initial buildroot for linux 5.15

package/v4l2grab/Config.in

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+config BR2_PACKAGE_V4L2GRAB
+	bool "v4l2grab"
+	depends on BR2_TOOLCHAIN_HAS_THREADS # libv4l
+	depends on BR2_USE_MMU # libv4l
+	depends on !BR2_STATIC_LIBS # libv4l
+	depends on BR2_INSTALL_LIBSTDCPP # libv4l
+	depends on BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_0 # libv4l
+	select BR2_PACKAGE_JPEG
+	select BR2_PACKAGE_LIBV4L
+	help
+	  Utility for grabbing JPEGs form V4L2 devices. This tool is
+	  similar to v4l2grab available from libv4l contrib directory,
+	  but provides additional features such as JPEG output.
+
+	  http://www.twam.info/software/v4l2grab-grabbing-jpegs-from-v4l2-devices
+
+comment "v4l2grab needs a toolchain w/ threads, dynamic library, C++ and headers >= 3.0"
+	depends on BR2_USE_MMU
+	depends on !BR2_TOOLCHAIN_HAS_THREADS || BR2_STATIC_LIBS \
+		|| !BR2_INSTALL_LIBSTDCPP || !BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_0

package/v4l2grab/v4l2grab.hash

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+# Locally calculated
+sha256  9a8d0d1ca5ac9fb9f66e00300bb3265d156cf1cb67eb30f6e6637c83b0b507a1  v4l2grab-f8d8844d52387b3db7b8736f5e86156d9374f781.tar.gz
+sha256  7fa0d45fe86fda646fada21ecfa7672e951b01c521aecd358f586facd65fb5b3  LICENSE.md

package/v4l2grab/v4l2grab.mk

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+################################################################################
+#
+# v4l2grab
+#
+################################################################################
+
+V4L2GRAB_VERSION = f8d8844d52387b3db7b8736f5e86156d9374f781
+V4L2GRAB_SITE = $(call github,twam,v4l2grab,$(V4L2GRAB_VERSION))
+V4L2GRAB_LICENSE = GPL-2.0+
+V4L2GRAB_LICENSE_FILES = LICENSE.md
+# Fetched from github, no pre-generated configure script provided
+V4L2GRAB_AUTORECONF = YES
+V4L2GRAB_DEPENDENCIES = jpeg libv4l
+
+$(eval $(autotools-package))