config: Require that C++ use the C++11 standard

Introduce the AX_CXX_COMPILE_STDCXX macro from https://www.gnu.org/software/autoconf-archive/ax_cxx_compile_stdcxx.html. Employ the macro to set the C++ compiler to use C++11.
flux-framework · Sep 27, 2017 · 4c21db9 · 4c21db9
1 parent e2efec5
commit 4c21db9
Show file tree

Hide file tree

Showing 2 changed files with 983 additions and 0 deletions.
diff --git a/configure.ac b/configure.ac
@@ -19,6 +19,7 @@ AC_DEFINE([_GNU_SOURCE], 1,
           [Define _GNU_SOURCE so that we get all necessary prototypes])
 AC_PROG_CC_C99
 AC_PROG_CXX
+AX_CXX_COMPILE_STDCXX([11], [noext], [mandatory])
 AC_PROG_LN_S
 AC_PROG_MAKE_SET
 AM_PROG_CC_C_O