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Meta: Add Clang support to the CMake build scripts
This commit is contained in:
Daniel Bertalan
Andreas Kling
parent
15e217ea68
commit
13e3df41de
Notes:
sideshowbarker
2024-07-18 07:16:08 +09:00
Author: https://github.com/BertalanD Commit: https://github.com/SerenityOS/serenity/commit/13e3df41def Pull-request: https://github.com/SerenityOS/serenity/pull/8718 Issue: https://github.com/SerenityOS/serenity/issues/363 Reviewed-by: https://github.com/gunnarbeutner ✅ Reviewed-by: https://github.com/nico
7 changed files with 128 additions and 22 deletions
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@ -22,6 +22,12 @@ set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
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set(SERENITY_ARCH "i686" CACHE STRING "Target architecture for SerenityOS.")
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if("${SERENITY_ARCH}" STREQUAL "i686")
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set(SERENITY_CLANG_ARCH "i386")
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else()
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set(SERENITY_CLANG_ARCH ${SERENITY_ARCH})
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endif()
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# Central location for all custom options used in the Serenity build.
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option(ENABLE_ADDRESS_SANITIZER "Enable address sanitizer testing in gcc/clang" OFF)
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option(ENABLE_KERNEL_ADDRESS_SANITIZER "Enable kernel address sanitizer testing in gcc/clang" OFF)
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@ -37,6 +43,7 @@ option(ENABLE_PCI_IDS_DOWNLOAD "Enable download of the pci.ids database at build
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option(ENABLE_USB_IDS_DOWNLOAD "Enable download of the usb.ids database at build time" ON)
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option(BUILD_LAGOM "Build parts of the system targeting the host OS for fuzzing/testing" OFF)
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option(ENABLE_KERNEL_LTO "Build the kernel with link-time optimization" OFF)
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option(USE_CLANG_TOOLCHAIN "Build the kernel with the experimental Clang toolchain" OFF)
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include(Meta/CMake/wasm_spec_tests.cmake)
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@ -60,18 +67,22 @@ add_custom_target(setup-and-run
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add_custom_target(image
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DEPENDS qemu-image
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)
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set(GCC_VERSION 11.2.0)
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set(LLVM_VERSION 12.0.1)
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add_custom_target(qemu-image
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COMMAND ${CMAKE_COMMAND} -E env "SERENITY_SOURCE_DIR=${CMAKE_SOURCE_DIR}" "SERENITY_ARCH=${SERENITY_ARCH}" ${CMAKE_SOURCE_DIR}/Meta/build-image-qemu.sh
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COMMAND ${CMAKE_COMMAND} -E env "SERENITY_SOURCE_DIR=${CMAKE_SOURCE_DIR}" "SERENITY_ARCH=${SERENITY_ARCH}" "USE_CLANG_TOOLCHAIN=$<BOOL:${USE_CLANG_TOOLCHAIN}>" "LLVM_VERSION=${LLVM_VERSION}" ${CMAKE_SOURCE_DIR}/Meta/build-image-qemu.sh
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BYPRODUCTS ${CMAKE_BINARY_DIR}/_disk_image
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USES_TERMINAL
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)
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add_custom_target(grub-image
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COMMAND ${CMAKE_COMMAND} -E env "SERENITY_SOURCE_DIR=${CMAKE_SOURCE_DIR}" "SERENITY_ARCH=${SERENITY_ARCH}" ${CMAKE_SOURCE_DIR}/Meta/build-image-grub.sh
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COMMAND ${CMAKE_COMMAND} -E env "SERENITY_SOURCE_DIR=${CMAKE_SOURCE_DIR}" "SERENITY_ARCH=${SERENITY_ARCH}" "USE_CLANG_TOOLCHAIN=$<BOOL:${USE_CLANG_TOOLCHAIN}>" "LLVM_VERSION=${LLVM_VERSION}" ${CMAKE_SOURCE_DIR}/Meta/build-image-grub.sh
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BYPRODUCTS ${CMAKE_BINARY_DIR}/grub_disk_image
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USES_TERMINAL
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)
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add_custom_target(extlinux-image
