theano g++ 未检测到，但我已成功安装 g++

Question

成功安装theano后，我使用：

import theano

它只是向我显示警告：

WARNING (theano.configdefaults): g++ not detected ! Theano will be unable to execute optimized C-implementations (for both CPU and GPU) and will
 default to Python implementations. Performance will be severely degraded. To remove this warning, set Theano flags cxx to an empty string.

g++ 未检测到！但是我已经成功安装了 g++:

C:\Users\dell>g++ -v
Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=d:/mingw/bin/../libexec/gcc/mingw32/4.9.3/lto-wrapper.exe
Target: mingw32
Configured with: ../src/gcc-4.9.3/configure --build=x86_64-pc-linux-gnu --host=mingw32 --prefix=/mingw --disable-win32-registry --target=mingw32 --with-arch=i586 --enable-languages=c,c++,objc,obj-c++,
fortran,ada --enable-static --enable-shared --enable-threads --with-dwarf2 --disable-sjlj-exceptions --enable-version-specific-runtime-libs --enable-libstdcxx-debug --with-tune=generic --enable-nls
Thread model: win32
gcc version 4.9.3 (GCC)

我想优化我的程序并使用GPU加速，我该如何解决这个问题？非常感谢！

Win7,64操作系统
已安装 MinGW
Pycharm
theano-0.8.2, python2.7

Answer 1

我第一次import theano的时候遇到错误error: '::hypot' has not been declared，我跟着成功导入了。

然后以下步骤在 win10 上对我有效

安装mingw64
将 C:\Program Files\mingw-w64\mingw64\bin 添加到 PATH
重启电脑

然后警告消失了

theano g++ 未检测到，但我已成功安装 g++

theano g++ not detected, But I have successfully installed g++

python

g++

pycharm

theano

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