Revert "doc: add script to compute texi files dependencies"

This reverts commit 628ceac6526724d35cb390cc1f88344f4ea22eb4.

The commit broke out of tree builds

3 files changed, 3 insertions, 25 deletions

diff --git a/configure b/configure
index 97f6913f2f..dd6e9510b0 100755
--- a/configure
+++ b/configure
@@ -2214,8 +2214,8 @@ ffserver_extralibs='$ldl'
 # documentation
 podpages_deps="perl"
 manpages_deps="perl pod2man"
-htmlpages_deps="perl texi2html"
-txtpages_deps="perl makeinfo"
+htmlpages_deps="texi2html"
+txtpages_deps="makeinfo"
 doc_deps_any="manpages htmlpages podpages txtpages"
 
 # default parameters
diff --git a/doc/Makefile b/doc/Makefile
index ab18146f41..cd24b8c597 100644
--- a/doc/Makefile
+++ b/doc/Makefile
@@ -43,7 +43,7 @@ doc: documentation
 apidoc: doc/doxy/html
 documentation: $(DOCS)
 
-TEXIDEP = perl $(SRC_PATH)/doc/texidep.pl $< $@ >$(@:%=%.d)
+TEXIDEP = awk '/^@(verbatim)?include/ { printf "$@: $(@D)/%s\n", $$2 }' <$< >$(@:%=%.d)
 
 doc/%.txt: TAG = TXT
 doc/%.txt: doc/%.texi
diff --git a/doc/texidep.pl b/doc/texidep.pl
deleted file mode 100644
index 0275e74709..0000000000
--- a/doc/texidep.pl
+++ /dev/null
@@ -1,22 +0,0 @@
-#! /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, {});