# openal can:
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# - use __atomic_*() intrinsics when available
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# - otherwise use __sync_*() intrinsics when available. It needs the
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# 4-byte ones on 32 bits architectures, and the 4-byte and 8-byte
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# one on 64 bits architecture
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# - it also provides its one implementation of atomic operations on
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# x86 and x86_64, but we dont take those into account since in most
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# situations __atomic_*() or __sync_*() will be available, and not
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# all x86 CPUs provide the necessary assembly instructions.
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config BR2_PACKAGE_OPENAL_ARCH_SUPPORTS
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bool
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default y if BR2_TOOLCHAIN_HAS_ATOMIC
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default y if BR2_TOOLCHAIN_HAS_SYNC_4 && !BR2_ARCH_IS_64
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default y if BR2_TOOLCHAIN_HAS_SYNC_4 && BR2_TOOLCHAIN_HAS_SYNC_8 && BR2_ARCH_IS_64
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config BR2_PACKAGE_OPENAL
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bool "openal"
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depends on BR2_INSTALL_LIBSTDCPP
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depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_9 # C++11 PR56019
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depends on BR2_TOOLCHAIN_HAS_THREADS_NPTL
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depends on BR2_PACKAGE_OPENAL_ARCH_SUPPORTS
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help
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OpenAL provides capabilities for playing audio in a virtual
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3D environment. Distance attenuation, doppler shift, and
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directional sound emitters are among the features handled by
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the API.
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http://kcat.strangesoft.net/openal.html
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comment "openal needs a toolchain w/ NPTL, C++, gcc >= 4.9"
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depends on BR2_PACKAGE_OPENAL_ARCH_SUPPORTS
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depends on !BR2_TOOLCHAIN_HAS_THREADS_NPTL \
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|| !BR2_INSTALL_LIBSTDCPP \
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|| !BR2_TOOLCHAIN_GCC_AT_LEAST_4_9
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