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#!/usr/bin/env python
# encoding: utf-8
# Thomas Nagy, 2016-2018 (ita)

from waflib import Utils
from waflib.Configure import conf

@conf
def d_platform_flags(self):
	"""
	Sets the extensions dll/so for d programs and libraries
	"""
	v = self.env
	if not v.DEST_OS:
		v.DEST_OS = Utils.unversioned_sys_platform()
	binfmt = Utils.destos_to_binfmt(self.env.DEST_OS)
	if binfmt == 'pe':
		v.dprogram_PATTERN = '%s.exe'
		v.dshlib_PATTERN   = 'lib%s.dll'
		v.dstlib_PATTERN   = 'lib%s.a'
	elif binfmt == 'mac-o':
		v.dprogram_PATTERN = '%s'
		v.dshlib_PATTERN   = 'lib%s.dylib'
		v.dstlib_PATTERN   = 'lib%s.a'
	else:
		v.dprogram_PATTERN = '%s'
		v.dshlib_PATTERN   = 'lib%s.so'
		v.dstlib_PATTERN   = 'lib%s.a'

DLIB = '''
version(D_Version2) {
	import std.stdio;
	int main() {
		writefln("phobos2");
		return 0;
	}
} else {
	version(Tango) {
		import tango.stdc.stdio;
		int main() {
			printf("tango");
			return 0;
		}
	} else {
		import std.stdio;
		int main() {
			writefln("phobos1");
			return 0;
		}
	}
}
'''
"""Detection string for the D standard library"""

@conf
def check_dlibrary(self, execute=True):
	"""
	Detects the kind of standard library that comes with the compiler,
	and sets conf.env.DLIBRARY to tango, phobos1 or phobos2
	"""
	ret = self.check_cc(features='d dprogram', fragment=DLIB, compile_filename='test.d', execute=execute, define_ret=True)
	if execute:
		self.env.DLIBRARY = ret.strip()