Hi,
> Hi Rishi/Serge,
>
> libclone.c is giving some unexpected build error(s) on the following
> x86_64 machine. Can you please look in to the following:
>
> 1) Linux 2.6.16-1.2080_FC5 #1 SMP Tue Mar 28 03:38:47 EST 2006 x86_64
> x86_64 x86_64 GNU/Linux,
>
> make[4]: Entering directory
> `/root/subrata/ltp/ltp-intermediate-20080820/testcases/kernel/containers/libclone'
> cc -Wall -c -o libclone.o libclone.c
> libclone.c: In function ‘do_unshare_tests’:
> libclone.c:76: error: ‘__NR_unshare’ undeclared (first use in this
> function)
> libclone.c:76: error: (Each undeclared identifier is reported only once
> libclone.c:76: error: for each function it appears in.)
> make[4]: *** [libclone.o] Error 1
>
> Regards--
> Subrata
>
I met similar situations when writing test cases.
In fadvice64 I handled it like in .c file:
/* Check this system has fadvise64 system which is used
in posix_fadvise. */
if ((_FILE_OFFSET_BITS != 64) && (__NR_fadvise64 == 0)) {
tst_resm(TWARN, "This test can only run on kernels that
implements ");
tst_resm(TWARN, "fadvise64 which is used from posix_fadvise");
exit(0);
}
In io_setup I did in Makefile:
check_header = $(shell \
if echo "\#include <$(1)>" | $(CC) -E - > /dev/null 2>&1 ; \
then echo yes ; \
else echo no ; fi)
ifeq ($(call check_header,libaio.h),yes)
Is there any standard rule to handle such situation?
Generally autoconf helps. However, ltp people may
want to handle it runtime, not buildtime.
What we have to consider are:
(1) kernel version
(1.1) kernel configuration
(1.2) system call existence
(2) hardware platform
(3) library dependency
(4) header file dependency
If the standard rule is given, let's add
code snippets which make people easier to
follow the rule to LTP.
How do you think?
Masatake YAMATO
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