Difference between revisions of "Bare metal RISC-V GCC 9.3.0 cross compiler instructions"

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(→‎Build and install riscv-openocd (optional))
(→‎Add tools to PATH and set RISCV)
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  ./configure --prefix=$HOME/riscv --bindir $HOME/bin--enable-remote-bitbang --enable-jtag_vpi
 
  ./configure --prefix=$HOME/riscv --bindir $HOME/bin--enable-remote-bitbang --enable-jtag_vpi
 
  make -j8 && make install
 
  make -j8 && make install
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== Add tools to PATH and set RISCV ==
 
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printf 'PATH=$HOME/riscv/bin:$PATH\nRISCV=$HOME/riscv\nexport RISCV\n' >> $HOME/lib/profile.local
 
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Also, if you have installed spike from a repository, you might want to symlink it into <code>RISCV/bin</code>.
 
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ln -s /usr/local/bin/spike $HOME/riscv/bin/spike
 

Revision as of 12:48, 17 March 2020


Introduction

We'll build a GCC 9.3.0 targeting bare metal RISC-V.

Create directories

cd $HOME
mkdir -p src obj/{binutils-build,gcc-build,gdb-build,newlib-build}

Get GCC, GDB and binutils

curl https://ftp.gnu.org/gnu/binutils/binutils-2.34.tar.gz | tar -C $HOME/src -xf -
curl https://ftp.gnu.org/gnu/gdb/gdb-9.1.tar.gz | tar -C $HOME/src -xf -
curl https://ftp.gnu.org/gnu/gcc/gcc-9.3.0/gcc-9.3.0.tar.gz | tar -C $HOME/src -xf -
curl ftp://sourceware.org/pub/newlib/newlib-3.3.0.tar.gz | tar -C $HOME/src -xf -

Download prerequisites

cd $HOME/src/gcc-9.3.0
./contrib/download_prerequisites

Build and install binutils

cd $HOME/obj/binutils-build
../../src/binutils-2.34/configure --prefix $HOME/xgcc --bindir $HOME/bin --target riscv64-unknown-elf --enable-multilib
make -j8 && make install

Build and install gdb

cd $HOME/obj/gdb-build
../../src/gdb-9.1/configure --prefix $HOME/xgcc --bindir $HOME/bin --target riscv64-unknown-elf --enable-multilib
make -j8 && make install

Build and install bare metal gcc

cd $HOME/obj/gcc-build
../../src/gcc-9.3.0/configure --prefix $HOME/xgcc --bindir $HOME/bin --target riscv64-unknown-elf --enable-multilib --enable-languages=c --without-headers
make -j8 all-gcc && make install-gcc

Build and install newlib

cd $HOME/obj/newlib-build
../../src/newlib-3.3.0/configure --prefix $HOME/xgcc --bindir $HOME/bin --target riscv64-unknown-elf --enable-multilib
make -j8 all && make install

Build and install newlib gcc

rm -rf $HOME/obj/gcc-build && mkdir -p $HOME/obj/gcc-build
cd $HOME/obj/gcc-build
../../src/gcc-9.3.0/configure --prefix $HOME/xgcc --bindir $HOME/bin --target riscv64-unknown-elf --enable-multilib --enable-languages=c --with-newlib
make -j8 all && make install

Build and install riscv-openocd (optional)

cd $HOME/src
git clone --recursive git@github.com:riscv/riscv-openocd.git
cd $HOME/src/riscv-openocd
# brew install pkg-config libtool automake autoconf # required by bootstrap
./bootstrap
./configure --prefix=$HOME/riscv --bindir $HOME/bin--enable-remote-bitbang --enable-jtag_vpi
make -j8 && make install
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