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From 7af6cbe74d48a9853b60b029d4ce38a963386138 Mon Sep 17 00:00:00 2001
From: Romain Naour <romain.naour@gmail.com>
Date: Sun, 3 Jul 2016 20:19:48 +0200
Subject: [PATCH] webrtc: C++11 is only required for WebRTC support
Make C++11 support optional and explicitely check for gnu++11.
Stop the build only if no C++11 support has been found and WebRTC
support has been resquested.
Signed-off-by: Romain Naour <romain.naour@gmail.com>
---
configure.ac | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/configure.ac b/configure.ac
index 4edc8e0..fea93a9 100644
--- a/configure.ac
+++ b/configure.ac
@@ -84,7 +84,7 @@ AM_PROG_CC_C_O
# Only required if you want the WebRTC canceller -- no runtime dep on
# libstdc++ otherwise
AC_PROG_CXX
-AX_CXX_COMPILE_STDCXX_11
+AX_CXX_COMPILE_STDCXX_11([ext],[optional])
AC_PROG_GCC_TRADITIONAL
AC_USE_SYSTEM_EXTENSIONS
@@ -1414,6 +1414,9 @@ fi
AC_ARG_ENABLE([webrtc-aec],
AS_HELP_STRING([--enable-webrtc-aec], [Enable the optional WebRTC-based echo canceller]))
+AS_IF([test "x$enable_webrtc_aec" = "xyes" && test "$HAVE_CXX11" = "0"],
+ [AC_MSG_ERROR([*** webrtc-audio-processing needs C++11 support])])
+
AS_IF([test "x$enable_webrtc_aec" != "xno"],
[PKG_CHECK_MODULES(WEBRTC, [ webrtc-audio-processing >= 0.2 ], [HAVE_WEBRTC=1], [HAVE_WEBRTC=0])],
[HAVE_WEBRTC=0])
--
2.5.5
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