[Buildroot] [PATCH] rt-tests: Make it available only when NPLT is selected

[Peter Korsgaard <jacmet@uclibc.org>]

>>>>> "Thomas" == Thomas Petazzoni <thomas.petazzoni@free-electrons.com> writes:

 Thomas> Le Mon, 2 Apr 2012 15:15:54 +0100,
 Thomas> Markos Chandras <markos.chandras@imgtec.com> a ?crit :

 >> rt-tests package requires some definitions (like PTHREAD_PRIO_INHERIT
 >> etc) which are only available in Native Posix Linux Thread
 >> implementation.
 >> 
 >> Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>

 Thomas> I agree there is a problem, but unfortunately this solution will break
 Thomas> external toolchains and crosstool-ng toolchains that use glibc or
 Thomas> eglibc. Those toolchains have NPTL support, but BR2_PTHREADS_NATIVE is
 Thomas> not defined when using such toolchains.

 Thomas> I guess the real solution would be something like:

 Thomas> config BR2_TOOLCHAIN_HAS_NPTL
 Thomas> 	bool

 Thomas> and then for internal backend, select this option is
 Thomas> BR2_PTHREADS_NATIVE is enabled. For external backend, select this
 Thomas> option when glibc/eglibc is used, and add an option when the uClibc
 Thomas> library is used. Some similar solution must be found for the
 Thomas> crosstool-NG backend.

Alternatively you can make it depend on !pthreads (ugly because it is so
verbose)

depends on !(BR2_TOOLCHAIN_CTNG_THREADS_NONE ||
         BR2_TOOLCHAIN_CTNG_THREADS_PTHREADS ||
         BR2_TOOLCHAIN_CTNG_THREADS_PTHREADS_OLD ||
         BR2_PTHREADS_NONE || BR2_PTHREADS || BR2_PTHREADS_OLD)

-- 
Bye, Peter Korsgaard