initial buildroot for linux 5.15

package/cannelloni/Config.in

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+config BR2_PACKAGE_CANNELLONI
+	bool "cannelloni"
+	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_8 # C++11
+	depends on BR2_INSTALL_LIBSTDCPP
+	depends on BR2_USE_MMU # lksctp-tools
+	depends on BR2_TOOLCHAIN_HAS_THREADS # lksctp-tools
+	depends on !BR2_STATIC_LIBS # lksctp-tools
+	help
+	  A SocketCAN over Ethernet tunnel. The tunnel supports both
+	  UDP and SCTP protocols.
+
+	  https://github.com/mguentner/cannelloni
+
+comment "cannelloni needs a toolchain w/ C++, threads, dynamic library, gcc >= 4.8"
+	depends on !BR2_INSTALL_LIBSTDCPP || BR2_STATIC_LIBS || \
+		!BR2_TOOLCHAIN_GCC_AT_LEAST_4_8 || !BR2_TOOLCHAIN_HAS_THREADS
+	depends on BR2_USE_MMU

package/cannelloni/cannelloni.hash

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+# Locally computed
+sha256  de44b7e327fbf38883f46e51a5afd07de5144f2e44c5f42b7f2f0741165f0b13  cannelloni-1.0.0.tar.gz
+sha256  8177f97513213526df2cf6184d8ff986c675afb514d4e68a404010521b880643  gpl-2.0.txt

package/cannelloni/cannelloni.mk

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+################################################################################
+#
+# cannelloni
+#
+################################################################################
+
+CANNELLONI_VERSION = 1.0.0
+CANNELLONI_SITE = $(call github,mguentner,cannelloni,v$(CANNELLONI_VERSION))
+CANNELLONI_LICENSE = GPL-2.0
+CANNELLONI_LICENSE_FILES = gpl-2.0.txt
+CANNELLONI_CONF_OPTS = -DCMAKE_CXX_FLAGS="-std=c++11"
+
+ifeq ($(BR2_PACKAGE_LKSCTP_TOOLS),y)
+CANNELLONI_CONF_OPTS += -DSCTP_SUPPORT=ON
+CANNELLONI_DEPENDENCIES += lksctp-tools
+else
+CANNELLONI_CONF_OPTS += -DSCTP_SUPPORT=OFF
+endif
+
+$(eval $(cmake-package))