#127 ✓ resolved
Psycopg website

psycopg2 extension fails to compile with clang

Reported by Psycopg website | September 19th, 2012 @ 03:57 PM

Submitted by: Bradley Saulteaux

building 'psycopg2._psycopg' extension

clang -march=corei7-avx -O3 -ffast-math -fPIC -Wimplicit -DPSYCOPG_DEFAULT_PYDATETIME=1 -DPSYCOPG_VERSION="2.4.5 (dt dec pq3 ext)" -DPG_VERSION_HEX=0x090200 -DPSYCOPG_EXTENSIONS=1 -DPSYCOPG_NEW_BOOLEAN=1 -DHAVE_PQFREEMEM=1 -I/usr/local/include/pypy1.9 -I. -I/usr/local/include -I/usr/local/include/postgresql/server -c psycopg/psycopgmodule.c -o build/temp.freebsd-9.0-RELEASE-amd64-2.7/psycopg/psycopgmodule.o

In file included from psycopg/psycopgmodule.c:27:

In file included from ./psycopg/psycopg.h:33:

./psycopg/config.h:146:15: error: static declaration of 'round' follows non-static declaration

static double round(double num)


/usr/include/math.h:273:8: note: previous declaration is here

double round(double);


psycopg/psycopgmodule.c:544:37: warning: incompatible pointer types passing 'PyTypeObject ' (aka 'struct _typeobject ') to parameter of type 'PyObject ' (aka 'struct _object ') [-Wincompatible-pointer-types]

if (!(descr = PyDescr_NewMethod((PyTypeObject *)Error,


/usr/local/include/pypy1.9/pypy_decl.h:70:52: note: passing argument to parameter 'arg0' here

PyAPI_FUNC(PyObject ) PyDescr_NewMethod(PyObject arg0, PyMethodDef *arg1);


1 warning and 1 error generated.

error: command 'clang' failed with exit status 1

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Psycopg is the most used PostgreSQL adapter for the Python programming language. At the core it fully implements the Python DB API 2.0 specifications. Several extensions allow access to many of the features offered by PostgreSQL.

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