# Installation of G++

**URL:** <https://discourse.pymc.io/t/installation-of-g/8553>\
**Category:** Questions\
**Tags:** development\_env\
**Created:** [January 7, 2022, 7:42am UTC](https://discourse.pymc.io/t/installation-of-g/8553 "2022-01-07T07:42:16Z")\
**Posts on this page:** 17\
**Page:** 1

<div class="post-metadata">

**Author:** ![Majid-Eskafi](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.pymc.io/majid-eskafi/32/4696_2.png) [@Majid-Eskafi](https://discourse.pymc.io/u/Majid-Eskafi)\
**Post date:** [January 7, 2022, 7:42am UTC](https://discourse.pymc.io/t/installation-of-g/8553/1 "2022-01-07T07:42:16Z")

</div>

Dear colleagues,

When I use “import pymc3 as pm” and run a code I receive this warning:

WARNING (theano.configdefaults): g++ not available, if using conda: `conda install m2w64-toolchain`

Could you please let me know where I can find and install G++?  
Is there any tip or trick for installing G++?

Your reply is highly appreciated.

Yours sincerely,

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<div class="post-metadata">

**Author:** ![cluhmann](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.pymc.io/cluhmann/32/3083_2.png) [@cluhmann](https://discourse.pymc.io/u/cluhmann)\
**Post date:** [January 7, 2022, 2:45pm UTC](https://discourse.pymc.io/t/installation-of-g/8553/2 "2022-01-07T14:45:30Z")

</div>

Did you install pymc as describe in the Installation section of [this page](https://docs.pymc.io/en/v3/) (edit: this is the **version 3** link, see below)?

[Edit:] Current installation instructions can be found [here](https://www.pymc.io/projects/docs/en/stable/installation.html).

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<div class="post-metadata">

**Author:** ![Majid-Eskafi](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.pymc.io/majid-eskafi/32/4696_2.png) [@Majid-Eskafi](https://discourse.pymc.io/u/Majid-Eskafi)\
**Post date:** [January 7, 2022, 3:10pm UTC](https://discourse.pymc.io/t/installation-of-g/8553/3 "2022-01-07T15:10:51Z")

</div>

Thank you for your reply.

No! I am using PyCharm and I simply used “Python Packages” in PyCharm to install “pymc3”.  
Do you recommend to move on step by step to install “pymc3” based on the page you shared?

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<div class="post-metadata">

**Author:** ![cluhmann](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.pymc.io/cluhmann/32/3083_2.png) [@cluhmann](https://discourse.pymc.io/u/cluhmann)\
**Post date:** [January 7, 2022, 3:50pm UTC](https://discourse.pymc.io/t/installation-of-g/8553/4 "2022-01-07T15:50:28Z")

</div>

Given the somewhat involved dependencies (all that stuff that makes pymc go fast), it is strongly recommended that you install pymc and its required packages using those instructions. There are also several annoying platform-specific installation issues that those instructions take care of.

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<div class="post-metadata">

**Author:** ![Majid-Eskafi](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.pymc.io/majid-eskafi/32/4696_2.png) [@Majid-Eskafi](https://discourse.pymc.io/u/Majid-Eskafi)\
**Post date:** [January 7, 2022, 4:03pm UTC](https://discourse.pymc.io/t/installation-of-g/8553/5 "2022-01-07T16:03:05Z")

</div>

Many thanks for your reply and the recommendation.

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<div class="post-metadata">

**Author:** ![almostmeenal](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.pymc.io/almostmeenal/32/3723_2.png) [@almostmeenal](https://discourse.pymc.io/u/almostmeenal)\
**Post date:** [January 19, 2022, 9:04am UTC](https://discourse.pymc.io/t/installation-of-g/8553/6 "2022-01-19T09:04:47Z")

</div>

@Majid-Eskafi I’m wondering if your problem is solved, or is there anything else we can help you with?

