xfonts-wqy: FTBFS: Type of arg 1 to shift must be array (not constant item) at ./bdfmerge.pl line 35, near "ARGV)"

Imported from Debian bug http://bugs.debian.org/808850:

Source: xfonts-wqy
Version: 1.0.0~rc1-1
Severity: serious
Justification: fails to build from source
User: <email address hidden>
Usertags: ftbfs
X-Debbugs-Cc: <email address hidden>

Dear Maintainer,

xfonts-wqy fails to build from source in unstable/amd64:

  [..]

   dpkg-buildpackage -rfakeroot -D -us -uc -b
  dpkg-buildpackage: source package xfonts-wqy
  dpkg-buildpackage: source version 1.0.0~rc1-1
  dpkg-buildpackage: source distribution unstable
  dpkg-buildpackage: source changed by ChangZhuo Chen (陳昌倬) <email address hidden>
   dpkg-source --before-build xfonts-wqy-1.0.0~rc1
  dpkg-buildpackage: host architecture amd64
   fakeroot debian/rules clean
  dh clean
     dh_testdir
     dh_auto_clean
   make -j1 clean
  make[1]: Entering directory '/home/lamby/temp/cdt.20151223192453.PThnk7KaAc/xfonts-wqy-1.0.0~rc1'
  rm -f wenquanyi_9pt.pcf wenquanyi_10pt.pcf wenquanyi_11pt.pcf wenquanyi_12pt.pcf wenquanyi_13px.pcf wenquanyi_9pt_cjk.bdf wenquanyi_10pt_cjk.bdf wenquanyi_11pt_cjk.bdf wenquanyi_12pt_cjk.bdf wenquanyi_13px_cjk.bdf
  make[1]: Leaving directory '/home/lamby/temp/cdt.20151223192453.PThnk7KaAc/xfonts-wqy-1.0.0~rc1'
     dh_clean
   debian/rules build
  dh build
     dh_testdir
     dh_auto_configure
     dh_auto_build
   make -j1
  make[1]: Entering directory '/home/lamby/temp/cdt.20151223192453.PThnk7KaAc/xfonts-wqy-1.0.0~rc1'
  ./bdfmerge.pl 0x0--0xFFFF wenquanyi_9pt.bdf > wenquanyi_9pt_cjk.bdf
  shift on reference is experimental at ./bdfmerge.pl line 35.
  Type of arg 1 to shift must be array (not constant item) at ./bdfmerge.pl line 35, near "ARGV)"
  Execution of ./bdfmerge.pl aborted due to compilation errors.
  Makefile:42: recipe for target 'wenquanyi_9pt.pcf' failed
  make[1]: *** [wenquanyi_9pt.pcf] Error 255
  make[1]: Leaving directory '/home/lamby/temp/cdt.20151223192453.PThnk7KaAc/xfonts-wqy-1.0.0~rc1'
  dh_auto_build: make -j1 returned exit code 2
  debian/rules:3: recipe for target 'build' failed
  make: *** [build] Error 2

  [..]

The full build log is attached.

Regards,

--
      ,''`.
     : :' : Chris Lamb
     `. `'` <email address hidden> / chris-lamb.co.uk
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