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diff --git a/third_party/waf/waflib/extras/clang_cross.py b/third_party/waf/waflib/extras/clang_cross.py
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+#!/usr/bin/env python
+# encoding: utf-8
+# Krzysztof KosiƄski 2014
+# DragoonX6 2018
+
+"""
+Detect the Clang C compiler
+This version is an attempt at supporting the -target and -sysroot flag of Clang.
+"""
+
+from waflib.Tools import ccroot, ar, gcc
+from waflib.Configure import conf
+import waflib.Context
+import waflib.extras.clang_cross_common
+
+def options(opt):
+ """
+ Target triplet for clang::
+ $ waf configure --clang-target-triple=x86_64-pc-linux-gnu
+ """
+ cc_compiler_opts = opt.add_option_group('Configuration options')
+ cc_compiler_opts.add_option('--clang-target-triple', default=None,
+ help='Target triple for clang',
+ dest='clang_target_triple')
+ cc_compiler_opts.add_option('--clang-sysroot', default=None,
+ help='Sysroot for clang',
+ dest='clang_sysroot')
+
+@conf
+def find_clang(conf):
+ """
+ Finds the program clang and executes it to ensure it really is clang
+ """
+
+ import os
+
+ cc = conf.find_program('clang', var='CC')
+
+ if conf.options.clang_target_triple != None:
+ conf.env.append_value('CC', ['-target', conf.options.clang_target_triple])
+
+ if conf.options.clang_sysroot != None:
+ sysroot = str()
+
+ if os.path.isabs(conf.options.clang_sysroot):
+ sysroot = conf.options.clang_sysroot
+ else:
+ sysroot = os.path.normpath(os.path.join(os.getcwd(), conf.options.clang_sysroot))
+
+ conf.env.append_value('CC', ['--sysroot', sysroot])
+
+ conf.get_cc_version(cc, clang=True)
+ conf.env.CC_NAME = 'clang'
+
+@conf
+def clang_modifier_x86_64_w64_mingw32(conf):
+ conf.gcc_modifier_win32()
+
+@conf
+def clang_modifier_i386_w64_mingw32(conf):
+ conf.gcc_modifier_win32()
+
+@conf
+def clang_modifier_x86_64_windows_msvc(conf):
+ conf.clang_modifier_msvc()
+
+ # Allow the user to override any flags if they so desire.
+ clang_modifier_user_func = getattr(conf, 'clang_modifier_x86_64_windows_msvc_user', None)
+ if clang_modifier_user_func:
+ clang_modifier_user_func()
+
+@conf
+def clang_modifier_i386_windows_msvc(conf):
+ conf.clang_modifier_msvc()
+
+ # Allow the user to override any flags if they so desire.
+ clang_modifier_user_func = getattr(conf, 'clang_modifier_i386_windows_msvc_user', None)
+ if clang_modifier_user_func:
+ clang_modifier_user_func()
+
+def configure(conf):
+ conf.find_clang()
+ conf.find_program(['llvm-ar', 'ar'], var='AR')
+ conf.find_ar()
+ conf.gcc_common_flags()
+ # Allow the user to provide flags for the target platform.
+ conf.gcc_modifier_platform()
+ # And allow more fine grained control based on the compiler's triplet.
+ conf.clang_modifier_target_triple()
+ conf.cc_load_tools()
+ conf.cc_add_flags()
+ conf.link_add_flags()