[Buildroot] ltp-testsuite without native RPC (commit 8f1c4c49a2ab0fc9e6cf73370f4483e253e5ac2d)

[Baruch Siach <baruch@tkos.co.il>]

Hi Thomas,

On Mon, Oct 19, 2015 at 03:26:18PM +0200, Thomas De Schampheleire wrote:
> On Thu, Oct 15, 2015 at 8:17 PM, Baruch Siach <baruch@tkos.co.il> wrote:
> > On Thu, Oct 15, 2015 at 04:06:39PM +0200, Thomas De Schampheleire wrote:
> >> What about patching ltp-testsuite instead, not enabling the RPC tests
> >> in this case? At first sight this was added with following (ltp)
> >> commit:
> >> https://github.com/linux-test-project/ltp/commit/8e9a4dbb8eaa561e51d6d8ebe5a5342f3e498224
> >
> > Isn't that what ac_cv_header_tirpc_netconfig_h=no is doing?
> 
> I just tried building ltp-testsuite with a no-rpc toolchain on top of
> latest buildroot. Here is the build failure:
> 
> /usr/bin/make -C lib -f
> ".../output/build/ltp-testsuite-20150420/testcases/network/rpc/basic_tests/rpc01/lib/Makefile"
> all
> make[7]: Entering directory
> `.../output/build/ltp-testsuite-20150420/testcases/network/rpc/basic_tests/rpc01/lib'
> .../output/host/usr/bin/powerpc-linux-gcc -D_LARGEFILE_SOURCE
> -D_LARGEFILE64_SOURCE -Os -g -O2 -fno-strict-aliasing -pipe -Wall -W
> -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -Os -Wold-style-definition
> -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FORTIFY_SOURCE=2
> -I../../../../../../include -I../../../../../../include  -c -o
> librpc01.o librpc01.c
> librpc01.c:19:21: fatal error: rpc/xdr.h: No such file or directory
>  #include <rpc/xdr.h>
>                      ^
> compilation terminated.
> make[7]: *** [librpc01.o] Error 1
> 
> 
> I think my original problem (this was with a previous version of
> ltp-testsuite) was that rpc/rpc.h was missing, but I think the bottom
> line is the same: ltp-testsuite attempts to build RPC-related tests
> but the necessary header files are not available.
> 
> My approach was to add libtirpc to the equation, which provides the
> header files and library to make things work.
> 
> With your patch, libtirpc is not added, and so the header files remain
> unavailable.
> 
> How do you suggest to proceed?
> One approach is to disable the ltp tests that use rpc entirely (on top
> of your last patch), another one is to disable only the tests that use
> authdes_create (on top of my original patch; reverting yours).
> Other ideas are welcome, of course.

The best solution seems to be fixing the root cause upstream. There was an 
attempt by Natanael Copa in commit c0547c56dafb8e1 (Add configure option to 
disable DES authentication) to add a --disable-authdes configure option to 
libtirpc. There was another attempt in commit 58cd17f999 (Fix: unresolved 
_crypt() symbols) to add a local implementation of DES. The first attempt was 
later reverted in commit f17b44048003 (Revert commit c0547c56dafb ('Add 
configure option to disable DES')) which also (inadvertedly?) removed 
des_crypt.c and des_impl.c from Makefile.am. Restoring the local DES 
implementation looks not so hard to do.

In the mean time I think we can replace our 
0007-Disable-DES-authentification-support.patch with something more flexible 
along the lines of Natanael's reverted patch.

J?rg, do you concur?

baruch

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