# Milestone 2 (Chapter 3, 4 & 5) ### Chapter 3 Packages and Patches using wget-list-systemd ``` sudo -i mkdir -v $LFS/sources chmod -v a+wt $LFS/sources exit cd $LFS/sources wget https://www.linuxfromscratch.org/lfs/view/stable-systemd/wget-list-systemd wget --input-file=wget-list-systemd --continue --directory-prefix=$LFS/sources du -h wget https://www.linuxfromscratch.org/lfs/view/stable-systemd/md5sums pushd $LFS/sources md5sum -c md5sums popd ```

Shows zlib not installed (This is due to the creators removing 1.12.2 due to a vulnerability)

#### Manual Download As of October 13, 2022 zlib version 1.2.12 has a vulnerability so I updated to 1.2.13. (Previous version was labeled as critically vulnerable) (This is to fix the python vulnerability) (This is to fix the python-docs vulnerability) #### Clean Run To get a clean run I had to modify the md5sum file.

How to get the format for the md5sum file

Clean run:

### Chapter 4 - Directory Structure for LFS File System (4.2) ``` sudo -i mkdir -pv $LFS/{etc,var} $LFS/usr/{bin,lib,sbin} for i in bin lib sbin; do ln -sv usr/$i $LFS/$i done case $(uname -m) in x86_64) mkdir -pv $LFS/lib64 ;; esac mkdir -pv $LFS/tools ```

### LFS User ``` sudo -i groupadd lfs useradd -s /bin/bash -g lfs -m -k /dev/null lfs passwd lfs ``` #### Permissions ``` chown -v lfs $LFS/{usr{,/*},lib,var,etc,bin,sbin,tools} case $(uname -m) in x86_64) chown -v lfs $LFS/lib64 ;; esac ``` #### Switch User ``` su - lfs ``` #### Bash Profile ``` cat > ~/.bash_profile << "EOF" exec env -i HOME=$HOME TERM=$TERM PS1='\u:\w\$ ' /bin/bash EOF ``` #### Bashrc ``` cat > ~/.bashrc << "EOF" set +h umask 022 LFS=/mnt/lfs LC_ALL=POSIX LFS_TGT=$(uname -m)-lfs-linux-gnu PATH=/usr/bin if [ ! -L /bin ]; then PATH=/bin:$PATH; fi PATH=$LFS/tools/bin:$PATH CONFIG_SITE=$LFS/usr/share/config.site export LFS LC_ALL LFS_TGT PATH CONFIG_SITE EOF ``` Getting rid of /etc/bashrc ``` [ ! -r /etc/bash.bashrc ] || mv -v /etc/bash.bashrc /etc/bash.bashrc.NOUSE ``` go back to lfs ``` su - lfs source ~/.bash_profile echo $LFS ```

### Chapter 5 - Part 3 - Tool Chain and Temporary Tools #### 5.2 Binutils Pass 1

``` cd $LFS/sources/ tar -xf binutils-2.39.tar.xz cd binutils-2.39 mkdir -v build cd build time { ../configure --prefix=$LFS/tools --with-sysroot=$LFS --target=$LFS_TGT --disable-nls --enable-gprofng=no --disable-werror && make && make install; } ```

#### 5.3.1 GCC-12.2.0 - Pass 1 ``` cd /mnt/lfs/sources/ tar -xf gcc-12.2.0.tar.xz cd gcc-12.2.0 tar -xf ../mpfr-4.1.0.tar.xz mv -v mpfr-4.1.0 mpfr tar -xf ../gmp-6.2.1.tar.xz mv -v gmp-6.2.1 gmp tar -xf ../mpc-1.2.1.tar.gz mv -v mpc-1.2.1 mpc ``` ``` case $(uname -m) in x86_64) sed -e '/m64=/s/lib64/lib/' \ -i.orig gcc/config/i386/t-linux64 ;; esac ``` ``` mkdir -v build cd build ../configure \ --target=$LFS_TGT \ --prefix=$LFS/tools \ --with-glibc-version=2.36 \ --with-sysroot=$LFS \ --with-newlib \ --without-headers \ --disable-nls \ --disable-shared \ --disable-multilib \ --disable-decimal-float \ --disable-threads \ --disable-libatomic \ --disable-libgomp \ --disable-libquadmath \ --disable-libssp \ --disable-libvtv \ --disable-libstdcxx \ --enable-languages=c,c++ make; make install cd .. cat gcc/limitx.h gcc/glimits.h gcc/limity.h > `dirname $($LFS_TGT-gcc -print-libgcc-file-name)`/install-tools/include/limits.h ``` ### 5.4. Linux-5.19.2 API Headers ``` cd $LFS/sources tar -xf linux-5.19.2.tar.xz cd linux-5.19.2 make mrproper make headers find usr/include -type f ! -name '*.h' -delete cp -rv usr/include $LFS/usr ``` ### 5.5. Glibc-2.36 ``` cd $LFS/sources tar -xf glibc-2.36.tar.xz cd glibc-2.36 case $(uname -m) in i?86) ln -sfv ld-linux.so.2 $LFS/lib/ld-lsb.so.3 ;; x86_64) ln -sfv ../lib/ld-linux-x86-64.so.2 $LFS/lib64 ln -sfv ../lib/ld-linux-x86-64.so.2 $LFS/lib64/ld-lsb-x86-64.so.3 ;; esac patch -Np1 -i ../glibc-2.36-fhs-1.patch mkdir build; cd build echo "rootsbindir=/usr/sbin" > configparms ../configure \ --prefix=/usr \ --host=$LFS_TGT \ --build=$(../scripts/config.guess) \ --enable-kernel=3.2 \ --with-headers=$LFS/usr/include \ libc_cv_slibdir=/usr/lib make make DESTDIR=$LFS install ```

``` rm a.out ``` ``` $LFS/tools/libexec/gcc/$LFS_TGT/12.2.0/install-tools/mkheaders ``` ### 5.6.1. Installation of Target Libstdc++ ``` cd $LFS/sources tar -xf gcc-12.2.0.tar.xz cd gcc-12.2.0 mkdir build; cd build ../libstdc++-v3/configure \ --host=$LFS_TGT \ --build=$(../config.guess) \ --prefix=/usr \ --disable-multilib \ --disable-nls \ --disable-libstdcxx-pch \ --with-gxx-include-dir=/tools/$LFS_TGT/include/c++/12.2.0 make make DESTDIR=$LFS install rm -v $LFS/usr/lib/lib{stdc++,stdc++fs,supc++}.la ``` ### Milestone 2 Test ``` cd /mnt/lfs/sources/glibc-2.36 nano milestone2.cpp ``` ```cpp #include using namespace std; int main() { cout << "testing milestone 2" << endl; return 0; } ``` ``` g++ milestone2.cpp -o milestone2 readelf -l milestone2 | grep ld-linux ./milestone2 rm milestone2* ```

--- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://paul-gleason.gitbook.io/sys-300-linux-from-scratch/milestones/milestone-2-chapter-3-4-and-5.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.