initial buildroot for linux 5.15

package/tini/Config.in

@@ -0,0 +1,17 @@
+config BR2_PACKAGE_TINI
+	bool "tini"
+	depends on BR2_USE_MMU # fork()
+	help
+	  tini is a simple but valid init binary to
+	  act as PID 1 for containers.
+
+	  https://github.com/krallin/tini
+
+if BR2_PACKAGE_TINI
+
+config BR2_PACKAGE_TINI_MINIMAL
+	bool "build minimal variant"
+	help
+	  Disables argument parsing and verbose output.
+
+endif

package/tini/tini.hash

@@ -0,0 +1,3 @@
+# Locally computed
+sha256  e5f46bca81266bdd511cf08018d66866870531794569c04f9b45f50dd23c28b0  LICENSE
+sha256  0fd35a7030052acd9f58948d1d900fe1e432ee37103c5561554408bdac6bbf0d  tini-0.19.0.tar.gz

package/tini/tini.mk

@@ -0,0 +1,38 @@
+################################################################################
+#
+# tini
+#
+################################################################################
+
+TINI_VERSION = 0.19.0
+TINI_SITE = $(call github,krallin,tini,v$(TINI_VERSION))
+TINI_LICENSE = MIT
+TINI_LICENSE_FILES = LICENSE
+TINI_CPE_ID_VENDOR = tini_project
+
+TINI_CFLAGS = $(TARGET_CFLAGS) \
+	-static \
+	-DTINI_VERSION=\"$(TINI_VERSION)\" \
+	-DTINI_GIT=\"\"
+
+ifeq ($(BR2_PACKAGE_TINI_MINIMAL),y)
+TINI_CFLAGS += -DTINI_MINIMAL
+endif
+
+define TINI_CONFIGURE_CMDS
+	printf "#pragma once\n" > $(@D)/src/tiniConfig.h
+endef
+
+define TINI_BUILD_CMDS
+	mkdir -p $(@D)/bin
+	$(TARGET_CC) $(TINI_CFLAGS) \
+		-o $(@D)/bin/tini $(@D)/src/tini.c
+endef
+
+define TINI_INSTALL_TARGET_CMDS
+	$(INSTALL) -D -m 0755 $(@D)/bin/tini $(TARGET_DIR)/usr/bin/tini
+	ln -sf tini $(TARGET_DIR)/usr/bin/docker-init
+endef
+
+# Tini's CMakeLists.txt is not suitable for Buildroot.
+$(eval $(generic-package))