On Fri, Dec 13, 2013 at 5:36 AM, Juhász Ádám <jad...@gmail.com> wrote:
> However, the GNU compiler is also capable to select the proper language > and use the proper tools for compillation, so GNU's cpp will compile… I > believe Fortran, or even Java, if the proper alternative GNU compiler > present. I've never used this capability this extremely though, and not > aware wether other compilers are capable to do so. No, what's actually happening is that `-traditional` is being passed; this causes gcc and its cpp to behave like the old AT&T Portable C Compiler that was available on older commercial Unix systems, so that it can compile pre-ANSI (sometimes called "K&R") C code. PCC's cpp was a straight textual substitution macro processor that did not understand the syntax of what it was substituting; ANSI C compilers cannot use that kind of macro processor. The -traditional option to gcc and its cpp exists only to support pre-ANSI (K&R) C code. It happens to also be abusable (at least in its present form) to work with non-C languages, but not even the gcc developers advise this use. It is not reliable, it is not guaranteed to work with non-C code, and it is not guaranteed to be available even in future versions of gcc (there is not a lot of pre-ANSI C code around any more). -- brandon s allbery kf8nh sine nomine associates allber...@gmail.com ballb...@sinenomine.net unix, openafs, kerberos, infrastructure, xmonad http://sinenomine.net
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