rcssmin and rjsmin do not install

[bobort]

I am installing django-compressor on Windows 10 x64 with Python 3.4 x64. I get the following error when I install it with pip. Interestingly enough, I did not get such an error with Python 3.5 x64.

>  pip install django-compressor --upgrade
Collecting django-compressor
  Using cached django_compressor-2.1-py2.py3-none-any.whl
Collecting rjsmin==1.0.12 (from django-compressor)
  Using cached rjsmin-1.0.12.tar.gz
Collecting rcssmin==1.0.6 (from django-compressor)
  Using cached rcssmin-1.0.6.tar.gz
Requirement already up-to-date: django-appconf>=1.0 in d:\env3\lib\site-packages (from django-compressor)
Building wheels for collected packages: rjsmin, rcssmin
  Running setup.py bdist_wheel for rjsmin ... error
  Complete output from command d:\env\scripts\python.exe -u -c "import setuptools, tokenize;__file__='\\Temp\\pip-build-um3ph8qp\\rjsmin\\setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" bdist_wheel -d \Temp\tmp6dj8tx90pip-wheel- --python-tag cp34:
  running bdist_wheel
  running build
  running build_py
  creating build
  creating build\lib.win-amd64-3.4
  copying .\rjsmin.py -> build\lib.win-amd64-3.4
  running build_ext
  building '_rjsmin' extension
  error: Microsoft Visual C++ 10.0 is required. Get it with "Microsoft Windows SDK 7.1": www.microsoft.com/download/details.aspx?id=8279

  ----------------------------------------
  Failed building wheel for rjsmin
  Running setup.py clean for rjsmin
  Running setup.py bdist_wheel for rcssmin ... error
  Complete output from command d:\env3\scriptspython.exe -u -c "import setuptools, tokenize;__file__='\\Temp\\pip-build-um3ph8qp\\rcssmin\\setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" bdist_wheel -d \Temp\tmp_cfj9vrjpip-wheel- --python-tag cp34:
  running bdist_wheel
  running build
  running build_py
  creating build
  creating build\lib.win-amd64-3.4
  copying .\rcssmin.py -> build\lib.win-amd64-3.4
  running build_ext
  building '_rcssmin' extension
  error: Microsoft Visual C++ 10.0 is required. Get it with "Microsoft Windows SDK 7.1": www.microsoft.com/download/details.aspx?id=8279

  ----------------------------------------
  Failed building wheel for rcssmin
  Running setup.py clean for rcssmin
Failed to build rjsmin rcssmin
Installing collected packages: rjsmin, rcssmin, django-compressor
  Running setup.py install for rjsmin ... error
    Complete output from command d:\env3\scripts\python.exe -u -c "import setuptools, tokenize;__file__='\\Temp\\pip-build-um3ph8qp\\rjsmin\\setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record \Temp\pip-_z23ysr6-record\install-record.txt --single-version-externally-managed --compile --install-headers d:\env3\include\site\python3.4\rjsmin:
    running install
    running build
    running build_py
    creating build
    creating build\lib.win-amd64-3.4
    copying .\rjsmin.py -> build\lib.win-amd64-3.4
    running build_ext
    building '_rjsmin' extension
    error: Microsoft Visual C++ 10.0 is required. Get it with "Microsoft Windows SDK 7.1": www.microsoft.com/download/details.aspx?id=8279

    ----------------------------------------
Command "d:\env3\scripts\python.exe -u -c "import setuptools, tokenize;__file__='\\Temp\\pip-build-um3ph8qp\\rjsmin\\setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record \Temp\pip-_z23ysr6-record\install-record.txt --single-version-externally-managed --compile --install-headers d:\env3\include\site\python3.4\rjsmin" failed with error code 1 in \Temp\pip-build-um3ph8qp\rjsmin\

[bobort]

I was able to get it to install by doing this first:

pip install rcssmin --install-option="--without-c-extensions"
pip install rjsmin --install-option="--without-c-extensions"
pip install django-compressor --upgrade

As mentioned in comments below, in Ubuntu, you need to install python3-dev. If you are using the deadsnakes repository, you can use, i.e. sudo apt-get install python3.9-dev.

[karyon]

that sounds about right. they have some c code they try to compile, but there was no compiler installed on your system. they could provide a better error message, see here: ndparker/rcssmin#4

we could theoretically make rcssmin and rjsmin non-mandatory (also discussed here #803), but i think it's nice to have some installed by default. if you think otherwise, you can open a ticket for that if you want.

[arita37]

Was very useful.

[okjodom]

Same issue trying to install in linux mint 18.

_setup/include/cext.h:34:20: fatal error: Python.h: No such file or directory
    compilation terminated.
    error: command 'x86_64-linux-gnu-gcc' failed with exit status 1

@karyon how does installing without the c extensions affect the functionality?

[karyon]

@JoDoM rcssmin's readme says rcssmin.c is a reimplementation of rcssmin.py in C and improves runtime up to factor 100 or so, so i guess the features are the same, but it works much slower without the c extensions.

[okjodom]

oh great, I've managed to install it following your tip above. Should I have any issues then ill try to reinstall it with the c extensions. This is considering that previously I had it installing just fine in a different mint 18 VM

[demeralde]

Installing python3.6-dev fixed it for me. I'm using Python 3.6, so substitute the version number with whatever version of Python you're using.

[saczuac]

The real solution is installing python3-dev package. After sudo apt-get install python3-dev i was able to get it. Cheers

[factorlive]

Thanks, MacOS High Sierra excl. Xcode spam and with miniconda & python3.6 showed the same error.

[Qoyyuum]

I have tried the following and it works:

pip install rcssmin --install-option="--without-c-extensions"
pip install rjsmin --install-option="--without-c-extensions"

[k-funk]

For me, I was missing xcode command line tools on 10.13 (thought it was installed, but guess not). I was able to fix the OP's issue that I also had by running xcode-select --install

[aquarii11]

I was able to get it to install by doing this first:

pip install rcssmin --install-option="--without-c-extensions"
pip install rjsmin --install-option="--without-c-extensions"
pip install django-compressor --upgrade

I was able to get it to install by doing this first:

pip install rcssmin --install-option="--without-c-extensions"
pip install rjsmin --install-option="--without-c-extensions"
pip install django-compressor --upgrade

[aquarii11]

Super bob...

[Fabricourt]

Hurray it worked ....thanks

[coler-j]

rjsmin the install-option="--without-c-extensions" is no longer required.

It looks like the install option for rjsmin may have been removed in the new 1.1.0 release released March 6th 2019.

Closed issue on rjsmin repo: ndparker/rjsmin#15

[karyon]

see #930

[brmley]

I have tried the following and it works:

pip install rcssmin --install-option="--without-c-extensions"
pip install rjsmin --install-option="--without-c-extensions"

New rjsmin doesn't work with that option at the moment
error:
error: option --without-c-extensions not recognized
If you have that problem you can set the version:
pip install rjsmin==1.0.12 --install-option="--without-c-extensions"

[karyon]

@brmley as stated above, you should be able to simply leave out that option now, no need to install an older version.

[octavioamu]

Last commands working for me:

pip install rcssmin --install-option="--without-c-extensions"
pip install rjsmin 
pip install django-compressor --upgrade

[uhurusurfa]

apt-get install python3.7-dev - seems to be a dependency on this library and solved my issue

[devbtc]

facing an error on windows machine. implemented same thing there. but still not working

[vtmh]

Why not just install build-essential package so gcc is in the container or system you need it in? This is what I did to fix this as the error states it is a compilation issue.

apt install build-essential -y

[bobort]

@vtmh Because we're using Windows...