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<div class="post-metadata">

**Author:** ![Majid-Eskafi](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.pymc.io/majid-eskafi/32/4696_2.png) [@Majid-Eskafi](https://discourse.pymc.io/u/Majid-Eskafi)\
**Post date:** [January 21, 2022, 3:55pm UTC](https://discourse.pymc.io/t/installation-of-g/8553/7 "2022-01-21T15:55:02Z")

</div>

@almostmeenal thank you for asking.  
Yes, I installed pmc3 from the link that @cluhmann suggested and I do not receive the same warning. However, now I am receiving this warning and I would appreciate your reply if you let me know how I can fix it:

WARNING (theano.tensor.blas): Using NumPy C-API based implementation for BLAS functions.

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<div class="post-metadata">

**Author:** ![sree\_datta](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.pymc.io/sree_datta/32/4337_2.png) [@sree\_datta](https://discourse.pymc.io/u/sree_datta)\
**Post date:** [January 22, 2022, 12:36am UTC](https://discourse.pymc.io/t/installation-of-g/8553/8 "2022-01-22T00:36:38Z")

</div>

@Majid-Eskafi this warning is telling you that a necessary library that will speed up `theano` processing is missing and hence it is going to use `Numpy C-API` based `BLAS` functions.

BLAS (Basic Linear Algebra Subprograms) is a critical foundational library for a lot of math related operations (particularly Vector and Matrix operations).

In your environment set up for `pymc3` can share the output of the command: `conda list`?

In the list can you confirm you have `libblas, libcblas, liblapack, mkl, mkl-service` installed?

At the same prompt, can you run `g++ --version` and share the version of the compiler you are using?

I have seen this warning come up when using older versions of `gcc` compilers. For me on Windows and Linux, installing the `gcc` version `11.2.0` helped.

Note, by default, based on the installation (if you are using Windows), `gcc-5.3.0` compilers are installed. You are better off upgrading to the version above I mentioned. The latest MSYS2 `gcc` suite has the 11.2.0 version available. You cannot get that from any channel on Conda, including Conda-Forge

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<div class="post-metadata">

**Author:** ![sree\_datta](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.pymc.io/sree_datta/32/4337_2.png) [@sree\_datta](https://discourse.pymc.io/u/sree_datta)\
**Post date:** [January 28, 2022, 4:29am UTC](https://discourse.pymc.io/t/installation-of-g/8553/9 "2022-01-28T04:29:15Z")

</div>

Here is a tested solution that eliminates the `blas` warning message. This solution was posted by “@KTada777” in this thread linked below:

[Windows 10, Pymc3, GCC Compilers, Blas Warnings](https://github.com/pymc-devs/pymc/issues/4937)

```auto
At this point, I created the
.theanorc
file with the following 2 lines

[blas]
ldflags = -lblas

and put it the directly just under the username (like "owner".) Then, the following warning was disappeared.
WARNING (theano.tensor.blas): Using NumPy C-API based implementation for BLAS functions.

```

If you are a Windows user, use Notepad++ to create the `.theanorc` file - **Note** there is a **.** (period) before “theanorc” file name.

Save the **.theanorc** file under `C:\Users\Your_User_Name\`

---

<div class="post-metadata">

**Author:** ![Majid-Eskafi](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.pymc.io/majid-eskafi/32/4696_2.png) [@Majid-Eskafi](https://discourse.pymc.io/u/Majid-Eskafi)\
**Post date:** [February 7, 2022, 8:13pm UTC](https://discourse.pymc.io/t/installation-of-g/8553/10 "2022-02-07T20:13:07Z")

</div>

here is the conda list:

