From e07b3293e45d2926fb00f3229da2dbf3c8a37ffa Mon Sep 17 00:00:00 2001
From: Sven Verdoolaege <skimo@kotnet.org>
Date: Sat, 3 Sep 2016 10:49:17 +0200
Subject: [PATCH] configure.ac: improve detection of 5-argument setLangDefaults

In particular, include all the required header files to avoid
the test failing because of issues unrelated to the number
of arguments of CompilerInvocation::setLangDefaults.

Signed-off-by: Sven Verdoolaege <skimo@kotnet.org>
---
 configure.ac | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index bf013333..152f00b7 100644
--- a/configure.ac
+++ b/configure.ac
@@ -235,7 +235,11 @@ system)
 		[clang/Basic/Builtins.h], [],
 		[AC_DEFINE([initializeBuiltins], [InitializeBuiltins],
 		[Define to InitializeBuiltins for older versions of clang])])
-	AC_TRY_COMPILE([#include <clang/Frontend/CompilerInstance.h>], [
+	AC_TRY_COMPILE([
+		#include <clang/Basic/TargetOptions.h>
+		#include <clang/Lex/PreprocessorOptions.h>
+		#include <clang/Frontend/CompilerInstance.h>
+	], [
 		using namespace clang;
 		CompilerInstance *Clang;
 		TargetOptions TO;
-- 
2.11.4.GIT