On Tue, 4 Oct 2016, Santiago Vila wrote:
> But in either case, look at the error message. It's essentially like
> this:
>
> /usr/bin/install -c -m 644
> some-files _generated/errors.py some-files _generated/errors.py some-files
> directory
>
> This fails because _generated/errors.py is listed twice.
And in fact the patch below shows that $(BUILT_SOURCES), which is what
the install target tries to install, contains _generated/errors.py twice.
To test it, apply the patch, build the package with "dpkg-buildpackage -A"
and then try:
make -C src show_BUILT_SOURCES | grep --color _generated/errors.py
You should see _generated/errors.py twice, one because it's listed
explicitly and another one as the result of the patsubst in spec_files.
The question, then, is not why it fails, but why it does not always fail.
Please try to explain how the current Makefile tries to avoid the
failure. I guess it relies on wildcard $(spec_dir)/*.xml having
a particular order, but the order of such wildcard expansion
depends on filesystem ordering, so it may be anything.
So I really think there is a Makefile bug here, even if can't
explain it in full. please forward the bug upstream.
Thanks.
--- a/src/Makefile.in
+++ b/src/Makefile.in
@@ -223,6 +223,9 @@ BUILT_SOURCES = \
_generated/__init__.py \
$(spec_files)
+show_BUILT_SOURCES:
+ @echo $(BUILT_SOURCES)
+
generateddir = $(telepathydir)/_generated
nodist_generated_PYTHON = $(BUILT_SOURCES)
