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_SCRIPT_DIR ]]; then
echo "You must set the BANAN_SCRIPT_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
if [[ -z ${MAKE_JOBS:x} ]]; then
MAKE_JOBS="-j$(nproc)"
fi
if [ $BANAN_ARCH = "x86_64" ]; then
XCFLAGS="-g -O2 -mcmodel=large -mno-red-zone"
else
XCFLAGS="-g -O2"
fi
enter_clean_build () {
rm -rf build-$BANAN_ARCH
mkdir build-$BANAN_ARCH
cd build-$BANAN_ARCH
}
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 apply $BANAN_TOOLCHAIN_DIR/$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 \
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--disable-nls \
--disable-werror
make $MAKE_JOBS
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 apply $BANAN_TOOLCHAIN_DIR/$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 \
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--disable-nls \
--enable-languages=c,c++
make $MAKE_JOBS all-gcc
make $MAKE_JOBS all-target-libgcc CFLAGS_FOR_TARGET="$XCFLAGS"
make install-gcc
make 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 $MAKE_JOBS
make install
}
build_libstdcpp () {
if ! [[ -d $BANAN_BUILD_DIR/toolchain/$GCC_VERSION/build-$BANAN_ARCH ]]; then
echo "You have to build gcc first"
exit 1
fi
cd $BANAN_BUILD_DIR/toolchain/$GCC_VERSION/build-$BANAN_ARCH
make $MAKE_JOBS all-target-libstdc++-v3 CFLAGS_FOR_TARGET="$XCFLAGS"
make install-target-libstdc++-v3
}
# delete everything but toolchain
mkdir -p $BANAN_BUILD_DIR
find $BANAN_BUILD_DIR -mindepth 1 -maxdepth 1 ! -name toolchain -exec rm -r {} +
# NOTE: we have to manually create initial sysroot with libc headers
# since cmake cannot be invoked yet
echo "Creating dummy sysroot"
mkdir -p $BANAN_SYSROOT/usr
cp -r $BANAN_ROOT_DIR/libc/include $BANAN_SYSROOT/usr/include
mkdir -p $BANAN_BUILD_DIR/toolchain
build_binutils
build_gcc
# Grub is only needed for UEFI (x86_64)
if [ $BANAN_ARCH = "x86_64" ]; then
build_grub
fi
# delete sysroot and install libc
rm -r $BANAN_SYSROOT
$BANAN_SCRIPT_DIR/build.sh libc-install
build_libstdcpp