Merge commit '8ef972ae6a8383df792a9755294f03f6ad38d7cd'

Author: Darth Vader

src/phast/PhreeqcRM/configure.ac

@@ -69,8 +69,8 @@ AC_PROG_AWK
 AC_PROG_CPP
 AC_PROG_LN_S
 
-# c++14 is required
-AX_CXX_COMPILE_STDCXX(14, [ext], [mandatory])
+# c++11 is required
+AX_CXX_COMPILE_STDCXX(11, [ext], [mandatory])
 
 # Check if the fortran test should be included
 AC_MSG_CHECKING([if Fortran test is added])