事实上的标准。所以不建议单独安装 HPC,但它应该可以工作。):

git clone --recursive https://github.com/dmlc/xgboost
cd xgboost; cp make/config.mk ./config.mk; make -j4

此错误恰好发生在make -j4命令中。

搜索之前,我已经尝试了这两种解决方案( 12 ),但无济于事,除了因害怕搞砸一切而安装另一个 gcc 的部分。

下面是make配置文件。 它没有任何可疑之处。

#-----------------------------------------------------
#  xgboost: the configuration compile script
#
#  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
#
#  $ cp make/config.mk .
#
#  Next modify the according entries, and then compile by
#
#  $ make
#
#  or build in parallel with 8 threads
#
#  $ make -j8
#----------------------------------------------------

# choice of compiler, by default use system preference.
# export CC = gcc
# export CXX = g++
# export MPICXX = mpicxx

# the additional link flags you want to add
ADD_LDFLAGS =

# the additional compile flags you want to add
ADD_CFLAGS =

# Whether enable openmp support, needed for multi-threading.
USE_OPENMP = 1

# whether use HDFS support during compile
USE_HDFS = 0

# whether use AWS S3 support during compile
USE_S3 = 0

# whether use Azure blob support during compile
USE_AZURE = 0

# Rabit library version,
# - librabit.a Normal distributed version.
# - librabit_empty.a Non distributed mock version,
LIB_RABIT = librabit.a

# path to libjvm.so
LIBJVM=$(JAVA_HOME)/jre/lib/amd64/server

# List of additional plugins, checkout plugin folder.
# uncomment the following lines to include these plugins
# you can also add your own plugin like this
#
# XGB_PLUGINS += plugin/example/plugin.mk

您使用 Homebrew 安装了gcc ,但错误来自clang 这应该只是意味着您的默认编译器仍然指向clang而不是新安装的gcc 如果您阅读 Makefile 中的注释,您将看到以下几行:

# choice of compiler, by default use system preference.
# export CC = gcc
# export CXX = g++
# export MPICXX = mpicxx

在你的情况下,你不想要系统。
注意:系统的gcc指向clang

$ which gcc
/usr/bin/gcc
$ gcc --version
Configured with: --prefix=/Applications/Xcode.app/Contents/Developer/usr --with-gxx-include-dir=/usr/include/c++/4.2.1
Apple LLVM version 7.3.0 (clang-703.0.29)
Target: x86_64-apple-darwin15.4.0
Thread model: posix
InstalledDir: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin

相反,将这些变量指向/usr/local/bin某些内容,例如:

$ export CC=/usr/local/bin/gcc

和其他两个变量类似, CXXMPICXX ,例如:

$ export CC=/usr/local/bin/gcc;CXX=/usr/local/bin/g++;MPICXX=/usr/local/bin/mpicxx

先生,也许你应该使用

cd xgboost; cp make/minimum.mk ./config.mk; 制作 -j4

而不是

cd xgboost; cp make/config.mk ./config.mk; 制作 -j4

根据构建文档的“Build On OSX”部分

为了解决这个问题,我做了以下事情:我意识到我安装了gcc 6,所以我跑了:

export CC=gcc-6

但它本身不起作用,所以我还必须:

export CXX=g++-6

这为我解决了它。 我在运行 macOS Sierra 的 Macbook Pro 中。 如果需要,您也可以直接在 XGBoost 的 Makefile 上进行这些更改。 有关更多信息: https : //www.ibm.com/developerworks/community/blogs/jfp/entry/Installing_XGBoost_on_Mac_OSX?lang=en

无法编译本机 libxgboost.dylib 库,请检查此解决方法

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