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setup.py
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setup.py
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# Copyright 2015 Google Inc. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from __future__ import print_function
import errno
import os
import subprocess
from io import open
from setuptools import Extension
from setuptools import setup
from setuptools.command.build_ext import build_ext
DIR = os.path.abspath(os.path.dirname(__file__))
def to_c_array(in_file, out_file):
"""
Python port of stdlib/to_c_array.cpp
"""
first_character = True
with open(out_file, 'wb') as out:
with open(in_file, 'rb') as i:
while True:
ba = i.read(1)
if not ba:
break
b = ba[0]
if not isinstance(b, int):
b = ord(b)
if first_character:
first_character = False;
else:
out.write(b',')
out.write(str(b).encode())
out.write(b",0")
def get_version():
"""
Parses the version out of libjsonnet.h
"""
with open(os.path.join(DIR, 'include/libjsonnet.h')) as f:
for line in f:
if '#define' in line and 'LIB_JSONNET_VERSION' in line:
v_code = line.partition('LIB_JSONNET_VERSION')[2].strip('\n "')
if v_code[0] == "v":
v_code = v_code[1:]
return v_code
def get_cpp_extra_compile_args(compiler):
"""
Get the extra compile arguments for libjsonnet C++ compilation.
"""
if compiler.compiler_type == 'msvc':
return []
else:
return ["-Wextra", "-Woverloaded-virtual", "-pedantic", "-std=c++11"]
def get_c_extra_compile_args(compiler):
"""
Get the extra compile arguments for python jsonnet C compilation.
"""
if compiler.compiler_type == 'msvc':
return []
else:
return ["-Wextra", "-pedantic", "-std=c99"]
def is_cmake_available():
try:
returncode = subprocess.call(["cmake", "--version"], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
return returncode == 0
except OSError as e:
if e.errno == errno.ENOENT:
return False
raise
def is_make_available():
try:
returncode = subprocess.call(["make", "--version"], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
return returncode == 0
except OSError as e:
if e.errno == errno.ENOENT:
return False
raise
class custom_build_ext(build_ext):
def build_extension(self, ext):
if ext.name == '_jsonnet':
libjsonnet_built = False
if not libjsonnet_built:
if is_cmake_available():
print("CMake is available.")
print("Building libjsonnet with CMake ...")
subprocess.call(['cmake', '.', '-Bbuild'], cwd=DIR)
returncode = subprocess.call(['cmake', '--build', 'build', '--target', 'libjsonnet_static'],
cwd=DIR)
ext.extra_objects = ['build/core/CMakeFiles/libjsonnet_static.dir/desugarer.cpp.o',
'build/core/CMakeFiles/libjsonnet_static.dir/formatter.cpp.o',
'build/core/CMakeFiles/libjsonnet_static.dir/libjsonnet.cpp.o',
'build/core/CMakeFiles/libjsonnet_static.dir/lexer.cpp.o',
'build/core/CMakeFiles/libjsonnet_static.dir/parser.cpp.o',
'build/core/CMakeFiles/libjsonnet_static.dir/pass.cpp.o',
'build/core/CMakeFiles/libjsonnet_static.dir/static_analysis.cpp.o',
'build/core/CMakeFiles/libjsonnet_static.dir/string_utils.cpp.o',
'build/core/CMakeFiles/libjsonnet_static.dir/vm.cpp.o',
'build/third_party/md5/CMakeFiles/md5.dir/md5.cpp.o']
if returncode == 0:
libjsonnet_built = True
else:
print("libjsonnet build has failed using CMake. Falling back to another build method ...")
else:
print("CMake is not available.")
if not libjsonnet_built:
if is_make_available():
print("make is available.")
print("Building libjsonnet with make ...")
ext.extra_objects = [
'core/desugarer.o',
'core/formatter.o',
'core/libjsonnet.o',
'core/lexer.o',
'core/parser.o',
'core/pass.o',
'core/static_analysis.o',
'core/string_utils.o',
'core/vm.o',
'third_party/md5/md5.o']
returncode = subprocess.call(['make'] + ext.extra_objects, cwd=DIR)
if returncode == 0:
libjsonnet_built = True
else:
print("libjsonnet build has failed using make. Falling back to another build method ...")
else:
print("make is not available")
if not libjsonnet_built:
print("Building libjsonnet with distutils compiler ...")
try:
to_c_array(os.path.join(DIR, 'stdlib/std.jsonnet'), os.path.join(DIR, 'core/std.jsonnet.h'))
ext.extra_objects = self.compiler.compile([
'core/desugarer.cpp',
'core/formatter.cpp',
'core/libjsonnet.cpp',
'core/lexer.cpp',
'core/parser.cpp',
'core/pass.cpp',
'core/static_analysis.cpp',
'core/string_utils.cpp',
'core/vm.cpp',
'third_party/md5/md5.cpp'],
extra_postargs=get_cpp_extra_compile_args(self.compiler),
include_dirs=['include', 'third_party/md5', 'third_party/json'])
libjsonnet_built = True
except Exception as e:
print(e)
print("libjsonnet build has failed using distutils compiler.")
raise Exception("Could not build libjsonnet")
ext.extra_compile_args = get_c_extra_compile_args(self.compiler)
build_ext.build_extension(self, ext)
jsonnet_ext = Extension(
'_jsonnet',
sources=['python/_jsonnet.c'],
include_dirs=['include', 'third_party/md5', 'third_party/json'],
language='c++'
)
setup(name='jsonnet',
url='https://jsonnet.org',
description='Python bindings for Jsonnet - The data templating language ',
author='David Cunningham',
author_email='dcunnin@google.com',
version=get_version(),
cmdclass={
'build_ext': custom_build_ext,
},
ext_modules=[jsonnet_ext],
test_suite="python._jsonnet_test",
)