buildroot/package/libunwind/Config.in
Thomas Petazzoni fcfdd8a80d package/libunwind: enable on AArch64
Since version 1.2, libunwind has support for the AArch64 architecture.

It builds fine on glibc, needs a small patch on musl, but doesn't
build with uClibc (stack_t undefined).

Fixes:

  https://bugs.busybox.net/show_bug.cgi?id=12836

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
2020-05-16 15:41:21 +02:00

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# libunwind is only available for a certain subset of the
# architectures (as visible in the list of architectures supported
# with the glibc C library below).
#
# In addition to this, on some architectures libunwind requires the
# *context() function from the C library, which are only available on
# certain architectures in uClibc, and not available at all on
# musl. But on some other architectures, libunwind works without using
# the *context() functions, which allows it to be built with musl.
config BR2_PACKAGE_LIBUNWIND_ARCH_SUPPORTS
bool
default y if BR2_TOOLCHAIN_USES_GLIBC && \
(BR2_ARM_CPU_HAS_ARM || BR2_aarch64 || BR2_mips || BR2_mipsel || \
BR2_mips64 || BR2_mips64el || BR2_powerpc || BR2_sh || \
BR2_i386 || BR2_x86_64)
default y if BR2_TOOLCHAIN_USES_UCLIBC && \
(BR2_ARM_CPU_HAS_ARM || BR2_mips || BR2_mipsel || \
BR2_mips64 || BR2_mips64el || BR2_x86_64)
default y if BR2_TOOLCHAIN_USES_MUSL && \
(BR2_ARM_CPU_HAS_ARM || BR2_aarch64 || BR2_x86_64)
config BR2_PACKAGE_LIBUNWIND
bool "libunwind"
depends on BR2_TOOLCHAIN_HAS_THREADS
depends on BR2_PACKAGE_LIBUNWIND_ARCH_SUPPORTS
# forcefully links against libgcc_s, only available in dynamic
# linking configurations
depends on !BR2_STATIC_LIBS
help
C API to determine the call-chain of a program.
http://www.nongnu.org/libunwind/index.html
comment "libunwind needs a toolchain w/ threads, dynamic library"
depends on BR2_PACKAGE_LIBUNWIND_ARCH_SUPPORTS
depends on !BR2_TOOLCHAIN_HAS_THREADS || BR2_STATIC_LIBS