SanzSkuy at 06:48, 18 April 2025

2025-04-18T06:48:25Z

← Older revision		Revision as of 06:48, 18 April 2025
Line 73:		Line 73:

	unset BIN LIB save_usrlib online_usrbin online_usrlib		unset BIN LIB save_usrlib online_usrbin online_usrlib
			</syntaxhighlight>

			== Cleaning ==
			<syntaxhighlight lang=bash>
			rm -rf /tmp/{,.}
			find /usr/lib /usr/libexec -name \*.la -delete
			find /usr -depth -name $(uname -m)-lfs-linux-gnu\* \| xargs rm -rf
			userdel -r tester
	</syntaxhighlight>		</syntaxhighlight>

SanzSkuy at 06:46, 18 April 2025

2025-04-18T06:46:48Z

← Older revision		Revision as of 06:46, 18 April 2025
Line 3:		Line 3:
	== Troubleshooting ==		== Troubleshooting ==
	* Kalo ada error, coba mount ulang seperti di [[LFS: Virtual Kernel File Systems]]		* Kalo ada error, coba mount ulang seperti di [[LFS: Virtual Kernel File Systems]]

			== Debug Symbol & Stripping ==
			Secara default, hampir semua program dan library di Linux From Scratch (LFS) akan dikompilasi dengan debugging symbols (-g). Ini berguna untuk proses debugging karena debugger seperti gdb bisa menampilkan nama fungsi dan variabel, bukan sekadar alamat memori.

			Namun, debugging symbols ini membuat ukuran file biner menjadi jauh lebih besar. Berikut contoh perbandingan ukuran:
			{\| class="wikitable" style="margin:auto"
			! Binary !! Dengan Debug Symbols !! Tanpa Debug Symbols !! Penghematan
			\|-
			\| Bash \|\| 1200 KB \|\| 480 KB \|\| ~60%
			\|-
			\| Glibc dan GCC (/lib dan /usr/lib) \|\| 87 MB \|\| 16 MB \|\| ~82%
			\|}
			Karena sebagian besar pengguna tidak membutuhkan fitur debugging di sistem operasi hasil build, kita bisa strip simbol-simbol ini untuk menghemat ruang disk.
			<syntaxhighlight lang=bash>
			save_usrlib="$(cd /usr/lib; ls ld-linux*[^g])
			libc.so.6
			libthread_db.so.1
			libquadmath.so.0.0.0
			libstdc++.so.6.0.33
			libitm.so.1.0.0
			libatomic.so.1.2.0"

			cd /usr/lib

			for LIB in $save_usrlib; do
			objcopy --only-keep-debug --compress-debug-sections=zlib $LIB $LIB.dbg
			cp $LIB /tmp/$LIB
			strip --strip-debug /tmp/$LIB
			objcopy --add-gnu-debuglink=$LIB.dbg /tmp/$LIB
			install -vm755 /tmp/$LIB /usr/lib
			rm /tmp/$LIB
			done

			online_usrbin="bash find strip"
			online_usrlib="libbfd-2.44.so
			libsframe.so.1.0.0
			libhistory.so.8.2
			libncursesw.so.6.5
			libm.so.6
			libreadline.so.8.2
			libz.so.1.3.1
			libzstd.so.1.5.7
			$(cd /usr/lib; find libnss.so -type f)"

			for BIN in $online_usrbin; do
			cp /usr/bin/$BIN /tmp/$BIN
			strip --strip-debug /tmp/$BIN
			install -vm755 /tmp/$BIN /usr/bin
			rm /tmp/$BIN
			done

			for LIB in $online_usrlib; do
			cp /usr/lib/$LIB /tmp/$LIB
			strip --strip-debug /tmp/$LIB
			install -vm755 /tmp/$LIB /usr/lib
			rm /tmp/$LIB
			done

			for i in $(find /usr/lib -type f -name \.so ! -name \*dbg) \
			$(find /usr/lib -type f -name \*.a) \
			$(find /usr/{bin,sbin,libexec} -type f); do
			case "$online_usrbin $online_usrlib $save_usrlib" in
			$(basename $i) )
			;;
			* ) strip --strip-debug $i
			;;
			esac
			done

			unset BIN LIB save_usrlib online_usrbin online_usrlib
			</syntaxhighlight>

SanzSkuy at 05:57, 17 April 2025

2025-04-17T05:57:08Z

← Older revision		Revision as of 05:57, 17 April 2025
Line 1:		Line 1:
	https://www.linuxfromscratch.org/lfs/view/development/chapter08/introduction.html		https://www.linuxfromscratch.org/lfs/view/development/chapter08/introduction.html

			== Troubleshooting ==
			* Kalo ada error, coba mount ulang seperti di [[LFS: Virtual Kernel File Systems]]

SanzSkuy: Created page with "https://www.linuxfromscratch.org/lfs/view/development/chapter08/introduction.html"

2025-04-17T05:34:24Z

Created page with "https://www.linuxfromscratch.org/lfs/view/development/chapter08/introduction.html"

New page

https://www.linuxfromscratch.org/lfs/view/development/chapter08/introduction.html

LFS: Building LFS - Revision history

SanzSkuy at 06:48, 18 April 2025

SanzSkuy at 06:46, 18 April 2025

SanzSkuy at 05:57, 17 April 2025

SanzSkuy: Created page with "https://www.linuxfromscratch.org/lfs/view/development/chapter08/introduction.html"