# Name Version Build Channel

argon2-cffi 20.1.0 py38h2bbff1b\_1  
arviz 0.11.4 pypi\_0 pypi  
async\_generator 1.10 pyhd3eb1b0\_0  
attrs 21.2.0 pyhd3eb1b0\_0  
backcall 0.2.0 pyhd3eb1b0\_0  
blas 1.0 mkl  
bleach 4.1.0 pyhd3eb1b0\_0  
bottleneck 1.3.2 py38h2a96729\_1  
brotli 1.0.9 ha925a31\_2  
ca-certificates 2021.10.26 haa95532\_2  
cachetools 5.0.0 pypi\_0 pypi  
certifi 2021.10.8 py38haa95532\_0  
cffi 1.15.0 py38h2bbff1b\_0  
cftime 1.5.1.1 py38h080aedc\_0  
colorama 0.4.4 pyhd3eb1b0\_0  
curl 7.80.0 h2bbff1b\_0  
cycler 0.11.0 pyhd3eb1b0\_0  
debugpy 1.5.1 py38hd77b12b\_0  
decorator 5.1.0 pyhd3eb1b0\_0  
defusedxml 0.7.1 pyhd3eb1b0\_0  
dill 0.3.4 pyhd3eb1b0\_0  
entrypoints 0.3 py38\_0  
fastprogress 1.0.0 pyhb85f177\_0  
filelock 3.4.0 pyhd3eb1b0\_0  
fonttools 4.28.5 pypi\_0 pypi  
freetype 2.10.4 hd328e21\_0  
hdf4 4.2.13 h712560f\_2  
hdf5 1.10.6 h7ebc959\_0  
icc\_rt 2019.0.0 h0cc432a\_1  
icu 58.2 ha925a31\_3  
importlib-metadata 4.8.2 py38haa95532\_0  
importlib\_metadata 4.8.2 hd3eb1b0\_0  
intel-openmp 2021.4.0 haa95532\_3556  
ipykernel 6.4.1 py38haa95532\_1  
ipython 7.29.0 py38hd4e2768\_0  
ipython\_genutils 0.2.0 pyhd3eb1b0\_1  
ipywidgets 7.6.5 pyhd3eb1b0\_1  
jedi 0.18.0 py38haa95532\_1  
jinja2 3.0.2 pyhd3eb1b0\_0  
jpeg 9d h2bbff1b\_0  
jsonschema 3.2.0 pyhd3eb1b0\_2  
jupyter 1.0.0 py38\_7  
jupyter\_client 7.1.0 pyhd3eb1b0\_0  
jupyter\_console 6.4.0 pyhd3eb1b0\_0  
jupyter\_core 4.9.1 py38haa95532\_0  
jupyterlab\_pygments 0.1.2 py\_0  
jupyterlab\_widgets 1.0.0 pyhd3eb1b0\_1  
kiwisolver 1.3.2 pypi\_0 pypi  
libcurl 7.80.0 h86230a5\_0  
libgpuarray 0.7.6 hfa6e2cd\_0  
libnetcdf 4.6.1 hf59b723\_4  
libpng 1.6.37 h2a8f88b\_0  
libpython 2.1 py38\_0  
libssh2 1.9.0 h7a1dbc1\_1  
libtiff 4.2.0 hd0e1b90\_0  
libwebp 1.2.0 h2bbff1b\_0  
lz4-c 1.9.3 h2bbff1b\_1  
m2w64-binutils 2.25.1 5  
m2w64-bzip2 1.0.6 6  
m2w64-crt-git 5.0.0.4636.2595836 2  
m2w64-gcc 5.3.0 6  
m2w64-gcc-ada 5.3.0 6  
m2w64-gcc-fortran 5.3.0 6  
m2w64-gcc-libgfortran 5.3.0 6 conda-forge  
m2w64-gcc-libs 5.3.0 7 conda-forge  
m2w64-gcc-libs-core 5.3.0 7 conda-forge  
m2w64-gcc-objc 5.3.0 6  
m2w64-gmp 6.1.0 2 conda-forge  
m2w64-headers-git 5.0.0.4636.c0ad18a 2  
m2w64-isl 0.16.1 2  
m2w64-libiconv 1.14 6  
m2w64-libmangle-git 5.0.0.4509.2e5a9a2 2  
m2w64-libwinpthread-git 5.0.0.4634.697f757 2 conda-forge  
m2w64-make 4.1.2351.a80a8b8 2  
m2w64-mpc 1.0.3 3  
m2w64-mpfr 3.1.4 4  
m2w64-pkg-config 0.29.1 2  
m2w64-toolchain 5.3.0 7  
m2w64-tools-git 5.0.0.4592.90b8472 2  
m2w64-windows-default-manifest 6.4 3  
m2w64-winpthreads-git 5.0.0.4634.697f757 2  
m2w64-zlib 1.2.8 10  
mako 1.1.4 pyhd3eb1b0\_0  
