Chapter 33 : Compile and Install GCC Pass-2 - Cross Compiling Temporary Tools

Hi,

In this chapter we are going to compile and install GCC package again, this is the second pass of the package.

Note :

- Please check the version of the package when you compile and install, at the time of writing the package was at version 10.2.0

- You should be logged in as lfs user, when you perform the actions described here.

- Change directory to the sources folder (/mnt/lfs/sources)

- Please check http://linuxfromscratch.org/lfs/view/stable/chapter06/gcc-pass2.html for more details.

Remove the directory gcc-10.2.0 if it's still exist in sources directory.

$ rm -rf gcc-10.2.0

Unpack the package tarball and change directory.

$ tar -xvf gcc-10.2.0.tar.xz

$ cd gcc-10.2.0

Unpack the packages and move it to the gcc-10.2.0 directory.

$ tar -xf ../mpfr-4.1.0.tar.xz

$ mv -v mpfr-4.1.0 mpfr

$ tar -xf ../gmp-6.2.0.tar.xz

$ mv -v gmp-6.2.0 gmp

$ tar -xf ../mpc-1.1.0.tar.gz

$ mv -v mpc-1.1.0 mpc

If building on x86_64, change the default directory name for 64-bit libraries to “lib”

$ case $(uname -m) in

  x86_64)

    sed -e '/m64=/s/lib64/lib/' -i.orig gcc/config/i386/t-linux64

  ;;

esac

Create the build directory and move into it.

$ mkdir -v build

$ cd build

Create a symlink that allows libgcc to be built with posix threads support

$ mkdir -pv $LFS_TGT/libgcc

$ ln -s ../../../libgcc/gthr-posix.h $LFS_TGT/libgcc/gthr-default.h

Preparing Gcc package for compilation.

../configure                                       \

    --build=$(../config.guess)                     \

    --host=$LFS_TGT                                \

    --prefix=/usr                                  \

    CC_FOR_TARGET=$LFS_TGT-gcc                     \

    --with-build-sysroot=$LFS                      \

    --enable-initfini-array                        \

    --disable-nls                                  \

    --disable-multilib                             \

    --disable-decimal-float                        \

    --disable-libatomic                            \

    --disable-libgomp                              \

    --disable-libquadmath                          \

    --disable-libssp                               \

    --disable-libvtv                               \

    --disable-libstdcxx                            \

    --enable-languages=c,c++

Compiling the package

$ make -j4

Installing the package

$ make DESTDIR=$LFS install

Creating a utility symlink.

$ ln -sv gcc $LFS/usr/bin/cc

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