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COMMAND ${CMAKE_COMMAND} -E env "SERENITY_SOURCE_DIR=${CMAKE_SOURCE_DIR}" "SERENITY_ARCH=${SERENITY_ARCH}" ${CMAKE_SOURCE_DIR}/Meta/build-image-extlinux.sh
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COMMAND ${CMAKE_COMMAND} -E env "SERENITY_SOURCE_DIR=${CMAKE_SOURCE_DIR}" "SERENITY_ARCH=${SERENITY_ARCH}" "USE_CLANG_TOOLCHAIN=$<BOOL:${USE_CLANG_TOOLCHAIN}>" "LLVM_VERSION=${LLVM_VERSION}" ${CMAKE_SOURCE_DIR}/Meta/build-image-extlinux.sh
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BYPRODUCTS ${CMAKE_BINARY_DIR}/extlinux_disk_image
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USES_TERMINAL
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)
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@ -100,12 +111,13 @@ set(CMAKE_CXX_STANDARD 20)
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set(CMAKE_CXX_STANDARD_REQUIRED ON)
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set(CMAKE_CXX_EXTENSIONS OFF)
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add_compile_options(-Wno-literal-suffix)
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add_compile_options(-fsized-deallocation)
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if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU")
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add_compile_options(-Wno-literal-suffix)
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elseif ("${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang$")
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add_compile_options(-Wno-overloaded-virtual -Wno-user-defined-literals)
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add_compile_options(-Wno-overloaded-virtual)
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add_compile_options(-Wno-user-defined-literals)
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add_compile_options(-fconstexpr-steps=16777216)
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endif()
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if (ENABLE_ALL_DEBUG_FACILITIES)
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@ -159,10 +171,23 @@ set(CMAKE_STAGING_PREFIX ${CMAKE_BINARY_DIR}/Root)
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set(CMAKE_INSTALL_PREFIX ${CMAKE_BINARY_DIR}/Root)
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set(CMAKE_INSTALL_DATAROOTDIR ${CMAKE_BINARY_DIR}/Root/res)
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set(GCC_VERSION 11.2.0)
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if (${CMAKE_HOST_SYSTEM_NAME} MATCHES SerenityOS)
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message("Good job on building cmake!")
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elseif(USE_CLANG_TOOLCHAIN)
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set(TOOLCHAIN_ROOT ${CMAKE_SOURCE_DIR}/Toolchain/Local/clang/${SERENITY_ARCH}/)
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set(TOOLCHAIN_PATH ${TOOLCHAIN_ROOT}/bin)
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set(CMAKE_C_COMPILER ${TOOLCHAIN_PATH}/clang)
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set(CMAKE_CXX_COMPILER ${TOOLCHAIN_PATH}/clang++)
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set(CMAKE_ASM_COMPILER ${TOOLCHAIN_PATH}/clang)
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set(CMAKE_LINKER ${TOOLCHAIN_PATH}/ld.lld)
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set(CMAKE_RANLIB ${TOOLCHAIN_PATH}/llvm-ranlib)
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set(CMAKE_STRIP ${TOOLCHAIN_PATH}/llvm-strip)
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set(CMAKE_AR ${TOOLCHAIN_PATH}/llvm-ar)
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set(CMAKE_CXXFILT ${TOOLCHAIN_PATH}/llvm-cxxfilt)
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# FIXME: Persuade LLVM maintainers to add `--update-section` to llvm-objcopy, as it's required for the kernel symbol map.
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set(CMAKE_OBJCOPY ${TOOLCHAIN_ROOT}/binutils/bin/${SERENITY_ARCH}-pc-serenity-objcopy)
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else()
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set(TOOLCHAIN_ROOT ${CMAKE_SOURCE_DIR}/Toolchain/Local/${SERENITY_ARCH}/)
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set(TOOLCHAIN_PATH ${TOOLCHAIN_ROOT}/bin)
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@ -219,11 +244,9 @@ add_compile_options(-Wextra)
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# The following warnings are sorted by the "base" name (the part excluding the initial Wno or W).
