Please prepare at least 2 hours or else
Otherwise good luck :grinning::grinning::grinning:
rootCheck mounted or not
findmnt | grep $LFS
Output if LFS IS MOUNTED:
├─/mnt/lfs /dev/sdb2 ext4 rw,relatime
│ ├─/mnt/lfs/dev udev devtmpfs rw,nosuid,relatime,size=1981744k,nr_inodes=495436,mode=755,inode64
│ │ ├─/mnt/lfs/dev/pts devpts devpts rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000
│ │ └─/mnt/lfs/dev/shm tmpfs tmpfs rw,nosuid,nodev,relatime,inode64
│ ├─/mnt/lfs/proc proc proc rw,relatime
│ ├─/mnt/lfs/sys sysfs sysfs rw,relatime
│ └─/mnt/lfs/run tmpfs tmpfs rw,relatime,inode64
Output if LFS IS NOT MOUNTED:
├─/mnt/lfs /dev/sdb2 ext4 rw,relatime
Mount virtual filesystem if not mounted
mkdir -pv $LFS/{dev,proc,sys,run}
mount -v --bind /dev $LFS/dev
mount -v --bind /dev/pts $LFS/dev/pts
mount -vt proc proc $LFS/proc
mount -vt sysfs sysfs $LFS/sys
mount -vt tmpfs tmpfs $LFS/run
if [ -h $LFS/dev/shm ]; then
mkdir -pv $LFS/$(readlink $LFS/dev/shm)
else
mount -t tmpfs -o nosuid,nodev tmpfs $LFS/dev/shm
fi
Enter chroot environment
chroot "$LFS" /usr/bin/env -i \
HOME=/root \
TERM="$TERM" \
PS1='(lfs chroot) \u:\w\$ ' \
PATH=/usr/bin:/usr/sbin \
/bin/bash --login
When you want to exit just do this
exit
Make sure you are in
(lfs chroot) root:/# |
Create version-check.sh (See Section 7.12T on creating version-check.sh)
Run version-check.sh to see version requirements(Make sure all is OK)
bash version-check.sh
Check your “NPROC”, and “MAKEFLAGS” environment variables
echo "NPROC=$(nproc) MAKEFLAGS=$MAKEFLAGS"
Set MAKEFLAGS variable
export MAKEFLAGS='-j4'
See Section 7.13.2 on backing up the LFS system.
Some performance tips to hopefully increase usage
Using a user logged in to the same host, run top and press 1
On the top, it will show CPU usage for each of the cores
Make sure all cores are running (see value of us != 0.0).
If not, either run
export MAKEFLAGS='-j4'
or replace
su tester -c "PATH=$PATH make -k check"
with
su tester -c "PATH=$PATH make -j4 -k check"
NOTE: You shouldn’t run top for extended periods of time while installing gcc as it eats into CPU usage.
Approximate time required: 113.81 SBU
cd /sources/
time {
tar xf gcc-*.tar.*
cd gcc-*/
case $(uname -m) in
x86_64)
sed -e '/m64=/s/lib64/lib/' \
-i.orig gcc/config/i386/t-linux64
;;
esac
mkdir -v build
cd build
../configure --prefix=/usr \
LD=ld \
--enable-languages=c,c++ \
--enable-default-pie \
--enable-default-ssp \
--disable-multilib \
--disable-bootstrap \
--disable-fixincludes \
--with-system-zlib
make
ulimit -s 32768
chown -Rv tester .
su tester -c "PATH=$PATH make -k check"
../contrib/test_summary | grep '^FAIL:'
}
Expected output of ... test_summary | grep ...
FAIL: g++.dg/asan/asan_test.C -O2 AddressSanitizer_StrtollOOBTest Strtol(array + 3, NULL, 0) execution test
FAIL: g++.dg/asan/asan_test.C -O2 AddressSanitizer_StrtollOOBTest Strtol(array - 1, NULL, 0) execution test
FAIL: g++.dg/asan/asan_test.C -O2 AddressSanitizer_StrtollOOBTest Strtol(array, NULL, 0) execution test
FAIL: g++.dg/asan/asan_test.C -O2 AddressSanitizer_StrtollOOBTest Strtol(array, NULL, 36) execution test
FAIL: g++.dg/asan/asan_test.C -O2 AddressSanitizer_StrtollOOBTest Strtol(array, NULL, 0) execution test
FAIL: g++.dg/asan/asan_test.C -O2 AddressSanitizer_StrtollOOBTest Strtol(array, NULL, 0) execution test
FAIL: g++.dg/asan/asan_test.C -O2 AddressSanitizer_StrtollOOBTest Strtol(array, NULL, 0) execution test
FAIL: g++.dg/asan/asan_test.C -O2 AddressSanitizer_StrtolOOBTest Strtol(array + 3, NULL, 0) execution test
FAIL: g++.dg/asan/asan_test.C -O2 AddressSanitizer_StrtolOOBTest Strtol(array - 1, NULL, 0) execution test
FAIL: g++.dg/asan/asan_test.C -O2 AddressSanitizer_StrtolOOBTest Strtol(array, NULL, 0) execution test
