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tidu
n00b
Joined: 18 May 2005
Posts: 14
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 Posted: Wed May 18, 2005 10:24 pm Post subject: crosscompile x86->amd64 |
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Hi folks,
I'm currently trying to move from my gentoo from x86 (i686-pc-linux-gnu) running on a AMD64 (2800) to an amd64 (x86_64-pc-linux-gnu) environment via a crosscompile. YES, I know, the easiest way is to do a reinstall from scratch (using the install-iso-img), but thats boring.
I've reviewed the following docs:
http://www.gentoo.org/proj/en/base/amd64/technotes.xml
http://www.gentoo.org/doc/en/handbook/handbook-amd64.xml
http://dev.gentoo.org/~vapier/CROSS-COMPILE-HOWTO
http://www.sable.mcgill.ca/~dbelan2/crossdev/crossdev-powerpc-i686.html
So my plan is to use crossdev to build a crosscompiler that allows me to install the new gentoo system, so far that I can boot from.
| Code: | | # crossdev -t x86_64-pc-linux-gnu |
Currently I stuck in cross-gcc-stage2... 
| Code: | /mnt/portage/tmp/cross/x86_64-pc-linux-gnu/portage/gcc-3.4.3.20050110-r2/work/build/gcc/xgcc -B/mnt/portage/tmp/cross/x86_64-pc-linux-gnu/portage/gcc-3.4.3.20050110-r2/work/build/gcc/ -B/usr/x86_64-pc-linux-gnu/bin/ -B/usr/x86_64-pc-linux-gnu/lib/ -isystem /usr/x86_64-pc-linux-gnu/include -isystem /usr/x86_64-pc-linux-gnu/sys-include -O2 -DIN_GCC -DCROSS_COMPILE -DNATIVE_CROSS -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -isystem ./include -fPIC -DHAVE_SYSLOG -g -DHAVE_GTHR_DEFAULT -DIN_LIBGCC2 -D__GCC_FLOAT_NOT_NEEDED -Dinhibit_libc -D_LIBC_PROVIDES_SSP_ -shared -nodefaultlibs -Wl,--soname=libgcc_s.so.1 -Wl,--version-script=libgcc/32/libgcc.map -o 32/libgcc_s.so.1.tmp -m32 libgcc/32/_muldi3.o libgcc/32/_negdi2.o libgcc/32/_lshrdi3.o libgcc/32/_ashldi3.o libgcc/32/_ashrdi3.o libgcc/32/_cmpdi2.o libgcc/32/_ucmpdi2.o libgcc/32/_floatdidf.o libgcc/32/_floatdisf.o libgcc/32/_fixunsdfsi.o libgcc/32/_fixunssfsi.o libgcc/32/_fixunsdfdi.o libgcc/32/_fixdfdi.o libgcc/32/_fixunssfdi.o libgcc/32/_fixsfdi.o libgcc/32/_fixxfdi.o libgcc/32/_fixunsxfdi.o libgcc/32/_floatdixf.o libgcc/32/_fixunsxfsi.o libgcc/32/_fixtfdi.o libgcc/32/_fixunstfdi.o libgcc/32/_floatditf.o libgcc/32/_clear_cache.o libgcc/32/_enable_execute_stack.o libgcc/32/_trampoline.o libgcc/32/__main.o libgcc/32/_absvsi2.o libgcc/32/_absvdi2.o libgcc/32/_addvsi3.o libgcc/32/_addvdi3.o libgcc/32/_subvsi3.o libgcc/32/_subvdi3.o libgcc/32/_mulvsi3.o libgcc/32/_mulvdi3.o libgcc/32/_negvsi2.o libgcc/32/_negvdi2.o libgcc/32/_ctors.o libgcc/32/_ffssi2.o libgcc/32/_ffsdi2.o libgcc/32/_clz.o libgcc/32/_clzsi2.o libgcc/32/_clzdi2.o libgcc/32/_ctzsi2.o libgcc/32/_ctzdi2.o libgcc/32/_popcount_tab.o libgcc/32/_popcountsi2.o libgcc/32/_popcountdi2.o libgcc/32/_paritysi2.o libgcc/32/_paritydi2.o libgcc/32/_stack_smash_handler.o libgcc/32/_divdi3.o libgcc/32/_moddi3.o libgcc/32/_udivdi3.o libgcc/32/_umoddi3.o libgcc/32/_udiv_w_sdiv.o libgcc/32/_udivmoddi4.o libgcc/32/unwind-dw2.o libgcc/32/unwind-dw2-fde-glibc.o libgcc/32/unwind-sjlj.o libgcc/32/gthr-gnat.o libgcc/32/unwind-c.o -lc && rm -f libgcc_s_32.so && if [ -f 32/libgcc_s.so.1 ]; then mv -f 32/libgcc_s.so.1 32/libgcc_s.so.1.backup; else true; fi && mv 32/libgcc_s.so.1.tmp 32/libgcc_s.so.1 && ln -s 32/libgcc_s.so.1 libgcc_s_32.so
