package/rt-tests: disable for too old toolchains

rt-tests doesn't build with some "old" toolchains due to missing local
syscall number definition for the new kernel deadline scheduler on some
architectures. Upsteam added __NR_sched_setattr and __NR_sched_setattr
definition only for common architectures (x86, x86_64, arm) and tile if
not already defined [1].

Instead of adding missing syscall number, avoid building rt-tests
with toolchain compiled with too old kernel headers (i.e
!BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_14)

At runtime, a 3.14 kernel must be used otherwise these syscall are not
available.

[1]
https://kernel.googlesource.com/pub/scm/utils/rt-tests/rt-tests.git/+/ef2dee4232b7cae594ef7ecb7230c4bd18cea3f3

Fixes:
http://autobuild.buildroot.net/results/6fa/6facaeb10588bdf3ff029b882a8ae6ffba815cdc

Signed-off-by: Romain Naour <romain.naour@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

diff --git a/package/rt-tests/Config.in b/package/rt-tests/Config.in
index 08967ce82257c7be4f1ca9df6e247ca86ae81568..b39856d34f5f1fb26ae326a8a58dc959b6262987 100644 (file)
--- a/package/rt-tests/Config.in
+++ b/package/rt-tests/Config.in
@@ -1,6 +1,7 @@
 config BR2_PACKAGE_RT_TESTS
        bool "rt-tests"
        depends on BR2_TOOLCHAIN_HAS_THREADS_NPTL
+       depends on BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_14 # deadline scheduler syscall
        depends on BR2_USE_MMU # fork()
        depends on !BR2_STATIC_LIBS # dlopen
        depends on !BR2_TOOLCHAIN_USES_MUSL # cyclictest
@@ -28,7 +29,7 @@ comment "rt-tests may not work on MIPS with an external uClibc toolchain"
        depends on BR2_TOOLCHAIN_EXTERNAL_UCLIBC
        depends on BR2_mips || BR2_mipsel || BR2_mips64 || BR2_mips64el
 
-comment "rt-tests needs a uClibc or glibc toolchain w/ NPTL, dynamic library"
+comment "rt-tests needs a uClibc or glibc toolchain w/ NPTL, headers >= 3.14, dynamic library"
        depends on !BR2_TOOLCHAIN_HAS_THREADS_NPTL || BR2_STATIC_LIBS \
-               || BR2_TOOLCHAIN_USES_MUSL
+               || BR2_TOOLCHAIN_USES_MUSL || !BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_14
        depends on BR2_USE_MMU