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-rw-r--r-- | doc/README.CrossCompiling | 174 |
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diff --git a/doc/README.CrossCompiling b/doc/README.CrossCompiling new file mode 100644 index 0000000..74f31ce --- /dev/null +++ b/doc/README.CrossCompiling @@ -0,0 +1,174 @@ +Intro +----- + +You can compile AbaOS from a 32-bit host or chroot (e.g. Arch32 chroot). +But you have to be extremly careful that nothing ceeps into the kernel +from the host system. + +You can also create a cross-compilation environment. Now, we don't need +a full fledged chain, linker and C compiler is enough. AbaOs has a small +integrated C library which is sufficient to build the kernel. + +gcc +--- + +mkdir -p $HOME/cross-compilers/gcc +cd $HOME/cross-compilers/gcc +wget https://ftp.gnu.org/gnu/binutils/binutils-2.28.tar.gz +tar xf binutils-2.28.tar.gz +mkdir binutils-build +cd binutils-build +../binutils-2.28/configure --target=i486-elf --prefix=$HOME/cross-compilers --disable-nls -v +make all +make check +make install +cd .. + +wget https://gmplib.org/download/gmp/gmp-6.1.2.tar.lz +tar xf gmp-6.1.2.tar.lz +mkdir gmp-build +cd gmp-build +../gmp-6.1.2/configure --build=i486-elf --host=i486-elf --prefix=$HOME/cross-compilers +make all +make check +make install +cd .. + +wget http://www.mpfr.org/mpfr-current/mpfr-3.1.5.tar.gz +tar xf mpfr-3.1.5.tar.gz +mkdir mpfr-build +cd mpfr-build +../mpfr-3.1.5/configure --build=i486-elf --host=i486-elf --prefix=$HOME/cross-compilers \ + --with-gmp=$HOME/cross-compilers +make all +make check +make install +cd .. + +wget ftp://ftp.gnu.org/gnu/mpc/mpc-1.0.3.tar.gz +tar xf mpc-1.0.3.tar.gz +mkdir mpc-build +cd mpc-build +../mpc-1.0.3/configure --host=i486-elf --target=i486-elf \ + --prefix=$HOME/cross-compilers \ + --with-gmp=$HOME/cross-compilers \ + --with-mpfr=$HOME/cross-compilers +make all +make check +make install +cd .. + +wget ftp://ftp.mpi-sb.mpg.de/pub/gnu/mirror/gcc.gnu.org/pub/gcc/releases/gcc-7.1.0/gcc-7.1.0.tar.gz +tar zxf gcc-7.1.0.tar.gz +mkdir gcc-build +cd gcc-build +../gcc-7.1.0/configure --target=i486-elf --prefix=$HOME/cross-compilers \ + --with-gnu-as --with-gnu-ld \ + --disable-nls --enable-languages=c --disable-libgcj --without-headers \ + --with-gmp=$HOME/cross-compilers \ + --with-mpfr=$HOME/cross-compilers \ + --with-mpc=$HOME/cross-compilers +make all-gcc +make all-target-libgcc +make install-gcc +make install-target-libgcc + +Compile abaos and libc tests with: + +setenv PATH "${PATH}:$HOME/cross-compilers" +make clean all CC=i486-elf-gcc LD=i486-elf-ld + + +tcc +--- + +mkdir -p $HOME/cross-compilers/tcc +cd $HOME/cross-compilers/tcc +wget https://ftp.gnu.org/gnu/binutils/binutils-2.28.tar.gz +tar xf binutils-2.28.tar.gz +mkdir binutils-build +cd binutils-build +../binutils-2.28/configure --target=i486-elf --prefix=$HOME/cross-compilers --disable-nls -v +make all +make check +make install +cd .. + +mkdir -p $HOME/cross-compilers/tcc +cd $HOME/cross-compilers/tcc +git clone git://repo.or.cz/tinycc.git +cd tinycc +./configure --cpu=i386 --enable-cross --prefix=$HOME/cross-compilers +make +cd .. + +Compile abaos and libc tests with: + +setenv PATH "${PATH}:$HOME/cross-compilers" +make clean all CC=i386-tcc LD=i486-elf-ld + +pcc +--- + +mkdir -p $HOME/cross-compilers/pcc +cd $HOME/cross-compilers/pcc +wget https://ftp.gnu.org/gnu/binutils/binutils-2.28.tar.gz +tar xf binutils-2.28.tar.gz +mkdir binutils-build +cd binutils-build +../binutils-2.28/configure --target=i486-unknown-linux-gnu --prefix=$HOME/cross-compilers --disable-nls -v +make all +make check +make install +cd .. + +mkdir -p $HOME/cross-compilers/pcc +cvs -d :pserver:anonymous@pcc.ludd.ltu.se:/cvsroot co pcc-libs +mkdir pcc-libs-build +cd pcc-libs-build +../pcc-libs/configure --target=i486-unknown-linux-gnu --prefix=$HOME/cross-compilers +make +make install +cd .. + +cvs -d :pserver:anonymous@pcc.ludd.ltu.se:/cvsroot co pcc +mkdir pcc-build +cd pcc-build +../pcc/configure --target=i486-unknown-linux-gnu --prefix=$HOME/cross-compilers +make +make install + +Compile abaos and libc tests with: + +setenv PATH "${PATH}:$HOME/cross-compilers" +make clean all CC=i486-unknown-linux-gnu-pcc LD=i486-unknown-linux-gnu-ld + +clang +----- + +Clang is easy, usually it already supports common targets. Just +for the kernel we need a i486 linker from binutils: + +mkdir -p $HOME/cross-compilers/pcc +cd $HOME/cross-compilers/pcc +wget https://ftp.gnu.org/gnu/binutils/binutils-2.28.tar.gz +tar xf binutils-2.28.tar.gz +mkdir binutils-build +cd binutils-build +../binutils-2.28/configure --target=i486-unknown-linux-gnu --prefix=$HOME/cross-compilers --disable-nls -v +make all +make check +make install +cd .. + +Compile abaos and libc tests with: + +setenv PATH "${PATH}:$HOME/cross-compilers" +make clean all run-qemu CC='clang -target i386-pc-none-abi' LD=i486-unknown-linux-gnu-ld + +Links +----- + +https://ftp.gnu.org/gnu/binutils/ +http://wiki.osdev.org/Target_Triplet +http://wiki.osdev.org/GCC_Cross-Compiler |