GNU bug report logs - #13002
directory variables in VALAFLAGS are expanded after cd

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From: Daiki Ueno <ueno <at> unixuser.org>
To: 13002 <at> debbugs.gnu.org
Subject: bug#13002: directory variables in VALAFLAGS are expanded after cd
Date: Mon, 26 Nov 2012 20:03:38 +0900

Hi,

I see quite a few Vala projects setting VALAFLAGS as follows:

libfolks_eds_la_VALAFLAGS = \
        --vapidir=. \
        --vapidir=$(top_srcdir)/folks \
        ...

This is referred by the generated rule in Makefile.in as:

$(AM_V_VALAC)$(am__cd) $(srcdir) && $(VALAC) $(libfolks_eds_la_VALAFLAGS) $(VALAFLAGS) -C $(libfolks_eds_la_SOURCES)

Here, if $(srcdir) != $(builddir) and $(top_srcdir) is a relative path
from $(builddir), the --vapidir option will point to a wrong location.

Though this could be worked around by using $(abs_top_srcdir) instead of
$(top_srcdir), it looks to me a bit unintuitive.  It would be nice that
automake handles this case nicely.

Regards,
-- 
Daiki Ueno

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