/usr/x86_64-pc-linux-gnu/bin/ld: skipping incompatible /usr/x86_64-pc-linux-gnu/lib/libc.so when searching for -lc
/usr/x86_64-pc-linux-gnu/bin/ld: skipping incompatible /usr/x86_64-pc-linux-gnu/lib/libc.a when searching for -lc
/usr/x86_64-pc-linux-gnu/bin/ld: skipping incompatible /usr/lib/gcc/x86_64-pc-linux-gnu/3.4.3-20050110/../../../../x86_64-pc-linux-gnu/lib/libc.so when searching for -lc
/usr/x86_64-pc-linux-gnu/bin/ld: skipping incompatible /usr/lib/gcc/x86_64-pc-linux-gnu/3.4.3-20050110/../../../../x86_64-pc-linux-gnu/lib/libc.a when searching for -lc
/usr/x86_64-pc-linux-gnu/bin/ld: skipping incompatible /usr/x86_64-pc-linux-gnu/binutils-bin/2.15.92.0.2/../../lib/libc.so when searching for -lc
/usr/x86_64-pc-linux-gnu/bin/ld: skipping incompatible /usr/x86_64-pc-linux-gnu/binutils-bin/2.15.92.0.2/../../lib/libc.a when searching for -lc
/usr/x86_64-pc-linux-gnu/bin/ld: cannot find -lc
collect2: ld returned 1 exit status
make[2]: *** [32/libgcc_s_32.so] Error 1
make[2]: Leaving directory `/mnt/portage/tmp/cross/x86_64-pc-linux-gnu/portage/gcc-3.4.3.20050110-r2/work/build/gcc'
make[1]: *** [stmp-multilib] Error 2
make[1]: Leaving directory `/mnt/portage/tmp/cross/x86_64-pc-linux-gnu/portage/gcc-3.4.3.20050110-r2/work/build/gcc'
make: *** [all-gcc] Error 2
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AFAIK it tries to link against libc (-lc), but that doesn't work.
 Now I'm wondering what mess I'm in. I don't really understand, what stage2 means in that respective. Does this mean it tries to create gcc and link it with 64-bit libs? -> why is that, I don't need that for a x-compiler.
I'd appreciate any comments on the functionallity of this X-compiling.
Thanks & regards
Tidu |
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tidu
n00b
Joined: 18 May 2005
Posts: 14
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| Posted: Fri May 20, 2005 6:03 am Post subject: why linking against 64libs? |
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I've slept over this:
*) WHY is ld using the 64Bit-Version of libc.a? This will not work. The compiler is targeted for 32 Bit but shall produce 64 Bit.
*) WHAT is different from Stage1? I've reviewed the crossdev, but I don't understand the major difference from the stage1 compile (except feature like c++, etc ).
*) WHAT purpose has the stage1/stage2 on crosscompilers? As I build a crosscompiler, I don't want it ever to be linked with the new (target-systems) libraries. Or do I?
Any comments are welcome. |
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ZByte
Tux's lil' helper
Joined: 18 Aug 2004
Posts: 141
Location: Moscow, Russia
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tidu
n00b
Joined: 18 May 2005
Posts: 14
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| Posted: Mon May 23, 2005 7:44 pm Post subject: |
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good point.
I will have an eye on that  |
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Gentoo on AMD64
