From: Bert Vermeulen <redacted>
Date: Fri, 18 Jul 2014 17:55:38 +0000 (+0200)
Subject: configure: Deal with missing macro a bit better.
X-Git-Tag: libsigrok-0.4.0~1248
X-Git-Url: https://sigrok.org/gitaction?a=commitdiff_plain;h=f8158d56554688c9ff38731dbfd234fac46b6d9d;p=libsigrok.git

configure: Deal with missing macro a bit better.

The AX_CXX_COMPILE_STDCXX_11 macro is found in the autoconf-archive
package. If this is not installed, invoking the macro spits out an
error message that makes it look like a syntax error. This wraps it
in a check.
---

diff --git a/configure.ac b/configure.ac
index eac88f1f..db6f644e 100644
--- a/configure.ac
+++ b/configure.ac
@@ -173,7 +173,8 @@ AC_ARG_ENABLE(java,
 
 # Check if the C++ compiler supports the C++11 standard.
 
-AX_CXX_COMPILE_STDCXX_11(,[optional])
+m4_ifdef([AX_CXX_COMPILE_STDCXX_11], [AX_CXX_COMPILE_STDCXX_11(,[optional])],
+	[AC_MSG_NOTICE([Missing macro m4_toupper(aX_CXX_COMPILE_STDCXX_11), no C++11 check])])
 
 if test "x$HAVE_CXX11" != "x1"; then
 	BINDINGS_CXX="no"