buildtools: Honor LDVERSION when looking for Python library

Since Python 3.2, Python .so files are tagged for ABI compatibility,
so the library name is something like libpython3.4m.so (note the 'm').
This information is found in distutils.sysconfig.get_config_var('LDVERSION')

This fixes waf issue 1405 (https://code.google.com/p/waf/issues/detail?id=1405)

Signed-off-by: Petr Viktorin <pviktori@redhat.com>
Reviewed-By: Jelmer Vernooij <jelmer@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>

diff --git a/third_party/waf/wafadmin/Tools/python.py b/third_party/waf/wafadmin/Tools/python.py
index cfc8495e91924626c29a9c5c5e2a8b3fe999107a..cd96b658185273ef211b2feb4f7039896cfc7688 100644 (file)
--- a/third_party/waf/wafadmin/Tools/python.py
+++ b/third_party/waf/wafadmin/Tools/python.py
@@ -170,10 +170,10 @@ def check_python_headers(conf, mandatory=True):
 
        try:
                # Get some python configuration variables using distutils
-               v = 'prefix SO SYSLIBS LDFLAGS SHLIBS LIBDIR LIBPL INCLUDEPY Py_ENABLE_SHARED MACOSX_DEPLOYMENT_TARGET'.split()
+               v = 'prefix SO SYSLIBS LDFLAGS SHLIBS LIBDIR LIBPL INCLUDEPY Py_ENABLE_SHARED MACOSX_DEPLOYMENT_TARGET LDVERSION'.split()
                (python_prefix, python_SO, python_SYSLIBS, python_LDFLAGS, python_SHLIBS,
                 python_LIBDIR, python_LIBPL, INCLUDEPY, Py_ENABLE_SHARED,
-                python_MACOSX_DEPLOYMENT_TARGET) = \
+                python_MACOSX_DEPLOYMENT_TARGET, python_LDVERSION) = \
                        _get_python_variables(python, ["get_config_var('%s') or ''" % x for x in v],
                                              ['from distutils.sysconfig import get_config_var'])
        except RuntimeError:
@@ -190,8 +190,10 @@ python_LIBPL = %r
 INCLUDEPY = %r
 Py_ENABLE_SHARED = %r
 MACOSX_DEPLOYMENT_TARGET = %r
+LDVERSION = %r
 """ % (python, python_prefix, python_SO, python_SYSLIBS, python_LDFLAGS, python_SHLIBS,
-       python_LIBDIR, python_LIBPL, INCLUDEPY, Py_ENABLE_SHARED, python_MACOSX_DEPLOYMENT_TARGET))
+       python_LIBDIR, python_LIBPL, INCLUDEPY, Py_ENABLE_SHARED, python_MACOSX_DEPLOYMENT_TARGET,
+       python_LDVERSION))
 
        # Allow some python overrides from env vars for cross-compiling
        os_env = dict(os.environ)
@@ -230,7 +232,9 @@ MACOSX_DEPLOYMENT_TARGET = %r
                parse_flags(python_LDFLAGS, 'PYEMBED', env)
 
        result = False
-       name = 'python' + env['PYTHON_VERSION']
+       if not python_LDVERSION:
+               python_LDVERSION = env['PYTHON_VERSION']
+       name = 'python' + python_LDVERSION
 
        if python_LIBDIR is not None:
                path = [python_LIBDIR]
@@ -245,7 +249,7 @@ MACOSX_DEPLOYMENT_TARGET = %r
        if not result:
                conf.log.write("\n\n# try again with -L$prefix/libs, and pythonXY name rather than pythonX.Y (win32)\n")
                path = [os.path.join(python_prefix, "libs")]
-               name = 'python' + env['PYTHON_VERSION'].replace('.', '')
+               name = 'python' + python_LDVERSION.replace('.', '')
                result = conf.check(lib=name, uselib='PYEMBED', libpath=path)
 
        if result: