Bug#806864: mlpack: FTBFS when built with dpkg-buildpackage -A (can't cd to debian/mlpack-bin/usr/bin)

[Santiago Vila]

Package: src:mlpack
Version: 1.0.12-5
User: sanvila at debian.org
Usertags: binary-indep
Severity: important

Dear maintainer:

I tried to build this package with "dpkg-buildpackage -A"
(i.e. only architecture-independent packages), and it failed:

--------------------------------------------------------------------------------
[...]
 debian/rules build-indep
dh build-indep --parallel
   dh_testdir -i -O--parallel
   dh_auto_configure -i -O--parallel
	cmake .. -DCMAKE_INSTALL_PREFIX=/usr -DCMAKE_VERBOSE_MAKEFILE=ON -DCMAKE_BUILD_TYPE=None -DCMAKE_INSTALL_SYSCONFDIR=/etc -DCMAKE_INSTALL_LOCALSTATEDIR=/var
-- The C compiler identification is GNU 5.2.1
-- The CXX compiler identification is GNU 5.2.1
-- Check for working C compiler: /usr/bin/cc
-- Check for working C compiler: /usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features

[... snipped ...]

-- Installing: /<<PKGBUILDDIR>>/debian/tmp/usr/bin/nca
-- Removed runtime path from "/<<PKGBUILDDIR>>/debian/tmp/usr/bin/nca"
-- Installing: /<<PKGBUILDDIR>>/debian/tmp/usr/bin/allknn
-- Removed runtime path from "/<<PKGBUILDDIR>>/debian/tmp/usr/bin/allknn"
-- Installing: /<<PKGBUILDDIR>>/debian/tmp/usr/bin/allkfn
-- Removed runtime path from "/<<PKGBUILDDIR>>/debian/tmp/usr/bin/allkfn"
-- Installing: /<<PKGBUILDDIR>>/debian/tmp/usr/bin/nmf
-- Removed runtime path from "/<<PKGBUILDDIR>>/debian/tmp/usr/bin/nmf"
-- Installing: /<<PKGBUILDDIR>>/debian/tmp/usr/bin/pca
-- Removed runtime path from "/<<PKGBUILDDIR>>/debian/tmp/usr/bin/pca"
-- Installing: /<<PKGBUILDDIR>>/debian/tmp/usr/bin/perceptron
-- Removed runtime path from "/<<PKGBUILDDIR>>/debian/tmp/usr/bin/perceptron"
-- Installing: /<<PKGBUILDDIR>>/debian/tmp/usr/bin/radical
-- Removed runtime path from "/<<PKGBUILDDIR>>/debian/tmp/usr/bin/radical"
-- Installing: /<<PKGBUILDDIR>>/debian/tmp/usr/bin/range_search
-- Removed runtime path from "/<<PKGBUILDDIR>>/debian/tmp/usr/bin/range_search"
-- Installing: /<<PKGBUILDDIR>>/debian/tmp/usr/bin/allkrann
-- Removed runtime path from "/<<PKGBUILDDIR>>/debian/tmp/usr/bin/allkrann"
-- Installing: /<<PKGBUILDDIR>>/debian/tmp/usr/bin/sparse_coding
-- Removed runtime path from "/<<PKGBUILDDIR>>/debian/tmp/usr/bin/sparse_coding"
make[1]: Leaving directory '/<<PKGBUILDDIR>>/obj-x86_64-linux-gnu'
   debian/rules override_dh_install
make[1]: Entering directory '/<<PKGBUILDDIR>>'
dh_install
for d in				\
  debian/mlpack-bin/usr/bin		\
  debian/mlpack-bin/usr/share/man/man1;	\
do					\
  (cd $d &&				\
  for f in *; do			\
    mv --verbose ${f} mlpack_${f};	\
  done);				\
done
/bin/sh: 5: cd: can't cd to debian/mlpack-bin/usr/bin
/bin/sh: 5: cd: can't cd to debian/mlpack-bin/usr/share/man/man1
debian/rules:23: recipe for target 'override_dh_install' failed
make[1]: *** [override_dh_install] Error 2
make[1]: Leaving directory '/<<PKGBUILDDIR>>'
debian/rules:10: recipe for target 'binary-indep' failed
make: *** [binary-indep] Error 2
dpkg-buildpackage: error: fakeroot debian/rules binary-indep gave error exit status 2
--------------------------------------------------------------------------------

Sorry not to have a fix, as I am reporting many bugs similar to
this one. The common hints are:

* If the only architecture-independent packages are dummy transitional
ones and they were released with jessie, the easy fix is to drop them
now.

* When using "dh", it is allowed to use (independently)
optional targets override_dh_foo-arch and override_dh_foo-indep
(for several values of "foo").


Once that both "dpkg-buildpackage -A" and "dpkg-buildpackage -B" work
properly, the package would be suitable to be uploaded in source-only
form if you wish.

Thanks.