mirror of
https://github.com/eclipse-threadx/threadx.git
synced 2026-10-06 06:59:08 +08:00
Frédéric DesbiensandCopilot
d4b9448f84
Add cmake/riscv-none-elf-rv32imc.cmake targeting the xPack riscv-none-elf-gcc toolchain with rv32imc_zicsr/ilp32 ABI for bare-metal CORE-V MCU builds. Update cmake/riscv32-unknown-elf-rv32imc.cmake to correctly target rv32gc/ilp32d (matching riscv-collab riscv32-elf ABI) for QEMU regression tests. Update cmake/riscv64-gcc-rv32imc.cmake compat alias to include the new riscv-none-elf-rv32imc.cmake. Update CORE-V MCU example_build: build.sh exports xPack PATH, install_deps.sh downloads xPack 15.2.0-1, README.md reflects new toolchain name/path. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
72 lines
3.1 KiB
CMake
72 lines
3.1 KiB
CMake
# /***************************************************************************
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# * Copyright (C) 2026 Eclipse ThreadX contributors
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# *
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# * This program and the accompanying materials are made available under the
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# * terms of the MIT License which is available at
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# * https://opensource.org/licenses/MIT.
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# *
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# * SPDX-License-Identifier: MIT
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# ***************************************************************************/
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# CMake toolchain file for bare-metal RV32IMC targets (e.g. CORE-V MCU / CV32E40P)
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#
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# Uses the xPack riscv-none-elf-gcc toolchain:
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# https://github.com/xpack-dev-tools/riscv-none-elf-gcc-xpack
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#
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# This is a cross-platform (Linux/macOS/Windows), multilib-capable toolchain
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# analogous to arm-none-eabi-gcc. Its multilib includes rv32imc/ilp32
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# (soft-float), so -lgcc resolves correctly without any distro package.
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#
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# Install via: bash ports/risc-v32/gnu/example_build/core_v_mcu/install_deps.sh
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# (downloads the latest xPack release to /opt/xpack-riscv-none-elf-gcc/)
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#
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# Do NOT use riscv32-unknown-elf-gcc (riscv-collab riscv32-elf release) for
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# this target: that toolchain is built --disable-multilib --with-abi=ilp32d,
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# so its libgcc only provides ilp32d (hardware FP) helpers and cannot link
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# rv32imc/ilp32 soft-float objects.
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#
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# Target ISA : rv32imc_zicsr (integer, multiply, compressed, Zicsr)
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# ABI : ilp32 (32-bit int/long/ptr, soft-float)
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# Code model : medlow (addresses in [0, 2 GiB))
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set(CMAKE_SYSTEM_NAME Generic)
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set(CMAKE_SYSTEM_PROCESSOR riscv)
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set(THREADX_ARCH "risc-v32")
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set(THREADX_TOOLCHAIN "gnu")
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set(ARCH_FLAGS "-march=rv32imc_zicsr -mabi=ilp32 -mcmodel=medlow")
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set(CFLAGS "${ARCH_FLAGS}")
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set(ASFLAGS "${ARCH_FLAGS}")
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set(LDFLAGS "${ARCH_FLAGS}")
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# xPack riscv-none-elf multilib toolchain.
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set(CMAKE_C_COMPILER riscv-none-elf-gcc)
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set(CMAKE_CXX_COMPILER riscv-none-elf-g++)
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set(AS riscv-none-elf-as)
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set(AR riscv-none-elf-ar)
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set(OBJCOPY riscv-none-elf-objcopy)
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set(OBJDUMP riscv-none-elf-objdump)
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set(SIZE riscv-none-elf-size)
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set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
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set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
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set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
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set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
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# Use static library for compiler feature probing (no linker script yet)
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set(CMAKE_TRY_COMPILE_TARGET_TYPE STATIC_LIBRARY)
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set(CMAKE_C_FLAGS "${CFLAGS}" CACHE INTERNAL "c compiler flags")
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set(CMAKE_CXX_FLAGS "${CFLAGS}" CACHE INTERNAL "cxx compiler flags")
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set(CMAKE_ASM_FLAGS "${ASFLAGS} -D__ASSEMBLER__" CACHE INTERNAL "asm compiler flags")
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set(CMAKE_EXE_LINKER_FLAGS "${LDFLAGS}" CACHE INTERNAL "exe link flags")
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set(CMAKE_C_FLAGS_DEBUG "-Og -g -ggdb3" CACHE INTERNAL "c debug flags")
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set(CMAKE_CXX_FLAGS_DEBUG "-Og -g -ggdb3" CACHE INTERNAL "cxx debug flags")
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set(CMAKE_ASM_FLAGS_DEBUG "-g -ggdb3" CACHE INTERNAL "asm debug flags")
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set(CMAKE_C_FLAGS_RELEASE "-Os" CACHE INTERNAL "c release flags")
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set(CMAKE_CXX_FLAGS_RELEASE "-Os" CACHE INTERNAL "cxx release flags")
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set(CMAKE_ASM_FLAGS_RELEASE "" CACHE INTERNAL "asm release flags")
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