67d87bf7d2
This also removes an old patch to fix atomic_ops for ARM pre-ARMv6. atomic_ops support has been replaced with C11 atomics, so the patch did not apply anymore, and should be unnecessary. This does mean compilation will fail with systems that don't support C11 atomics, i.e. GCC versions older than 4.9 Signed-off-by: Frederik Van Bogaert <frederik.vanbogaert@mind.be> Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
39 lines
1.6 KiB
Plaintext
39 lines
1.6 KiB
Plaintext
# libunwind is only available for a certain subset of the
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# architectures (as visible in the list of architectures supported
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# with the glibc C library below).
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#
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# In addition to this, on some architectures libunwind requires the
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# *context() function from the C library, which are only available on
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# certain architectures in uClibc, and not available at all on
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# musl. But on some other architectures, libunwind works without using
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# the *context() functions, which allows it to be built with musl.
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config BR2_PACKAGE_LIBUNWIND_ARCH_SUPPORTS
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bool
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default y if BR2_TOOLCHAIN_USES_GLIBC && \
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(BR2_ARM_CPU_HAS_ARM || BR2_aarch64 || BR2_mips || BR2_mipsel || \
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BR2_mips64 || BR2_mips64el || BR2_powerpc || BR2_sh || \
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BR2_i386 || BR2_x86_64)
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default y if BR2_TOOLCHAIN_USES_UCLIBC && \
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(BR2_ARM_CPU_HAS_ARM || BR2_mips || BR2_mipsel || \
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BR2_mips64 || BR2_mips64el || BR2_x86_64)
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default y if BR2_TOOLCHAIN_USES_MUSL && \
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(BR2_ARM_CPU_HAS_ARM || BR2_aarch64 || BR2_x86_64)
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config BR2_PACKAGE_LIBUNWIND
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bool "libunwind"
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depends on BR2_TOOLCHAIN_HAS_THREADS
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depends on BR2_PACKAGE_LIBUNWIND_ARCH_SUPPORTS
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depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_9 # C11 atomics
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# forcefully links against libgcc_s, only available in dynamic
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# linking configurations
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depends on !BR2_STATIC_LIBS
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help
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C API to determine the call-chain of a program.
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http://www.nongnu.org/libunwind/index.html
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comment "libunwind needs a toolchain w/ threads, dynamic library, gcc >= 4.9"
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depends on BR2_PACKAGE_LIBUNWIND_ARCH_SUPPORTS
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depends on !BR2_TOOLCHAIN_HAS_THREADS || BR2_STATIC_LIBS || \
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!BR2_TOOLCHAIN_GCC_AT_LEAST_4_9
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