Re: Strange warnings from AC_REQUIRE

[Akim Demaille]

AC_DEFUN([AC_REQUIRE_CXX],
[AC_REQUIRE([AC_LANG_COMPILER(C++)])
AC_WARNING([Hey Joe! (C++ version)
])
])

Sorry, I don't have much time, so the answer is short :)

[AC_REQUIRE([AC_LANG_COMPILER(C++)])

is not good, you can't do that.  Use AC_LANG_COMPILER_REQUIRE instead.