Bug#728452: opal: FTBFS if $HOME does not exist

[Andreas Beckmann]

Package: opal
Version: 3.12.5~dfsg-1
Severity: serious
Justification: fails to build from source (but built successfully in the past)

opal/experimental fails to build on the buildds:

   debian/rules override_dh_auto_build
   make[1]: Entering directory `/«PKGBUILDDIR»'
   dh_auto_build -- opt docs
   Setting default OPALDIR to /«PKGBUILDDIR»
   make[2]: Entering directory `/«PKGBUILDDIR»'
   make[3]: Entering directory `/«PKGBUILDDIR»'
   make DEBUG_BUILD=no OPAL_SHARED_LIB=1
   rm -rf /«PKGBUILDDIR»/html
   cd 
   /bin/sh: 1: cd: can't cd to /sbuild-nonexistent
   make[3]: *** [docs] Error 2
   make[3]: *** Waiting for unfinished jobs....

The error happens on all architectures, excerpt is from
https://buildd.debian.org/status/fetch.php?pkg=opal&arch=i386&ver=3.12.5~dfsg-1&stamp=1378201705

Why does it call cd with no argument?


Andreas