buildroot

config BR2_PACKAGE_OPROFILE

    bool "oprofile"

    depends on BR2_USE_MMU # fork()

    select BR2_PACKAGE_POPT

    select BR2_PACKAGE_BINUTILS

    select BR2_PACKAGE_LIBPFM4 if BR2_powerpc

    depends on BR2_INSTALL_LIBSTDCPP

    depends on !BR2_aarch64 && !BR2_nios2 # binutils

    depends on BR2_USE_WCHAR # binutils

    depends on !BR2_xtensa

    # libpfm4 is needed on PowerPC, and requires thread support

    depends on BR2_TOOLCHAIN_HAS_THREADS_NPTL || !BR2_powerpc

    help

      OProfile is a system-wide profiler for Linux systems,

      capable of profiling all running code at low overhead.

      OProfile is released under the GNU GPL.

​

      It consists of a kernel driver and a daemon for collecting

      sample data, and several post-profiling tools for turning

      data into information.

​

      OProfile leverages the hardware performance counters of the

      CPU to enable profiling of a wide variety of interesting

      statistics, which can also be used for basic time-spent

      profiling. All code is profiled: hardware and software

      interrupt handlers, kernel modules, the kernel, shared

      libraries, and applications.

​

comment "oprofile needs a toolchain w/ C++, wchar"

    depends on BR2_USE_MMU

    depends on !BR2_aarch64 && !BR2_nios2 && !BR2_xtensa

    depends on !BR2_INSTALL_LIBSTDCPP || !BR2_USE_WCHAR

​

comment "oprofile needs a toolchain w/ NPTL on PPC"

    depends on BR2_USE_MMU && BR2_powerpc

    depends on !BR2_TOOLCHAIN_HAS_THREADS_NPTL