Microsoft Windows Python-3.6 PyCrypto installation error

Question

pip install pycrypto works fine with python3.5.2 but fails with python3.6 with the following error:

inttypes.h(26): error C2061: syntax error: identifier 'intmax_t'

user1602 · Accepted Answer · 2019-03-13T12:44:40.793

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The file include\pyport.h in Python installation directory does not have #include < stdint.h > anymore. This leaves intmax_t undefined.

A workaround for Microsoft VC compiler is to force include stdint.h via OS environment variable CL:

Open command prompt
Setup VC environment by runing vcvars*.bat (choose file name depending on VC version and architecture)
set CL=-FI"Full-Path\stdint.h" (use real value for Full-Path for the environment)
pip install pycrypto

edited Mar 13 '19 at 12:44

answered Jan 25 '17 at 04:19

user1602

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Has this been patched into Windows Python? – CMCDragonkai Feb 15 '17 at 09:45
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Why hasn't this been patched into Windows Python distribution? For the record, I was able to use vcvarsall.bat `C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\vcvarsall.bat`. – CMCDragonkai Feb 15 '17 at 09:53
Has this been reported on the Python bug tracker? If so, can someone provide the reference? If not, maybe someone could do so. – Paul Moore Mar 19 '17 at 23:01
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The issue was reported at https://github.com/dlitz/pycrypto/issues/221. The problem is with pycrypto itself, which supplies an incomplete ```stdint.h```, and I've added an explanation of the fix required to that bug report. – Paul Moore Mar 20 '17 at 14:39
Admin privileges are needed in case Python environment is in a protected/shared location – user1602 Jul 19 '17 at 01:43
I did not need admin privileges on Windows 7 with UAC. – Quolonel Questions Sep 09 '17 at 17:39
Try windows 10 and pip, not setup.py – user1602 Sep 10 '17 at 00:28
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For me, steps 1+2 could be shortened to: **From Start menu, run "Visual C++ 2015 x86 Native Build Tools Command Prompt"** – akavel Dec 08 '17 at 00:34
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also if you build it with **VS 2017**, the header location should be modified as follows: **set CL=-FI"%VCINSTALLDIR%\Tools\MSVC\14.16.27023\include\stdint.h** - of course _14.16.27023_ number depends on VS version, mine is 15.9. – Kasia Gauza Jan 14 '19 at 23:46
As of today, the best advice is to switch to pycryptodome. See bhuvan karuturi's answer – robertspierre Apr 10 '19 at 21:22
This worked for me in Windows 10 with Visual Studio 2019 (aka Visual Studio 14) using `set CL=-FI"%VCINSTALLDIR%\include\stdint.h"` – Stefan Mar 13 '20 at 18:45

score 33 · Answer 2 · edited Sep 30 '20 at 16:50

33

I've succeeded install pycrypto 2.6.1 on python 3.6, Windows 10, Visual Studio 2017.

Open "x86_x64 Cross-Tools Command Prompt for VS 2017" with administrator privilege in start menu.
set CL=-FI"%VCINSTALLDIR%Tools\MSVC\14.11.25503\include\stdint.h"
pip install pycrypto

edited Sep 30 '20 at 16:50

Jossef Harush

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answered Oct 24 '17 at 23:22

Marko Rothstein

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Finally working solution!! Just make sure to check the actual version of MSVC folder, I had `14.12.25827`. Thanks mate – pagep Jan 09 '18 at 22:49
Thanks @Marko :-) For me these 3 command worked. 1. C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Auxiliary\Build>vcvarsx86_amd64.bat 2. set CL=-FI"%VCINSTALLDIR%Tools\MSVC\14.16.27023\include\stdint.h" 3. pip install pycrypto==2.6.1 – dinu0101 Oct 04 '19 at 14:48
I'm thinking in Donate PayPal Button to this guy – Roberth Solís Oct 29 '20 at 23:20

naaman · Answer 3 · 2017-12-11T09:55:48.023

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Thanks to user1960422's answer.
PowerShell steps for pycrypto 2.6.1 (via simple-crypt) / Python 3.6 / Windows 10:

$env:VCINSTALLDIR="C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC"
$env:CL="-FI`"$env:VCINSTALLDIR\INCLUDE\stdint.h`""

