Hello, On Thu, Jan 10, 2008 at 06:47:18PM +0100, Jochen Schmitt wrote: > Kevin Kofler schrieb: > > Add it to the CXXFLAGS, you'll need it there anyway when actually > > building the program. I believe there's also a macro to check the > > existence of the flag, which will add it to the CXXFLAGS > > automatically if the test succeeds. > > > That was the first thing what I have tried to do after I have > recognized this issue, but autoconf > doesn't honor this settings when AC_CHECK_HEADER call the g++ compiler for > compiling the test program. Autoconf checks for features of a compiler. To do this, it has to know which programming language is the compiler supposed to compile. This is why you have to specify the language using AC_LANG or AC_LANG_PUSH/POP. See http://www.gnu.org/software/autoconf/manual/html_node/Language-Choice.html The default language is C, thus people using C exclusively need not know about the language selection. But as soon as you use a different language, e.g. Erlang, Fortran, or C++, you have to keep this in mind. (Using CC=g++ says "my C compiler is named g++" which is not usually true.) And yes, Autoconf uses CXXFLAGS instead of CFLAGS when checking for C++ features. Hope this helps, Stepan Kasal -- fedora-devel-list mailing list fedora-devel-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/fedora-devel-list
