initial buildroot for linux 5.15

package/bmon/Config.in

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+config BR2_PACKAGE_BMON
+	bool "bmon"
+	depends on BR2_TOOLCHAIN_HAS_THREADS # libnl
+	select BR2_PACKAGE_LIBCONFUSE
+	select BR2_PACKAGE_LIBNL
+	select BR2_PACKAGE_NCURSES
+	help
+	  bmon is a bandwidth monitor capable of retrieving statistics
+	  from various input modules. It provides various output methods
+	  including a curses based interface.
+
+	  https://github.com/tgraf/bmon/
+
+comment "bmon needs a toolchain w/ threads"
+	depends on !BR2_TOOLCHAIN_HAS_THREADS

package/bmon/bmon.hash

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+# Locally calculated
+sha256  02fdc312b8ceeb5786b28bf905f54328f414040ff42f45c83007f24b76cc9f7a  bmon-4.0.tar.gz
+sha256  59ae3d59c672bfb955917a8e32f5cacba7f8ce716c499a4c63dc8cd8cb5c4991  LICENSE.BSD
+sha256  a2a6760c2c6fa779a635e4a7ad00f668862ebcadb2a8a57d16662543e103e08c  LICENSE.MIT

package/bmon/bmon.mk

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+################################################################################
+#
+# bmon
+#
+################################################################################
+
+BMON_VERSION = 4.0
+BMON_SITE = https://github.com/tgraf/bmon/releases/download/v$(BMON_VERSION)
+BMON_DEPENDENCIES = host-pkgconf libconfuse libnl ncurses
+BMON_CONF_ENV = ac_cv_prog_cc_c99='-std=gnu99'
+BMON_LICENSE = BSD-2-Clause, MIT
+BMON_LICENSE_FILES = LICENSE.BSD LICENSE.MIT
+
+# link dynamically unless explicitly requested otherwise
+ifeq ($(BR2_STATIC_LIBS),)
+BMON_CONF_OPTS += --disable-static
+else
+# forgets to explicitly link with pthread for libnl
+BMON_CONF_OPTS += LIBS=-lpthread
+endif
+
+$(eval $(autotools-package))