Bug#778116: shell-fm: ftbfs with GCC-5

[Matthias Klose <doko@debian.org>]

Package: src:shell-fm
Version: 0.7+git20100414-2
Severity: normal
Tags: sid stretch
User: debian-gcc@lists.debian.org
Usertags: ftbfs-gcc-5

Please keep this issue open in the bug tracker for the package it
was filed for.  If a fix in another package is required, please
file a bug for the other package (or clone), and add a block in this
package. Please keep the issue open until the package can be built in
a follow-up test rebuild.

The package fails to build in a test rebuild on at least amd64 with
gcc-5/g++-5, but succeeds to build with gcc-4.9/g++-4.9. The
severity of this report may be raised before the stretch release.

The full build log can be found at:
http://people.debian.org/~doko/logs/gcc5-20150205/shell-fm_0.7+git20100414-2_unstable_gcc5.log
The last lines of the build log are at the end of this report.

To build with GCC 5, either set CC=gcc-5 CXX=g++-5 explicitly,
or install the gcc, g++, gfortran, ... packages from experimental.

  apt-get -t experimental install g++ 

Common build failures are C11 as the default C mode, new warnings
resulting in build failures with -Werror turned on, or new/dropped
symbols in Debian symbols files.  For other C/C++ related build failures
see the porting guide at http://gcc.gnu.org/gcc-5/porting_to.html

[...]
cc -MD -W -I./include/ -DLIBAO     -c -o tag.o tag.c
cc -MD -W -I./include/ -DLIBAO     -c -o play.o play.c
cc -MD -W -I./include/ -DLIBAO     -c -o util.o util.c
cc -MD -W -I./include/ -DLIBAO     -c -o submit.o submit.c
cc -MD -W -I./include/ -DLIBAO     -c -o completion.o completion.c
cc -MD -W -I./include/ -DLIBAO     -c -o http.o http.c
cc -MD -W -I./include/ -DLIBAO     -c -o feeds.o feeds.c
cc -MD -W -I./include/ -DLIBAO     -c -o getln.o getln.c
cc -MD -W -I./include/ -DLIBAO     -c -o history.o history.c
ar -cvq libshellfm.a settings.o interface.o xmlrpc.o readline.o playlist.o service.o md5.o split.o hash.o radio.o sckif.o autoban.o ropen.o pipe.o strary.o recommend.o bookmark.o tag.o play.o util.o submit.o completion.o http.o feeds.o getln.o history.o
a - settings.o
a - interface.o
a - xmlrpc.o
a - readline.o
a - playlist.o
a - service.o
a - md5.o
a - split.o
a - hash.o
a - radio.o
a - sckif.o
a - autoban.o
a - ropen.o
a - pipe.o
a - strary.o
a - recommend.o
a - bookmark.o
a - tag.o
a - play.o
a - util.o
a - submit.o
a - completion.o
a - http.o
a - feeds.o
a - getln.o
a - history.o
cc -MD -W -I./include/ -DLIBAO    main.c libshellfm.a -lmad  -lao  -o shell-fm
libshellfm.a(play.o): In function `output':
play.c:(.text+0xd7b): undefined reference to `scale'
play.c:(.text+0xdbe): undefined reference to `scale'
collect2: error: ld returned 1 exit status
make[2]: *** [shell-fm] Error 1
Makefile:46: recipe for target 'shell-fm' failed
make[2]: Leaving directory '/«BUILDDIR»/shell-fm-0.7+git20100414/source'
make[1]: *** [shell-fm] Error 2
Makefile:12: recipe for target 'shell-fm' failed
make[1]: Leaving directory '/«BUILDDIR»/shell-fm-0.7+git20100414'
make: *** [build-stamp] Error 2
debian/rules:18: recipe for target 'build-stamp' failed
dpkg-buildpackage: error: debian/rules build gave error exit status 2