Bug#806087: ocaml: FTBFS when built with dpkg-buildpackage -A (No such file or directory)

[Santiago Vila <sanvila@debian.org>]

Package: src:ocaml
Version: 4.02.3-5
User: sanvila@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:

--------------------------------------------------------------------------------
[...]
 fakeroot debian/rules binary-indep
dh binary-indep
   dh_testroot -i
   dh_prep -i
   dh_installdirs -i
   debian/rules override_dh_auto_install
make[1]: Entering directory '/<<PKGBUILDDIR>>'
/usr/bin/make -C emacs \
  EMACSDIR=/<<PKGBUILDDIR>>/debian/ocaml-mode/usr/share/emacs/site-lisp/ocaml-mode \
  NOCOMPILE=true simple-install
make[2]: Entering directory '/<<PKGBUILDDIR>>/emacs'
Installing in /<<PKGBUILDDIR>>/debian/ocaml-mode/usr/share/emacs/site-lisp/ocaml-mode...
if test -d /<<PKGBUILDDIR>>/debian/ocaml-mode/usr/share/emacs/site-lisp/ocaml-mode; then : ; else mkdir -p /<<PKGBUILDDIR>>/debian/ocaml-mode/usr/share/emacs/site-lisp/ocaml-mode; fi
cp caml-font.el caml-hilit.el caml.el camldebug.el inf-caml.el caml-compat.el caml-help.el caml-types.el caml-xemacs.el caml-emacs.el /<<PKGBUILDDIR>>/debian/ocaml-mode/usr/share/emacs/site-lisp/ocaml-mode
if [ -z "true" ]; then \
  cd /<<PKGBUILDDIR>>/debian/ocaml-mode/usr/share/emacs/site-lisp/ocaml-mode; emacs --batch --eval '(progn (setq load-path (cons "." load-path)) (byte-compile-file "caml-xemacs.el") (byte-compile-file "caml-emacs.el") (byte-compile-file "caml.el") (byte-compile-file "inf-caml.el") (byte-compile-file "caml-help.el") (byte-compile-file "caml-types.el") (byte-compile-file "caml-font.el") (byte-compile-file "camldebug.el"))'; \
fi
make[2]: Leaving directory '/<<PKGBUILDDIR>>/emacs'
if ! head -n 1 emacs/ocamltags.in | grep -q '^#!/bin/sh'; then \
  sed -i -e '1 i #!/bin/sh' emacs/ocamltags.in; \
fi
/usr/bin/make -C emacs SCRIPTDIR=/<<PKGBUILDDIR>>/debian/ocaml-mode/usr/bin install-ocamltags

[... snipped ...]

fi
for u in dumpobj; do \
  if [ -f tools/$u ]; then \
    cp tools/$u debian/ocaml-nox/usr/bin/ocaml$u; \
  fi \
done
cp: cannot create regular file 'debian/ocaml-nox/usr/bin/ocamldumpobj': No such file or directory
debian/rules:190: recipe for target 'install-stamp' failed
make[1]: *** [install-stamp] Error 1
make[1]: Leaving directory '/<<PKGBUILDDIR>>'
debian/rules:78: 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, but I can give some general hints:

* If all the arch-independent packages are dummy transitional packages
released with jessie, the easy fix is to drop them now.
 
* If not, debian/rules should be modified so that the binary-indep
target works in all cases, even when binary-arch is not used (this is
what the "Architecture: all" autobuilder does). For that:
    
* If you are using debhelper, you might want to use options -a and -i
for dh_* commands so that they do not act on packages they do not
have to act.

* Also, if you are using dh, the (independently) optional targets
override_dh_foo-arch and override_dh_foo-indep (for several values
of "foo") may be useful to write a debian/rules which behaves exactly
as desired.


After checking that both "dpkg-buildpackage -A" and "dpkg-buildpackage -B"
work properly, this package will be suitable to be uploaded in
source-only form if you wish (you might want to try it).

Thanks.