-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Bob Friesenhahn <bfriesen@xxxxxxxxxxxxxxxxxxx> writes: > On Mon, 29 Nov 2004, Roger Leigh wrote: >> >> It would be great if in the next year, AC_PROG_CC could default to >> using a C99 compiler. Since it should be backward-compatible with C89 >> (??), this shouldn't be required, but I would really like to see C99 >> as the default, with some means of choosing an older standard if so >> required. > > Do you have a purpose for using C99 other than to intentionally write > non-portable software? Yes: I would like to use C99 features, and the current autoconf support isn't adequate. I can portably make use of _Bool, inline and restrict, but that's it. The things I currently use, or would like to use, are: - - C++-style comments - - long long - - Mixed declarations and code - - Declarations in for loops. - - Named Initialisers for structs None of these are strictly /necessary/, but I do believe the latter three do make for cleaner, more maintainable code. > Is C99 really 100% upward compatible with the previous version of the > standard, or is it possibly more strict and include type changes which > might impact library ABIs? I believe that it's entirely compatible, providing you don't use the new datatypes. C99 support is nearly fully complete: http://gcc.gnu.org/c99status.html and the remaining issues are library issues, hopefully to come with a future glibc. I do think autoconf should support it--it is the current C standard. Regards, Roger - -- Roger Leigh Printing on GNU/Linux? http://gimp-print.sourceforge.net/ Debian GNU/Linux http://www.debian.org/ GPG Public Key: 0x25BFB848. Please sign and encrypt your mail. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.5 (GNU/Linux) Comment: Processed by Mailcrypt 3.5.8 <http://mailcrypt.sourceforge.net/> iD8DBQFBq41SVcFcaSW/uEgRAnk+AJoCqrLImF3/nVlG6lLGKfv6bSr5TACg7RR+ 1M1QAAFE6DE150vxTY5RnEU= =f01/ -----END PGP SIGNATURE----- _______________________________________________ Autoconf mailing list Autoconf@xxxxxxx http://lists.gnu.org/mailman/listinfo/autoconf
