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On Sunday 02 December 2012 17:23:16 H.J. Lu wrote: > On Sun, Dec 2, 2012 at 2:10 PM, Carlos O'Donell wrote: > > On Fri, Nov 30, 2012 at 3:23 PM, Mike Frysinger wrote: > >> On Wednesday 28 November 2012 23:10:20 Mike Frysinger wrote: > >>> The __builtin_bswap* functions were introduced in gcc-4.3, not gcc-4.2. > >>> Fix the __GNUC_PREREQ tests to reflect this. > >>> > >>> Otherwise trying to compile code with gcc-4.2 falls down: > >>> In file included from /usr/include/endian.h:60, > >>> > >>> from /usr/include/ctype.h:40, > >>> > >>> /usr/include/bits/byteswap.h: In function 'unsigned int > >>> __bswap_32(unsigned int)': /usr/include/bits/byteswap.h:46: error: > >>> '__builtin_bswap32' was not declared in this scope > >>> /usr/include/bits/byteswap.h: In function 'long long unsigned int > >>> __bswap_64(long long unsigned int)': > >>> /usr/include/bits/byteswap.h:110: error: '__builtin_bswap64' was not > >>> declared in this scope > >> > >> btw, i think this should go into 2.17 (and perhaps the 2.16 branch) > >> since this is a regression from 2.15. > > > > How did you confirm this? Exactly what GCC 4.2 did you use? I'm > > without access to my machines right now, or I'd test this. > > > > I think that H.J. should comment on this since he added the checks for > > GCC 4.2. > > I was wrong. __builtin_bswap32 was added in GCC 4.3. pushed then -mike
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