banan-os/toolchain/build.sh

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#!/bin/bash
set -e
BINUTILS_VERSION="binutils-2.39"
BINUTILS_GIT="https://sourceware.org/git/binutils-gdb.git"
BINUTILS_BRANCH="binutils-2_39"
GCC_VERSION="gcc-12.2.0"
GCC_GIT="https://gcc.gnu.org/git/gcc.git"
GCC_BRANCH="releases/$GCC_VERSION"
GRUB_VERSION="grub-2.06"
if [[ -z $BANAN_SYSROOT ]]; then
echo "You must set the BANAN_SYSROOT environment variable" >&2
exit 1
fi
if [[ -z $BANAN_ROOT_DIR ]]; then
echo "You must set the BANAN_ROOT_DIR environment variable" >&2
exit 1
fi
if [[ -z $BANAN_BUILD_DIR ]]; then
echo "You must set the BANAN_BUILD_DIR environment variable" >&2
exit 1
fi
if [[ -z $BANAN_TOOLCHAIN_DIR ]]; then
echo "You must set the BANAN_TOOLCHAIN_DIR environment variable" >&2
exit 1
fi
if [[ -z $BANAN_TOOLCHAIN_PREFIX ]]; then
echo "You must set the BANAN_TOOLCHAIN_PREFIX environment variable" >&2
exit 1
fi
if [[ -z $BANAN_TOOLCHAIN_TRIPLE_PREFIX ]]; then
echo "You must set the BANAN_TOOLCHAIN_TRIPLE_PREFIX environment variable" >&2
exit 1
fi
if [[ -z $BANAN_ARCH ]]; then
echo "You must set the BANAN_ARCH environment variable" >&2
exit 1
fi
enter_clean_build () {
rm -rf build
mkdir build
cd build
}
build_binutils () {
echo "Building ${BINUTILS_VERSION}"
cd $BANAN_BUILD_DIR/toolchain
if [ ! -d $BINUTILS_VERSION ]; then
git clone --single-branch --branch $BINUTILS_BRANCH $BINUTILS_GIT $BINUTILS_VERSION
cd $BINUTILS_VERSION
git am $BANAN_TOOLCHAIN_DIR/$BINUTILS_VERSION.patch
fi
cd $BANAN_BUILD_DIR/toolchain/$BINUTILS_VERSION
enter_clean_build
../configure \
--target="$BANAN_TOOLCHAIN_TRIPLE_PREFIX" \
--prefix="$BANAN_TOOLCHAIN_PREFIX" \
--with-sysroot="$BANAN_SYSROOT" \
--disable-initfini-array \
--disable-nls \
--disable-werror
make -j $(nproc)
make install
}
build_gcc () {
echo "Building ${GCC_VERSION}"
cd $BANAN_BUILD_DIR/toolchain
if [ ! -d $GCC_VERSION ]; then
git clone --single-branch --branch $GCC_BRANCH $GCC_GIT $GCC_VERSION
cd $GCC_VERSION
git am $BANAN_TOOLCHAIN_DIR/$GCC_VERSION.patch
fi
cd $BANAN_BUILD_DIR/toolchain/$GCC_VERSION
enter_clean_build
../configure \
--target="$BANAN_TOOLCHAIN_TRIPLE_PREFIX" \
--prefix="$BANAN_TOOLCHAIN_PREFIX" \
--with-sysroot="$BANAN_SYSROOT" \
--disable-initfini-array \
--disable-nls \
--enable-languages=c,c++
make -j $(nproc) all-gcc
make -j $(nproc) all-target-libgcc CFLAGS_FOR_TARGET='-g -O2 -mcmodel=large -mno-red-zone'
make install-gcc install-target-libgcc
}
build_grub () {
echo "Building ${GRUB_VERSION}"
cd $BANAN_BUILD_DIR/toolchain
if [ ! -f ${GRUB_VERSION}.tar.xz ]; then
wget https://ftp.gnu.org/gnu/grub/${GRUB_VERSION}.tar.xz
fi
if [ ! -d $GRUB_VERSION ]; then
tar xvf ${GRUB_VERSION}.tar.xz
fi
cd $GRUB_VERSION
enter_clean_build
../configure \
--target="$BANAN_ARCH" \
--prefix="$BANAN_TOOLCHAIN_PREFIX" \
--with-platform="efi" \
--disable-werror
make -j $(nproc)
make install
}
build_libstdcpp () {
if ! [[ -d $BANAN_BUILD_DIR/toolchain/$GCC_VERSION/build ]]; then
echo "You have to build gcc first"
exit 1
fi
cd $BANAN_BUILD_DIR/toolchain/$GCC_VERSION/build
make -j $(nproc) all-target-libstdc++-v3
make install-target-libstdc++-v3
}
if [[ $# -ge 1 ]]; then
if [[ "$1" == "libstdc++" ]]; then
build_libstdcpp
exit 0
fi
echo "unrecognized arguments $@"
exit 1
fi
# NOTE: we have to manually create initial sysroot with libc headers
# since cmake cannot be invoked yet
echo "Syncing sysroot headers"
mkdir -p $BANAN_SYSROOT
sudo mkdir -p $BANAN_SYSROOT/usr/include
sudo rsync -a $BANAN_ROOT_DIR/libc/include/ $BANAN_SYSROOT/usr/include/
mkdir -p $BANAN_BUILD_DIR/toolchain
# Cleanup all old files from toolchain prefix
rm -rf $BANAN_TOOLCHAIN_PREFIX
build_binutils
build_gcc
build_grub