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#

# Copyright (c) 2016 Stefan Seefeld

# All rights reserved.

#

# Distributed under the Boost Software License, Version 1.0.

# (See accompanying file LICENSE_1_0.txt or copy at

# http://www.boost.org/LICENSE_1_0.txt)

# Based on SCons/Tool/gcc.py

import os

import re

import subprocess

import SCons.Util

import SCons.Tool.cc

compilers = ['clang']

def generate(env):

"""Add Builders and construction variables for clang to an Environment."""

SCons.Tool.cc.generate(env)

env['CC'] = env.Detect(compilers) or 'clang'

if env['PLATFORM'] in ['cygwin', 'win32']:

env['SHCCFLAGS'] = SCons.Util.CLVar('$CCFLAGS')

else:

env['SHCCFLAGS'] = SCons.Util.CLVar('$CCFLAGS -fPIC')

# determine compiler version

if env['CC']:

#pipe = SCons.Action._subproc(env, [env['CC'], '-dumpversion'],

pipe = SCons.Action._subproc(env, [env['CC'], '--version'],

stdin = 'devnull',

stderr = 'devnull',

stdout = subprocess.PIPE)

if pipe.wait() != 0: return

# clang -dumpversion is of no use

line = pipe.stdout.readline()

match = re.search(r'clang +version +([0-9]+(?:\.[0-9]+)+)', line)

if match:

env['CCVERSION'] = match.group(1)

def exists(env):

return env.Detect(compilers)