TOOLCHAIN: RISCV32-ELF =======================================================


PREPARE

  Adjust as required.
  
  $ export TARGET="riscv32-elf"
  $ export PREFIX="${HOME}/${TARGET}"
  $ export SOURCE="${PREFIX}/src"
  $ export PATH="${PREFIX}/bin:${PATH}"
  $ export KEYSERVER="hkps://keyserver.ubuntu.com"

  $ mkdir -p "$SOURCE"


BINUTILS

  PREPARE

    $ BINUTILS_LOCATION="https://ftp.gnu.org/gnu/binutils/"
    $ BINUTILS_VERSION="2.46.0"
    $ BINUTILS_PKG="binutils-${BINUTILS_VERSION}.tar.xz"
    $ BINUTILS_SIG="${BINUTILS_PKG}.sig"
    $ BINUTILS_KEY="3A24BC1E8FB409FA9F14371813FCEF89DD9E3C4F"

  DOWNLOAD

    $ cd "$SOURCE"
    $ wget "${BINUTILS_LOCATION}/${BINUTILS_PKG}" \
           "${BINUTILS_LOCATION}/${BINUTILS_SIG}"

  VERIFY

    $ gpg --keyserver "$KEYSERVER" --recv-keys "$BINUTILS_KEY"
    $ gpg --verify "$BINUTILS_SIG" "$BINUTILS_PKG"

  EXTRACT

    $ tar -xJf "$BINUTILS_PKG"
    $ cd "binutils-${BINUTILS_VERSION}"
    
  BUILD

    $ mkdir build
    $ cd build
    $ ../configure --target="$TARGET" --prefix="$PREFIX" --disable-multilib
    $ make
    $ make install


GDB

  PREPARE

    $ GDB_LOCATION="https://ftp.gnu.org/gnu/gdb/"
    $ GDB_VERSION="17.2"
    $ GDB_PKG="gdb-${GDB_VERSION}.tar.xz"
    $ GDB_SIG="${GDB_PKG}.sig"
    $ GDB_KEY="F40ADB902B24264AA42E50BF92EDB04BFF325CF3"

  DOWNLOAD

    $ cd "$SOURCE"
    $ wget "${GDB_LOCATION}/${GDB_PKG}" "${GDB_LOCATION}/${GDB_SIG}"

  VERIFY

    $ gpg --keyserver "$KEYSERVER" --recv-keys "$GDB_KEY"
    $ gpg --verify "$GDB_SIG" "$GDB_PKG"

  EXTRACT

    $ tar -xJf "$GDB_PKG"
    $ cd "gdb-${GDB_VERSION}"

  BUILD
  
    $ mkdir build
    $ cd build
    $ ../configure --target="$TARGET" --prefix="$PREFIX" \
                   --disable-gdbserver --disable-nls --disable-tui
    $ make
    $ make install


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