Installation error on MacOS

[pengup]

I have a similar issue that installation on MacOS Catalalina (10.15.6) failed

pip install bjoern
Collecting bjoern
  Using cached https://files.pythonhosted.org/packages/8f/d9/729bed4f535574bd2ca7d541e88f94f5ae678c341f4df153a70a3ff3a695/bjoern-3.1.0.tar.gz
Building wheels for collected packages: bjoern
  Building wheel for bjoern (setup.py) ... error
  ERROR: Command errored out with exit status 1:
   command: /Users/pzhang/.pyenv/versions/3.7.0/bin/python3.7 -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/private/var/folders/kd/x6sh2lmd0p934wbcrmpqbm749qmv60/T/pip-install-j98ldxcq/bjoern/setup.py'"'"'; __file__='"'"'/private/var/folders/kd/x6sh2lmd0p934wbcrmpqbm749qmv60/T/pip-install-j98ldxcq/bjoern/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' bdist_wheel -d /private/var/folders/kd/x6sh2lmd0p934wbcrmpqbm749qmv60/T/pip-wheel-msvaovvh --python-tag cp37
       cwd: /private/var/folders/kd/x6sh2lmd0p934wbcrmpqbm749qmv60/T/pip-install-j98ldxcq/bjoern/
  Complete output (20 lines):
  running bdist_wheel
  running build
  running build_py
  creating build
  creating build/lib.macosx-10.14-x86_64-3.7
  copying bjoern.py -> build/lib.macosx-10.14-x86_64-3.7
  running build_ext
  building '_bjoern' extension
  creating build/temp.macosx-10.14-x86_64-3.7
  creating build/temp.macosx-10.14-x86_64-3.7/http-parser
  creating build/temp.macosx-10.14-x86_64-3.7/bjoern
  clang -Wno-unused-result -Wsign-compare -Wunreachable-code -DNDEBUG -g -fwrapv -O3 -Wall -I/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.14.sdk/usr/include -I/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.14.sdk/usr/include -DSIGNAL_CHECK_INTERVAL=0.1 -DWANT_SIGNAL_HANDLING=yes -DWANT_SIGINT_HANDLING=yes -Ihttp-parser -Istatsd-c-client -I/usr/include/libev -I/opt/local/include -I/Users/pzhang/.pyenv/versions/3.7.0/include/python3.7m -c http-parser/http_parser.c -o build/temp.macosx-10.14-x86_64-3.7/http-parser/http_parser.o -std=c99 -fno-strict-aliasing -fcommon -fPIC -Wall -Wextra -Wno-unused-parameter -Wno-missing-field-initializers -g
  clang -Wno-unused-result -Wsign-compare -Wunreachable-code -DNDEBUG -g -fwrapv -O3 -Wall -I/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.14.sdk/usr/include -I/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.14.sdk/usr/include -DSIGNAL_CHECK_INTERVAL=0.1 -DWANT_SIGNAL_HANDLING=yes -DWANT_SIGINT_HANDLING=yes -Ihttp-parser -Istatsd-c-client -I/usr/include/libev -I/opt/local/include -I/Users/pzhang/.pyenv/versions/3.7.0/include/python3.7m -c bjoern/_bjoernmodule.c -o build/temp.macosx-10.14-x86_64-3.7/bjoern/_bjoernmodule.o -std=c99 -fno-strict-aliasing -fcommon -fPIC -Wall -Wextra -Wno-unused-parameter -Wno-missing-field-initializers -g
  In file included from bjoern/_bjoernmodule.c:3:
  In file included from bjoern/wsgi.h:2:
  bjoern/request.h:4:10: fatal error: 'ev.h' file not found
  #include <ev.h>
           ^~~~~~
  1 error generated.
  error: command 'clang' failed with exit status 1
  ----------------------------------------
  ERROR: Failed building wheel for bjoern

I am using homebrew, and already installed libev (brew install libev).
I also tried pip install --global-option=build_ext --global-option="-I/usr/local/include/" --global-option="-L/usr/local/lib" bjoern but same error. Anyone has any hint? Thanks!

[onekiloparsec]

You must provide paths pointing to the faulting ev.h. Here is a working installation command:

pip install --global-option=build_ext --global-option="-I/usr/local/Cellar/libev/4.33/include" --global-option="-L/usr/local/Cellar/libev/4.33/lib" bjoern

However, bjoern should have a wheel published to ease installation, at some point. See (old) #121 ...

[onekiloparsec]

Actually, there is a well advanced PR #178 on this subject, that's great. Should be fixed soon.

[pengup]

@onekiloparsec Thank you very much! The solution works, only thing is that my local homebrew is in /usr/local/homebrew, after pointing to the right directory, installation just worked fine. Here is the command if anyone needs it too

pip install --global-option=build_ext --global-option="-I/usr/local/homebrew/Cellar/libev/4.33/include" --global-option="-L/usr/local/homebrew/Cellar/libev/4.33/lib" bjoern