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add_compile_options(-Wno-address-of-packed-member)
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add_compile_options(-Wcast-align)
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add_compile_options(-Wcast-qual)
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add_compile_options(-Wno-deprecated-copy)
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add_compile_options(-Wduplicated-cond)
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add_compile_options(-Wdouble-promotion)
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add_compile_options(-Wno-expansion-to-defined)
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add_compile_options(-Wformat=2)
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add_compile_options(-Wimplicit-fallthrough)
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@ -235,16 +258,52 @@ add_compile_options(-Wnon-virtual-dtor)
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add_compile_options(-Wno-unknown-warning-option)
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add_compile_options(-Wundef)
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add_compile_options(-Wunused)
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add_compile_options(-Wno-unused-private-field)
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add_compile_options(-Wno-unused-const-variable)
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add_compile_options(-Wno-unused-command-line-argument)
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add_compile_options(-Wwrite-strings)
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add_compile_options(-Wno-maybe-uninitialized)
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add_compile_options(-ffile-prefix-map=${CMAKE_SOURCE_DIR}=.)
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add_compile_options(-fno-exceptions)
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add_compile_options(-ftls-model=initial-exec)
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add_compile_options(-fno-semantic-interposition)
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add_compile_options(-fstack-clash-protection)
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add_compile_options(-fstack-protector-strong)
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add_compile_options(-g1)
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if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU")
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add_compile_options(-fstack-clash-protection)
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if (USE_CLANG_TOOLCHAIN)
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add_compile_options(-Wno-atomic-alignment)
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add_compile_options(-Wno-c99-designator)
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add_compile_options(-Wno-implicit-const-int-float-conversion)
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add_compile_options(-Wno-inconsistent-missing-override)
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add_compile_options(-Wno-tautological-constant-out-of-range-compare)
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add_compile_options(-Wno-unneeded-internal-declaration)
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add_compile_options(-Wno-unused-function)
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add_compile_options(-Wno-user-defined-literals)
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# Without the 'SHELL' prefix, this would get removed through de-duplication with the flags set for the host compiler.
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# Then, that would come before '-Wextra', so it would not negate the '-Woverloaded-virtual' set by '-Wextra'.
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add_compile_options(SHELL:-Wno-overloaded-virtual)
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add_compile_options(--sysroot=${CMAKE_BINARY_DIR}/Root)
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add_compile_options(--target=${SERENITY_CLANG_ARCH}-pc-serenity)
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add_compile_options(-fno-aligned-allocation)
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add_compile_options(-fconstexpr-steps=16777216)
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add_compile_options(-gdwarf-4)
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# FIXME: Why is Clang not picking up this path?
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link_directories(${TOOLCHAIN_ROOT}/lib/clang/${LLVM_VERSION}/lib/serenity)
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add_link_options(LINKER:--allow-shlib-undefined)
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else()
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add_compile_options(-Wcast-align)
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add_compile_options(-Wdouble-promotion)
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endif()
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if("${SERENITY_ARCH}" STREQUAL "i686")
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add_compile_options(-march=i686)
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else()
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add_compile_options(-march=x86-64)
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endif()
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add_compile_definitions(SANITIZE_PTRS)
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@ -256,6 +315,7 @@ if (ENABLE_COMPILETIME_FORMAT_CHECK)
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endif()
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add_link_options(--sysroot ${CMAKE_BINARY_DIR}/Root)
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add_link_options(-Wno-unused-command-line-argument)
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include_directories(Userland/Libraries/LibC)
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include_directories(Userland/Libraries/LibCrypt)
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@ -349,19 +349,32 @@ set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mno-80387 -mno-mmx -mno-sse -mno-sse2")
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-asynchronous-unwind-tables")
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fstack-protector-strong")
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-exceptions")
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -nodefaultlibs -nostdlib -nostdinc -nostdinc++")
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -nodefaultlibs -nostdlib")
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# Apply any flags that are only available on >= GCC 11.1
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if (CMAKE_COMPILER_IS_GNUCXX AND CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL 11.1)
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if (NOT USE_CLANG_TOOLCHAIN AND CMAKE_COMPILER_IS_GNUCXX AND CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL 11.1)
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# Zero any registers used within a function on return (to reduce data lifetime and ROP gadgets).
