如何在似乎没有gcc访问权限的virtualenv中安装psycopg2？

Question

I'm trying to install psycopg2 in a virtualenv but it seems that I don't have access to gcc.

Is there a way to activate gcc from inside the virtualenv? If not, is there any other library that works with PostgreSQL that does not use gcc?

My attempt to install psycopg2 at A2hosting.com gives me this error:

running install
running build
running build_py
creating build
creating build/lib.linux-x86_64-2.4
creating build/lib.linux-x86_64-2.4/psycopg2
copying lib/errorcodes.py -> build/lib.linux-x86_64-2.4/psycopg2
copying lib/__init__.py -> build/lib.linux-x86_64-2.4/psycopg2
copying lib/extensions.py -> build/lib.linux-x86_64-2.4/psycopg2
copying lib/pool.py -> build/lib.linux-x86_64-2.4/psycopg2
copying lib/tz.py -> build/lib.linux-x86_64-2.4/psycopg2
copying lib/psycopg1.py -> build/lib.linux-x86_64-2.4/psycopg2
copying lib/extras.py -> build/lib.linux-x86_64-2.4/psycopg2
creating build/lib.linux-x86_64-2.4/psycopg2/tests
copying tests/types_extras.py -> build/lib.linux-x86_64-2.4/psycopg2/tests
copying tests/types_basic.py -> build/lib.linux-x86_64-2.4/psycopg2/tests
copying tests/test_psycopg2_dbapi20.py -> build/lib.linux-x86_64-2.4/psycopg2/tests
copying tests/test_dates.py -> build/lib.linux-x86_64-2.4/psycopg2/tests
copying tests/bugX000.py -> build/lib.linux-x86_64-2.4/psycopg2/tests
copying tests/test_copy.py -> build/lib.linux-x86_64-2.4/psycopg2/tests
copying tests/test_async.py -> build/lib.linux-x86_64-2.4/psycopg2/tests
copying tests/test_notify.py -> build/lib.linux-x86_64-2.4/psycopg2/tests
copying tests/extras_dictcursor.py -> build/lib.linux-x86_64-2.4/psycopg2/tests
copying tests/test_lobject.py -> build/lib.linux-x86_64-2.4/psycopg2/tests
copying tests/test_connection.py -> build/lib.linux-x86_64-2.4/psycopg2/tests
copying tests/test_green.py -> build/lib.linux-x86_64-2.4/psycopg2/tests
copying tests/bug_gc.py -> build/lib.linux-x86_64-2.4/psycopg2/tests
copying tests/dbapi20_tpc.py -> build/lib.linux-x86_64-2.4/psycopg2/tests
copying tests/__init__.py -> build/lib.linux-x86_64-2.4/psycopg2/tests
copying tests/test_quote.py -> build/lib.linux-x86_64-2.4/psycopg2/tests
copying tests/testutils.py -> build/lib.linux-x86_64-2.4/psycopg2/tests
copying tests/dbapi20.py -> build/lib.linux-x86_64-2.4/psycopg2/tests
copying tests/test_cursor.py -> build/lib.linux-x86_64-2.4/psycopg2/tests
copying tests/test_cancel.py -> build/lib.linux-x86_64-2.4/psycopg2/tests
copying tests/test_transaction.py -> build/lib.linux-x86_64-2.4/psycopg2/tests
copying tests/testconfig.py -> build/lib.linux-x86_64-2.4/psycopg2/tests
running build_ext
building 'psycopg2._psycopg' extension
creating build/temp.linux-x86_64-2.4
creating build/temp.linux-x86_64-2.4/psycopg
gcc -pthread -fno-strict-aliasing -DNDEBUG -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic -D_GNU_SOURCE -fPIC -fPIC -DPSYCOPG_DEFAULT_PYDATETIME=1 -DPSYCOPG_VERSION="2.4 (dt dec pq3 ext)" -DPG_VERSION_HEX=0x080309 -DPSYCOPG_EXTENSIONS=1 -DPSYCOPG_NEW_BOOLEAN=1 -DHAVE_PQFREEMEM=1 -I/usr/include/python2.4 -I. -I/usr/include -I/usr/include/pgsql/server -c psycopg/psycopgmodule.c -o build/temp.linux-x86_64-2.4/psycopg/psycopgmodule.o -Wdeclaration-after-statement
unable to execute gcc: Permission denied
error: command 'gcc' failed with exit status 1

UPDATE:

I've discovered that the machine on which I'm trying to install psycopg2 doesn't have PostgreSQL. The webhosting company has PostgreSQL installed on another server. What can be done in a situation like this?

Answer 1

You don't need PostgreSQL, you need the PostgreSQL client libraries and development files. You can try asking the host to install them, or failing that you can build it on a similar platform and copy the package manually.