docs: kernel-doc.rst: add documentation about man pages

kernel-doc-nano-HOWTO.txt has a chapter about man pages
production. While we don't have a working  "make manpages"
target, add it.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
This commit is contained in:
Mauro Carvalho Chehab 2017-12-18 10:30:07 -02:00 committed by Jonathan Corbet
parent bdb76f9e30
commit 93626d7a76
1 changed files with 34 additions and 0 deletions

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@ -452,3 +452,37 @@ file.
Data structures visible in kernel include files should also be documented using
kernel-doc formatted comments.
How to use kernel-doc to generate man pages
-------------------------------------------
If you just want to use kernel-doc to generate man pages you can do this
from the Kernel git tree::
$ scripts/kernel-doc -man $(git grep -l '/\*\*' |grep -v Documentation/) | ./split-man.pl /tmp/man
Using the small ``split-man.pl`` script below::
#!/usr/bin/perl
if ($#ARGV < 0) {
die "where do I put the results?\n";
}
mkdir $ARGV[0],0777;
$state = 0;
while (<STDIN>) {
if (/^\.TH \"[^\"]*\" 9 \"([^\"]*)\"/) {
if ($state == 1) { close OUT }
$state = 1;
$fn = "$ARGV[0]/$1.9";
print STDERR "Creating $fn\n";
open OUT, ">$fn" or die "can't open $fn: $!\n";
print OUT $_;
} elsif ($state != 0) {
print OUT $_;
}
}
close OUT;