Fix Halide cross-compilation by dkurt · Pull Request #7073 · halide/Halide

dkurt · 2022-10-07T09:35:12Z

Hi! I tried cross-compile Halide with LLVM for RISC-V host and found that imported targets llvm-as and clang ignore CMAKE_CROSSCOMPILING_EMULATOR. So need to use it manually in the command.

Please let me know if you're interested in the complete cross-compilation guide.

alexreinking · 2022-10-07T15:39:56Z

Hmm, is there no way to import host-built LLVM tools, but target-built binaries?

alexreinking · 2022-10-07T15:42:43Z

found that imported targets llvm-as and clang ignore CMAKE_CROSSCOMPILING_EMULATOR.

Yes. That is how add_custom_command works... the intent is that imported targets that are used in custom commands should be built for the host.

dkurt · 2022-10-07T16:11:38Z

Hmm, is there no way to import host-built LLVM tools, but target-built binaries?

@alexreinking, I tried LLVM and Halide both with RISC-V toolchain in this scenario. So am I right that it's not necessary to cross-compile LLVM but use host version and cross-compile only Halide?

dkurt · 2022-10-07T16:23:58Z

Oh, you're absoultely right. I just had to specify ZLIB_LIBRARY to the right location and now it's OK.

alexreinking · 2022-10-07T16:35:13Z

Glad it's working. 🙂

In the future, please open an issue with at least an error message (but ideally a reproducer) first so we can evaluate whether a proposed fix is the best one.

dkurt · 2022-10-07T16:50:47Z

@alexreinking, actually, I think I got stuck again 😅. I tried two approaches:

x86 LLVM + RISC-V Halide (an error below)
RISC-V LLVM + RISC-V Halide (OK but requires the changes from this PR)

x86 LLVM + RISC-V Halide

Build LLVM

git clone --depth 1 --branch llvmorg-15.0.2 https://github.com/llvm/llvm-project.git

cmake -DCMAKE_BUILD_TYPE=Release \
      -DLLVM_ENABLE_PROJECTS="clang;lld;clang-tools-extra" \
      -DLLVM_TARGETS_TO_BUILD="X86;RISCV" \
      -DLLVM_ENABLE_TERMINFO=OFF -DLLVM_ENABLE_ASSERTIONS=ON \
      -DLLVM_ENABLE_EH=ON -DLLVM_ENABLE_RTTI=ON -DLLVM_BUILD_32_BITS=OFF \
      -S llvm-project/llvm -B llvm-build

cmake --build llvm-build -j$(nproc --all)
cmake --install llvm-build --prefix llvm-install

Install `zlib` (tested on Ubuntu 20.04):

sudo dpkg --add-architecture riscv64
sudo sed -i -E 's|^deb ([^ ]+) (.*)$|deb [arch=amd64] \1 \2\ndeb [arch=riscv64] http://ports.ubuntu.com/ubuntu-ports/ \2|' /etc/apt/sources.list
sudo apt-get update
sudo apt-get install -y zlib1g-dev:riscv64

Build a toolchain

git clone --depth 1 https://github.com/riscv-collab/riscv-gnu-toolchain

cd riscv-gnu-toolchain
git submodule init
git submodule update glibc
git submodule update gcc
cd glibc && git checkout 9ea3686 && cd ..
cd gcc && git checkout 13c83c4 && cd ..

