From 488a09fffbdbd2cc737a688ff9b38d86f74a9f9b Mon Sep 17 00:00:00 2001
From: Aaron Gyes <me@aaron.gy>
Date: Fri, 7 Oct 2016 23:52:33 -0700
Subject: [PATCH] Don't prefer clang++

This change causes our configure script to just use the default behavior
of autoconf: in practice it will try g++ instead of clang++ first.

There are good reasons to use the behavior this reverts, namely g++
might be a symlink to clang++ and clang++ is never a symlink to g++ -
when `configure` says using "g++" that doens't tell us much.

On more systems than not, as far as I can tell, clang++ will often be a
newer compiler than g++ from what I can see as well.

However, it appears we have some bad things happening with Cygwin on
clang.

Fixes #3435
---
 configure.ac | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/configure.ac b/configure.ac
index 2df950807..a72c8b8bd 100644
--- a/configure.ac
+++ b/configure.ac
@@ -87,9 +87,9 @@ fi
 # So ensure this happens before we modify CXXFLAGS below
 # Do CC also, because PCRE2 will use it. Prefer clang++,
 # targets like FreeBSD ship an ancient one.
-AC_PROG_CC([clang llvm-gcc gcc cc])
+AC_PROG_CC
 AC_PROG_CC_STDC # c99
-AC_PROG_CXX([clang++ llvm-g++ g++ c++])
+AC_PROG_CXX
 AC_LANG(C++)
 AC_PROG_INSTALL
 AC_PROG_LN_S