lib/Makefile - platform/external/zstd - Git at Google

 # ################################################################
 # Copyright (c) 2015-2020, Yann Collet, Facebook, Inc.
 # All rights reserved.
 #
 # This source code is licensed under both the BSD-style license (found in the
 # LICENSE file in the root directory of this source tree) and the GPLv2 (found
 # in the COPYING file in the root directory of this source tree).
 # You may select, at your option, one of the above-listed licenses.
 # ################################################################

 Q = $(if $(filter 1,$(V) $(VERBOSE)),,@)

 # When cross-compiling from linux to windows, you might
 # need to specify this as "Windows." Fedora build fails
 # without it.
 #
 # Note: mingw-w64 build from linux to windows does not
 # fail on other tested distros (ubuntu, debian) even
 # without manually specifying the TARGET_SYSTEM.
 TARGET_SYSTEM ?= $(OS)

 # Version numbers
 LIBVER_MAJOR_SCRIPT:=`sed -n '/define ZSTD_VERSION_MAJOR/s/.*[[:blank:]]\([0-9][0-9]*\).*/\1/p' < ./zstd.h`
 LIBVER_MINOR_SCRIPT:=`sed -n '/define ZSTD_VERSION_MINOR/s/.*[[:blank:]]\([0-9][0-9]*\).*/\1/p' < ./zstd.h`
 LIBVER_PATCH_SCRIPT:=`sed -n '/define ZSTD_VERSION_RELEASE/s/.*[[:blank:]]\([0-9][0-9]*\).*/\1/p' < ./zstd.h`
 LIBVER_SCRIPT:= $(LIBVER_MAJOR_SCRIPT).$(LIBVER_MINOR_SCRIPT).$(LIBVER_PATCH_SCRIPT)
 LIBVER_MAJOR := $(shell echo $(LIBVER_MAJOR_SCRIPT))
 LIBVER_MINOR := $(shell echo $(LIBVER_MINOR_SCRIPT))
 LIBVER_PATCH := $(shell echo $(LIBVER_PATCH_SCRIPT))
 LIBVER := $(shell echo $(LIBVER_SCRIPT))
 VERSION?= $(LIBVER)
 CCVER := $(shell $(CC) --version)

 CPPFLAGS+= -DXXH_NAMESPACE=ZSTD_
 ifeq ($(TARGET_SYSTEM),Windows_NT)   # MinGW assumed
 CPPFLAGS   += -D__USE_MINGW_ANSI_STDIO   # compatibility with %zu formatting
 endif
 DEBUGFLAGS= -Wall -Wextra -Wcast-qual -Wcast-align -Wshadow \
             -Wstrict-aliasing=1 -Wswitch-enum -Wdeclaration-after-statement \
             -Wstrict-prototypes -Wundef -Wpointer-arith \
             -Wvla -Wformat=2 -Winit-self -Wfloat-equal -Wwrite-strings \
             -Wredundant-decls -Wmissing-prototypes -Wc++-compat
 CFLAGS  += $(DEBUGFLAGS) $(MOREFLAGS)
 FLAGS    = $(CPPFLAGS) $(CFLAGS)

 HAVE_COLORNEVER = $(shell echo a | grep --color=never a > /dev/null 2> /dev/null && echo 1 || echo 0)
 GREP_OPTIONS ?=
 ifeq ($HAVE_COLORNEVER, 1)
 GREP_OPTIONS += --color=never
 endif
 GREP = grep $(GREP_OPTIONS)

 ZSTDCOMMON_FILES := $(sort $(wildcard common/*.c))
 ZSTDCOMP_FILES := $(sort $(wildcard compress/*.c))
 ZSTDDECOMP_FILES := $(sort $(wildcard decompress/*.c))
 ZDICT_FILES := $(sort $(wildcard dictBuilder/*.c))
 ZDEPR_FILES := $(sort $(wildcard deprecated/*.c))
 ZSTD_FILES := $(ZSTDCOMMON_FILES)

 ifeq ($(findstring GCC,$(CCVER)),GCC)
 decompress/zstd_decompress_block.o :	CFLAGS+=-fno-tree-vectorize
 endif

 # This is a helper variable that configures a bunch of other variables to new,
 # space-optimized defaults.
 ZSTD_LIB_MINIFY ?= 0
 ifneq ($(ZSTD_LIB_MINIFY), 0)
 	HAVE_CC_OZ ?= $(shell echo "" | $(CC) -Oz -x c -c - -o /dev/null 2> /dev/null && echo 1 || echo 0)
 	ZSTD_LEGACY_SUPPORT ?= 0
 	ZSTD_LIB_DEPRECATED ?= 0
 	HUF_FORCE_DECOMPRESS_X1 ?= 1
 	ZSTD_FORCE_DECOMPRESS_SHORT ?= 1
 	ZSTD_NO_INLINE ?= 1
 	ZSTD_STRIP_ERROR_STRINGS ?= 1
 	ifneq ($(HAVE_CC_OZ), 0)
 		# Some compilers (clang) support an even more space-optimized setting.
 		CFLAGS += -Oz
 	else
 		CFLAGS += -Os
 	endif
 	CFLAGS += -fno-stack-protector -fomit-frame-pointer -fno-ident \
 	          -DDYNAMIC_BMI2=0 -DNDEBUG
 else
 	CFLAGS += -O3
 endif

