4ed540ddf5
Since its introduction in commit
b05e74ff92 in 2013, numactl has had an
explicit list of architectures that it supports. Interestingly, this
list does not include ARM, and now that rt-tests unconditionally needs
numactl, it meant the rt-tests package was no longer available on ARM.
Further investigation revealed that there is nothing in recent
versions of numactl that appears to be architecture-specific. It does
build with all of Buildroot toolchains currently used in the
autobuilders.
The only necessary changes are:
* Exclude no-MMU architectures, as madvise() is used in the code
base, and this is not available on no-MMU architectures.
* Make sure to use -latomic when needed, as some atomic operations
are used.
* Backport a patch that fixes the .symver usage, which only affects
really old gcc versions: only the old ARM Sourcery toolchain was
affected by this. Newer gcc versions support the gcc "symver"
attribute, so that the code that directly emits the assembly
.symver directive is not invoked.
With these changes, numactl builds successfully on all our supported
toolchains.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
36 lines
1.5 KiB
Plaintext
36 lines
1.5 KiB
Plaintext
config BR2_PACKAGE_RT_TESTS
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bool "rt-tests"
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depends on BR2_TOOLCHAIN_HAS_THREADS_NPTL
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depends on BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_14 # deadline scheduler syscall
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depends on BR2_USE_MMU # fork(), numactl
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depends on !BR2_STATIC_LIBS # dlopen
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depends on !BR2_TOOLCHAIN_USES_MUSL # cyclictest
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select BR2_PACKAGE_NUMACTL
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help
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Set of utilities for testing the real-time behaviour of a
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Linux system.
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All tools are simple C programs with no dependencies, except
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the hwlatdetect utility, which is a Python script and
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therefore requires the Python interpreter. It will only be
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installed if a Python interpreter has been selected in the
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Buildroot configuration.
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Note that this package requires a toolchain built with the
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NPTL implementation of the pthread API (this is always the
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case with glibc toolchains, but may not necessarily be the
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case with uClibc toolchains, since the thread implementation
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is configurable).
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https://wiki.linuxfoundation.org/realtime/documentation/howto/tools/rt-tests
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comment "rt-tests may not work on MIPS with an external uClibc toolchain"
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depends on BR2_PACKAGE_RT_TESTS
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depends on BR2_TOOLCHAIN_EXTERNAL_UCLIBC
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depends on BR2_mips || BR2_mipsel || BR2_mips64 || BR2_mips64el
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comment "rt-tests needs a uClibc or glibc toolchain w/ NPTL, headers >= 3.14, dynamic library"
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depends on !BR2_TOOLCHAIN_HAS_THREADS_NPTL || BR2_STATIC_LIBS \
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|| BR2_TOOLCHAIN_USES_MUSL || !BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_14
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depends on BR2_USE_MMU
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