On 26 October 2017 at 08:23, vikram1729 wrote: > Hi > > May I know the version of the GCC, since when the > support for 64 bit started? Do you mean 64-bit Intel (x86_64) or just any 64-bit architectures? GCC 3.1 added support for x86_64, 64-bit UltraSPARC, and 64-bit SuperH SH5: https://gcc.gnu.org/gcc-3.1/changes.html But GCC 3.0 already had IA64 (Itanium) support, 2.95.3 had powerpc64, hppa 2.0, and mips64 support, and GCC 2.5.8 already supported the DEC Alpha (I couldn't find when that port was first done). So I don't know the precise answer, but it's more than 20 years ago.
