+# rw_PROG_CXX_WORKS
+# Check whether the C++ compiler works.
+AC_CACHE_CHECK([whether the C++ compiler works],
+ [rw_cv_prog_cxx_works],
+ [AC_LANG_PUSH([C++])
+ AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])],
+ [check_cxx_designated_initializers=yes],
+ [rw_cv_prog_cxx_works=no])
+ if test "$check_cxx_designated_initializers" = "yes"; then
+ AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
+ struct foo { int a; int b; };
+ void fct(void)
+ {
+ struct foo f = { .a = 0, .b = 1 };
+ }
+ ]])],[
+ rw_cv_prog_cxx_works=yes
+ ],[
+ rw_cv_prog_cxx_works=no
+ ])
+ fi
+ AC_LANG_POP([C++])])
+
+AM_CONDITIONAL([CXX_WORKS], [test "x$rw_cv_prog_cxx_works" = "xyes"])
+