 # Modules
 ZSTD_LIB_COMPRESSION ?= 1
 ZSTD_LIB_DECOMPRESSION ?= 1
 ZSTD_LIB_DICTBUILDER ?= 1
 ZSTD_LIB_DEPRECATED ?= 1

 # Legacy support
 ZSTD_LEGACY_SUPPORT ?= 5
 ZSTD_LEGACY_MULTITHREADED_API ?= 0

 # Build size optimizations
 HUF_FORCE_DECOMPRESS_X1 ?= 0
 HUF_FORCE_DECOMPRESS_X2 ?= 0
 ZSTD_FORCE_DECOMPRESS_SHORT ?= 0
 ZSTD_FORCE_DECOMPRESS_LONG ?= 0
 ZSTD_NO_INLINE ?= 0
 ZSTD_STRIP_ERROR_STRINGS ?= 0

 ifeq ($(ZSTD_LIB_COMPRESSION), 0)
 	ZSTD_LIB_DICTBUILDER = 0
 	ZSTD_LIB_DEPRECATED = 0
 endif

 ifeq ($(ZSTD_LIB_DECOMPRESSION), 0)
 	ZSTD_LEGACY_SUPPORT = 0
 	ZSTD_LIB_DEPRECATED = 0
 endif

 ifneq ($(ZSTD_LIB_COMPRESSION), 0)
 	ZSTD_FILES += $(ZSTDCOMP_FILES)
 endif

 ifneq ($(ZSTD_LIB_DECOMPRESSION), 0)
 	ZSTD_FILES += $(ZSTDDECOMP_FILES)
 endif

 ifneq ($(ZSTD_LIB_DEPRECATED), 0)
 	ZSTD_FILES += $(ZDEPR_FILES)
 endif

 ifneq ($(ZSTD_LIB_DICTBUILDER), 0)
 	ZSTD_FILES += $(ZDICT_FILES)
 endif

 ifneq ($(HUF_FORCE_DECOMPRESS_X1), 0)
 	CFLAGS += -DHUF_FORCE_DECOMPRESS_X1
 endif

 ifneq ($(HUF_FORCE_DECOMPRESS_X2), 0)
 	CFLAGS += -DHUF_FORCE_DECOMPRESS_X2
 endif

 ifneq ($(ZSTD_FORCE_DECOMPRESS_SHORT), 0)
 	CFLAGS += -DZSTD_FORCE_DECOMPRESS_SHORT
 endif

 ifneq ($(ZSTD_FORCE_DECOMPRESS_LONG), 0)
 	CFLAGS += -DZSTD_FORCE_DECOMPRESS_LONG
 endif

 ifneq ($(ZSTD_NO_INLINE), 0)
 	CFLAGS += -DZSTD_NO_INLINE
 endif

 ifneq ($(ZSTD_STRIP_ERROR_STRINGS), 0)
 	CFLAGS += -DZSTD_STRIP_ERROR_STRINGS
 endif

 ifneq ($(ZSTD_LEGACY_MULTITHREADED_API), 0)
 	CFLAGS += -DZSTD_LEGACY_MULTITHREADED_API
 endif

 ifneq ($(ZSTD_LEGACY_SUPPORT), 0)
 ifeq ($(shell test $(ZSTD_LEGACY_SUPPORT) -lt 8; echo $$?), 0)
 	ZSTD_FILES += $(shell ls legacy/*.c | $(GREP) 'v0[$(ZSTD_LEGACY_SUPPORT)-7]')
 endif
 endif
 CPPFLAGS  += -DZSTD_LEGACY_SUPPORT=$(ZSTD_LEGACY_SUPPORT)

 ZSTD_OBJ   := $(patsubst %.c,%.o,$(ZSTD_FILES))

 # macOS linker doesn't support -soname, and use different extension
 # see : https://developer.apple.com/library/mac/documentation/DeveloperTools/Conceptual/DynamicLibraries/100-Articles/DynamicLibraryDesignGuidelines.html
 ifeq ($(shell uname), Darwin)
 	SHARED_EXT = dylib
 	SHARED_EXT_MAJOR = $(LIBVER_MAJOR).$(SHARED_EXT)
 	SHARED_EXT_VER = $(LIBVER).$(SHARED_EXT)
 	SONAME_FLAGS = -install_name $(LIBDIR)/libzstd.$(SHARED_EXT_MAJOR) -compatibility_version $(LIBVER_MAJOR) -current_version $(LIBVER)
 else
 	SONAME_FLAGS = -Wl,-soname=libzstd.$(SHARED_EXT).$(LIBVER_MAJOR)
 	SHARED_EXT = so
 	SHARED_EXT_MAJOR = $(SHARED_EXT).$(LIBVER_MAJOR)
 	SHARED_EXT_VER = $(SHARED_EXT).$(LIBVER)
 endif


