initial buildroot for linux 5.15

package/dawgdic/Config.in

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+config BR2_PACKAGE_DAWGDIC
+	bool "dawgdic"
+	depends on BR2_INSTALL_LIBSTDCPP
+	# needs std::strtoll
+	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_6
+	help
+	  dawgdic provides a library for building and accessing
+	  dictionaries implemented with directed acyclic word graphs
+	  (DAWG). A dawg is constructed by minimizing a trie as a
+	  deterministic finite automaton (DFA), and thus the dawg has
+	  an advantage in memory usage. In addition, dawgdic uses a
+	  double-array as a base data structure, so its retrieval
+	  speed is as fast as that of Darts, a library for building
+	  and accessing double-array tries.
+
+	  https://github.com/stil/dawgdic
+
+comment "dawgdic needs a toolchain w/ C++, gcc >= 4.6"
+	depends on !BR2_INSTALL_LIBSTDCPP || !BR2_TOOLCHAIN_GCC_AT_LEAST_4_6

package/dawgdic/dawgdic.hash

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+# Locally calculated
+sha256  54622a3e79ff3ad2c01a830ec52b997b42ead468b18af5acebab3a4ff32a5ad6  dawgdic-16ac537ba9883ff01b63b6d1fdc3072150c68fee.tar.gz
+sha256  3059f68686f1c5bc6ed0e9db415fc257c4e7618b6ac58ecce83986eb8a7cf501  COPYING

package/dawgdic/dawgdic.mk

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+################################################################################
+#
+# dawgdic
+#
+################################################################################
+
+DAWGDIC_VERSION = 16ac537ba9883ff01b63b6d1fdc3072150c68fee
+DAWGDIC_SITE = $(call github,stil,dawgdic,$(DAWGDIC_VERSION))
+DAWGDIC_LICENSE = BSD-3-Clause
+DAWGDIC_LICENSE_FILES = COPYING
+DAWGDIC_AUTORECONF = YES
+DAWGDIC_INSTALL_STAGING = YES
+
+$(eval $(autotools-package))