-lvorbisenc missing in LDFLAGS

[wbrana@…]

ibavcodec/libavcodec.a(libvorbis.o): In function `oggvorbis_encode_init':
libvorbis.c:(.text.unlikely+0x9d): undefined reference to `vorbis_encode_setup_vbr'
libvorbis.c:(.text.unlikely+0xd7): undefined reference to `vorbis_encode_setup_managed'
libvorbis.c:(.text.unlikely+0xf6): undefined reference to `vorbis_encode_ctl'
libvorbis.c:(.text.unlikely+0x12e): undefined reference to `vorbis_encode_ctl'
libvorbis.c:(.text.unlikely+0x13a): undefined reference to `vorbis_encode_setup_init'
collect2: ld returned 1 exit status
make: * [mencoder] Error 1
make: * Waiting for unfinished jobs....
libavcodec/libavcodec.a(libvorbis.o): In function `oggvorbis_encode_init':
libvorbis.c:(.text.unlikely+0x9d): undefined reference to `vorbis_encode_setup_vbr'
libvorbis.c:(.text.unlikely+0xd7): undefined reference to `vorbis_encode_setup_managed'
libvorbis.c:(.text.unlikely+0xf6): undefined reference to `vorbis_encode_ctl'
libvorbis.c:(.text.unlikely+0x12e): undefined reference to `vorbis_encode_ctl'
libvorbis.c:(.text.unlikely+0x13a): undefined reference to `vorbis_encode_setup_init'
collect2: ld returned 1 exit status
make: * [mplayer] Error 1

[diego@…]

This is missing too much information to even begin being useful. Reproducing the problem is impossible --> INVALID.

[spam3910807@…]

Hi!

I can provide additional information. Building mplayer-1.0rc4 fails in gentoo linux. To reproduce, try to build mplayer with external libvorbis (1.3.2) and mencoder enabled:

$ tar xjf MPlayer-1.0rc4.tar.bz2
$ cd MPlayer-1.0rc4
$ ./configure --prefix=/tmp/mplayer-build --disable-tremor-internal
$ make

libavcodec/libavcodec.a(libvorbis.o): In function `oggvorbis_encode_init':
libvorbis.c:(.text.unlikely+0xa9): undefined reference to `vorbis_encode_setup_vbr'
libvorbis.c:(.text.unlikely+0xc8): undefined reference to `vorbis_encode_setup_managed'
libvorbis.c:(.text.unlikely+0x100): undefined reference to `vorbis_encode_ctl'
libvorbis.c:(.text.unlikely+0x10c): undefined reference to `vorbis_encode_setup_init'
collect2: ld returned 1 exit status

Workaround is adding --extra-libs-mencoder=-lvorbisenc to configure or ldflags.

Bug is also discussed in gentoo bugzilla:
​https://bugs.gentoo.org/show_bug.cgi?id=344593