Creating MIPS cross compiler for ARM architecture

mips-cross-compiler.sh

mkdir crossbuild
cd crossbuild
mkdir gcc
mkdir eglibc
mkdir binutils
mkdir install
mkdir sysroot

export prefix=/home/pi/crossbuild/install
export sysroot=/home/pi/crossbuild/sysroot
export host=arm-linux-gnueabihf
export build=arm-linux-gnueabihf
export target=mips-linux
export linuxarch=mips

sudo apt install -y git subversion tmux

# Testing with gcc 6.3.0 as the gcc version of Raspbian is 6.3.0
wget ftp://ftp.gnu.org/gnu/gcc/gcc-6.3.0/gcc-6.3.0.tar.gz -O gcc/gcc-6.3.0.tar.gz
# Testing binutils 2.28 as 'ld -v'
wget ftp://ftp.gnu.org/gnu/binutils/binutils-2.28.1.tar.gz -O binutils/binutils-2.28.1.tar.gz
# Using trunk of eglibc
mkdir eglibc
cd eglibc
svn co svn://svn.eglibc.org/trunk eglibc
cd ~/crossbuild/
# Using kernel 4.14.34 as per the output of 'uname -r'
wget https://cdn.kernel.org/pub/linux/kernel/v4.x/linux-4.14.34.tar.xz

cd binutils
tar -xf binutils-2.28.1.tar.gz
mkdir build
cd build
../binutils-2.28.1/configure --target=$target --prefix=$prefix --with-sysroot=$sysroot
make
make install

cd ~/crossbuild/gcc/
tar -xf gcc-6.3.0.tar.gz
mkdir build
cd gcc-6.3.0/
./contrib/download_prerequisites
cd ../build/
../gcc-6.3.0/configure --target=$target --prefix=$prefix --without-headers --with-newlib --disable-shared --disable-threads --disable-libssp --disable-libgomp --disable-libmudflap --enable-languages=c
PATH=$prefix/bin:$PATH make all-gcc
PATH=$prefix/bin:$PATH make install-gcc

cd ~/crossbuild/
tar -xf linux-4.14.34.tar.xz
cd linux-4.14.34/
PATH=$prefix/bin:$PATH make headers_install CROSS_COMPILE=$target- INSTALL_HDR_PATH=$sysroot/usr ARCH=$linuxarch

cd ~/crossbuild/eglibc/
cp -r eglibc/ports/ eglibc/libc/
mkdir build
cd build
sudo apt install -y gawk
BUILD_CC=gcc CC=$prefix/bin/$target-gcc AR=$prefix/bin/$target-ar RANLIB=$prefix/bin/$target-ranlib ../eglibc/libc/configure --prefix=/usr --with-headers=$sysroot/usr/include --build=$build --host=$target --disable-profile --without-gd --without-cvs --enable-add-ons libc_cv_forced_unwind=yes
make install-headers install_root=$sysroot \install-bootstrap-headers=yes
mkdir -p $sysroot/usr/lib
make csu/subdir_lib
cd csu/
cp crt1.o crti.o crtn.o $sysroot/usr/lib
$prefix/bin/$target-gcc -nostdlib -nostartfiles -shared -x c /dev/null -o $sysroot/usr/lib/libc.so

cd ~/crossbuild/
cd gcc/build/
rm -rf *
../gcc-6.3.0/configure --target=$target --prefix=$prefix --with-sysroot=$sysroot --disable-libssp --disable-libgomp --disable-libmudflap --enable-languages=c
PATH=$prefix/bin:$PATH make
PATH=$prefix/bin:$PATH make install

cd ~/crossbuild
cd eglibc/build
rm -rf *
sudo apt install gperf
BUILD_CC=gcc CC=$prefix/bin/$target-gcc AR=$prefix/bin/$target-ar RANLIB=$prefix/bin/$target-ranlib ../eglibc/libc/configure --prefix=/usr --with-headers=$sysroot/usr/include --build=$build --host=$target --disable-profile --without-gd --without-cvs --enable-add-ons libc_cv_forced_unwind=yes
PATH=$prefix/bin:$PATH make
PATH=$prefix/bin:$PATH make install install_root=$sysroot

cd ~/crossbuild
cd gcc/build
rm -rf *
../gcc-6.3.0/configure --target=$target --prefix=$prefix --with-sysroot=$sysroot --disable-libssp --disable-libgomp --disable-libmudflap --enable-languages=c
PATH=$prefix/bin:$PATH make
PATH=$prefix/bin:$PATH make install

cd ~/crossbuild
cp -d $prefix/$target/lib/libgcc_s.so* $sysroot/lib