[Build-common-hackers] Bug#433862: cdbs: please allow the possibility to filter out packages

[Andreas Metzler]

notfixed 433862 0.4.50
thanks

This bug-report was closed in 0.4.50 with this message:

----------------
* Use dh_listpackages instead of custom list-packages script when debhelper
  is used.  Since this requires a recent version of debhelper, debhelper is
  now a dependency of cdbs.  (buildcore.mk, permodule-vars.mk)
  (closes: #405413, #433862)
----------------

The way dh_listpackages is used, there seems to be no way to
accomplish what his bug report is about: to stop cdbs from building
specific packages although they are listed in debian/control.

I have been hit by this myself recently:

gnutls26 includes a wrapper for Guile. However, guile is not available
on ia64. Which is why I want dpkg-buildpackage to not try to build the
binary on this arch.

I have tried this in vain:

DEB_DH_BUILDDEB_ARGS := -Nguile-gnutls

This fails, since cdbs then calls
"dh_builddeb -pguile-gnutls -Nguile-gnutls" which in turn exits with
non-zero exitcode.

If there was a DEB_DH_LISTPACKAGES I would simply set it to
-Nguile-gnutls and be happy.

Currently I am using this:

-----------------------------
include /usr/share/cdbs/1/rules/buildvars.mk

# No guile on ia64; do not build gnutls wrapper there.
ifeq ($(DEB_BUILD_ARCH),ia64)
        DEB_ARCH_PACKAGES := $(subst guile-gnutls,,$(DEB_ARCH_PACKAGES))
endif

include /usr/share/cdbs/1/rules/debhelper.mk
include /usr/share/cdbs/1/class/autotools.mk
include /usr/share/cdbs/1/rules/simple-patchsys.mk

DEB_CONFIGURE_EXTRA_FLAGS = --with-mcrypt=no --enable-ld-version-script --disable-cxx --without-lzo
[...]
# No guile on ia64; do not build gnutls wrapper there.
ifeq ($(DEB_BUILD_ARCH),ia64)
        DEB_CONFIGURE_EXTRA_FLAGS += --disable-guile
else
        DEB_CONFIGURE_EXTRA_FLAGS += --enable-guile --with-guile-site-dir=/usr/share/guile/site
endif
-----------------------------

Note how I need to include buildvars.mk first, then manipulate the
variable and after that include the rules/classes I really want to
use.

This looks like a hack, however if you think this is correct and
*supported* usage of cdbs feel free to close this bug.

thanks, cu andreas
-- 
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