squashfs-tools: bring back package

Picked up the old Makefile at 4.2.
Upgraded at 4.3 (repo move to github now: https://github.com/plougher/squashfs-tools/)
Added musl compatibility.
Enabled LZ4 compression support by default

Signed-off-by: Alexandru Ardelean <ardeleanalex@gmail.com>

utils/squashfs-tools/Makefile

@@ -0,0 +1,86 @@
+# 
+# Copyright (C) 2016 OpenWrt.org
+#
+# This is free software, licensed under the GNU General Public License v2.
+# See /LICENSE for more information.
+#
+
+include $(TOPDIR)/rules.mk
+
+PKG_NAME:=squashfs-tools
+PKG_VERSION:=4.3
+PKG_RELEASE:=1
+PKG_LICENSE:=GPL-2.0
+PKG_LICENSE_FILES:=COPYING
+
+PKG_SOURCE_PROTO:=git
+PKG_SOURCE_URL:=https://github.com/plougher/squashfs-tools
+PKG_SOURCE_SUBDIR:=$(PKG_NAME)-$(PKG_VERSION)
+PKG_SOURCE_VERSION:=9c1db6d13a51a2e009f0027ef336ce03624eac0d
+PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION)-$(PKG_SOURCE_VERSION).tar.gz
+
+PKG_BUILD_PARALLEL:=1
+include $(INCLUDE_DIR)/package.mk
+
+define Package/squashfs-tools/Default
+  SECTION:=utils
+  CATEGORY:=Utilities
+  TITLE:=squashfs-tools
+  URL:=https://github.com/plougher/squashfs-tools
+  DEPENDS += +libpthread +zlib \
+	+SQUASHFS_TOOLS_LZO_SUPPORT:liblzo \
+	+SQUASHFS_TOOLS_LZ4_SUPPORT:liblz4 \
+	+SQUASHFS_TOOLS_XZ_SUPPORT:liblzma
+  MAINTAINER:=Alexandru Ardelean <ardeleanalex@gmail.com>
+endef
+
+define Package/squashfs-tools-mksquashfs
+  $(call Package/squashfs-tools/Default)
+  TITLE+= mksquashfs
+endef
+
+define Package/squashfs-tools-unsquashfs
+  $(call Package/squashfs-tools/Default)
+  TITLE+= unsquashfs
+endef
+
+define Package/squashfs-tools-unsquashfs/config
+	source "$(SOURCE)/Config.in"
+endef
+
+Build/Configure:=
+
+MAKE_FLAGS += \
+	XATTR_SUPPORT=
+
+ifneq ($(CONFIG_SQUASHFS_TOOLS_XZ_SUPPORT),)
+MAKE_FLAGS += XZ_SUPPORT=1
+endif
+
+ifneq ($(CONFIG_SQUASHFS_TOOLS_LZO_SUPPORT),)
+MAKE_FLAGS += LZO_SUPPORT=1
+endif
+
+ifneq ($(CONFIG_SQUASHFS_TOOLS_LZ4_SUPPORT),)
+MAKE_FLAGS += LZ4_SUPPORT=1
+endif
+
+define Build/Compile
+	$(MAKE) -C $(PKG_BUILD_DIR)/squashfs-tools \
+		CC="$(TARGET_CC)" \
+		$(MAKE_FLAGS) \
+		mksquashfs unsquashfs
+endef
+
+define Package/squashfs-tools-mksquashfs/install
+	$(INSTALL_DIR) $(1)/usr/sbin
+	$(INSTALL_BIN) $(PKG_BUILD_DIR)/squashfs-tools/mksquashfs $(1)/usr/sbin/mksquashfs
+endef
+
+define Package/squashfs-tools-unsquashfs/install
+	$(INSTALL_DIR) $(1)/usr/sbin
+	$(INSTALL_BIN) $(PKG_BUILD_DIR)/squashfs-tools/unsquashfs $(1)/usr/sbin/unsquashfs
+endef
+
+$(eval $(call BuildPackage,squashfs-tools-mksquashfs))
+$(eval $(call BuildPackage,squashfs-tools-unsquashfs))