./configure --prefix=/opt/riscv
sudo make linux -j$(nproc --all)
sudo make build-qemu -j$(nproc --all)

Build Halide

Using a file riscv64.toolchain.cmake:

set(CMAKE_SYSTEM_NAME Linux)
set(CMAKE_SYSTEM_PROCESSOR riscv64)

set(CMAKE_C_COMPILER riscv64-unknown-linux-gnu-gcc)
set(CMAKE_CXX_COMPILER riscv64-unknown-linux-gnu-g++)

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)

find_program(QEMU_RISCV64 qemu-riscv64)
if (QEMU_RISCV64)
    set(CMAKE_CROSSCOMPILING_EMULATOR ${QEMU_RISCV64})
endif ()

git clone --depth 1 -b riscv_update https://github.com/halide/Halide

export PATH=/opt/riscv/bin:$PATH

cmake -DLLVM_DIR=$(realpath llvm-install/lib/cmake/llvm) \
          -DCMAKE_BUILD_TYPE=Release \
          -DZLIB_LIBRARY=/usr/lib/riscv64-linux-gnu/libz.so \
          -DCMAKE_TOOLCHAIN_FILE=$(realpath riscv64.toolchain.cmake) \
          -DWITH_TESTS=OFF \
          -DWITH_TUTORIALS=OFF \
          -DWITH_PYTHON_BINDINGS=OFF \
          -S Halide -B halide-build-rvv

cmake --build halide-build-rvv -j$(nproc --all)

Error log

[ 98%] Linking CXX shared library libHalide.so
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a(MCJIT.cpp.o): Relocations in generic ELF (EM: 62)
/opt/riscv/lib/gcc/riscv64-unknown-linux-gnu/9.4.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /home/dkurt/llvm-install/lib/libLLVMMCJIT.a: error adding symbols: file in wrong format
collect2: error: ld returned 1 exit status
make[2]: *** [src/CMakeFiles/Halide.dir/build.make:3714: src/libHalide.so.15.0.0] Error 1
make[1]: *** [CMakeFiles/Makefile2:509: src/CMakeFiles/Halide.dir/all] Error 2
make: *** [Makefile:166: all] Error 2

dkurt · 2022-11-17T15:35:56Z

Sorry, still cannot cross-compile LLVM+Halide without these changes. Used crossbuild-essential-riscv64.

set(CMAKE_SYSTEM_NAME Linux)
set(CMAKE_SYSTEM_PROCESSOR riscv64)

set(CMAKE_C_COMPILER riscv64-linux-gnu-gcc)
set(CMAKE_CXX_COMPILER riscv64-linux-gnu-g++)

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)

find_program(QEMU_RISCV64 qemu-riscv64-static)
if (QEMU_RISCV64)
    set(CMAKE_CROSSCOMPILING_EMULATOR ${QEMU_RISCV64})
endif ()

LLVM:

cmake -DCMAKE_BUILD_TYPE=Release \
      -DCMAKE_TOOLCHAIN_FILE=$(realpath riscv64.toolchain.cmake) \
      -DLLVM_ENABLE_PROJECTS="clang;lld;clang-tools-extra" \
      -DLLVM_TARGETS_TO_BUILD="X86;RISCV" \
      -DLLVM_TARGET_ARCH="riscv64" \
      -DLLVM_HOST_TRIPLE="riscv64-unknown-linux-gnu" \
      -DLLVM_DEFAULT_TARGET_TRIPLE="riscv64-unknown-linux-gnu" \
      -DLLVM_ENABLE_TERMINFO=OFF -DLLVM_ENABLE_ASSERTIONS=ON \
      -DLLVM_ENABLE_EH=ON -DLLVM_ENABLE_RTTI=ON -DLLVM_BUILD_32_BITS=OFF \
      -S llvm-project/llvm -B llvm-build-riscv64

cmake --build llvm-build-riscv64/ -j4
cmake --install llvm-build-riscv64 --prefix llvm-install-riscv64

Halide:

cmake -DLLVM_DIR=$(realpath llvm-install-riscv64/lib/cmake/llvm) \
      -DClang_DIR=$(realpath llvm-install-riscv64/lib/cmake/clang) \
      -DCMAKE_BUILD_TYPE=Release \
      -DCMAKE_TOOLCHAIN_FILE=$(realpath riscv64.toolchain.cmake) \
      -DWITH_TESTS=OFF \
      -DWITH_TUTORIALS=OFF \
      -DWITH_PYTHON_BINDINGS=OFF \
      -S Halide -B halide-build-riscv64

cmake --build halide-build-riscv64 -j4

OK with this PR and /bin/sh: 1: /home/dkurt/llvm-install-riscv64/bin/clang-16: Exec format error without.

