Can't install psycopg2 with pip in virtualenv on Mac OS X 10.7
I am following Heroku's tutorial to deploy a Django app: http://devcenter.heroku.com/articles/django#prerequisites.
Everything is working fine until I get to this part:
$ pip install Django psycopg2
I can install Django by itself, but the probelm is with psycopg2.
I keep getting this error:
ld: library not found for -lpq
collect2: ld returned 1 exit status
ld: library not found for -lpq
collect2: ld returned 1 exit status
lipo: can't open input file: /var/folders/_4/p6l0y0t51hd4xbq7llbyshmw0000gn/T//cc0L10mI.out (No such file or directory)
error: command 'gcc-4.2' failed with exit status 1
I've installed PostgreSQL 9.1 on my machine.
Also, in the output, there are bunch of lines like this:
gcc-4.2 -fno-strict-aliasing -fno-common -dynamic -isysroot /Developer/SDKs/MacOSX10.6.sdk -arch i386 -arch x86_64 -g -O2 -DNDEBUG -g -O3 -DPSYCOPG_DEFAULT_PYDATETIME=1 -DPSYCOPG_VERSION="2.4.4 (dt dec pq3 ext)" -DPG_VERSION_HEX=0x090004 -DPSYCOPG_EXTENSIONS=1 -DPSYCOPG_NEW_BOOLEAN=1 -DHAVE_PQFREEMEM=1 -I/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7 -I. -I/usr/include -I/usr/include/postgresql/server -c psycopg/typecast.c -o build/temp.macosx-10.6-intel-2.7/psycopg/typecast.o
I'm not really sure what it means, but I do notice that it has "macosx-10.6" in it so I'm wondering if that could be the issue? I'm on 10.7.
Thanks in advance for your help.
Answer
Just would like to share. The following code worked for me:
env LDFLAGS='-L/usr/local/lib -L/usr/local/opt/openssl/lib
-L/usr/local/opt/readline/lib' pip install psycopg2==2.5.2
I am using macOS Sierra and psql 9.6.1.
I got the lib path from the pg_config command.