 .PHONY: default lib-all all clean install uninstall

 default: lib-release

 # alias
 lib-all: all

 all: lib

 libzstd.a: ARFLAGS = rcs
 libzstd.a: $(ZSTD_OBJ)
 	@echo compiling static library
 	$(Q)$(AR) $(ARFLAGS) $@ $^

 ifneq (,$(filter Windows%,$(TARGET_SYSTEM)))

 LIBZSTD = dll\libzstd.dll
 $(LIBZSTD): $(ZSTD_FILES)
 	@echo compiling dynamic library $(LIBVER)
 	$(CC) $(FLAGS) -DZSTD_DLL_EXPORT=1 -Wl,--out-implib,dll\libzstd.dll.a -shared $^ -o $@

 else

 LIBZSTD = libzstd.$(SHARED_EXT_VER)
 $(LIBZSTD): LDFLAGS += -shared -fPIC -fvisibility=hidden
 $(LIBZSTD): $(ZSTD_FILES)
 	@echo compiling dynamic library $(LIBVER)
 	$(Q)$(CC) $(FLAGS) $^ $(LDFLAGS) $(SONAME_FLAGS) -o $@
 	@echo creating versioned links
 	$(Q)ln -sf $@ libzstd.$(SHARED_EXT_MAJOR)
 	$(Q)ln -sf $@ libzstd.$(SHARED_EXT)

 endif

 .PHONY: libzstd
 libzstd : $(LIBZSTD)

 .PHONY: lib
 lib : libzstd.a libzstd

 .PHONY: lib-mt
 %-mt : CPPFLAGS += -DZSTD_MULTITHREAD
 %-mt : LDFLAGS  += -pthread
 %-mt : %
 	@echo multi-threading build completed

 .PHONY: lib-release
 %-release : DEBUGFLAGS :=
 %-release : %
 	@echo release build completed


 # Special case : building library in single-thread mode _and_ without zstdmt_compress.c
 ZSTDMT_FILES = compress/zstdmt_compress.c
 ZSTD_NOMT_FILES = $(filter-out $(ZSTDMT_FILES),$(ZSTD_FILES))
 libzstd-nomt: LDFLAGS += -shared -fPIC -fvisibility=hidden
 libzstd-nomt: $(ZSTD_NOMT_FILES)
 	@echo compiling single-thread dynamic library $(LIBVER)
 	@echo files : $(ZSTD_NOMT_FILES)
 	$(Q)$(CC) $(FLAGS) $^ $(LDFLAGS) $(SONAME_FLAGS) -o $@

 clean:
 	$(Q)$(RM) -r *.dSYM   # macOS-specific
 	$(Q)$(RM) core *.o *.a *.gcda *.$(SHARED_EXT) *.$(SHARED_EXT).* libzstd.pc
 	$(Q)$(RM) dll/libzstd.dll dll/libzstd.lib libzstd-nomt*
 	$(Q)$(RM) common/*.o compress/*.o decompress/*.o dictBuilder/*.o legacy/*.o deprecated/*.o
 	@echo Cleaning library completed

 #-----------------------------------------------------------------------------
 # make install is validated only for below listed environments
 #-----------------------------------------------------------------------------
 ifneq (,$(filter $(shell uname),Linux Darwin GNU/kFreeBSD GNU OpenBSD FreeBSD NetBSD DragonFly SunOS Haiku))

 all: libzstd.pc

 DESTDIR     ?=
 # directory variables : GNU conventions prefer lowercase
 # see https://www.gnu.org/prep/standards/html_node/Makefile-Conventions.html
 # support both lower and uppercase (BSD), use uppercase in script
 prefix      ?= /usr/local
 PREFIX      ?= $(prefix)
 exec_prefix ?= $(PREFIX)
 EXEC_PREFIX ?= $(exec_prefix)
 libdir      ?= $(EXEC_PREFIX)/lib
 LIBDIR      ?= $(libdir)
 includedir  ?= $(PREFIX)/include
 INCLUDEDIR  ?= $(includedir)

