Problem: it's 2016 and we are building with C++98

Solution: bump to C++11 and C11 in autoconf

Problem: it's 2016 and we are building with C++98
Solution: bump to C++11 and C11 in autoconf
7dfbab3f · Luca Boccassi · 80650ecf · 7dfbab3f
Commit 7dfbab3f authored Feb 19, 2016 by Luca Boccassi
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configure.ac configure.ac +2 -1

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--- a/configure.ac
+++ b/configure.ac
@@ -47,8 +47,9 @@ ZMQ_ORIG_CXXFLAGS="${CXXFLAGS:-none}"

 # Checks for programs.
 AC_PROG_CC
-AC_PROG_CC_C99
+AX_CHECK_COMPILE_FLAG([-std=gnu11], [CFLAGS+=" -std=gnu11"], [AC_PROG_CC_C99])
 AC_PROG_CXX
+AX_CXX_COMPILE_STDCXX_11([ext], [optional])
 AM_PROG_CC_C_O
 AC_PROG_SED
 AC_PROG_AWK