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| author | Richard Qin <richard.qin.x@gmail.com> | 2026-03-15 16:07:39 +0800 |
|---|---|---|
| committer | Richard Qin <richard.qin.x@gmail.com> | 2026-03-15 16:07:39 +0800 |
| commit | f6441a2e6f901748b504ef93872649c9463a404e (patch) | |
| tree | 54332548c2e2b74b44aba646a09cffb543856050 /rv64cpu/tools/toolchain-riscv64.cmake | |
| download | rcc-project-f6441a2e6f901748b504ef93872649c9463a404e.tar.gz rcc-project-f6441a2e6f901748b504ef93872649c9463a404e.tar.xz | |
initial commit: project architecture
Diffstat (limited to 'rv64cpu/tools/toolchain-riscv64.cmake')
| -rw-r--r-- | rv64cpu/tools/toolchain-riscv64.cmake | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/rv64cpu/tools/toolchain-riscv64.cmake b/rv64cpu/tools/toolchain-riscv64.cmake new file mode 100644 index 0000000..c177fda --- /dev/null +++ b/rv64cpu/tools/toolchain-riscv64.cmake @@ -0,0 +1,36 @@ +# ─── RISC-V 64 Bare-Metal Toolchain File ───────────────────────────────────────── +# +# Usage: cmake -B build_sw -DCMAKE_TOOLCHAIN_FILE=tools/toolchain-riscv64.cmake +# + +set(CMAKE_SYSTEM_NAME Generic) +set(CMAKE_SYSTEM_PROCESSOR riscv64) + +# ─── Toolchain binaries ───────────────────────────────────────────────────────── +set(CROSS_PREFIX "riscv64-unknown-elf-" CACHE STRING "Cross compiler prefix") + +set(CMAKE_C_COMPILER ${CROSS_PREFIX}gcc) +set(CMAKE_CXX_COMPILER ${CROSS_PREFIX}g++) +set(CMAKE_ASM_COMPILER ${CROSS_PREFIX}gcc) +set(CMAKE_OBJCOPY ${CROSS_PREFIX}objcopy) +set(CMAKE_OBJDUMP ${CROSS_PREFIX}objdump) +set(CMAKE_SIZE ${CROSS_PREFIX}size) + +# ─── Architecture flags ───────────────────────────────────────────────────────── +set(RISCV_ARCH "rv64ima" CACHE STRING "RISC-V ISA string") +set(RISCV_ABI "lp64" CACHE STRING "RISC-V ABI") + +set(CMAKE_C_FLAGS_INIT "-march=${RISCV_ARCH} -mabi=${RISCV_ABI} -nostdlib -ffreestanding -fno-builtin -mcmodel=medany") +set(CMAKE_CXX_FLAGS_INIT "${CMAKE_C_FLAGS_INIT} -fno-exceptions -fno-rtti") +set(CMAKE_ASM_FLAGS_INIT "-march=${RISCV_ARCH} -mabi=${RISCV_ABI}") + +set(CMAKE_EXE_LINKER_FLAGS_INIT "-nostartfiles -static -Wl,--gc-sections") + +# ─── Search paths ─────────────────────────────────────────────────────────────── +set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER) +set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY) +set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY) +set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY) + +# ─── Disable compiler checks (bare-metal can't run test binaries) ──────────────── +set(CMAKE_TRY_COMPILE_TARGET_TYPE STATIC_LIBRARY) |