Add linux/riscv64 support (#170)

* Add linux/riscv64 support

* include in bootstrap

Author: 6543

README.md

@@ -198,7 +198,7 @@ argument:
 The supported targets are:
 
  * Platforms: `darwin`, `linux`, `windows`
- * Achitectures: `386`, `amd64`, `arm-5`, `arm-6`, `arm-7`, `arm64`, `mips`, `mipsle`, `mips64`, `mips64le`
+ * Achitectures: `386`, `amd64`, `arm-5`, `arm-6`, `arm-7`, `arm64`, `mips`, `mipsle`, `mips64`, `mips64le`, `riscv64`
 
 ### Platform versions
 

docker/base/Dockerfile

@@ -40,6 +40,7 @@ RUN \
     gcc-6-mips64el-linux-gnuabi64 g++-6-mips64el-linux-gnuabi64 libc6-dev-mips64el-cross \
     gcc-6-s390x-linux-gnu g++-6-s390x-linux-gnu libc6-dev-s390x-cross \
     gcc-6-powerpc64le-linux-gnu g++-6-powerpc64le-linux-gnu libc6-dev-powerpc-ppc64-cross \
+    gcc-8-riscv64-linux-gnu g++-8-riscv64-linux-gnu libc6-dev-riscv64-cross \
     gcc-6-multilib g++-6-multilib gcc-7-multilib g++-7-multilib gcc-mingw-w64 g++-mingw-w64 \
     clang llvm-dev libtool libxml2-dev uuid-dev libssl-dev swig openjdk-8-jdk pkg-config patch \
     make xz-utils cpio wget zip unzip p7zip git mercurial bzr texinfo help2man cmake curl mercurial && \

docker/base/bootstrap_pure.sh

@@ -51,6 +51,9 @@ GOOS=linux GOARCH=ppc64le CGO_ENABLED=1 CC=powerpc64le-linux-gnu-gcc-6 go instal
 echo "Bootstrapping linux/s390x..."
 GOOS=linux GOARCH=s390x CGO_ENABLED=1 CC=s390x-linux-gnu-gcc-6 go install std
 
+echo "Bootstrapping linux/riscv64..."
+GOOS=linux GOARCH=riscv64 CGO_ENABLED=1 CC=riscv64-linux-gnu-gcc-8 go install std
+
 echo "Bootstrapping windows/amd64..."
 GOOS=windows GOARCH=amd64 CGO_ENABLED=1 CC=x86_64-w64-mingw32-gcc go install std
 

docker/base/build.sh

@@ -329,6 +329,20 @@ for TARGET in $TARGETS; do
       CC=s390x-linux-gnu-gcc-6 CXX=s390x-linux-gnu-g++-6 GOOS=linux GOARCH=s390x CGO_ENABLED=1 go build $V $X $TP $MOD "${T[@]}" --ldflags="$V $LD" --gcflags="$GC" $BM -o "/build/$NAME-linux-s390x`extension linux`" $PACK_RELPATH
     fi
   fi
+  if ([ $XGOOS == "." ] || [ $XGOOS == "linux" ]) && ([ $XGOARCH == "." ] || [ $XGOARCH == "riscv64" ]); then
+    if [ "$GO_VERSION" -lt 180 ]; then
+      echo "Go version too low, skipping linux/riscv64..."
+    else
+      echo "Compiling for linux/riscv64..."
+      CC=riscv64-linux-gnu-gcc-8 CXX=riscv64-linux-gnu-g++-8 HOST=riscv64-linux-gnu PREFIX=/usr/riscv64-linux-gnu $BUILD_DEPS /deps ${DEPS_ARGS[@]}
+      export PKG_CONFIG_PATH=/usr/riscv64-linux-gnu/lib/pkgconfig
+
+      if [[ "$USEMODULES" == false ]]; then
+        CC=riscv64-linux-gnu-gcc-8 CXX=riscv64-linux-gnu-g++-8 GOOS=linux GOARCH=riscv64 CGO_ENABLED=1 go get $V $X "${T[@]}" --ldflags="$V $LD" --gcflags="$GC" -d $PACK_RELPATH
+      fi
+      CC=riscv64-linux-gnu-gcc-8 CXX=riscv64-linux-gnu-g++-8 GOOS=linux GOARCH=riscv64 CGO_ENABLED=1 go build $V $X $TP $MOD "${T[@]}" --ldflags="$V $LD" --gcflags="$GC" $BM -o "/build/$NAME-linux-riscv64`extension linux`" $PACK_RELPATH
+    fi
+  fi
   if ([ $XGOOS == "." ] || [ $XGOOS == "linux" ]) && ([ $XGOARCH == "." ] || [ $XGOARCH == "ppc64le" ]); then
     if [ "$GO_VERSION" -lt 170 ]; then
       echo "Go version too low, skipping linux/ppc64le..."