markupsafe 2.0.1 py38h2bbff1b\_0  
matplotlib 3.5.1 pypi\_0 pypi  
matplotlib-base 3.5.0 py38h6214cd6\_0  
matplotlib-inline 0.1.2 pyhd3eb1b0\_2  
mistune 0.8.4 py38he774522\_1000  
mkl 2021.4.0 h0e2418a\_729 conda-forge  
mkl-service 2.4.0 py38h2bbff1b\_0  
mkl\_fft 1.3.1 py38h277e83a\_0  
mkl\_random 1.2.2 py38hf11a4ad\_0  
msys2-conda-epoch 20160418 1 conda-forge  
munkres 1.1.4 py\_0  
nbclient 0.5.3 pyhd3eb1b0\_0  
nbconvert 6.1.0 py38haa95532\_0  
nbformat 5.1.3 pyhd3eb1b0\_0  
nest-asyncio 1.5.1 pyhd3eb1b0\_0  
netcdf4 1.5.8 pypi\_0 pypi  
notebook 6.4.6 py38haa95532\_0  
numexpr 2.8.1 py38hb80d3ca\_0  
numpy 1.21.2 py38hfca59bb\_0  
numpy-base 1.21.2 py38h0829f74\_0  
olefile 0.46 pyhd3eb1b0\_0  
openssl 1.1.1l h2bbff1b\_0  
packaging 21.3 pyhd3eb1b0\_0  
pandas 1.3.5 py38h6214cd6\_0  
pandocfilters 1.4.3 py38haa95532\_1  
parso 0.8.3 pyhd3eb1b0\_0  
patsy 0.5.2 pypi\_0 pypi  
pickleshare 0.7.5 pyhd3eb1b0\_1003  
pillow 9.0.0 pypi\_0 pypi  
pip 21.2.2 py38haa95532\_0  
prometheus\_client 0.12.0 pyhd3eb1b0\_0  
prompt-toolkit 3.0.20 pyhd3eb1b0\_0  
prompt\_toolkit 3.0.20 hd3eb1b0\_0  
pycparser 2.21 pyhd3eb1b0\_0  
pygments 2.10.0 pyhd3eb1b0\_0  
pygpu 0.7.6 py38h2a96729\_0  
pymc3 3.11.4 py38hd4e2768\_0  
pyparsing 3.0.6 pypi\_0 pypi  
pyqt 5.9.2 py38ha925a31\_4  
pyrsistent 0.18.0 py38h196d8e1\_0  
python 3.8.12 h6244533\_0  
python-dateutil 2.8.2 pyhd3eb1b0\_0  
python\_abi 3.8 2\_cp38 conda-forge  
pytz 2021.3 pypi\_0 pypi  
pywin32 302 py38h827c3e9\_1  
pywinpty 0.5.7 py38\_0  
pyzmq 22.3.0 py38hd77b12b\_2  
qt 5.9.7 vc14h73c81de\_0  
qtconsole 5.1.1 pyhd3eb1b0\_0  
qtpy 1.10.0 pyhd3eb1b0\_0  
scipy 1.7.3 py38h0a974cb\_0  
seaborn 0.11.2 pyhd3eb1b0\_0  
semver 2.13.0 pyhd3eb1b0\_0  
send2trash 1.8.0 pyhd3eb1b0\_1  
setuptools 58.0.4 py38haa95532\_0  
sip 4.19.13 py38ha925a31\_0  
six 1.16.0 pyhd3eb1b0\_0  
sqlite 3.37.0 h2bbff1b\_0  
tbb 2021.4.0 h59b6b97\_0  
terminado 0.9.4 py38haa95532\_0  
testpath 0.5.0 pyhd3eb1b0\_0  
theano 1.0.4 py38\_0  
theano-pymc 1.1.2 py38h885f38d\_0 conda-forge  
tk 8.6.11 h2bbff1b\_0  
tornado 6.1 py38h2bbff1b\_0  
traitlets 5.1.1 pyhd3eb1b0\_0  
typing-extensions 3.10.0.2 hd3eb1b0\_0  
typing\_extensions 3.10.0.2 pyh06a4308\_0  
vc 14.2 h21ff451\_1  
vs2015\_runtime 14.27.29016 h5e58377\_2  
vs2017\_win-64 19.16.27032.1 hb4161e2\_3  
vswhere 2.8.4 haa95532\_0  
wcwidth 0.2.5 pyhd3eb1b0\_0  
webencodings 0.5.1 py38\_1  
wheel 0.37.1 pyhd3eb1b0\_0  
widgetsnbextension 3.5.1 py38\_0  
wincertstore 0.2 py38haa95532\_2  
winpty 0.4.3 4  
xarray 0.20.2 pypi\_0 pypi  
xz 5.2.5 h62dcd97\_0  
zipp 3.7.0 pyhd3eb1b0\_0  
zlib 1.2.11 h8cc25b3\_4  
zstd 1.4.9 h19a0ad4\_0