 PCLIBDIR ?= $(shell echo "$(LIBDIR)" | sed -n -E -e "s@^$(EXEC_PREFIX)(/|$$)@@p")
 PCINCDIR ?= $(shell echo "$(INCLUDEDIR)" | sed -n -E -e "s@^$(PREFIX)(/|$$)@@p")

 ifeq (,$(PCLIBDIR))
 # Additional prefix check is required, since the empty string is technically a
 # valid PCLIBDIR
 ifeq (,$(shell echo "$(LIBDIR)" | sed -n -E -e "\\@^$(EXEC_PREFIX)(/|$$)@ p"))
 $(error configured libdir ($(LIBDIR)) is outside of prefix ($(PREFIX)), can't generate pkg-config file)
 endif
 endif

 ifeq (,$(PCINCDIR))
 # Additional prefix check is required, since the empty string is technically a
 # valid PCINCDIR
 ifeq (,$(shell echo "$(INCLUDEDIR)" | sed -n -E -e "\\@^$(PREFIX)(/|$$)@ p"))
 $(error configured includedir ($(INCLUDEDIR)) is outside of exec_prefix ($(EXEC_PREFIX)), can't generate pkg-config file)
 endif
 endif

 ifneq (,$(filter $(shell uname),FreeBSD NetBSD DragonFly))
 PKGCONFIGDIR ?= $(PREFIX)/libdata/pkgconfig
 else
 PKGCONFIGDIR ?= $(LIBDIR)/pkgconfig
 endif

 ifneq (,$(filter $(shell uname),SunOS))
 INSTALL ?= ginstall
 else
 INSTALL ?= install
 endif

 INSTALL_PROGRAM ?= $(INSTALL)
 INSTALL_DATA    ?= $(INSTALL) -m 644


 libzstd.pc:
 libzstd.pc: libzstd.pc.in
 	@echo creating pkgconfig
 	$(Q)@sed -E -e 's|@PREFIX@|$(PREFIX)|' \
           -e 's|@LIBDIR@|$(PCLIBDIR)|' \
           -e 's|@INCLUDEDIR@|$(PCINCDIR)|' \
           -e 's|@VERSION@|$(VERSION)|' \
           $< >$@

 install: install-pc install-static install-shared install-includes
 	@echo zstd static and shared library installed

 install-pc: libzstd.pc
 	$(Q)$(INSTALL) -d -m 755 $(DESTDIR)$(PKGCONFIGDIR)/
 	$(Q)$(INSTALL_DATA) libzstd.pc $(DESTDIR)$(PKGCONFIGDIR)/

 install-static: libzstd.a
 	@echo Installing static library
 	$(Q)$(INSTALL) -d -m 755 $(DESTDIR)$(LIBDIR)/
 	$(Q)$(INSTALL_DATA) libzstd.a $(DESTDIR)$(LIBDIR)

 install-shared: libzstd
 	@echo Installing shared library
 	$(Q)$(INSTALL) -d -m 755 $(DESTDIR)$(LIBDIR)/
 	$(Q)$(INSTALL_PROGRAM) $(LIBZSTD) $(DESTDIR)$(LIBDIR)
 	$(Q)ln -sf $(LIBZSTD) $(DESTDIR)$(LIBDIR)/libzstd.$(SHARED_EXT_MAJOR)
 	$(Q)ln -sf $(LIBZSTD) $(DESTDIR)$(LIBDIR)/libzstd.$(SHARED_EXT)

 install-includes:
 	@echo Installing includes
 	$(Q)$(INSTALL) -d -m 755 $(DESTDIR)$(INCLUDEDIR)/
 	$(Q)$(INSTALL_DATA) zstd.h $(DESTDIR)$(INCLUDEDIR)
 	$(Q)$(INSTALL_DATA) common/zstd_errors.h $(DESTDIR)$(INCLUDEDIR)
 	$(Q)$(INSTALL_DATA) deprecated/zbuff.h $(DESTDIR)$(INCLUDEDIR)     # prototypes generate deprecation warnings
 	$(Q)$(INSTALL_DATA) dictBuilder/zdict.h $(DESTDIR)$(INCLUDEDIR)

 uninstall:
 	$(Q)$(RM) $(DESTDIR)$(LIBDIR)/libzstd.a
 	$(Q)$(RM) $(DESTDIR)$(LIBDIR)/libzstd.$(SHARED_EXT)
 	$(Q)$(RM) $(DESTDIR)$(LIBDIR)/libzstd.$(SHARED_EXT_MAJOR)
 	$(Q)$(RM) $(DESTDIR)$(LIBDIR)/$(LIBZSTD)
 	$(Q)$(RM) $(DESTDIR)$(PKGCONFIGDIR)/libzstd.pc
 	$(Q)$(RM) $(DESTDIR)$(INCLUDEDIR)/zstd.h
 	$(Q)$(RM) $(DESTDIR)$(INCLUDEDIR)/zstd_errors.h
 	$(Q)$(RM) $(DESTDIR)$(INCLUDEDIR)/zbuff.h   # Deprecated streaming functions
 	$(Q)$(RM) $(DESTDIR)$(INCLUDEDIR)/zdict.h
 	@echo zstd libraries successfully uninstalled

 endif
	# ################################################################
	# Copyright (c) 2015-2020, Yann Collet, Facebook, Inc.
	# All rights reserved.
	#
	# This source code is licensed under both the BSD-style license (found in the
	# LICENSE file in the root directory of this source tree) and the GPLv2 (found
	# in the COPYING file in the root directory of this source tree).
	# You may select, at your option, one of the above-listed licenses.
	# ################################################################

