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iv. LFS and Standards
The structure of LFS follows Linux standards as closely as possible. The primary standards are:
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The Single UNIX Specification Version 3 (POSIX). Note: Free registration is required.
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Linux Standard Base (LSB) Core Specification 4.0
The LSB has five separate standards: Core, C++, Desktop, Runtime Languages, and Printing. In addition to generic requirements there are also architecture specific requirements. LFS attempts to conform to the architectures discussed in the previous section.
![[Note]](../images/note.png)
Note
Many people do not agree with the requirements of the LSB. The main purpose of defining it is to ensure that proprietary software will be able to be installed and run properly on a compliant system. Since LFS is source based, the user has complete control over what packages are desired and many choose not to install some packages that are specified by the LSB.
Creating a complete LFS system capable of passing the LSB certifications tests is possible, but not without many additional packages that are beyond the scope of LFS. Most of these additional packages have installation instructions in BLFS.
Packages supplied by LFS needed to satisfy the LSB Requirements
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LSB Core: |
Bash, Binutils, Coreutils, Diffutils, File, Findutils, Gawk, Grep, Gzip, M4, Man-DB, Ncurses, Procps, Psmisc, Sed, Shadow, Tar, Util-linux-ng, Zlib |
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LSB C++: |
Gcc |
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LSB Desktop: |
None |
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LSB Runtime Languages: |
Perl |
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LSB Printing: |
None |
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LSB Multimeda: |
None |
Packages supplied by BLFS needed to satisfy the LSB Requirements
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LSB Core: |
Bc, Cpio, Ed, Fcrontab, PAM, Sendmail (or Postfix or Exim) |
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LSB C++: |
None |
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LSB Desktop: |
ATK, Cairo, Desktop-file-utils, Freetype, Fontconfig, Glib2, GTK+2, Icon-naming-utils, Libjpeg, Libpng, Libxml2, MesaLib, Pango, Qt3, Qt4, Xorg |
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LSB Runtime Languages: |
Python |
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LSB Printing: |
CUPS |
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LSB Multimeda: |
Alsa Libraries, NSPR, NSS, OpenSSL, Java |
Packages not supplied by LFS or BLFS needed to satisfy the LSB Requirements
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LSB Core: |
At, Batch, Install_initd, Lsb_release, Remove_initd, Test |
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LSB C++: |
None |
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LSB Desktop: |
None |
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LSB Runtime Languages: |
None |
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LSB Printing: |
None |
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LSB Multimeda: |
Xdg-utils |