---

<div class="post-metadata">

**Author:** ![Majid-Eskafi](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.pymc.io/majid-eskafi/32/4696_2.png) [@Majid-Eskafi](https://discourse.pymc.io/u/Majid-Eskafi)\
**Post date:** [February 8, 2022, 7:25am UTC](https://discourse.pymc.io/t/installation-of-g/8553/11 "2022-02-08T07:25:15Z")

</div>

@sree_datta thank you. It worked.

I see every time a problem is solved, but still, I can not run my model. Now I do not have the same error as before. However, I receive this warning:

Problem occurred during compilation with the command line below:  
“C:\ProgramData\chocolatey\bin\g++.exe”

Any reply to solve this problem is highly appreciated.

---

<div class="post-metadata">

**Author:** ![sree\_datta](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.pymc.io/sree_datta/32/4337_2.png) [@sree\_datta](https://discourse.pymc.io/u/sree_datta)\
**Post date:** [February 10, 2022, 4:51am UTC](https://discourse.pymc.io/t/installation-of-g/8553/12 "2022-02-10T04:51:38Z")

</div>

@Majid-Eskafi Could you post the full error message? I’m making a guess that during compilation phase, the program cannot find the `g++.exe` - this is a guess; If you post the full error message I can trouble shoot better.

Can you also check if `g++.exe` is on path? What is the output when you run `g++ --version` at the command prompt?

It appears you have both m2w64 tool chain which uses version 5.3.0 and the tool chain installed via choclatey. Can you post your User PATH variable values and System PATH variable values from your Environment Variables?

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<div class="post-metadata">

**Author:** ![Majid-Eskafi](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.pymc.io/majid-eskafi/32/4696_2.png) [@Majid-Eskafi](https://discourse.pymc.io/u/Majid-Eskafi)\
**Post date:** [February 10, 2022, 7:18am UTC](https://discourse.pymc.io/t/installation-of-g/8553/13 "2022-02-10T07:18:12Z")

</div>

@sree_datta I appreciate your consideration for replying to my questions.  
I followed the [instructions](https://github.com/pymc-devs/pymc/issues/4937) you mentioned step by step.