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fzero-call-used-regs=used-gpr")
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endif()
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if (NOT USE_CLANG_TOOLCHAIN)
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -nostdinc -nostdinc++")
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endif()
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macro (set_new_alignment alignment)
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if (USE_CLANG_TOOLCHAIN)
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add_compile_options(-faligned-allocation)
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add_compile_options(-fnew-alignment=${alignment})
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else()
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add_compile_options(-faligned-new=${alignment})
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endif()
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endmacro()
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if ("${SERENITY_ARCH}" STREQUAL "x86_64")
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mcmodel=large -mno-red-zone")
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -faligned-new=8")
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set_new_alignment(8)
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else()
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -faligned-new=4")
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set_new_alignment(4)
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endif()
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -static-pie")
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@ -412,16 +425,26 @@ add_compile_definitions(KERNEL)
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# It's needed because CLion doesn't understand the way we switch compilers mid-build.
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add_compile_definitions(__serenity__)
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if (USE_CLANG_TOOLCHAIN)
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add_link_options(LINKER:-z,notext)
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add_link_options(LINKER:--build-id=none)
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endif()
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add_library(kernel_heap STATIC ${KERNEL_HEAP_SOURCES})
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if (${CMAKE_HOST_SYSTEM_NAME} MATCHES SerenityOS)
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include_directories(/usr/local/include/c++/${GCC_VERSION}/)
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elseif (USE_CLANG_TOOLCHAIN)
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include_directories("${TOOLCHAIN_ROOT}/include/c++/v1")
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else()
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if (NOT EXISTS ${TOOLCHAIN_ROOT}/${SERENITY_ARCH}-pc-serenity/include/c++/${GCC_VERSION}/)
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message(FATAL_ERROR "Toolchain version ${GCC_VERSION} appears to be missing! Please run: Meta/serenity.sh rebuild-toolchain")
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endif()
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include_directories(${TOOLCHAIN_ROOT}/${SERENITY_ARCH}-pc-serenity/include/c++/${GCC_VERSION}/)
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include_directories(${TOOLCHAIN_ROOT}/${SERENITY_ARCH}-pc-serenity/include/c++/${GCC_VERSION}/${SERENITY_ARCH}-pc-serenity/)
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endif()
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if (NOT USE_CLANG_TOOLCHAIN)
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link_directories(${TOOLCHAIN_ROOT}/${SERENITY_ARCH}-pc-serenity/lib)
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link_directories(${TOOLCHAIN_ROOT}/lib/gcc/${SERENITY_ARCH}-pc-serenity/${GCC_VERSION}/)
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endif()
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@ -447,7 +470,13 @@ if (ENABLE_KERNEL_LTO)
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check_ipo_supported()
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set_property(TARGET Kernel PROPERTY INTERPROCEDURAL_OPTIMIZATION TRUE)
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endif()
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if (USE_CLANG_TOOLCHAIN)
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target_link_libraries(Kernel kernel_heap clang_rt.builtins-${SERENITY_CLANG_ARCH})
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else()
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target_link_libraries(Kernel kernel_heap gcc)
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endif()
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add_dependencies(Kernel kernel_heap)
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add_custom_command(
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@ -18,14 +18,18 @@ set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -static")
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add_executable(${PREKERNEL_TARGET} ${SOURCES})
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target_compile_options(${PREKERNEL_TARGET} PRIVATE -no-pie -fno-pic)
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target_link_options(${PREKERNEL_TARGET} PRIVATE LINKER:-T ${CMAKE_CURRENT_SOURCE_DIR}/linker.ld -nostdlib)
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target_link_options(${PREKERNEL_TARGET} PRIVATE LINKER:-T ${CMAKE_CURRENT_SOURCE_DIR}/linker.ld -nostdlib LINKER:--no-pie)
