Preventing a biarch build

Preventing a biarch build

[Sidney Cadot]

Hi all,

When bootstrapping gcc 4.1.1 on my AMB64 system, I run into some  
troubles that seem to be connected to the linker not finding 32-bit  
versions of some libraries by the available C compiler (gcc 4.0.3 on  
Kubuntu). This is the place where the make process breaks down:

./xgcc -B./ -B/home/sidney/gccbuild/gcc-4.1.1-native.rootdir/x86_64- 
unknown-linux-gnu/bin/ -isystem /home/sidney/gccbuild/gcc-4.1.1- 
native.rootdir/x86_64-unknown-linux-gnu/include -isystem /home/sidney/ 
gccbuild/gcc-4.1.1-native.rootdir/x86_64-unknown-linux-gnu/sys- 
include -L/home/sidney/gccbuild/gcc-4.1.1-native.objdir/gcc/../ld - 
O2  -O2 -g -O2   -DIN_GCC    -W -Wall -Wwrite-strings -Wstrict- 
prototypes -Wmissing-prototypes -Wold-style-definition  -isystem ./ 
include  -fPIC -g -DHAVE_GTHR_DEFAULT -DIN_LIBGCC2 - 
D__GCC_FLOAT_NOT_NEEDED  -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_s.o libgcc/32/_negdi2_s.o  
libgcc/32/_lshrdi3_s.o libgcc/32/_ashldi3_s.o libgcc/32/_ashrdi3_s.o  
libgcc/32/_cmpdi2_s.o libgcc/32/_ucmpdi2_s.o libgcc/32/_floatdidf_s.o  
libgcc/32/_floatdisf_s.o libgcc/32/_fixunsdfsi_s.o libgcc/32/ 
_fixunssfsi_s.o libgcc/32/_fixunsdfdi_s.o libgcc/32/_fixdfdi_s.o  
libgcc/32/_fixunssfdi_s.o libgcc/32/_fixsfdi_s.o libgcc/32/ 
_fixxfdi_s.o libgcc/32/_fixunsxfdi_s.o libgcc/32/_floatdixf_s.o  
libgcc/32/_fixunsxfsi_s.o libgcc/32/_fixtfdi_s.o libgcc/32/ 
_fixunstfdi_s.o libgcc/32/_floatditf_s.o libgcc/32/_clear_cache_s.o  
libgcc/32/_enable_execute_stack_s.o libgcc/32/_trampoline_s.o libgcc/ 
32/__main_s.o libgcc/32/_absvsi2_s.o libgcc/32/_absvdi2_s.o libgcc/32/ 
_addvsi3_s.o libgcc/32/_addvdi3_s.o libgcc/32/_subvsi3_s.o libgcc/32/ 
_subvdi3_s.o libgcc/32/_mulvsi3_s.o libgcc/32/_mulvdi3_s.o libgcc/32/ 
_negvsi2_s.o libgcc/32/_negvdi2_s.o libgcc/32/_ctors_s.o libgcc/32/ 
_ffssi2_s.o libgcc/32/_ffsdi2_s.o libgcc/32/_clz_s.o libgcc/32/ 
_clzsi2_s.o libgcc/32/_clzdi2_s.o libgcc/32/_ctzsi2_s.o libgcc/32/ 
_ctzdi2_s.o libgcc/32/_popcount_tab_s.o libgcc/32/_popcountsi2_s.o  
libgcc/32/_popcountdi2_s.o libgcc/32/_paritysi2_s.o libgcc/32/ 
_paritydi2_s.o libgcc/32/_powisf2_s.o libgcc/32/_powidf2_s.o libgcc/ 
32/_powixf2_s.o libgcc/32/_powitf2_s.o libgcc/32/_mulsc3_s.o libgcc/ 
32/_muldc3_s.o libgcc/32/_mulxc3_s.o libgcc/32/_multc3_s.o libgcc/32/ 
_divsc3_s.o libgcc/32/_divdc3_s.o libgcc/32/_divxc3_s.o libgcc/32/ 
_divtc3_s.o libgcc/32/_divdi3_s.o libgcc/32/_moddi3_s.o libgcc/32/ 
_udivdi3_s.o libgcc/32/_umoddi3_s.o libgcc/32/_udiv_w_sdiv_s.o libgcc/ 
32/_udivmoddi4_s.o libgcc/32/unwind-dw2_s.o libgcc/32/unwind-dw2-fde- 
glibc_s.o libgcc/32/unwind-sjlj_s.o libgcc/32/gthr-gnat_s.o libgcc/32/ 
unwind-c_s.o -lc && rm -f 32/libgcc_s.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 libgcc_s.so.1  
32/libgcc_s.so
/usr/bin/ld: skipping incompatible /usr/lib/../lib/libc.so when  
searching for -lc
/usr/bin/ld: skipping incompatible /usr/lib/../lib/libc.a when  
searching for -lc
/usr/bin/ld: skipping incompatible /usr/bin/../lib/libc.so when  
searching for -lc
/usr/bin/ld: skipping incompatible /usr/bin/../lib/libc.a when  
searching for -lc
/usr/bin/ld: skipping incompatible /usr/lib/libc.so when searching  
for -lc
/usr/bin/ld: skipping incompatible /usr/lib/libc.a when searching for  
-lc
/usr/bin/ld: cannot find -lc
collect2: ld returned 1 exit status
make[3]: *** [32/libgcc_s.so] Error 1
make[3]: Leaving directory `/home/sidney/gccbuild/gcc-4.1.1- 
native.objdir/gcc'
make[2]: *** [stmp-multilib] Error 2
make[2]: Leaving directory `/home/sidney/gccbuild/gcc-4.1.1- 
native.objdir/gcc'
make[1]: *** [stage1_build] Error 2
make[1]: Leaving directory `/home/sidney/gccbuild/gcc-4.1.1- 
native.objdir/gcc'
make: *** [bootstrap] Error 2


As I am not really interested in the biarch capability anyway, I am  
looking for a way to direct the bootstrap process to skip all that  
and just build me a 64-bit capable compiler. Ideally, there would be  
a ./configure flag to prevent building a biarch compiler.

I looked in the docs but I cannot find an easy way to do this.

Does anyone know how this can be done?

Cheerio, Sidney

Re: Preventing a biarch build

[Segher Boessenkool]

> When bootstrapping gcc 4.1.1 on my AMB64 system, I run into some  
> troubles that seem to be connected to the linker not finding 32-bit  
> versions of some libraries by the available C compiler (gcc 4.0.3  
> on Kubuntu). This is the place where the make process breaks down:

> As I am not really interested in the biarch capability anyway, I am  
> looking for a way to direct the bootstrap process to skip all that  
> and just build me a 64-bit capable compiler. Ideally, there would  
> be a ./configure flag to prevent building a biarch compiler.
>
> I looked in the docs but I cannot find an easy way to do this.

--disable-multilib


Segher