initial buildroot for linux 5.15

package/lzip/Config.in

@@ -0,0 +1,15 @@
+comment "lzip needs a toolchain w/ C++"
+	depends on !BR2_INSTALL_LIBSTDCPP
+
+config BR2_PACKAGE_LZIP
+	bool "lzip"
+	depends on BR2_INSTALL_LIBSTDCPP
+	help
+	  Lzip is a lossless data compressor with a user interface
+	  similar to the one of gzip or bzip2.
+	  Lzip is about as fast as gzip, compresses most files more than
+	  bzip2, and is better than both from a data recovery
+	  perspective. Lzip is a clean implementation of the LZMA
+	  algorithm.
+
+	  https://www.nongnu.org/lzip/lzip.html

package/lzip/lzip.hash

@@ -0,0 +1,4 @@
+# From https://lists.nongnu.org/archive/html/lzip-bug/2021-01/msg00008.html
+sha256  c3342d42e67139c165b8b128d033b5c96893a13ac5f25933190315214e87a948  lzip-1.22.tar.gz
+# Locally calculated
+sha256  3d77c1a58fbde5ddba612d1fe09965e20a3804953eca12e8c1892298bb8a5eef  COPYING

package/lzip/lzip.mk

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+################################################################################
+#
+# lzip
+#
+################################################################################
+
+LZIP_VERSION = 1.22
+LZIP_SITE = http://download.savannah.gnu.org/releases/lzip
+LZIP_LICENSE = GPL-2.0+
+LZIP_LICENSE_FILES = COPYING
+
+define LZIP_CONFIGURE_CMDS
+	(cd $(@D); $(TARGET_MAKE_ENV) ./configure --prefix=/usr \
+		$(TARGET_CONFIGURE_OPTS) )
+endef
+
+define HOST_LZIP_CONFIGURE_CMDS
+	(cd $(@D); $(HOST_MAKE_ENV) ./configure --prefix=$(HOST_DIR) \
+		$(HOST_CONFIGURE_OPTS) CC="$(HOSTCC_NOCCACHE)" CXX="$(HOSTCXX_NOCCACHE)")
+endef
+
+define LZIP_BUILD_CMDS
+	$(TARGET_MAKE_ENV) $(MAKE) -C $(@D)
+endef
+
+define HOST_LZIP_BUILD_CMDS
+	$(HOST_MAKE_ENV) $(MAKE) -C $(@D)
+endef
+
+define LZIP_INSTALL_TARGET_CMDS
+	$(TARGET_MAKE_ENV) $(MAKE) -C $(@D) DESTDIR=$(TARGET_DIR) install
+endef
+
+define HOST_LZIP_INSTALL_CMDS
+	$(HOST_MAKE_ENV) $(MAKE) -C $(@D) install
+endef
+
+# It's not autotools-based
+$(eval $(generic-package))
+$(eval $(host-generic-package))