rutorrent builds fails on develop head

[Strangelovian]

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Setup

_Package Name: rutorrent
Package Version: develop head

NAS Model: any
NAS Architecture: all arch
DSM version: 6.1

Expected behavior

Should build on all arch

Actual behavior

Tell us what happens instead

Steps to reproduce

1. clone spksrc
2. run docker spkrc image
3. cd spk/ruttorent; make arch-x64

Other logs

Here the compile error with snippet:

wget https://github.com/rakshasa/libtorrent/archive/v0.13.6.tar.gz
2020-08-30 21:54:04 URL:https://codeload.github.com/rakshasa/libtorrent/tar.gz/v0.13.6 [340818] -> "libtorrent-0.13.6.tar.gz.part" [1]
...
===>  Extracting for libtorrent
tar -xzpf /spksrc/cross/libtorrent-rakshasa/../../distrib/libtorrent-0.13.6.tar.gz -C /spksrc/spk/rutorrent/work-x64-6.1
===>  Patching for libtorrent
aclocal...
configure.ac:22: warning: macro 'AM_PATH_CPPUNIT' not found in library
autoheader...
libtoolize... using libtoolize
automake...
configure.ac:3: installing './compile'
configure.ac:3: installing './config.guess'
configure.ac:3: installing './config.sub'
configure.ac:20: installing './install-sh'
configure.ac:20: installing './missing'
src/Makefile.am: installing './depcomp'
parallel-tests: installing './test-driver'
autoconf...
configure.ac:22: error: possibly undefined macro: AM_PATH_CPPUNIT
      If this token and others are legitimate, please use m4_pattern_allow.
      See the Autoconf documentation.

[publicarray]

Thanks for your report, Since #4209 is merged it should work again.

[Strangelovian]

confirmed