New comment by not-chicken on void-packages repository

https://github.com/void-linux/void-packages/issues/20314#issuecomment-603071908

Comment:
It doesn't build because it needs patches to build with latest ffmpeg.
This fork is better suited for inclusion imo : https://github.com/withmorten/spek-alternative

```
# Template file for 'spek-alternative'
pkgname=spek-alternative
version=0.8.2.3
revision=1
build_style=gnu-configure
hostmakedepends="pkg-config automake intltool libtool"
makedepends="ffmpeg-devel gettext-devel wxWidgets-devel"
depends="ffmpeg"
short_desc="Acoustic spectrum analyser"
maintainer="Kartik Singh <kartik.ynwa@gmail.com>"
license="GPL-3.0-or-later"
homepage="https://github.com/withmorten/spek-alternative"
distfiles="https://github.com/withmorten/spek-alternative/archive/${version}.tar.gz"
checksum="007ba4b84a310b078e378aa84c8e80783db5821437a757a488c3ecec377e6b2a"

pre_configure() {
	./autogen.sh
}
```

Built and run on x86_64