1config BR2_PACKAGE_LIBURCU_ARCH_SUPPORTS 2 bool 3 default y 4 depends on BR2_arm || BR2_armeb || BR2_aarch64 || BR2_aarch64_be || \ 5 BR2_i386 || BR2_mips || BR2_mips64 || BR2_mipsel || \ 6 BR2_mips64el || BR2_nios2 || BR2_powerpc || BR2_powerpc64 || \ 7 BR2_powerpc64le || BR2_riscv || BR2_sparc64 || BR2_s390x || BR2_x86_64 8 depends on BR2_USE_MMU # fork() in test 9 10config BR2_PACKAGE_LIBURCU 11 bool "liburcu" 12 depends on BR2_PACKAGE_LIBURCU_ARCH_SUPPORTS 13 depends on BR2_TOOLCHAIN_HAS_THREADS 14 help 15 Userspace implementation of the Read-Copy-Update (RCU) 16 synchronization mechanism. This library is mainly used by 17 the LTTng tracing infrastructure, but can be used for other 18 purposes as well. 19 20 On ARM, because of bug: 21 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58854 22 liburcu cannot be built using gcc 4.8.0, 4.8.1 or 4.8.2 23 without the following bug fix: 24 http://gcc.gnu.org/viewcvs/gcc?view=revision&revision=204665 25 26 http://lttng.org/urcu 27 28comment "liburcu needs a toolchain w/ threads" 29 depends on BR2_PACKAGE_LIBURCU_ARCH_SUPPORTS 30 depends on !BR2_TOOLCHAIN_HAS_THREADS 31