Re: building 32-bit app on 64-bit system

On 9 июн, 19:07, Rainer Weikusat <rweiku...@xxxxxxxxxxx> wrote:
Andrey Rusanov <rusanov...@xxxxxxxxx> writes:

[...]



3. add path to 32bit libgcc
build command:
g++ -m32 -L/opt/lib32/usr/lib -L/opt/lib32/usr/lib/gcc/i686-pc-linux-
gnu/4.4.3 emtyapp.cpp
output:
/usr/bin/ld: skipping incompatible /lib/libc.so.6 when searching for /
lib/libc.so.6
/usr/bin/ld: cannot find /lib/libc.so.6
collect2: ld returned 1 exit status

4. add path to  32bit libc.so.6
build command:
g++ -m32 -L/opt/lib32/usr/lib -L/opt/lib32/usr/lib/gcc/i686-pc-linux-
gnu/4.4.3 -L/opt/lib32/lib emtyapp.cpp
output:
/usr/bin/ld: skipping incompatible /lib/libc.so.6 when searching for /
lib/libc.so.6
/usr/bin/ld: cannot find /lib/libc.so.6
collect2: ld returned 1 exit status

So problem is that linker is looking for "/lib/libc.so.6" instead of
"lc".

-lc is a request to the linker to link with the first file named
libc.so* or libc.a* found in the current library search
path. Consequently, the output quoted above tells you that no
compatible C-library was found in the place where you believed one to
be (/opt/lib32/lib)

ok, in this case linker must look for "libc.so.6". but not for "/lib/
libc.so.6".
/lib/libc.so.6 - is default location of libc.so.6.

i tried to use -L/opt/lib32 hoping linker will concatenate it with /
lib/libc.so.6, but no success.
.

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