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#!/usr/bin/env python
import logging
import sys
import re
import os
import json
sys.path.append(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
from setup_support import SetupApp
PYTHON_DATA_SCRIPT = """
from distutils.sysconfig import (get_config_var, get_python_inc,
get_config_vars, PREFIX)
import json
result = {'config_vars': get_config_vars(),
'python_inc': get_python_inc(),
'python_inc_plat': get_python_inc(plat_specific=True),
'prefix': PREFIX}
print(json.dumps(result))
"""
def fetch_python_config(config):
logging.info('Fetch Python information...')
python_output = config.run(config.data['python_exec'], '-c',
PYTHON_DATA_SCRIPT,
grab=True)
python_data = json.loads(python_output)
config_vars = python_data['config_vars']
python_version = config_vars["VERSION"]
logging.info(' %-24s %s', 'Python version:', python_version)
# Current python location
current_prefix = python_data['prefix']
# Fetch prefix during the buid process. Some paths of interest might still
# reference a location used during the Python build process.
build_prefix = ([sys.prefix] +
re.findall(r"'--prefix=([^']+)'",
config_vars.get('CONFIG_ARGS', '')))[-1]
def relocate(path):
if os.path.isabs(path):
rel_path = os.path.relpath(path, build_prefix)
if not rel_path.startswith(os.pardir):
# The input path is relative to the original build directory
# replace build prefix by current one.
return os.path.join(current_prefix, rel_path)
else:
# The input path is not relative to original build directory
# thus return it unchanged.
return path
else:
# The input path is relative so assume it's relative to the current
# python prefix.
return os.path.join(current_prefix, path)
# Retrieve cflags, and linker flags
static_dir = relocate(config_vars.get('LIBPL', 'libs'))
logging.info(' %-24s %s', 'Static dir', static_dir)
shared_dir = relocate(config_vars.get('LIBDIR', '.'))
logging.info(' %-24s %s', 'Shared dir', shared_dir)
cflags = "-I" + relocate(python_data['python_inc'])
if python_data['python_inc'] != python_data['python_inc_plat']:
cflags += " -I" + relocate(python_data['python_inc_plat'])
logging.info(' %-24s %s', 'CFLAGS', cflags)
python_libs = [config_vars[v] for v in ("LIBS", "SYSLIBS", "MODLIBS")
if v in config_vars and config_vars[v]]
python_libs = " ".join(python_libs)
python_shared_libs = "-L%s -lpython%s %s" % (shared_dir,
python_version,
python_libs)
if os.path.isfile(
os.path.join(static_dir, 'libpython%s.a' % python_version)):
python_static_libs = '%s/libpython%s.a %s' % (static_dir,
python_version,
python_libs)
if sys.platform.startswith('linux'):
# On Linux platform, even when linking with the static libpython,
# symbols not used by the application itself should be exported so
# that shared library present in Python can use the Python C API.
python_static_libs += ' -export-dynamic'
python_shared_libs += ' -export-dynamic'
logging.info(' %-24s %s', 'Shared linker flags', python_shared_libs)
logging.info(' %-24s %s', 'Static linker flags', python_static_libs)
# User does not have the choice between linking with static libpython
# and shared libpython. If --enable-shared was passed then we should
# link with the shared libpython, otherwise with the static one.
# Indeed otherwise some C modules might not work as expected or even
# crash. On windows always link with shared version of libpython
# (if the static is present, this is just an indirection to the shared)
if '--enable-shared' in config_vars.get('CONFIG_ARGS', '') or \
sys.platform.startswith('win'):
logging.info('Force link to shared python library')
config.set_data('GNATCOLL_PYTHON_LIBS',
python_shared_libs, sub='gprbuild')
config.set_data('GNATCOLL_LIBPYTHON_KIND', 'shared',
sub='gprbuild')
else:
logging.info('Force link to static python library')
config.set_data('GNATCOLL_PYTHON_LIBS',
python_static_libs, sub='gprbuild')
config.set_data('GNATCOLL_LIBPYTHON_KIND', 'static',
sub='gprbuild')
config.set_data('GNATCOLL_PYTHON_CFLAGS', cflags, sub='gprbuild')
class GNATCollPython(SetupApp):
name = 'gnatcoll_python'
project = 'gnatcoll_python.gpr'
description = 'GNATColl Python bindings'
def create(self):
super(GNATCollPython, self).create()
self.build_cmd.add_argument(
'--disable-shared',
help='if set disable build of shared libraries',
dest='enable_shared',
default=True,
action="store_false")
self.build_cmd.add_argument(
'--python-exec',
help='set python executable location',
metavar='PATH',
default=sys.executable)
self.build_cmd.add_argument(
'--debug',
help='build project in debug mode',
action="store_true",
default=False)
def update_config(self, config, args):
# Fetch python information
config.set_data('python_exec', args.python_exec)
fetch_python_config(config)
# Compute list of library types to build
# The first element in library_types list define the default type of
# library that will be used. Do not rely on the default set in the
# project file.
if args.enable_shared:
config.set_data('library_types',
['static', 'static-pic', 'relocatable'])
else:
config.set_data('library_types',
['static'])
logging.info('%-26s %s',
'Libraries kind', ", ".join(config.data['library_types']))
# Set library version
with open(os.path.join(config.source_dir, '..',
'version_information'), 'rb') as fd:
version = fd.read().strip()
config.set_data('GNATCOLL_VERSION', version, sub='gprbuild')
logging.info('%-26s %s', 'Version', version)
# Set build mode
config.set_data('BUILD', 'DEBUG' if args.debug else 'PROD',
sub='gprbuild')
logging.info('%-26s %s', 'Build mode',
config.data['gprbuild']['BUILD'])
# Set GNATCOLL_OS
if 'darwin' in config.data['canonical_target']:
gnatcoll_os = 'osx'
elif 'windows' in config.data['canonical_target']:
gnatcoll_os = 'windows'
else:
# Assume this is an Unix system
gnatcoll_os = 'unix'
config.set_data('GNATCOLL_OS', gnatcoll_os, sub='gprbuild')
def variants(self, config, cmd):
result = []
for library_type in config.data['library_types']:
gpr_vars = {'LIBRARY_TYPE': library_type,
'XMLADA_BUILD': library_type,
'GPR_BUILD': library_type}
if cmd == 'install':
result.append((['--build-name=%s' % library_type,
'--build-var=LIBRARY_TYPE'],
gpr_vars))
else:
result.append(([], gpr_vars))
return result
if __name__ == '__main__':
app = GNATCollPython()
sys.exit(app.run())
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