MaskRay updated this revision to Diff 343758. MaskRay added a comment. Don't affect -DBUILD_SHARED_LIBS=on
Repository: rG LLVM Github Monorepo CHANGES SINCE LAST ACTION https://reviews.llvm.org/D102090/new/ https://reviews.llvm.org/D102090 Files: clang/tools/clang-shlib/CMakeLists.txt llvm/cmake/modules/HandleLLVMOptions.cmake llvm/tools/llvm-shlib/CMakeLists.txt Index: llvm/tools/llvm-shlib/CMakeLists.txt =================================================================== --- llvm/tools/llvm-shlib/CMakeLists.txt +++ llvm/tools/llvm-shlib/CMakeLists.txt @@ -50,6 +50,9 @@ # Solaris ld does not accept global: *; so there is no way to version *all* global symbols set(LIB_NAMES -Wl,--version-script,${LLVM_LIBRARY_DIR}/tools/llvm-shlib/simple_version_script.map ${LIB_NAMES}) endif() + # Optimize function calls and global variable access for default visibility + # definitions to avoid PLT and reduce dynamic relocations. + target_link_options(LLVM PRIVATE LINKER:-Bsymbolic-functions) elseif("${CMAKE_SYSTEM_NAME}" STREQUAL "Darwin") set(LIB_NAMES -Wl,-all_load ${LIB_NAMES}) endif() Index: llvm/cmake/modules/HandleLLVMOptions.cmake =================================================================== --- llvm/cmake/modules/HandleLLVMOptions.cmake +++ llvm/cmake/modules/HandleLLVMOptions.cmake @@ -305,6 +305,7 @@ # On Windows all code is PIC. MinGW warns if -fPIC is used. else() add_flag_or_print_warning("-fPIC" FPIC) + add_flag_if_supported("-fno-semantic-interposition" FNO_SEMANTIC_INTERPOSITION) endif() # GCC for MIPS can miscompile LLVM due to PR37701. if(CMAKE_COMPILER_IS_GNUCXX AND LLVM_NATIVE_ARCH STREQUAL "Mips" AND Index: clang/tools/clang-shlib/CMakeLists.txt =================================================================== --- clang/tools/clang-shlib/CMakeLists.txt +++ clang/tools/clang-shlib/CMakeLists.txt @@ -48,3 +48,6 @@ ${_OBJECTS} LINK_LIBS ${_DEPS}) +# Optimize function calls and global variable access for default visibility +# definitions to avoid PLT and reduce dynamic relocations. +target_link_options(clang-cpp PRIVATE LINKER:-Bsymbolic-functions)
Index: llvm/tools/llvm-shlib/CMakeLists.txt =================================================================== --- llvm/tools/llvm-shlib/CMakeLists.txt +++ llvm/tools/llvm-shlib/CMakeLists.txt @@ -50,6 +50,9 @@ # Solaris ld does not accept global: *; so there is no way to version *all* global symbols set(LIB_NAMES -Wl,--version-script,${LLVM_LIBRARY_DIR}/tools/llvm-shlib/simple_version_script.map ${LIB_NAMES}) endif() + # Optimize function calls and global variable access for default visibility + # definitions to avoid PLT and reduce dynamic relocations. + target_link_options(LLVM PRIVATE LINKER:-Bsymbolic-functions) elseif("${CMAKE_SYSTEM_NAME}" STREQUAL "Darwin") set(LIB_NAMES -Wl,-all_load ${LIB_NAMES}) endif() Index: llvm/cmake/modules/HandleLLVMOptions.cmake =================================================================== --- llvm/cmake/modules/HandleLLVMOptions.cmake +++ llvm/cmake/modules/HandleLLVMOptions.cmake @@ -305,6 +305,7 @@ # On Windows all code is PIC. MinGW warns if -fPIC is used. else() add_flag_or_print_warning("-fPIC" FPIC) + add_flag_if_supported("-fno-semantic-interposition" FNO_SEMANTIC_INTERPOSITION) endif() # GCC for MIPS can miscompile LLVM due to PR37701. if(CMAKE_COMPILER_IS_GNUCXX AND LLVM_NATIVE_ARCH STREQUAL "Mips" AND Index: clang/tools/clang-shlib/CMakeLists.txt =================================================================== --- clang/tools/clang-shlib/CMakeLists.txt +++ clang/tools/clang-shlib/CMakeLists.txt @@ -48,3 +48,6 @@ ${_OBJECTS} LINK_LIBS ${_DEPS}) +# Optimize function calls and global variable access for default visibility +# definitions to avoid PLT and reduce dynamic relocations. +target_link_options(clang-cpp PRIVATE LINKER:-Bsymbolic-functions)
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