[ptxdist] Building glib2.0 fails

[Ladislav Michl <ladis@linux-mips.org>]

Hi there,

after upgrade to Debian unstable (which works much reliably that Stretch
here :)) glib2.0 stopped building with:
https://bugzilla.gnome.org/show_bug.cgi?id=787768
and there is patch for that:
https://bug787768.bugzilla-attachments.gnome.org/attachment.cgi?id=362281

Relevant parts of build log are:
checking for gtk-doc... no
configure: WARNING:
  You will not be able to create source packages with 'make dist'
  because gtk-doc >= 1.20 is not found.
checking for gtkdoc-check... gtkdoc-check.test
checking for gtkdoc-check... /usr/bin/gtkdoc-check
checking for gtkdoc-rebase... /usr/bin/gtkdoc-rebase
checking for gtkdoc-mkpdf... /usr/bin/gtkdoc-mkpdf
checking whether to build gtk-doc documentation... no

which later leads to:
Making install in docs
make[3]: Entering directory '/home/ladis/src/peoplemetr/SimEarTools/dist/build/platform-igep2/build-target/glib-2.54.2/docs'
Making install in reference
make[4]: Entering directory '/home/ladis/src/peoplemetr/SimEarTools/dist/build/platform-igep2/build-target/glib-2.54.2/docs/reference'
Making install in glib
make[5]: Entering directory '/home/ladis/src/peoplemetr/SimEarTools/dist/build/platform-igep2/build-target/glib-2.54.2/docs/reference/glib'
make[6]: Entering directory '/home/ladis/src/peoplemetr/SimEarTools/dist/build/platform-igep2/build-target/glib-2.54.2/docs/reference/glib'
make[6]: Nothing to be done for 'install-exec-am'.
 /home/ladis/src/ptxdist/bin/install -c -m 644 ./html/Sorted_binary_tree_breadth-first_traversal.svg
[snip]
 /home/ladis/src/ptxdist/bin/install -c -m 644 ./html/up.png
Package glib-2.0 was not found in the pkg-config search path.
Perhaps you should add the directory containing `glib-2.0.pc'
to the PKG_CONFIG_PATH environment variable
No package 'glib-2.0' found
Traceback (most recent call last):
  File "/usr/bin/gtkdoc-rebase", line 56, in <module>
    sys.exit(rebase.run(options))
  File "/usr/share/gtk-doc/python/gtkdoc/rebase.py", line 66, in run
    dir = common.GetModuleDocDir('glib-2.0')
  File "/usr/share/gtk-doc/python/gtkdoc/common.py", line 104, in GetModuleDocDir
    path = subprocess.check_output([config.pkg_config, '--variable=prefix', module_name], universal_newlines=True)
  File "/usr/lib/python2.7/subprocess.py", line 219, in check_output
    raise CalledProcessError(retcode, cmd, output=output)
subprocess.CalledProcessError: Command '['/usr/bin/pkg-config', '--variable=prefix', 'glib-2.0']' returned non-zero exit status 1
Makefile:1009: recipe for target 'install-data-local' failed

As you can see, glib.rule is using host's tools in /usr/bin/gtkdoc-rebase,
thus failure is distribution dependent, which should not be the case.

This is just a bug report with possibility of providing fix later...

	ladis

PS. Perhaps running PTXdist in very limited chroot would catch most of
such bugs earlier :)

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