Carl, I cannot answer for why 32-bit is the default, but it is not so uncommon.
Here is Debian Wheezy on PPC64: debian@wheezy:~$ uname -a Linux wheezy 3.2.0-4-powerpc64 #1 SMP Debian 3.2.68-1+deb7u1 ppc64 GNU/Linux debian@wheezy:~$ gcc hello.c debian@wheezy:~$ file a.out a.out: ELF 32-bit MSB executable, PowerPC or cisco 4500, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.26, BuildID[sha1]=0x7aa335bac96e4f56ae4cdf5a3823a359e3d90585, with unknown capability 0x41000000 = 0x13676e75, with unknown capability 0x10000 = 0xb0401, not stripped Debian Wheezy on SPARC64: phargrov@sparc64:~$ uname -a Linux sparc64 3.2.0-4-sparc64 #1 Debian 3.2.78-1 sparc64 GNU/Linux phargrov@sparc64:~$ gcc hello.c phargrov@sparc64:~$ file a.out a.out: ELF 32-bit MSB executable, SPARC32PLUS, V8+ Required, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.26, BuildID[sha1]=0xcc3e4759e903d238cc9afe4ea5e9c5ebe6ab1b77, not stripped So, I am not surprised at all that the same is true for Debian on MIPS64. Same on Solaris for x86-64, FWIW. -Paul On Thu, Apr 21, 2016 at 2:45 AM, Carl Eugen Hoyos <ceho...@ag.or.at> wrote: > Hi! > > On Wed, 20 Apr 2016, Paul Hargrove wrote: > > Rich, >> The *default* ABI is "32", but (at least) "-mabi=64" and "-mabi=m32" are >> available >> > > I also found out yesterday that -mabi=64 is needed but I wonder why 32bit > is the default: I would be very surprised if my compiler on Linux x86-64 > (that also supports x86-32) would not default to 64 bit. > > Carl Eugen > -- Paul H. Hargrove phhargr...@lbl.gov Computer Languages & Systems Software (CLaSS) Group Computer Science Department Tel: +1-510-495-2352 Lawrence Berkeley National Laboratory Fax: +1-510-486-6900
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