From 883ebdcee0aae3e8339dd3658c794ca49dfb18b1 Mon Sep 17 00:00:00 2001 From: "Dmitry V. Levin" Date: Fri, 10 Mar 2017 23:35:30 +0000 Subject: [PATCH] Export only those symbols that are part of public API Specify -fvisibility=hidden parameter when linking the shared library using -fPIC, assuming that gcc >= 4 is used. This change results to unexporting of the following 42 functions: LZ4F_getErrorCode LZ4_XXH32 LZ4_XXH32_canonicalFromHash LZ4_XXH32_copyState LZ4_XXH32_createState LZ4_XXH32_digest LZ4_XXH32_freeState LZ4_XXH32_hashFromCanonical LZ4_XXH32_reset LZ4_XXH32_update LZ4_XXH64 LZ4_XXH64_canonicalFromHash LZ4_XXH64_copyState LZ4_XXH64_createState LZ4_XXH64_digest LZ4_XXH64_freeState LZ4_XXH64_hashFromCanonical LZ4_XXH64_reset LZ4_XXH64_update LZ4_XXH_versionNumber LZ4_compressHC LZ4_compressHC2 LZ4_compressHC2_continue LZ4_compressHC2_limitedOutput LZ4_compressHC2_limitedOutput_continue LZ4_compressHC2_limitedOutput_withStateHC LZ4_compressHC2_withStateHC LZ4_compressHC_continue LZ4_compressHC_limitedOutput LZ4_compressHC_limitedOutput_continue LZ4_compressHC_limitedOutput_withStateHC LZ4_compressHC_withStateHC LZ4_compress_fast_force LZ4_compress_forceExtDict LZ4_createHC LZ4_decompress_safe_forceExtDict LZ4_freeHC LZ4_resetStreamStateHC LZ4_sizeofStreamStateHC LZ4_slideInputBufferHC LZ4_uncompress LZ4_uncompress_unknownOutputSize --- lib/Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/lib/Makefile b/lib/Makefile index c4bc7d2..9a794b8 100644 --- a/lib/Makefile +++ b/lib/Makefile @@ -95,7 +95,7 @@ ifneq (,$(filter Windows%,$(OS))) @$(CC) $(FLAGS) -DLZ4_DLL_EXPORT=1 -shared $^ -o dll\$@.dll dlltool -D dll\liblz4.dll -d dll\liblz4.def -l dll\liblz4.lib else - @$(CC) $(FLAGS) -shared $^ -fPIC $(SONAME_FLAGS) -o $@ + @$(CC) $(FLAGS) -shared $^ -fPIC -fvisibility=hidden $(SONAME_FLAGS) -o $@ @echo creating versioned links @ln -sf $@ liblz4.$(SHARED_EXT_MAJOR) @ln -sf $@ liblz4.$(SHARED_EXT) -- 2.7.4