	Q = $(if $(filter 1,$(V) $(VERBOSE)),,@)

	# When cross-compiling from linux to windows, you might
	# need to specify this as "Windows." Fedora build fails
	# without it.
	#
	# Note: mingw-w64 build from linux to windows does not
	# fail on other tested distros (ubuntu, debian) even
	# without manually specifying the TARGET_SYSTEM.
	TARGET_SYSTEM ?= $(OS)

	# Version numbers
	LIBVER_MAJOR_SCRIPT:=`sed -n '/define ZSTD_VERSION_MAJOR/s/.[[:blank:]]\([0-9][0-9]\).*/\1/p' < ./zstd.h`
	LIBVER_MINOR_SCRIPT:=`sed -n '/define ZSTD_VERSION_MINOR/s/.[[:blank:]]\([0-9][0-9]\).*/\1/p' < ./zstd.h`
	LIBVER_PATCH_SCRIPT:=`sed -n '/define ZSTD_VERSION_RELEASE/s/.[[:blank:]]\([0-9][0-9]\).*/\1/p' < ./zstd.h`
	LIBVER_SCRIPT:= $(LIBVER_MAJOR_SCRIPT).$(LIBVER_MINOR_SCRIPT).$(LIBVER_PATCH_SCRIPT)
	LIBVER_MAJOR := $(shell echo $(LIBVER_MAJOR_SCRIPT))
	LIBVER_MINOR := $(shell echo $(LIBVER_MINOR_SCRIPT))
	LIBVER_PATCH := $(shell echo $(LIBVER_PATCH_SCRIPT))
	LIBVER := $(shell echo $(LIBVER_SCRIPT))
	VERSION?= $(LIBVER)
	CCVER := $(shell $(CC) --version)

	CPPFLAGS+= -DXXH_NAMESPACE=ZSTD_
	ifeq ($(TARGET_SYSTEM),Windows_NT) # MinGW assumed
	CPPFLAGS += -D__USE_MINGW_ANSI_STDIO # compatibility with %zu formatting
	endif
	DEBUGFLAGS= -Wall -Wextra -Wcast-qual -Wcast-align -Wshadow \
	-Wstrict-aliasing=1 -Wswitch-enum -Wdeclaration-after-statement \
	-Wstrict-prototypes -Wundef -Wpointer-arith \
	-Wvla -Wformat=2 -Winit-self -Wfloat-equal -Wwrite-strings \
	-Wredundant-decls -Wmissing-prototypes -Wc++-compat
	CFLAGS += $(DEBUGFLAGS) $(MOREFLAGS)
	FLAGS = $(CPPFLAGS) $(CFLAGS)

	HAVE_COLORNEVER = $(shell echo a \| grep --color=never a > /dev/null 2> /dev/null && echo 1 \|\| echo 0)
	GREP_OPTIONS ?=
	ifeq ($HAVE_COLORNEVER, 1)
	GREP_OPTIONS += --color=never
	endif
	GREP = grep $(GREP_OPTIONS)

	ZSTDCOMMON_FILES := $(sort $(wildcard common/*.c))
	ZSTDCOMP_FILES := $(sort $(wildcard compress/*.c))
	ZSTDDECOMP_FILES := $(sort $(wildcard decompress/*.c))
	ZDICT_FILES := $(sort $(wildcard dictBuilder/*.c))
	ZDEPR_FILES := $(sort $(wildcard deprecated/*.c))
	ZSTD_FILES := $(ZSTDCOMMON_FILES)

	ifeq ($(findstring GCC,$(CCVER)),GCC)
	decompress/zstd_decompress_block.o : CFLAGS+=-fno-tree-vectorize
	endif

	# This is a helper variable that configures a bunch of other variables to new,
	# space-optimized defaults.
	ZSTD_LIB_MINIFY ?= 0
	ifneq ($(ZSTD_LIB_MINIFY), 0)
	HAVE_CC_OZ ?= $(shell echo "" \| $(CC) -Oz -x c -c - -o /dev/null 2> /dev/null && echo 1 \|\| echo 0)
	ZSTD_LEGACY_SUPPORT ?= 0
	ZSTD_LIB_DEPRECATED ?= 0
	HUF_FORCE_DECOMPRESS_X1 ?= 1
	ZSTD_FORCE_DECOMPRESS_SHORT ?= 1
	ZSTD_NO_INLINE ?= 1
	ZSTD_STRIP_ERROR_STRINGS ?= 1
	ifneq ($(HAVE_CC_OZ), 0)
	# Some compilers (clang) support an even more space-optimized setting.
	CFLAGS += -Oz
	else
	CFLAGS += -Os
	endif
	CFLAGS += -fno-stack-protector -fomit-frame-pointer -fno-ident \
	-DDYNAMIC_BMI2=0 -DNDEBUG
	else
	CFLAGS += -O3
	endif

