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https://github.com/alexandrebobkov/ESP-Nodes.git
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85 lines
3.5 KiB
CMake
85 lines
3.5 KiB
CMake
if(CONFIG_CU_GCC_LTO_ENABLE)
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# Enable cmake interprocedural optimization(IPO) support to check if GCC supports link time optimization(LTO)
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cmake_policy(SET CMP0069 NEW)
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include(CheckIPOSupported)
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# Compare to "ar" and "ranlib", "gcc-ar" and "gcc-ranlib" integrate GCC LTO plugin
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set(CMAKE_AR ${_CMAKE_TOOLCHAIN_PREFIX}gcc-ar)
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set(CMAKE_RANLIB ${_CMAKE_TOOLCHAIN_PREFIX}gcc-ranlib)
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macro(cu_gcc_lto_set)
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check_ipo_supported(RESULT result)
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if(result)
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message(STATUS "GCC link time optimization(LTO) is enable")
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set(multi_value COMPONENTS DEPENDS)
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cmake_parse_arguments(LTO "" "" "${multi_value}" ${ARGN})
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# Use full format LTO object file
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set(GCC_LTO_OBJECT_TYPE "-ffat-lto-objects")
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# Set compression level 9(min:0, max:9)
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set(GCC_LTO_COMPRESSION_LEVEL "-flto-compression-level=9")
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# Set partition level max to removed used symbol
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set(GCC_LTO_PARTITION_LEVEL "-flto-partition=max")
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# Set mode "auto" to increase compiling speed
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set(GCC_LTO_COMPILE_OPTIONS "-flto=auto"
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${GCC_LTO_OBJECT_TYPE}
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${GCC_LTO_COMPRESSION_LEVEL})
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# Enable GCC LTO and plugin when linking stage
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set(GCC_LTO_LINK_OPTIONS "-flto"
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"-fuse-linker-plugin"
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${GCC_LTO_OBJECT_TYPE}
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${GCC_LTO_PARTITION_LEVEL})
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message(STATUS "GCC LTO for components: ${LTO_COMPONENTS}")
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foreach(c ${LTO_COMPONENTS})
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idf_component_get_property(t ${c} COMPONENT_LIB)
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target_compile_options(${t} PRIVATE ${GCC_LTO_COMPILE_OPTIONS})
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endforeach()
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message(STATUS "GCC LTO for dependencies: ${LTO_DEPENDS}")
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foreach(d ${LTO_DEPENDS})
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target_compile_options(${d} PRIVATE ${GCC_LTO_COMPILE_OPTIONS})
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endforeach()
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if("${IDF_VERSION_MAJOR}.${IDF_VERSION_MINOR}" VERSION_GREATER_EQUAL "4.4")
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target_link_libraries(${project_elf} PRIVATE ${GCC_LTO_LINK_OPTIONS})
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else()
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target_link_libraries(${project_elf} ${GCC_LTO_LINK_OPTIONS})
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endif()
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else()
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message(FATAL_ERROR "GCC link time optimization(LTO) is not supported")
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endif()
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endmacro()
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else()
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macro(cu_gcc_lto_set)
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message(STATUS "GCC link time optimization(LTO) is not enable")
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endmacro()
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endif()
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if(CONFIG_CU_GCC_STRING_1BYTE_ALIGN)
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macro(cu_gcc_string_1byte_align)
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message(STATUS "GCC string 1-byte align is enable")
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set(multi_value COMPONENTS DEPENDS)
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cmake_parse_arguments(STR_ALIGN "" "" "${multi_value}" ${ARGN})
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message(STATUS "GCC string 1-byte align for components: ${STR_ALIGN_COMPONENTS}")
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foreach(c ${STR_ALIGN_COMPONENTS})
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idf_component_get_property(t ${c} COMPONENT_LIB)
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target_compile_options(${t} PRIVATE "-malign-data=natural")
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endforeach()
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message(STATUS "GCC string 1-byte align for dependencies: ${STR_ALIGN_DEPENDS}")
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foreach(d ${STR_ALIGN_DEPENDS})
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target_compile_options(${d} PRIVATE "-malign-data=natural")
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endforeach()
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endmacro()
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else()
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macro(cu_gcc_string_1byte_align)
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message(STATUS "GCC string 1-byte align is not enable")
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endmacro()
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endif()
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