build libzstd.so from object files
%.o object files generated for dynamic library must be different from those generated for static library. Due to this difference, %.o were so far only generated for the static library. The dynamic library was rebuilt from %.c source. This meant that, for every minor change, the entire dynamic library had to be rebuilt. This is fixed in this PR : only the modified %.c source get rebuilt.dev
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d6dae2000b
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lib/Makefile
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lib/Makefile
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@ -164,7 +164,16 @@ endif
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endif
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CPPFLAGS += -DZSTD_LEGACY_SUPPORT=$(ZSTD_LEGACY_SUPPORT)
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ZSTD_OBJ := $(patsubst %.c,%.o,$(ZSTD_FILES))
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ZSTD_OBJ := $(ZSTD_FILES:.c=.o)
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vpath %.c ./common
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vpath %.c ./compress
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vpath %.c ./decompress
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vpath %.c ./dictBuilder
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vpath %.c ./legacy
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vpath %.c ./deprecated
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ZSTD_DYNLIB_OBJ := $(notdir $(ZSTD_OBJ))
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# macOS linker doesn't support -soname, and use different extension
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# see : https://developer.apple.com/library/mac/documentation/DeveloperTools/Conceptual/DynamicLibraries/100-Articles/DynamicLibraryDesignGuidelines.html
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@ -205,8 +214,9 @@ $(LIBZSTD): $(ZSTD_FILES)
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else
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LIBZSTD = libzstd.$(SHARED_EXT_VER)
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$(LIBZSTD): LDFLAGS += -shared -fPIC -fvisibility=hidden
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$(LIBZSTD): $(ZSTD_FILES)
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$(LIBZSTD): CFLAGS += -fPIC
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$(LIBZSTD): LDFLAGS += -shared -fvisibility=hidden
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$(LIBZSTD): $(ZSTD_DYNLIB_OBJ)
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@echo compiling dynamic library $(LIBVER)
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$(Q)$(CC) $(FLAGS) $^ $(LDFLAGS) $(SONAME_FLAGS) -o $@
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@echo creating versioned links
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