	# Modules
	ZSTD_LIB_COMPRESSION ?= 1
	ZSTD_LIB_DECOMPRESSION ?= 1
	ZSTD_LIB_DICTBUILDER ?= 1
	ZSTD_LIB_DEPRECATED ?= 1

	# Legacy support
	ZSTD_LEGACY_SUPPORT ?= 5
	ZSTD_LEGACY_MULTITHREADED_API ?= 0

	# Build size optimizations
	HUF_FORCE_DECOMPRESS_X1 ?= 0
	HUF_FORCE_DECOMPRESS_X2 ?= 0
	ZSTD_FORCE_DECOMPRESS_SHORT ?= 0
	ZSTD_FORCE_DECOMPRESS_LONG ?= 0
	ZSTD_NO_INLINE ?= 0
	ZSTD_STRIP_ERROR_STRINGS ?= 0

	ifeq ($(ZSTD_LIB_COMPRESSION), 0)
	ZSTD_LIB_DICTBUILDER = 0
	ZSTD_LIB_DEPRECATED = 0
	endif

	ifeq ($(ZSTD_LIB_DECOMPRESSION), 0)
	ZSTD_LEGACY_SUPPORT = 0
	ZSTD_LIB_DEPRECATED = 0
	endif

	ifneq ($(ZSTD_LIB_COMPRESSION), 0)
	ZSTD_FILES += $(ZSTDCOMP_FILES)
	endif

	ifneq ($(ZSTD_LIB_DECOMPRESSION), 0)
	ZSTD_FILES += $(ZSTDDECOMP_FILES)
	endif

	ifneq ($(ZSTD_LIB_DEPRECATED), 0)
	ZSTD_FILES += $(ZDEPR_FILES)
	endif

	ifneq ($(ZSTD_LIB_DICTBUILDER), 0)
	ZSTD_FILES += $(ZDICT_FILES)
	endif

	ifneq ($(HUF_FORCE_DECOMPRESS_X1), 0)
	CFLAGS += -DHUF_FORCE_DECOMPRESS_X1
	endif

	ifneq ($(HUF_FORCE_DECOMPRESS_X2), 0)
	CFLAGS += -DHUF_FORCE_DECOMPRESS_X2
	endif

	ifneq ($(ZSTD_FORCE_DECOMPRESS_SHORT), 0)
	CFLAGS += -DZSTD_FORCE_DECOMPRESS_SHORT
	endif

	ifneq ($(ZSTD_FORCE_DECOMPRESS_LONG), 0)
	CFLAGS += -DZSTD_FORCE_DECOMPRESS_LONG
	endif

	ifneq ($(ZSTD_NO_INLINE), 0)
	CFLAGS += -DZSTD_NO_INLINE
	endif

	ifneq ($(ZSTD_STRIP_ERROR_STRINGS), 0)
	CFLAGS += -DZSTD_STRIP_ERROR_STRINGS
	endif

	ifneq ($(ZSTD_LEGACY_MULTITHREADED_API), 0)
	CFLAGS += -DZSTD_LEGACY_MULTITHREADED_API
	endif

	ifneq ($(ZSTD_LEGACY_SUPPORT), 0)
	ifeq ($(shell test $(ZSTD_LEGACY_SUPPORT) -lt 8; echo $$?), 0)
	ZSTD_FILES += $(shell ls legacy/*.c \| $(GREP) 'v0[$(ZSTD_LEGACY_SUPPORT)-7]')
	endif
	endif
	CPPFLAGS += -DZSTD_LEGACY_SUPPORT=$(ZSTD_LEGACY_SUPPORT)

	ZSTD_OBJ := $(patsubst %.c,%.o,$(ZSTD_FILES))

	# macOS linker doesn't support -soname, and use different extension
	# see : https://developer.apple.com/library/mac/documentation/DeveloperTools/Conceptual/DynamicLibraries/100-Articles/DynamicLibraryDesignGuidelines.html
	ifeq ($(shell uname), Darwin)
	SHARED_EXT = dylib
	SHARED_EXT_MAJOR = $(LIBVER_MAJOR).$(SHARED_EXT)
	SHARED_EXT_VER = $(LIBVER).$(SHARED_EXT)
	SONAME_FLAGS = -install_name $(LIBDIR)/libzstd.$(SHARED_EXT_MAJOR) -compatibility_version $(LIBVER_MAJOR) -current_version $(LIBVER)
	else
	SONAME_FLAGS = -Wl,-soname=libzstd.$(SHARED_EXT).$(LIBVER_MAJOR)
	SHARED_EXT = so
	SHARED_EXT_MAJOR = $(SHARED_EXT).$(LIBVER_MAJOR)
	SHARED_EXT_VER = $(SHARED_EXT).$(LIBVER)
	endif


