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-rwxr-xr-xconfigure4
-rw-r--r--doc/Makefile2
-rw-r--r--doc/texidep.pl32
3 files changed, 35 insertions, 3 deletions
diff --git a/configure b/configure
index 9c8fc972fa..205cfc96b3 100755
--- a/configure
+++ b/configure
@@ -2337,8 +2337,8 @@ ffserver_extralibs='$ldl'
# documentation
podpages_deps="perl"
manpages_deps="perl pod2man"
-htmlpages_deps="texi2html"
-txtpages_deps="makeinfo"
+htmlpages_deps="perl texi2html"
+txtpages_deps="perl makeinfo"
doc_deps_any="manpages htmlpages podpages txtpages"
# default parameters
diff --git a/doc/Makefile b/doc/Makefile
index 1a7c460e29..26bd9f59cb 100644
--- a/doc/Makefile
+++ b/doc/Makefile
@@ -61,7 +61,7 @@ documentation: $(DOCS)
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: doc/%.texi
diff --git a/doc/texidep.pl b/doc/texidep.pl
new file mode 100644
index 0000000000..099690378e
--- /dev/null
+++ b/doc/texidep.pl
@@ -0,0 +1,32 @@
+#! /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, {});