Now, in the output of the command: “conda list” I can see:

# Name Version Build Channel

arviz 0.11.4 pypi\_0 pypi  
ca-certificates 2021.10.8 h5b45459\_0 conda-forge  
cachetools 5.0.0 pypi\_0 pypi  
cairo 1.16.0 h15b3021\_1009 conda-forge  
cftime 1.5.2 pypi\_0 pypi  
cycler 0.11.0 pypi\_0 pypi  
dill 0.3.4 pypi\_0 pypi  
expat 2.4.4 h39d44d4\_0 conda-forge  
fastprogress 1.0.0 pypi\_0 pypi  
filelock 3.4.2 pypi\_0 pypi  
font-ttf-dejavu-sans-mono 2.37 hab24e00\_0 conda-forge  
font-ttf-inconsolata 3.000 h77eed37\_0 conda-forge  
font-ttf-source-code-pro 2.038 h77eed37\_0 conda-forge  
font-ttf-ubuntu 0.83 hab24e00\_0 conda-forge  
fontconfig 2.13.96 h1989441\_0 conda-forge  
fonts-conda-ecosystem 1 0 conda-forge  
fonts-conda-forge 1 0 conda-forge  
fonttools 4.29.1 pypi\_0 pypi  
freetype 2.10.4 h546665d\_1 conda-forge  
fribidi 1.0.10 h8d14728\_0 conda-forge  
getopt-win32 0.1 h8ffe710\_0 conda-forge  
gettext 0.19.8.1 ha2e2712\_1008 conda-forge  
graphite2 1.3.13 1000 conda-forge  
graphviz 2.50.0 had6c3a3\_2 conda-forge  
gts 0.7.6 h7c369d9\_2 conda-forge  
harfbuzz 3.3.1 hc1763ed\_0 conda-forge  
icu 69.1 h0e60522\_0 conda-forge  
intel-openmp 2022.0.0 h57928b3\_3663 conda-forge  
jbig 2.1 h8d14728\_2003 conda-forge  
jpeg 9e h8ffe710\_0 conda-forge  
kiwisolver 1.3.2 pypi\_0 pypi  
lerc 3.0 h0e60522\_0 conda-forge  
libblas 3.9.0 12\_win64\_mkl conda-forge  
libcblas 3.9.0 12\_win64\_mkl conda-forge  
libdeflate 1.8 h8ffe710\_0 conda-forge  
libffi 3.4.2 h8ffe710\_5 conda-forge  
libgd 2.3.3 h217ff3b\_1 conda-forge  
libglib 2.70.2 h3be07f2\_2 conda-forge  
libiconv 1.16 he774522\_0 conda-forge  
liblapack 3.9.0 12\_win64\_mkl conda-forge  
libpng 1.6.37 h1d00b33\_2 conda-forge  
libpython 2.1 py38haa244fe\_1 conda-forge  
libtiff 4.3.0 hd413186\_2 conda-forge  
libwebp 1.2.2 h57928b3\_0 conda-forge  
libwebp-base 1.2.2 h8ffe710\_1 conda-forge  
libxcb 1.13 hcd874cb\_1004 conda-forge  
libxml2 2.9.12 hf5bbc77\_1 conda-forge  
libzlib 1.2.11 h8ffe710\_1013 conda-forge  
llvmlite 0.38.0 py38h57a6900\_0 conda-forge  
lz4-c 1.9.3 h8ffe710\_1 conda-forge  
m2w64-binutils 2.25.1 5 conda-forge  
m2w64-bzip2 1.0.6 6 conda-forge  
m2w64-crt-git 5.0.0.4636.2595836 2 conda-forge  
m2w64-gcc 5.3.0 6 conda-forge  
m2w64-gcc-ada 5.3.0 6 conda-forge  
m2w64-gcc-fortran 5.3.0 6 conda-forge  
m2w64-gcc-libgfortran 5.3.0 6 conda-forge  
m2w64-gcc-libs 5.3.0 7 conda-forge  
m2w64-gcc-libs-core 5.3.0 7 conda-forge  
m2w64-gcc-objc 5.3.0 6 conda-forge  
m2w64-gmp 6.1.0 2 conda-forge  
m2w64-headers-git 5.0.0.4636.c0ad18a 2 conda-forge  
