Commit 628ceac6 authored by Stefano Sabatini's avatar Stefano Sabatini

doc: add script to compute texi files dependencies

Replace the inline awk script with a Perl script which tracks the
dependencies recursively.

This allows to correctly track dependencies for files including files
with a second level include (for example: ffmpeg-devices.texi ->
devices.texi -> outdevs.texi).

This also adds a dependency on perl for computing the dependencies, which
should not be a problem since perl is already required all the way for
building documentation.
parent 37a970bb
...@@ -2214,8 +2214,8 @@ ffserver_extralibs='$ldl' ...@@ -2214,8 +2214,8 @@ ffserver_extralibs='$ldl'
# documentation # documentation
podpages_deps="perl" podpages_deps="perl"
manpages_deps="perl pod2man" manpages_deps="perl pod2man"
htmlpages_deps="texi2html" htmlpages_deps="perl texi2html"
txtpages_deps="makeinfo" txtpages_deps="perl makeinfo"
doc_deps_any="manpages htmlpages podpages txtpages" doc_deps_any="manpages htmlpages podpages txtpages"
# default parameters # default parameters
......
...@@ -43,7 +43,7 @@ doc: documentation ...@@ -43,7 +43,7 @@ doc: documentation
apidoc: doc/doxy/html apidoc: doc/doxy/html
documentation: $(DOCS) documentation: $(DOCS)
TEXIDEP = awk '/^@(verbatim)?include/ { printf "$@: $(@D)/%s\n", $$2 }' <$< >$(@:%=%.d) TEXIDEP = perl $(SRC_PATH)/doc/texidep.pl $< $@ >$(@:%=%.d)
doc/%.txt: TAG = TXT doc/%.txt: TAG = TXT
doc/%.txt: doc/%.texi doc/%.txt: doc/%.texi
......
#! /usr/bin/perl
use warnings;
use strict;
my ($root, $target) = @ARGV;
sub print_deps {
my ($file, $deps) = @_;
$deps->{$file} = 1;
open(my $fh, "$file") or die "Cannot open file '$file': $!";
while (<$fh>) {
/^@(?:verbatim)?include\s+(\S+)/ and do {
die "Circular dependency found in file $root\n" if exists $deps->{"doc/$1"};
print "$target: doc/$1\n";
print_deps("doc/$1", {%$deps});
}
}
}
print_deps($root, {});
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