Re: C++ pre-processor flags not updated by ax_cxx_compile_stdcxx.m4

Zack Weinberg <[email protected]> Sun, 20 Mar 2016 09:24:27 -0400
Newsgroups gmane.comp.sysutils.autoconf.archive-maintainers
Message-ID <CAKCAbMj6rT6KAt18AVPQnOMZwr-AZ2W2vfQhewa=RutKh_8Xsw@mail.gmail.com>
You don't want to put C++-specific switches in CPPFLAGS, because
CPPFLAGS is used for all C-family languages.  I think this is probably
addressed by https://savannah.gnu.org/patch/?8818 which puts these
mode selection switches in CXX instead.