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More portable way to establish Python 32/64 build

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This commit is contained in:
Daniele Varrazzo 2015-02-08 22:52:50 +00:00
parent 569fd0975b
commit 6d63973e08
1 changed files with 8 additions and 1 deletions
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9
setup.py
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@ -420,7 +420,7 @@ class psycopg_build_ext(build_ext):
(pgmajor, pgminor, pgpatch)))
# enable lo64 if libpq >= 9.3 and Python 64 bits
if (pgmajor, pgminor) >= (9, 3) and sys.maxint > (1 << 32):
if (pgmajor, pgminor) >= (9, 3) and is_py_64():
define_macros.append(("HAVE_LO64", "1"))
# Inject the flag in the version string already packed up
@ -441,6 +441,13 @@ class psycopg_build_ext(build_ext):
if hasattr(self, "finalize_" + sys.platform):
getattr(self, "finalize_" + sys.platform)()
def is_py_64():
# sys.maxint not available since Py 3.1;
# sys.maxsize not available before Py 2.6;
# this is portable at least between Py 2.4 and 3.4.
import struct
return struct.calcsize("P") > 4
# let's start with macro definitions (the ones not already in setup.cfg)
define_macros = []