[2024-feb-29] Sad news: Eric Layton aka Nocturnal Slacker aka vtel57 passed away on Feb 26th, shortly after hospitalization. He was one of our Wiki's most prominent admins. He will be missed.

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howtos:misc:anatomy_of_a_slackbuild [2020/01/04 15:43 (UTC)] – [Anatomy Of a Slackbuild] captain_sensiblehowtos:misc:anatomy_of_a_slackbuild [2020/01/05 16:26 (UTC)] – [Anatomy Of a Slackbuild] captain_sensible
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 </code> </code>
  
 +The first two lines of this block are a bit of a mouth-full:
 +<code>
 +find $PKG -print0 | xargs -0 file | grep -e "executable" -e "shared object" | grep ELF \
 +  | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null || true
 +</code>
 +
 +We can however pick out key words that help to make sense of it. "find" is a powerful command that has around 50 options. It basically does what it says on the can but with the -print0 option separates what it finds with "\000"  - in a word NULL. The "|" or pipe is used to pass the results of a command to another, in this case xargs with a flag -0. Which is for xargs to accept input that has /000 between them. ELF is is Executable & Linkable Format.
 +
 +To give a succinct answer the two lines are removing debugging symbols and other unnecessary stuff to make the binaries smaller, faster and take up less memory.
 +
 +<code>
 +mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
 +</code>
 +
 +Here we are preparing a directory which will be called "latex2html-2019.2" into  /usr/doc. This is so we an put relevant documentation into a directory relevantly called so that a user can access documentation on the package.
 +The next lines put files such as  README.md into the /usr/doc/latex2html-2019.2 directory.
 +
 +<code>
 +cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild
 +</code>
 +
 +That line goes back to the original directory that Latex2html.SlackBuild was run from ( i previosly quoted Desktop) opens up the SlackBuild with cat command and copies it to the documentation directory. 
 +Now before I submitted latex2html to slackbuilds obviously I did some trsting and found that when the package is installed a fairly comprensive output could be seen just using 
 +<code>
 +$ latex2html --help
 +</code> 
 +
 +Also I had access to a comprehensive manual in pdf format; so in my case I did not write code for man pages. Instead I simply put a copy of "manual.pdf" into the /usr/doc/latex2html-2019.2 directory.
  
  
  --- //[[wiki:user:captain_sensible|andy brookes]] 2019/12/28 19:28 (UTC)//  --- //[[wiki:user:captain_sensible|andy brookes]] 2019/12/28 19:28 (UTC)//
-// 
  
 //If you teach maths it doesn't stop you  embedding a little English.   //If you teach maths it doesn't stop you  embedding a little English.  

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