Commit 5b073da7 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.

This is a variant of commit 628ceac6
which was reverted due to out-of-tree build failure.
parent 5cda499d
...@@ -2337,8 +2337,8 @@ ffserver_extralibs='$ldl' ...@@ -2337,8 +2337,8 @@ ffserver_extralibs='$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
......
...@@ -61,7 +61,7 @@ documentation: $(DOCS) ...@@ -61,7 +61,7 @@ documentation: $(DOCS)
examples: $(DOC_EXAMPLES) examples: $(DOC_EXAMPLES)
TEXIDEP = awk '/^@(verbatim)?include/ { printf "$@: $(@D)/%s\n", $$2 }' <$< >$(@:%=%.d) TEXIDEP = perl $(SRC_PATH)/doc/texidep.pl $(SRC_PATH) $< $@ >$(@:%=%.d)
doc/%.txt: TAG = TXT doc/%.txt: TAG = TXT
doc/%.txt: doc/%.texi doc/%.txt: doc/%.texi
......
#! /usr/bin/env perl
# This script will print the dependency of a Texinfo file to stdout.
# texidep.pl <src-path> <input.texi> <output.ext>
use warnings;
use strict;
die unless @ARGV == 3;
my ($src_path, $root, $target) = @ARGV;
sub print_deps {
my ($file, $deps) = @_;
$deps->{$file} = 1;
open(my $fh, "<", "$file") or die "Cannot open file '$file': $!";
while (<$fh>) {
if (my ($i) = /^\@(?:verbatim)?include\s+(\S+)/) {
die "Circular dependency found in file $root\n" if exists $deps->{"doc/$1"};
print "$target: doc/$1\n";
# skip looking for config.texi dependencies, since it has
# none, and is not located in the source tree
if ("$1" ne "config.texi") {
print_deps("$src_path/doc/$1", {%$deps});
}
}
}
}
print_deps($root, {});
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment