W dniu 27.09.2012 16:40, Sergey Ivanov pisze: > 2012/9/27 Marcin Mirosław <marcin@xxxxxxxx>: >> W dniu 27.09.2012 15:28, Sergey Ivanov pisze: >>> Tried to compile code for i686 instructions set under my AMD x64 in gcc 4.6. >>> Specified -march=i686. >>> Obtained "error: CPU you selected does not support x86-64 instruction set" >>> Why? >>> Full options line is: >>> export CC=$(compiler) -O3 -finline-limit=100000 --param >>> inline-unit-growth=10000 --param large-function-growth=100000 \ >>> --param large-function-insns=47000 -march=i686 -Wall >>> -Wno-format-security $(GCC_VER_MORE_45_NO_UNUSED_RET) --param >>> large-stack-frame=65536 \ >>> --param large-stack-frame-growth=3000 $(explicit_templates) -pg >>> >> >> Hi, >> maybe with "-m32" it will work better? >> Regards. >> > With m32 doesn't work with other reason: > > ice@ubuntu:~/science/trunk/main/monte_carlo_offlattice_moldyn/src$ make > In file included from > /usr/include/c++/4.6/x86_64-linux-gnu/32/bits/os_defines.h:40:0, > from > /usr/include/c++/4.6/x86_64-linux-gnu/32/bits/c++config.h:393, > from /usr/include/c++/4.6/cstdio:43, > from Exception.cpp:4: > /usr/include/features.h:324:26: fatal error: bits/predefs.h: No such > file or directory > compilation terminated. > > Seems headers for 32bit environment are wrong. What should i do to > make them better? I don't use ubuntu so I can't check this solution: http://ubuntuforums.org/showthread.php?t=1877944