	.PHONY: default lib-all all clean install uninstall

	default: lib-release

	# alias
	lib-all: all

	all: lib

	libzstd.a: ARFLAGS = rcs
	libzstd.a: $(ZSTD_OBJ)
	@echo compiling static library
	$(Q)$(AR) $(ARFLAGS) $@ $^

	ifneq (,$(filter Windows%,$(TARGET_SYSTEM)))

	LIBZSTD = dll\libzstd.dll
	$(LIBZSTD): $(ZSTD_FILES)
	@echo compiling dynamic library $(LIBVER)
	$(CC) $(FLAGS) -DZSTD_DLL_EXPORT=1 -Wl,--out-implib,dll\libzstd.dll.a -shared $^ -o $@

	else

	LIBZSTD = libzstd.$(SHARED_EXT_VER)
	$(LIBZSTD): LDFLAGS += -shared -fPIC -fvisibility=hidden
	$(LIBZSTD): $(ZSTD_FILES)
	@echo compiling dynamic library $(LIBVER)
	$(Q)$(CC) $(FLAGS) $^ $(LDFLAGS) $(SONAME_FLAGS) -o $@
	@echo creating versioned links
	$(Q)ln -sf $@ libzstd.$(SHARED_EXT_MAJOR)
	$(Q)ln -sf $@ libzstd.$(SHARED_EXT)

	endif

	.PHONY: libzstd
	libzstd : $(LIBZSTD)

	.PHONY: lib
	lib : libzstd.a libzstd

	.PHONY: lib-mt
	%-mt : CPPFLAGS += -DZSTD_MULTITHREAD
	%-mt : LDFLAGS += -pthread
	%-mt : %
	@echo multi-threading build completed

	.PHONY: lib-release
	%-release : DEBUGFLAGS :=
	%-release : %
	@echo release build completed


	# Special case : building library in single-thread mode _and_ without zstdmt_compress.c
	ZSTDMT_FILES = compress/zstdmt_compress.c
	ZSTD_NOMT_FILES = $(filter-out $(ZSTDMT_FILES),$(ZSTD_FILES))
	libzstd-nomt: LDFLAGS += -shared -fPIC -fvisibility=hidden
	libzstd-nomt: $(ZSTD_NOMT_FILES)
	@echo compiling single-thread dynamic library $(LIBVER)
	@echo files : $(ZSTD_NOMT_FILES)
	$(Q)$(CC) $(FLAGS) $^ $(LDFLAGS) $(SONAME_FLAGS) -o $@

	clean:
	$(Q)$(RM) -r *.dSYM # macOS-specific
	$(Q)$(RM) core .o .a .gcda .$(SHARED_EXT) .$(SHARED_EXT). libzstd.pc
	$(Q)$(RM) dll/libzstd.dll dll/libzstd.lib libzstd-nomt*
	$(Q)$(RM) common/.o compress/.o decompress/.o dictBuilder/.o legacy/.o deprecated/.o
	@echo Cleaning library completed

	#-----------------------------------------------------------------------------
	# make install is validated only for below listed environments
	#-----------------------------------------------------------------------------
	ifneq (,$(filter $(shell uname),Linux Darwin GNU/kFreeBSD GNU OpenBSD FreeBSD NetBSD DragonFly SunOS Haiku))

	all: libzstd.pc

	DESTDIR ?=
	# directory variables : GNU conventions prefer lowercase
	# see https://www.gnu.org/prep/standards/html_node/Makefile-Conventions.html
	# support both lower and uppercase (BSD), use uppercase in script
	prefix ?= /usr/local
	PREFIX ?= $(prefix)
	exec_prefix ?= $(PREFIX)
	EXEC_PREFIX ?= $(exec_prefix)
	libdir ?= $(EXEC_PREFIX)/lib
	LIBDIR ?= $(libdir)
	includedir ?= $(PREFIX)/include
	INCLUDEDIR ?= $(includedir)

