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Bash script for compiling a GCC (cross) compiler
#!/bin/sh
# Please install non-optional dependencies noted on this site:
# https://wiki.osdev.org/GCC_Cross-Compiler
# Compiler Configuration
CROSS_TARGET=x86_64-elf
GCC_VERSION="8.1.0" # GCC version
BIN_VERSION="2.30" # Binutils version
# Build Configuration
MAKE_JOBS=4
INSTALL_PATH="$HOME/opt/cross-x64"
TOOLCHAIN_DIR=$PWD # needs to be absolute
TOOLCHAIN_SRC=$TOOLCHAIN_DIR/src
TOOLCHAIN_GCC_BUILD_DIR=$TOOLCHAIN_DIR/build-gcc
TOOLCHAIN_BIN_BUILD_DIR=$TOOLCHAIN_DIR/build-binutils
GCC_PKG_NAME="gcc-$GCC_VERSION"
BIN_PKG_NAME="binutils-$BIN_VERSION"
GCC_SRC="https://ftp.gnu.org/gnu/gcc/$GCC_PKG_NAME/$GCC_PKG_NAME.tar.gz" # GCC download link
BIN_SRC="https://ftp.gnu.org/gnu/binutils/$BIN_PKG_NAME.tar.gz" # Binutils download link
# create source dir, clear its contents
mkdir -p $TOOLCHAIN_SRC
cd $TOOLCHAIN_SRC
touch surpress_warning
rm -r *
# download sources
echo "--> [STATUS] downloading sources..."
#if [ ! -f $PWD/$GCC_PKG_NAME.tar.gz ]; then
wget $GCC_SRC
#fi
#if [ ! -f $PWD/$BIN_PKG_NAME.tar.gz ]; then
wget $BIN_SRC
#fi
# is this needed?
export PATH="$INSTALL_PATH/bin:$PATH"
# unpack source archives
echo "--> [STATUS] unpacking archives..."
#if [ ! -d $PWD/$GCC_PKG_NAME ]; then
tar -zxvf $GCC_PKG_NAME.tar.gz
#fi
#if [ ! -d $PWD/$BIN_PKG_NAME ]; then
tar -zxvf $BIN_PKG_NAME.tar.gz
#fi
# build binutils
mkdir -p $TOOLCHAIN_BIN_BUILD_DIR
cd $TOOLCHAIN_BIN_BUILD_DIR
rm -r *
$TOOLCHAIN_SRC/$BIN_PKG_NAME/configure --target=$CROSS_TARGET --prefix="$INSTALL_PATH" --with-sysroot --disable-nls --disable-werror
make -j$MAKE_JOBS
make install
# build gcc
mkdir -p $TOOLCHAIN_GCC_BUILD_DIR
cd $TOOLCHAIN_GCC_BUILD_DIR
rm -r *
$TOOLCHAIN_SRC/$GCC_PKG_NAME/configure --target=$CROSS_TARGET --prefix="$INSTALL_PATH" --disable-nls --enable-languages=c,c++ --without-headers
make all-gcc -j$MAKE_JOBS
make all-target-libgcc -j$MAKE_JOBS
make install-gcc
make install-target-libgcc
echo "--> [STATUS] DONE!"
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