[bug#47210] Enable ogg/flac/vorbis/opus support in libsndfile

[Ben Sturmfels via Guix-patches via <guix-patches@gnu.org>]

> Hi folks,
>
> This is small update to libsndfile as part of my effort to package
> MediaGoblin. Essentially, the ogg/flac/vorbis/opus support is only on if
> *all four* libraries are present, and opus is currently missing.

Hmm, have I broken something though? With this patch applied, my build
of libsndfile succeeds, but "sbc" seems to be failing. Or maybe I'm
doing something wrong?

$ ./pre-inst-env guix build libsndfile
$ echo $?
0
$ ./pre-inst-env guix build sbc
...
checking for SNDFILE... no
configure: error: sndfile library is required
command "/gnu/store/pwcp239kjf7lnj5i4lkdzcfcxwcfyk72-bash-minimal-5.0.16/bin/bash" "./configure" "CONFIG_SHELL=/gnu/store/pwcp239kjf7lnj5i4lkdzcfcxwcfyk72-bash-minimal-5.0.16/bin/bash" "SHELL=/gnu/store/pwcp239kjf7lnj5i4lkdzcfcxwcfyk72-bash-minimal-5.0.16/bin/bash" "--prefix=/gnu/store/nndszkyvfg56lgjnppivnm6fjsljls97-sbc-1.5" "--enable-fast-install" "--build=x86_64-unknown-linux-gnu" failed with status 1
builder for `/gnu/store/kbxzfb9lc9wp69q9p5zfcclxpd16jyj0-sbc-1.5.drv' failed with exit code 1
build of /gnu/store/kbxzfb9lc9wp69q9p5zfcclxpd16jyj0-sbc-1.5.drv failed
View build log at '/var/log/guix/drvs/kb/xzfb9lc9wp69q9p5zfcclxpd16jyj0-sbc-1.5.drv.bz2'.
guix build: error: build of `/gnu/store/kbxzfb9lc9wp69q9p5zfcclxpd16jyj0-sbc-1.5.drv' failed