From: Francesco Chemolli <kinkie@squid-cache.org>
Date: Fri, 17 Apr 2015 07:15:52 +0000 (+0200)
Subject: Detect and use libc++, needed for clang c++11 support
X-Git-Tag: merge-candidate-3-v1~172
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=0378fbca85276b16b435dfc86e90b8b6d9ece1b0;p=thirdparty%2Fsquid.git

Detect and use libc++, needed for clang c++11 support
---

diff --git a/configure.ac b/configure.ac
index 076623db65..11c3bce52a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -95,6 +95,17 @@ fi
 # Check for C++11 compiler support
 AX_CXX_COMPILE_STDCXX_11([noext],[optional])
 
+# check whether libc++ is needed (required for clang on freebsd and MacOS)
+SQUID_CC_REQUIRE_ARGUMENT([squid_cv_stdlib_libcxx], [-stdlib=libc++],[[
+#include <iostream>
+]], [[
+std::cout << ""; return 0;
+]])
+if test "x$squid_cv_stdlib_libcxx" = "xyes" ; then
+   CXX="$CXX -stdlib=libc++"
+   BUILDCXX="$BUILDCXX -stdlib=libc++"
+fi
+
 # test for programs
 AC_PROG_RANLIB
 AC_PROG_CPP