Re: [LTP] How to compie a ltp-case into 32-bit on the 64bit system

[Cyril Hrubis <chrubis@suse.cz>]

Hi!
> # make
> make -C ../lib -f "/mnt/tests/kernel/distribution/ltp/generic/ltp-full-20150420/testcases/kernel/syscalls/ipc/msgrcv/../lib/Makefile" all
> make[1]: Entering directory `/mnt/tests/kernel/distribution/ltp/generic/ltp-full-20150420/testcases/kernel/syscalls/ipc/lib'
> make[1]: Nothing to be done for `all'.
> make[1]: Leaving directory `/mnt/tests/kernel/distribution/ltp/generic/ltp-full-20150420/testcases/kernel/syscalls/ipc/lib'
> gcc -g -O2 -g -O2 -fno-strict-aliasing -pipe -Wall -W -g -O2 -Wold-style-definition -m32 -D_FORTIFY_SOURCE=2 -I/mnt/tests/kernel/distribution/ltp/generic/ltp-full-20150420/testcases/kernel/include -I/mnt/tests/kernel/distribution/ltp/generic/ltp-full-20150420/testcases/kernel/syscalls/ipc/msgrcv/../lib -I../../../../../include -I../../../../../include   -L/mnt/tests/kernel/distribution/ltp/generic/ltp-full-20150420/testcases/kernel/syscalls/ipc/msgrcv/../lib -L../../../../../lib  msgrcv08.c   -lltp -lipc -o msgrcv08
> /usr/bin/ld: skipping incompatible ../../../../../lib/libltp.a when searching for -lltp
> /usr/bin/ld: cannot find -lltp
> /usr/bin/ld: skipping incompatible /mnt/tests/kernel/distribution/ltp/generic/ltp-full-20150420/testcases/kernel/syscalls/ipc/msgrcv/../lib/libipc.a when searching for -lipc
> /usr/bin/ld: cannot find -lipc
> collect2: error: ld returned 1 exit status
> make: *** [msgrcv08] Error 1

That is because the rest of LTP has been compiled for 64 bit and the
linker fails. You have to compile _whole_ LTP with -m32 (pass
CFLAGS=-m32 to configure) so that the tests can be linked with the test
library.

-- 
Cyril Hrubis
chrubis@suse.cz

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