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set_target_properties(${PREKERNEL_TARGET} PROPERTIES LINK_DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/linker.ld)
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if (USE_CLANG_TOOLCHAIN)
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target_link_libraries(${PREKERNEL_TARGET} clang_rt.builtins-${SERENITY_CLANG_ARCH} c++abi)
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else()
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target_link_libraries(${PREKERNEL_TARGET} gcc supc++)
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endif()
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add_custom_command(
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TARGET ${PREKERNEL_TARGET} POST_BUILD
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COMMAND ${TOOLCHAIN_PREFIX}objcopy -O elf32-i386 ${CMAKE_CURRENT_BINARY_DIR}/${PREKERNEL_TARGET} ${CMAKE_CURRENT_BINARY_DIR}/Prekernel
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COMMAND ${CMAKE_OBJCOPY} -O elf32-i386 ${CMAKE_CURRENT_BINARY_DIR}/${PREKERNEL_TARGET} ${CMAKE_CURRENT_BINARY_DIR}/Prekernel
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BYPRODUCTS ${CMAKE_CURRENT_BINARY_DIR}/Prekernel
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)
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@ -51,6 +51,9 @@ function(serenity_libc target_name fs_name)
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add_library(${target_name} SHARED ${SOURCES})
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install(TARGETS ${target_name} DESTINATION usr/lib)
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set_target_properties(${target_name} PROPERTIES OUTPUT_NAME ${fs_name})
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if (USE_CLANG_TOOLCHAIN)
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target_link_libraries(${target_name} clang_rt.builtins-${SERENITY_CLANG_ARCH})
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endif()
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target_link_directories(LibC PUBLIC ${CMAKE_CURRENT_BINARY_DIR})
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serenity_generated_sources(${target_name})
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endfunction()
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@ -44,10 +44,11 @@ else
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rsync -aH --inplace Root/ mnt/
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chown -R 0:0 mnt/
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fi
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SERENITY_ARCH="${SERENITY_ARCH:-i686}"
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LLVM_VERSION="${LLVM_VERSION:-12.0.1}"
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if [ "$USE_CLANG_TOOLCHAIN" = "ON" ]; then
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if [ "$USE_CLANG_TOOLCHAIN" = "1" ]; then
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TOOLCHAIN_DIR="$SERENITY_SOURCE_DIR"/Toolchain/Local/clang/"$SERENITY_ARCH"
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mkdir -p mnt/usr/lib/clang/"$LLVM_VERSION"/lib/serenity
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$CP "$TOOLCHAIN_DIR"/lib/clang/"$LLVM_VERSION"/lib/serenity/* mnt/usr/lib/clang/"$LLVM_VERSION"/lib/serenity
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@ -32,6 +32,12 @@ set_source_files_properties (../Libraries/LibC/ssp.cpp PROPERTIES COMPILE_FLAGS
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"-fno-stack-protector")
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add_executable(Loader.so ${SOURCES})
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if (USE_CLANG_TOOLCHAIN)
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target_link_libraries(Loader.so clang_rt.builtins-${SERENITY_CLANG_ARCH})
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else()
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target_link_libraries(Loader.so gcc)
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endif()
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target_link_options(Loader.so PRIVATE LINKER:--no-dynamic-linker)
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install(TARGETS Loader.so RUNTIME DESTINATION usr/lib/)
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@ -110,7 +110,10 @@ add_custom_command(
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set(SOURCES ${LIBC_SOURCES} ${AK_SOURCES} ${ELF_SOURCES} ${ASM_SOURCES})
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if (NOT USE_CLANG_TOOLCHAIN)
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -static-libstdc++")
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endif()
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add_library(LibCStaticWithoutDeps STATIC ${SOURCES})
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target_link_libraries(LibCStaticWithoutDeps ssp)
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add_dependencies(LibCStaticWithoutDeps LibM LibSystem LibUBSanitizer)
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@ -133,7 +136,7 @@ set_property(
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PROPERTY ADDITIONAL_CLEAN_FILES ${TEMP_OBJ_FILES}
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)
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -static-libstdc++")
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -nolibc")
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serenity_libc(LibC c)
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add_dependencies(LibC crti crt0 crt0_shared crtn)
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target_link_libraries(LibC ssp system)
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