zstd: add zstd package

Zstandard, or zstd as short version, is a fast lossless compression
algorithm, targeting real-time compression scenarios at zlib-level and
better compression ratios.

This package includes a C library, and a command line utility producing
and decoding .zst, .gz, .xz and .lz4 files.

Signed-off-by: Amol Bhave <ambhave@fb.com>

utils/zstd/Makefile

@@ -0,0 +1,81 @@
+include $(TOPDIR)/rules.mk
+
+PKG_NAME:=zstd
+PKG_VERSION:=1.3.8
+PKG_RELEASE:=1
+
+PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
+PKG_SOURCE_URL:=https://codeload.github.com/facebook/zstd/tar.gz/v$(PKG_VERSION)?
+PKG_HASH:=90d902a1282cc4e197a8023b6d6e8d331c1fd1dfe60f7f8e4ee9da40da886dc3
+
+PKG_LICENSE:=GPL-2.0-or-later
+PKG_LICENSE_FILE:=COPYING
+
+include $(INCLUDE_DIR)/package.mk
+include $(INCLUDE_DIR)/host-build.mk
+include $(INCLUDE_DIR)/cmake.mk
+
+PKG_BUILD_PARALLEL:=1
+HOST_BUILD_PARALLEL:=1
+CMAKE_SOURCE_SUBDIR:=build/cmake
+CMAKE_INSTALL:=1
+
+ifeq ($(CONFIG_ZSTD_OPTIMIZE_O3),y)
+	TARGET_CFLAGS := $(filter-out -O%,$(TARGET_CFLAGS))
+	TARGET_CFLAGS += -O3
+	TARGET_CXXFLAGS := $(filter-out -O%,$(TARGET_CXXFLAGS))
+	TARGET_CXXFLAGS += -O3
+endif
+
+define Package/zstd/Default
+	SUBMENU:=Compression
+	URL:=https://github.com/facebook/zstd
+	MAINTAINER:=Amol Bhave <ambhave@fb.com>
+endef
+
+define Package/libzstd
+$(call Package/zstd/Default)
+	SECTION:=libs
+	CATEGORY:=Libraries
+	TITLE:=zstd library.
+endef
+
+define Package/libzstd/description
+	Zstandard - Fast real-time compression algorithm.
+	This package provides libzstd library.
+endef
+
+define Package/libzstd/config
+	config ZSTD_OPTIMIZE_O3
+		bool "Use all optimizations (-O3)"
+		default y
+		help
+			This enables additional optmizations using the -O3 compilation flag.
+endef
+
+define Package/zstd
+$(call Package/zstd/Default)
+	SECTION:=utils
+	CATEGORY:=Utilities
+	DEPENDS:=+libzstd
+	TITLE:=Fast real-time compression algorithm.
+endef
+
+define Package/zstd/description
+	Zstandard - Fast real-time compression algorithm.
+	This package provides the zstd binaries.
+endef
+
+define Package/libzstd/install
+	$(INSTALL_DIR) $(1)/usr/lib
+	$(INSTALL_DATA) $(PKG_INSTALL_DIR)/usr/lib/libzstd.so* $(1)/usr/lib/
+endef
+
+define Package/zstd/install
+	$(INSTALL_DIR) $(1)/usr/bin
+	$(INSTALL_BIN) $(PKG_INSTALL_DIR)/usr/bin/{unzstd,zstd,zstdcat,zstdmt} $(1)/usr/bin/
+endef
+
+$(eval $(call BuildPackage,libzstd))
+$(eval $(call BuildPackage,zstd))
+$(eval $(call HostBuild))