m2w64-isl 0.16.1 2 conda-forge  
m2w64-libiconv 1.14 6 conda-forge  
m2w64-libmangle-git 5.0.0.4509.2e5a9a2 2 conda-forge  
m2w64-libwinpthread-git 5.0.0.4634.697f757 2 conda-forge  
m2w64-make 4.1.2351.a80a8b8 2 conda-forge  
m2w64-mpc 1.0.3 3 conda-forge  
m2w64-mpfr 3.1.4 4 conda-forge  
m2w64-pkg-config 0.29.1 2 conda-forge  
m2w64-toolchain 5.3.0 7 conda-forge  
m2w64-tools-git 5.0.0.4592.90b8472 2 conda-forge  
m2w64-windows-default-manifest 6.4 3 conda-forge  
m2w64-winpthreads-git 5.0.0.4634.697f757 2 conda-forge  
m2w64-zlib 1.2.8 10 conda-forge  
matplotlib 3.5.1 pypi\_0 pypi  
mkl 2021.4.0 h0e2418a\_729 conda-forge  
mkl-service 2.4.0 py38h4f8af0f\_0 conda-forge  
msys2-conda-epoch 20160418 1 conda-forge  
netcdf4 1.5.8 pypi\_0 pypi  
numba 0.55.1 py38h5858985\_0 conda-forge  
numpy 1.21.5 py38hcf66579\_0 conda-forge  
openssl 3.0.0 h8ffe710\_2 conda-forge  
packaging 21.3 pypi\_0 pypi  
pandas 1.4.0 pypi\_0 pypi  
pango 1.50.3 h6a11761\_0 conda-forge  
patsy 0.5.2 pypi\_0 pypi  
pcre 8.45 h0e60522\_0 conda-forge  
pillow 9.0.1 pypi\_0 pypi  
pip 22.0.3 pyhd8ed1ab\_0 conda-forge  
pixman 0.40.0 h8ffe710\_0 conda-forge  
pthread-stubs 0.4 hcd874cb\_1001 conda-forge  
pymc3 3.11.4 pypi\_0 pypi  
pyparsing 3.0.7 pypi\_0 pypi  
python 3.8.12 h900ac77\_2\_cpython conda-forge  
python-dateutil 2.8.2 pypi\_0 pypi  
python-graphviz 0.19.1 pyhaef67bd\_0 conda-forge  
python\_abi 3.8 2\_cp38 conda-forge  
pytz 2021.3 pypi\_0 pypi  
scipy 1.8.0 py38ha1292f7\_1 conda-forge  
semver 2.13.0 pypi\_0 pypi  
setuptools 60.8.1 py38haa244fe\_0 conda-forge  
six 1.16.0 pyh6c4a22f\_0 conda-forge  
sqlite 3.37.0 h8ffe710\_0 conda-forge  
tbb 2021.5.0 h2d74725\_0 conda-forge  
theano-pymc 1.1.2 pypi\_0 pypi  
typing-extensions 3.10.0.2 pypi\_0 pypi  
ucrt 10.0.20348.0 h57928b3\_0 conda-forge  
vc 14.2 hb210afc\_6 conda-forge  
vs2015\_runtime 14.29.30037 h902a5da\_6 conda-forge  
wheel 0.37.1 pyhd8ed1ab\_0 conda-forge  
xarray 0.21.1 pypi\_0 pypi  
xorg-kbproto 1.0.7 hcd874cb\_1002 conda-forge  
xorg-libice 1.0.10 hcd874cb\_0 conda-forge  
xorg-libsm 1.2.3 hcd874cb\_1000 conda-forge  
xorg-libx11 1.7.2 hcd874cb\_0 conda-forge  
xorg-libxau 1.0.9 hcd874cb\_0 conda-forge  
xorg-libxdmcp 1.1.3 hcd874cb\_0 conda-forge  
xorg-libxext 1.3.4 hcd874cb\_1 conda-forge  
xorg-libxpm 3.5.13 hcd874cb\_0 conda-forge  
xorg-libxt 1.2.1 hcd874cb\_2 conda-forge  
xorg-xextproto 7.3.0 hcd874cb\_1002 conda-forge  
xorg-xproto 7.0.31 hcd874cb\_1007 conda-forge  
xz 5.2.5 h62dcd97\_1 conda-forge  
zlib 1.2.11 h8ffe710\_1013 conda-forge  
zstd 1.5.2 h6255e5f\_0 conda-forge

