initial buildroot for linux 5.15

package/s6-portable-utils/Config.in

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+config BR2_PACKAGE_S6_PORTABLE_UTILS
+	bool "s6-portable-utils"
+	depends on BR2_USE_MMU # skalibs
+	select BR2_PACKAGE_SKALIBS
+	help
+	  s6-portable-utils is a set of tiny general Unix utilities,
+	  often performing well-known tasks such as cut and grep, but
+	  optimized for simplicity and small size. They were designed
+	  for embedded systems and other constrained environments, but
+	  they work everywhere.
+
+	  http://skarnet.org/software/s6-portable-utils/

package/s6-portable-utils/s6-portable-utils.hash

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+# Locally generated
+sha256  6627a2d3ea263539e83512a36f10a587fa0dd5e899bc3612187e9e3b9faf769c  s6-portable-utils-2.2.3.2.tar.gz
+sha256  adecb8bedfaae27fcfe65ecb3ef0e2e71aa2a2b49dc21886a200bc677d93e6ec  COPYING

package/s6-portable-utils/s6-portable-utils.mk

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+################################################################################
+#
+# s6-portable-utils
+#
+################################################################################
+
+S6_PORTABLE_UTILS_VERSION = 2.2.3.2
+S6_PORTABLE_UTILS_SITE = http://skarnet.org/software/s6-portable-utils
+S6_PORTABLE_UTILS_LICENSE = ISC
+S6_PORTABLE_UTILS_LICENSE_FILES = COPYING
+S6_PORTABLE_UTILS_DEPENDENCIES = skalibs
+
+S6_PORTABLE_UTILS_CONF_OPTS = \
+	--prefix=/ \
+	--with-sysdeps=$(STAGING_DIR)/lib/skalibs/sysdeps \
+	--with-include=$(STAGING_DIR)/include \
+	--with-dynlib=$(STAGING_DIR)/lib \
+	--with-lib=$(STAGING_DIR)/lib/skalibs \
+	$(if $(BR2_STATIC_LIBS),,--disable-allstatic) \
+	$(SHARED_STATIC_LIBS_OPTS)
+
+define S6_PORTABLE_UTILS_CONFIGURE_CMDS
+	(cd $(@D); $(TARGET_CONFIGURE_OPTS) ./configure $(S6_PORTABLE_UTILS_CONF_OPTS))
+endef
+
+define S6_PORTABLE_UTILS_BUILD_CMDS
+	$(TARGET_MAKE_ENV) $(MAKE) -C $(@D)
+endef
+
+define S6_PORTABLE_UTILS_INSTALL_TARGET_CMDS
+	$(TARGET_MAKE_ENV) $(MAKE) -C $(@D) DESTDIR=$(TARGET_DIR) install
+endef
+
+$(eval $(generic-package))