CODEWITHSUNDEEP
pythonvirtualenv
user2459905
user2459905

Reputation:

gevent/libevent.h:9:19: fatal error: event.h: No such file or directory

I was trying to work on Pyladies website on my local folder. I cloned the repo, (https://github.com/pyladies/pyladies) ! and created the virtual environment. However when I do the pip install -r requirements, I am getting this error

Installing collected packages: gevent, greenlet
Running setup.py install for gevent
building 'gevent.core' extension
gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -I/opt/local/include -fPIC -I/usr/include/python2.7 -c gevent/core.c -o build/temp.linux-i686-2.7/gevent/core.o
In file included from gevent/core.c:253:0:
gevent/libevent.h:9:19: fatal error: event.h: No such file or directory
compilation terminated.
error: command 'gcc' failed with exit status 1
Complete output from command /home/akoppad/virt/pyladies/bin/python -c "import setuptools;__file__='/home/akoppad/virt/pyladies/build/gevent/setup.py';exec(compile(open(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --single-version-externally-managed --record /tmp/pip-4MSIGy-record/install-record.txt --install-headers /home/akoppad/virt/pyladies/include/site/python2.7:
running install

running build

running build_py

running build_ext

building 'gevent.core' extension

gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -I/opt/local/include -fPIC -I/usr/include/python2.7 -c gevent/core.c -o build/temp.linux-i686-2.7/gevent/core.o

In file included from gevent/core.c:253:0:

gevent/libevent.h:9:19: fatal error: event.h: No such file or directory

compilation terminated.

error: command 'gcc' failed with exit status 1

----------------------------------------
Command /home/akoppad/virt/pyladies/bin/python -c "import setuptools;__file__='/home/akoppad/virt/pyladies/build/gevent/setup.py';   exec(compile(open(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --single-version-externally-managed --record /tmp/pip-4MSIGy-record/install-record.txt --install-headers /home/akoppad/virt/pyladies/include/site/python2.7 failed with error code 1 in /home/akoppad/virt/pyladies/build/gevent
Storing complete log in /home/akoppad/.pip/pip.log.

I tried doing this, sudo port install libevent CFLAGS="-I /opt/local/include -L /opt/local/lib" pip install gevent

It says port command not found.

I am not sure how to proceed with this. Thanks!

Upvotes: 21

Views: 24132

Answers (5)

Rich Vogt
Rich Vogt

Reputation: 93

I ran into this error on MacOS 10.10.1 (Yosemite) running pip install. The solution for me was to add the path to libevent which pip was missing. These are C files, and CFLAGS and DFLAGS are bash environment variables that let pip know where to find these files. On my system, libevent is found at /usr/local/include/event2.

$ CFLAGS=-I/usr/local/include/event2 DFLAGS=-L/usr/local/lib pip install -r requires.txt

Upvotes: 1

Jason Zou
Jason Zou

Reputation: 11

yum install libevent-*

This command works for me because I am on centos.

Upvotes: 1

rosterloh
rosterloh

Reputation: 820

I had this issue while trying to 

pip install Flask-Sockets

and

sudo apt-get install libevent-dev

worked for me

Upvotes: 2

KhalilRavanna
KhalilRavanna

Reputation: 6058

I had the same problem and just as the other answer suggested I had to install "libevent". It's apparently not called "libevent-devel" anymore (apt-get couldn't find it) but doing: 

    $ apt-cache search libevent

listed a bunch of available packages. 

    $ apt-get install libevent-dev

worked for me.

Upvotes: 52

seanxiaoxiao
seanxiaoxiao

Reputation: 1302

I think you just forget to install the "libevent" in the environment. If you are on a OSX machine, please try to install brew here http://mxcl.github.io/homebrew/ and use brew install libevent to install the dependency. If you are on an ubuntu machine, you can try apt-get to install the corresponding library.

Upvotes: 11

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