when I run “g++ --version” I see:

g++ (Rev5, Built by MSYS2 project) 5.3.0  
Copyright (C) 2015 Free Software Foundation, Inc.  
This is free software; see the source for copying conditions. There is NO  
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

How can I upgrade it to the “gcc version 11.2.0”? any command?

User PATH:  
C:\Users\m\_esk\anaconda3\Library\mingw-w64\bin

System PATH:  
C:\Python39\Scripts\

---

<div class="post-metadata">

**Author:** ![Majid-Eskafi](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.pymc.io/majid-eskafi/32/4696_2.png) [@Majid-Eskafi](https://discourse.pymc.io/u/Majid-Eskafi)\
**Post date:** [February 10, 2022, 8:57am UTC](https://discourse.pymc.io/t/installation-of-g/8553/14 "2022-02-10T08:57:42Z")

</div>

I also followed this [Installation Guide](https://discourse.pymc.io/t/getting-a-working-pymc3-windows-10-installation-using-anaconda-an-installation-guide/8641)

However, I see I have more errors and warnings:  
Could not locate executable g77  
Could not locate executable f77  
Could not locate executable ifort  
Could not locate executable ifl  
Could not locate executable f90  
Could not locate executable DF  
Could not locate executable efl

Thread model: posix  
gcc version 5.3.0 (Rev5, Built by MSYS2 project)  
WARNING (aesara.tensor.blas): Using NumPy C-API based implementation for BLAS functions.  
Problem occurred during compilation with the command line below:  
“C:\Users\m\_esk\anaconda3\envs\pm3env\Library\mingw-w64\bin\g++.exe”

I think I am mixing up everything @sree_datta.

---

<div class="post-metadata">

**Author:** ![sree\_datta](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.pymc.io/sree_datta/32/4337_2.png) [@sree\_datta](https://discourse.pymc.io/u/sree_datta)\
**Post date:** [February 11, 2022, 5:36am UTC](https://discourse.pymc.io/t/installation-of-g/8553/15 "2022-02-11T05:36:53Z")

</div>

@Majid-Eskafi you need not upgrade to gcc 11.2.0. In one of the links I posted about setting up the ``libblas`settings using the`.theanorc.``` file (see my post in the above chain).

Let us meet as you suggested via Zoom. If I take you through the steps you should be good.

Sree

---

<div class="post-metadata">

**Author:** ![Majid-Eskafi](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.pymc.io/majid-eskafi/32/4696_2.png) [@Majid-Eskafi](https://discourse.pymc.io/u/Majid-Eskafi)\
**Post date:** [February 13, 2022, 12:56pm UTC](https://discourse.pymc.io/t/installation-of-g/8553/16 "2022-02-13T12:56:29Z")

</div>

I could find the solution and successfully install and run Pymc3 using these detailed [instructions](https://discourse.pymc.io/t/getting-a-working-pymc3-windows-10-installation-using-anaconda-an-installation-guide/8641) by @sree_datta.

---

<div class="post-metadata">

**Author:** ![sree\_datta](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.pymc.io/sree_datta/32/4337_2.png) [@sree\_datta](https://discourse.pymc.io/u/sree_datta)\
**Post date:** [February 14, 2022, 3:34am UTC](https://discourse.pymc.io/t/installation-of-g/8553/17 "2022-02-14T03:34:55Z")

</div>

Thanks for the feedback on the instructions @Majid-Eskafi - happy to know you can work with Pymc3 now