zstd: Update to 1.4.1

Decompression speedup of 7% on average.

Remove upstreamed uClibc-ng patch.

Fixed optimization option to show properly under menuconfig.

Added LTO for smaller size.

Signed-off-by: Rosen Penev <rosenp@gmail.com>

utils/zstd/Makefile

@@ -1,12 +1,12 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=zstd
-PKG_VERSION:=1.4.0
-PKG_RELEASE:=4
+PKG_VERSION:=1.4.1
+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:=63be339137d2b683c6d19a9e34f4fb684790e864fee13c7dd40e197a64c705c1
+PKG_HASH:=f91ea3397e6cc65d398e1bc0713cf2f0b0de2fb85ea9dabb1eb3e8f1b22f8d6f
 
 PKG_MAINTAINER:=Amol Bhave <ambhave@fb.com>
 PKG_LICENSE:=GPL-2.0-or-later
@@ -21,13 +21,6 @@ include $(INCLUDE_DIR)/package.mk
 include $(INCLUDE_DIR)/host-build.mk
 include $(INCLUDE_DIR)/cmake.mk
 
-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
@@ -38,6 +31,7 @@ $(call Package/zstd/Default)
 	SECTION:=libs
 	CATEGORY:=Libraries
 	TITLE:=zstd library.
+	MENU:=1
 endef
 
 define Package/libzstd/description
@@ -48,6 +42,7 @@ endef
 define Package/libzstd/config
 	config ZSTD_OPTIMIZE_O3
 		bool "Use all optimizations (-O3)"
+		depends on PACKAGE_libzstd
 		default y
 		help
 			This enables additional optmizations using the -O3 compilation flag.
@@ -66,6 +61,13 @@ define Package/zstd/description
 	This package provides the zstd binaries.
 endef
 
+ifeq ($(CONFIG_ZSTD_OPTIMIZE_O3),y)
+TARGET_CFLAGS:= $(filter-out -O%,$(TARGET_CFLAGS)) -O3
+endif
+
+TARGET_CFLAGS += -flto
+TARGET_LDFLAGS += -Wl,--as-needed
+
 define Package/libzstd/install
 	$(INSTALL_DIR) $(1)/usr/lib
 	$(CP) $(PKG_INSTALL_DIR)/usr/lib/libzstd.so* $(1)/usr/lib/

utils/zstd/patches/010-uClibc-ng.patch

@@ -1,11 +0,0 @@
---- a/programs/fileio.c
-+++ b/programs/fileio.c
-@@ -175,7 +175,7 @@ static void clearHandler(void)
- 
- #if !defined(BACKTRACE_ENABLE)
- /* automatic detector : backtrace enabled by default on linux+glibc and osx */
--#  if (defined(__linux__) && defined(__GLIBC__)) \
-+#  if (defined(__linux__) && (defined(__GLIBC__) && !defined(__UCLIBC__))) \
-      || (defined(__APPLE__) && defined(__MACH__))
- #    define BACKTRACE_ENABLE 1
- #  else