dkurt · 2023-02-06T11:51:54Z

Please review

Use CMAKE_CROSSCOMPILING_EMULATOR for llvm-as and clang imported targets

Use CMAKE_CROSSCOMPILING_EMULATOR for llvm-as and clang imported targets

37887e6

dkurt closed this Oct 7, 2022

dkurt deleted the fix_cross_compilation branch October 7, 2022 16:33

dkurt mentioned this pull request Oct 11, 2022

[RISC-V] "Unsupported CPU type" exception on riscv64 host #7078

Closed

dkurt mentioned this pull request Oct 27, 2022

[RISCV] Unsupported CPU type at RuntimeDyldELF::resolveRelocation llvm/llvm-project#58652

Closed

dkurt restored the fix_cross_compilation branch November 17, 2022 15:35

dkurt reopened this Nov 17, 2022

steven-johnson requested a review from halidebuildbots November 28, 2022 22:23

alexreinking requested changes Feb 6, 2023

View reviewed changes

Comment thread src/runtime/CMakeLists.txt

alexreinking approved these changes Feb 6, 2023

View reviewed changes

alexreinking merged commit a55a09a into halide:main Feb 7, 2023

ardier pushed a commit to ardier/Halide-mutation that referenced this pull request Mar 3, 2024

Fix Halide cross-compilation (halide#7073)

07c30ee

Use CMAKE_CROSSCOMPILING_EMULATOR for llvm-as and clang imported targets

Provide feedback

Saved searches

Use saved searches to filter your results more quickly

Uh oh!

Fix Halide cross-compilation#7073

Fix Halide cross-compilation#7073
alexreinking merged 1 commit into
halide:mainfrom
dkurt:fix_cross_compilation

dkurt commented Oct 7, 2022

Uh oh!

alexreinking commented Oct 7, 2022

Uh oh!

alexreinking commented Oct 7, 2022 •

edited

Loading

Uh oh!

dkurt commented Oct 7, 2022

Uh oh!

dkurt commented Oct 7, 2022

Uh oh!

alexreinking commented Oct 7, 2022

Uh oh!

dkurt commented Oct 7, 2022 •

edited

Loading

Build LLVM

Install `zlib` (tested on Ubuntu 20.04):

Build a toolchain

Build Halide

Uh oh!

dkurt commented Nov 17, 2022 •

edited

Loading

Uh oh!

dkurt commented Feb 6, 2023

Uh oh!

Uh oh!

Reviewers

Assignees

Labels

Projects

Milestone

Development

Uh oh!

2 participants

Uh oh!

Conversation

dkurt commented Oct 7, 2022

Uh oh!

alexreinking commented Oct 7, 2022

Uh oh!

alexreinking commented Oct 7, 2022 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

Uh oh!

dkurt commented Oct 7, 2022

Uh oh!

dkurt commented Oct 7, 2022

Uh oh!

alexreinking commented Oct 7, 2022

Uh oh!

dkurt commented Oct 7, 2022 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

Build LLVM

Install zlib (tested on Ubuntu 20.04):

Build a toolchain

Build Halide

Uh oh!

dkurt commented Nov 17, 2022 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

Uh oh!

dkurt commented Feb 6, 2023

Uh oh!

Uh oh!

Reviewers

Assignees

Labels

Projects

Milestone

Development

Uh oh!

2 participants

alexreinking commented Oct 7, 2022 •

edited

Loading

dkurt commented Oct 7, 2022 •

edited

Loading

Install `zlib` (tested on Ubuntu 20.04):

dkurt commented Nov 17, 2022 •

edited

Loading