Successful simple-crypt / pycrypto install

I also needed to follow the answer in: https://stackoverflow.com/a/24822876/8751739 to fix a winrandom module error.

edited Dec 11 '17 at 09:55

answered Dec 11 '17 at 09:16

naaman

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That helped in PowerShell, but also I needed [Visual Studio can't build due to rc.exe](https://stackoverflow.com/questions/14372706/visual-studio-cant-build-due-to-rc-exe) for the linking to succeed. – Jari Turkia Feb 22 '18 at 15:33
visual studio 2017 build tools and in my case the VCINSTALLDIR is at VC\Tools\MSVC\14.16.27023 – Doogle Dec 18 '18 at 12:09

score 13 · Answer 4 · edited Apr 11 '19 at 05:02

13

Use PyCryptodome instead of pycrypto. pycrypto is discontinued and is no longer actively supported. PyCryptodome exposes almost the same API as pycrypto (source).

edited Apr 11 '19 at 05:02

robertspierre

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answered Nov 17 '17 at 15:46

bhuvan karuturi

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This question is about compilation problem and what to use instead – user1602 Dec 20 '20 at 03:03

score 6 · Answer 5 · answered Jul 14 '17 at 05:18

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I've succeeded install pycrypo 2.6.1 on python 3.6 and windows 10.

Set an environment variable like below.
Open cmd.exe
Activate virtualenv
Download pycrypto 2.6.1 release from github and unzip it.
set an environment variable for pycrypto set CL=/FI"%VCINSTALLDIR%\\INCLUDE\\stdint.h" %CL%
Run setup command python setup.py install
my result is here

I would be glad if this could be help someone.

answered Jul 14 '17 at 05:18

user1960422

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How is it different from the original answer? – user1602 Jul 15 '17 at 06:11
@user1602 you don't have to do the following steps in original answer --- 1. Open command prompt with admin privileges 2. Run vsvars32.bat from your version of VC – user1960422 Jul 16 '17 at 06:14
In your case you set VCINSTALLDIR manually, where I do it via vsvars32.bat. In the end you are suggesting the same solution. – user1602 Jul 19 '17 at 01:46

score 1 · Answer 6 · edited Dec 17 '20 at 14:07

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Uninstall your current Python version
Install Python for amd64 architecture
Follow the other accepted solutions:
- open "x86_x64 Cross-Tools Command Prompt for VS 2017"
- Add the new enviroment varible for your Visual Studio MSVC install path
- set CL=-FI"%VCINSTALLDIR%Tools\MSVC\14.11.25503\include\stdint.h"
- pip install pycrypto

edited Dec 17 '20 at 14:07

Cool Cloud

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answered Feb 22 '20 at 14:59

Sebastian Duran

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score 1 · Answer 7 · answered Sep 25 '20 at 02:47

For ppl who is encountering same situation as mine:

Env

Windows 10 Enterprise v10.0.18363 Build 18363
Python 3.8

Steps

Download Microsoft C++ Build Tools at https://visualstudio.microsoft.com/visual-cpp-build-tools/
Run above setup exe and install default components
- MSVC v142 - VS 2019 C++ x64/x86 build tools
- Windows 10 SDK
- C++ CMake tools for windows
- Testing tools core features - Build Tools
- C++ AddressSanitizer(Experimental)
Reboot PC
Start menu > x64 Native Tools Command Prompt for VS 2019, a cmd window will pop up
Execute set CL=-FI"C:\Program Files (x86)\Microsoft Visual Studio\2019\BuildTools\VC\Tools\MSVC\14.27.29110\include\stdint.h"
Run pip install pycrypto in a cmd window(may need admin privilege) 1

score 0 · Answer 8 · answered Apr 17 '20 at 07:22

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For me this fixes it:

with Python 2, I have

sudo apt-get install python-dev  \
     build-essential libssl-dev libffi-dev \
     libxml2-dev libxslt1-dev zlib1g-dev \
     ...

with Python 3, I need

sudo apt-get install python3 python-dev python3-dev \
     build-essential libssl-dev libffi-dev \
     ...

Installing python-dev python3-dev fixes it for me!

answered Apr 17 '20 at 07:22

Jee Mok

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This is Windows platform issue, not Ubuntu. Your answer is irrelevant here. – user1602 Apr 17 '20 at 08:06

Microsoft Windows Python-3.6 PyCrypto installation error

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