FAIL: g++.dg/asan/asan_test.C -O2 AddressSanitizer_StrtolOOBTest Strtol(array, NULL, 36) execution test
FAIL: g++.dg/asan/asan_test.C -O2 AddressSanitizer_StrtolOOBTest Strtol(array, NULL, 0) execution test
FAIL: g++.dg/asan/asan_test.C -O2 AddressSanitizer_StrtolOOBTest Strtol(array, NULL, 0) execution test
FAIL: g++.dg/asan/asan_test.C -O2 AddressSanitizer_StrtolOOBTest Strtol(array, NULL, 0) execution test
FAIL: g++.dg/asan/interception-malloc-test-1.C -O0 execution test
FAIL: g++.dg/asan/interception-malloc-test-1.C -O1 execution test
FAIL: g++.dg/asan/interception-malloc-test-1.C -O2 execution test
FAIL: g++.dg/asan/interception-malloc-test-1.C -O3 -g execution test
FAIL: g++.dg/asan/interception-malloc-test-1.C -Os execution test
FAIL: g++.dg/asan/interception-malloc-test-1.C -O2 -flto -fno-use-linker-plugin -flto-partition=none execution test
FAIL: g++.dg/asan/interception-malloc-test-1.C -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects execution test
FAIL: gcc.dg/analyzer/data-model-4.c (test for excess errors)
FAIL: gcc.dg/analyzer/torture/conftest-1.c -O0 (test for excess errors)
FAIL: gcc.dg/analyzer/torture/conftest-1.c -O1 (test for excess errors)
FAIL: gcc.dg/analyzer/torture/conftest-1.c -O2 (test for excess errors)
FAIL: gcc.dg/analyzer/torture/conftest-1.c -O3 -g (test for excess errors)
FAIL: gcc.dg/analyzer/torture/conftest-1.c -Os (test for excess errors)
FAIL: gcc.dg/analyzer/torture/conftest-1.c -O2 -flto -fno-use-linker-plugin -flto-partition=none (test for excess errors)
FAIL: gcc.dg/pr56837.c scan-tree-dump-times optimized "memset ..c, 68, 16384.;" 1
FAIL: gcc.dg/vect/vect-ifcvt-18.c scan-tree-dump vect "vectorized 3 loops"
FAIL: gcc.dg/vect/vect-ifcvt-18.c -flto -ffat-lto-objects scan-tree-dump vect "vectorized 3 loops"
FAIL: gcc.dg/vect/vect-simd-clone-16f.c scan-tree-dump-times vect "[\\\\n\\\\r] [^\\\\n]* = foo\\\\.simdclone" 2
FAIL: gcc.dg/vect/vect-simd-clone-17f.c scan-tree-dump-times vect "[\\\\n\\\\r] [^\\\\n]* = foo\\\\.simdclone" 2
FAIL: gcc.dg/vect/vect-simd-clone-18f.c scan-tree-dump-times vect "[\\\\n\\\\r] [^\\\\n]* = foo\\\\.simdclone" 2
FAIL: 23_containers/vector/bool/allocator/copy.cc (test for excess errors)
time {
make install
chown -v -R root:root \
/usr/lib/gcc/$(gcc -dumpmachine)/13.2.0/include{,-fixed}
ln -svr /usr/bin/cpp /usr/lib
ln -sv gcc.1 /usr/share/man/man1/cc.1
ln -sfv ../../libexec/gcc/$(gcc -dumpmachine)/13.2.0/liblto_plugin.so \
/usr/lib/bfd-plugins/
echo 'int main(){}' > dummy.c
cc dummy.c -v -Wl,--verbose &> dummy.log
readelf -l a.out | grep ': /lib'
grep -E -o '/usr/lib.*/S?crt[1in].*succeeded' dummy.log
grep -B4 '^ /usr/include' dummy.log
grep 'SEARCH.*/usr/lib' dummy.log |sed 's|; |\n|g'
grep "/lib.*/libc.so.6 " dummy.log
grep found dummy.log
rm -v dummy.c a.out dummy.log
mkdir -pv /usr/share/gdb/auto-load/usr/lib
mv -v /usr/lib/*gdb.py /usr/share/gdb/auto-load/usr/lib
}
cd /sources/
rm -rf gcc-*/
Expected output:
[Requesting program interpreter: /lib64/ld-linux-x86-64.so.2]
/usr/lib/gcc/x86_64-pc-linux-gnu/13.2.0/../../../../lib/Scrt1.o succeeded
/usr/lib/gcc/x86_64-pc-linux-gnu/13.2.0/../../../../lib/crti.o succeeded
/usr/lib/gcc/x86_64-pc-linux-gnu/13.2.0/../../../../lib/crtn.o succeeded
#include <...> search starts here:
/usr/lib/gcc/x86_64-pc-linux-gnu/13.2.0/include
/usr/local/include
/usr/lib/gcc/x86_64-pc-linux-gnu/13.2.0/include-fixed
/usr/include
SEARCH_DIR("/usr/x86_64-pc-linux-gnu/lib64")
SEARCH_DIR("/usr/local/lib64")
SEARCH_DIR("/lib64")
SEARCH_DIR("/usr/lib64")
SEARCH_DIR("/usr/x86_64-pc-linux-gnu/lib")
SEARCH_DIR("/usr/local/lib")
SEARCH_DIR("/lib")
SEARCH_DIR("/usr/lib");
attempt to open /usr/lib/libc.so.6 succeeded
found ld-linux-x86-64.so.2 at /usr/lib/ld-linux-x86-64.so.2
Next section: 8.28-8.46