config BR2_PACKAGE_LIBRTLSDR
	bool "librtlsdr"
	depends on BR2_TOOLCHAIN_HAS_THREADS
	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_9 # libusb
	select BR2_PACKAGE_LIBUSB
	help
	  Library and command line programs for accessing
	  RTL2832U SDR dongles.

	  http://sdr.osmocom.org/trac/wiki/rtl-sdr/

if BR2_PACKAGE_LIBRTLSDR

config BR2_PACKAGE_LIBRTLSDR_DETACH_DRIVER
	bool "Detach kernel driver"
	default y
	help
	  Enable this option if you would like librtlsdr to
	  automatically detach any kernel driver associated to the
	  RTL2832U USB device on startup if one is loaded.

config BR2_PACKAGE_LIBRTLSDR_ZEROCOPY
	bool "Enable usbfs zero-copy support"
	default y
	help
	  This option allows to use kernel usbfs mmap instead
	  of buffers in userspace. If you experiment crash with
	  kernel < 5.6, disable this option.

endif

comment "librtlsdr needs a toolchain w/ threads, gcc >= 4.9"
	depends on !BR2_TOOLCHAIN_HAS_THREADS || \
		!BR2_TOOLCHAIN_GCC_AT_LEAST_4_9
