Static riscv

CMakeLists.txt

@@ -1,4 +1,13 @@
 cmake_minimum_required(VERSION 2.8)
+
+set(CMAKE_POSITION_INDEPENDENT_CODE ON)
+
+
+if(CMAKE_CROSSCOMPILING)
+    set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -ldl")
+    set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -ldl")
+endif()
+
 ADD_SUBDIRECTORY(exe)
 
 # If this variable is defined, a pure cmake build is done end-to-end with no luarocks

README.md

@@ -1,5 +1,33 @@
 [![Build Status](https://travis-ci.org/torch/distro.svg?branch=master)](https://travis-ci.org/torch/distro)
 
+
+# Torch for RISCV64
+
+Cross-compiled Torch framework for RISCV64 architecture.
+
+## Quick Setup
+
+```shell script
+git clone --recursive <repo-url> torch-riscv
+cd torch-riscv
+patch -p1 < torch-static.patch
+bash install-deps
+./install-x86.sh
+#The crosscompilation step might still use a standard gcc
+#on some steps so we need to manually re-wire it to the riscv one
+mkdir -p /tmp/cross-wrappers
+cp cross-gcc /tmp/cross-wrappers/gcc
+export PATH="/tmp/cross-wrappers:$PATH"
+./riscv64_cross_compilation_setup.sh
+```
+
+## Requirements
+
+- Ubuntu/Debian Linux
+- RISCV64 cross-compiler: `sudo apt install gcc-riscv64-linux-gnu`
+- Standard build tools: `sudo apt install cmake build-essential`
+
+
 #### NOTE: Torch is not actively developed anymore and is in maintenance mode.
 
 Self-contained Torch installation

cross-gcc

@@ -0,0 +1,2 @@
+#!/bin/bash
+exec riscv64-linux-gnu-gcc "$@"

install-x86.sh

@@ -0,0 +1,78 @@
+#!/usr/bin/env bash
+
+#This is a truncated version of the original install.sh script
+# which defaults to LUA51 and compiles luarocks to run natievly on the build machine
+
+SKIP_RC=0
+BATCH_INSTALL=0
+
+THIS_DIR=$(cd $(dirname $0); pwd)
+if [[ "$THIS_DIR" == *" "* ]]; then
+    echo "$THIS_DIR: Torch cannot install to a path containing whitespace.
+Please try a different path, one without any spaces."
+    exit 1
+fi
+PREFIX=${PREFIX:-"${THIS_DIR}/install"}
+TORCH_LUA_VERSION=${TORCH_LUA_VERSION:-"LUA51"} # by default install LUA51
+
+while getopts 'bsh' x; do
+    case "$x" in
+        h)
+            echo "usage: $0
+This script will install Torch and related, useful packages into $PREFIX.
+
+    -b      Run without requesting any user input (will automatically add PATH to shell profile)
+    -s      Skip adding the PATH to shell profile
+"
+            exit 2
+            ;;
+        b)
+            BATCH_INSTALL=1
+            ;;
+        s)
+            SKIP_RC=1
+            ;;
+    esac
+done
+
+# Scrub an anaconda/conda install, if exists, from the PATH.
+# It has a malformed MKL library (as of 1/17/2015)
+OLDPATH=$PATH
+if [[ $(echo $PATH | grep conda) ]]; then
+    export PATH=$(echo $PATH | tr ':' '\n' | grep -v "conda[2-9]\?" | uniq | tr '\n' ':')
+fi
+
+echo "Prefix set to $PREFIX"
+
+if [[ `uname` == 'Linux' ]]; then
+    export CMAKE_LIBRARY_PATH=$PREFIX/include:/opt/OpenBLAS/include:$PREFIX/lib:/opt/OpenBLAS/lib:$CMAKE_LIBRARY_PATH
+fi
+export CMAKE_PREFIX_PATH=$PREFIX
+
+git submodule update --init --recursive
+
+# If we're on OS X, use clang
+if [[ `uname` == "Darwin" ]]; then
+    # make sure that we build with Clang. CUDA's compiler nvcc
+    # does not play nice with any recent GCC version.
+    export CC=clang
+    export CXX=clang++
+fi
+# If we're on Arch linux, use gcc v5
+if [[ `uname -a` == *"ARCH"* ]]; then
+    path_to_gcc5=$(which gcc-5)
+    if [ -x "$path_to_gcc5" ]; then
+      export CC="$path_to_gcc5"
+    else
+      echo "Warning: GCC v5 not found. CUDA v8 is incompatible with GCC v6, if installation fails, consider running \$ pacman -S gcc5"
+    fi
+fi
+
+echo "Installing Lua version: ${TORCH_LUA_VERSION}"
+mkdir -p install
+mkdir -p build
+cd build
+
+cmake .. -DCMAKE_INSTALL_PREFIX="${PREFIX}" -DCMAKE_BUILD_TYPE=Release -DWITH_${TORCH_LUA_VERSION}=ON 2>&1 >>$PREFIX/install.log || exit 1
+(make 2>&1 >>$PREFIX/install.log  || exit 1) && (make install 2>&1 >>$PREFIX/install.log || exit 1)
+cd ..