po4a @0.45 (textproc) Undefined subroutine - build failure

[composr@…]

Starting from a completely clean port install:

• Yosemite 10.10.3
• xcode-select 2339

1. Running sudo port -v install po4a starts install
2. All dependencies correctly download and build
3. po4a correctly downloads
4. Build fails with output:

Undefined subroutine &PerlIO::F_UTF8 called at /opt/local/lib/perl5/vendor_perl/5.16.3/Pod/Man.pm line 775.
	...propagated at Po4aBuilder.pm line 267.

I've also tried directly downloading the source tarball and building manually with the same error.

Attaching full log below.

[composr@…]

Port build log output

[ryandesign (Ryan Carsten Schmidt)]

Replying to composr@…:

I've also tried directly downloading the source tarball and building manually with the same error.

Since you've already verified that this is not a MacPorts-specific issue, you should report it to the developers of po4a so that they can resolve it.

[composr@…]

Replying to ryandesign@…:

Replying to composr@…:

I've also tried directly downloading the source tarball and building manually with the same error.

Since you've already verified that this is not a MacPorts-specific issue, you should report it to the developers of po4a so that they can resolve it.

I more or less verified that building from source using the ports-installed Perl libraries doesn't work. I should like to verify independent of anything from Ports before I'd report it upstream. Thanks for the tip!

[mojca (Mojca Miklavec)]

The build works for me if I don't run the build in trace mode, suggesting that most probably just one dependency is missing.

[mojca (Mojca Miklavec)]

The function is defined in /opt/local/lib/perl5/5.22/PerlIO.pm which belongs to perl5.22. So it's weird that it doesn't work.

[mojca (Mojca Miklavec)]

Based on the error:

I/O error : Attempt to load network entity http://docbook.sourceforge.net/release/xsl/current/manpages/docbook.xsl
warning: failed to load external entity "http://docbook.sourceforge.net/release/xsl/current/manpages/docbook.xsl"
cannot parse http://docbook.sourceforge.net/release/xsl/current/manpages/docbook.xsl
Undefined subroutine &PerlIO::F_UTF8 called at /opt/local/lib/perl5/vendor_perl/5.22/Pod/Man.pm line 777.
	...propagated at Po4aBuilder.pm line 268.

I would suspect that it might have something to do with:

> port provides /opt/local/lib/perl5/5.22/Pod/Man.pm
/opt/local/lib/perl5/5.22/Pod/Man.pm is provided by: perl5.22
> port provides /opt/local/lib/perl5/vendor_perl/5.22/Pod/Man.pm
/opt/local/lib/perl5/vendor_perl/5.22/Pod/Man.pm is provided by: p5.22-podlators

where p5.22-podlators ships a newer version that perl5.22.

But I have no clue. Adding p5.22-podlators to the list of dependencies and enabling trace mode doesn't solve the problem.

[mojca (Mojca Miklavec)]

Following the hint about the line with the failure:

system("xsltproc -o $outdir/$outfile.$section --nonet http://docbook.sourceforge.net/release/xsl/current/manpages/docbook.xsl $file") and die;

I first added dependency on libxslt which provides the xsltproc binary. Then I followed all the warnings about all files and modules that have been hidden by the trace mode and came up with the following list:

depends_build-append \
                    port:docbook-xml-4.1.2 \
                    port:docbook-xml-4.2 \
                    port:docbook-xml-4.3 \
                    port:docbook-xml-4.4 \
                    port:docbook-xml-4.5 \
                    port:docbook-xml-5.0 \
                    port:docbook-xsl \
                    port:docbook-xsl-ns \
                    port:libxslt \
                    port:p${perl5.major}-data-dumper \
                    port:p${perl5.major}-extutils-manifest \
                    port:p${perl5.major}-file-path \
                    port:p${perl5.major}-getopt-long \
                    port:p${perl5.major}-html-parser \
                    port:p${perl5.major}-parent \
                    port:p${perl5.major}-pathtools \
                    port:p${perl5.major}-text-parsewords

I'm almost sure that some of these might not be needed or might be part of the core already, but the compilation works fine after that.

Remaining warnings:

Warning: The following existing files were hidden from the build system by trace mode:
  /OPT/LOCAL/LIB/PERL5/VENDOR_PERL/5.22/POD/SIMPLE/SEARCH.PM
  /opt/local/bin/gzip
  /opt/local/bin/perl

[mojca (Mojca Miklavec)]

After r143429 the built on the buildbots finished successfully. I leave it up to others to figure out which dependencies are superfluous (and also left a comment in the port).