	PCLIBDIR ?= $(shell echo "$(LIBDIR)" \| sed -n -E -e "s@^$(EXEC_PREFIX)(/\|$$)@@p")
	PCINCDIR ?= $(shell echo "$(INCLUDEDIR)" \| sed -n -E -e "s@^$(PREFIX)(/\|$$)@@p")

	ifeq (,$(PCLIBDIR))
	# Additional prefix check is required, since the empty string is technically a
	# valid PCLIBDIR
	ifeq (,$(shell echo "$(LIBDIR)" \| sed -n -E -e "\\@^$(EXEC_PREFIX)(/\|$$)@ p"))
	$(error configured libdir ($(LIBDIR)) is outside of prefix ($(PREFIX)), can't generate pkg-config file)
	endif
	endif

	ifeq (,$(PCINCDIR))
	# Additional prefix check is required, since the empty string is technically a
	# valid PCINCDIR
	ifeq (,$(shell echo "$(INCLUDEDIR)" \| sed -n -E -e "\\@^$(PREFIX)(/\|$$)@ p"))
	$(error configured includedir ($(INCLUDEDIR)) is outside of exec_prefix ($(EXEC_PREFIX)), can't generate pkg-config file)
	endif
	endif

	ifneq (,$(filter $(shell uname),FreeBSD NetBSD DragonFly))
	PKGCONFIGDIR ?= $(PREFIX)/libdata/pkgconfig
	else
	PKGCONFIGDIR ?= $(LIBDIR)/pkgconfig
	endif

	ifneq (,$(filter $(shell uname),SunOS))
	INSTALL ?= ginstall
	else
	INSTALL ?= install
	endif

	INSTALL_PROGRAM ?= $(INSTALL)
	INSTALL_DATA ?= $(INSTALL) -m 644


	libzstd.pc:
	libzstd.pc: libzstd.pc.in
	@echo creating pkgconfig
	$(Q)@sed -E -e 's\|@PREFIX@\|$(PREFIX)\|' \
	-e 's\|@LIBDIR@\|$(PCLIBDIR)\|' \
	-e 's\|@INCLUDEDIR@\|$(PCINCDIR)\|' \
	-e 's\|@VERSION@\|$(VERSION)\|' \
	$< >$@

	install: install-pc install-static install-shared install-includes
	@echo zstd static and shared library installed

	install-pc: libzstd.pc
	$(Q)$(INSTALL) -d -m 755 $(DESTDIR)$(PKGCONFIGDIR)/
	$(Q)$(INSTALL_DATA) libzstd.pc $(DESTDIR)$(PKGCONFIGDIR)/

	install-static: libzstd.a
	@echo Installing static library
	$(Q)$(INSTALL) -d -m 755 $(DESTDIR)$(LIBDIR)/
	$(Q)$(INSTALL_DATA) libzstd.a $(DESTDIR)$(LIBDIR)

	install-shared: libzstd
	@echo Installing shared library
	$(Q)$(INSTALL) -d -m 755 $(DESTDIR)$(LIBDIR)/
	$(Q)$(INSTALL_PROGRAM) $(LIBZSTD) $(DESTDIR)$(LIBDIR)
	$(Q)ln -sf $(LIBZSTD) $(DESTDIR)$(LIBDIR)/libzstd.$(SHARED_EXT_MAJOR)
	$(Q)ln -sf $(LIBZSTD) $(DESTDIR)$(LIBDIR)/libzstd.$(SHARED_EXT)

	install-includes:
	@echo Installing includes
	$(Q)$(INSTALL) -d -m 755 $(DESTDIR)$(INCLUDEDIR)/
	$(Q)$(INSTALL_DATA) zstd.h $(DESTDIR)$(INCLUDEDIR)
	$(Q)$(INSTALL_DATA) common/zstd_errors.h $(DESTDIR)$(INCLUDEDIR)
	$(Q)$(INSTALL_DATA) deprecated/zbuff.h $(DESTDIR)$(INCLUDEDIR) # prototypes generate deprecation warnings
	$(Q)$(INSTALL_DATA) dictBuilder/zdict.h $(DESTDIR)$(INCLUDEDIR)

	uninstall:
	$(Q)$(RM) $(DESTDIR)$(LIBDIR)/libzstd.a
	$(Q)$(RM) $(DESTDIR)$(LIBDIR)/libzstd.$(SHARED_EXT)
	$(Q)$(RM) $(DESTDIR)$(LIBDIR)/libzstd.$(SHARED_EXT_MAJOR)
	$(Q)$(RM) $(DESTDIR)$(LIBDIR)/$(LIBZSTD)
	$(Q)$(RM) $(DESTDIR)$(PKGCONFIGDIR)/libzstd.pc
	$(Q)$(RM) $(DESTDIR)$(INCLUDEDIR)/zstd.h
	$(Q)$(RM) $(DESTDIR)$(INCLUDEDIR)/zstd_errors.h
	$(Q)$(RM) $(DESTDIR)$(INCLUDEDIR)/zbuff.h # Deprecated streaming functions
	$(Q)$(RM) $(DESTDIR)$(INCLUDEDIR)/zdict.h
	@echo zstd libraries successfully uninstalled

	endif