I must have copied the wrong template. The correct one has ffmpeg-devel and terminates makedepends properly. I've added a do_build function with the cflags your specified, and removed the wrksrc directory. Everything is fine now, thanks.

new template

On Monday, February 2, 2015 at 6:47:21 AM UTC-6, Stefan Mühlinghaus wrote:

Several points I noticed:

1. The wrksrc-line is unneccessary, that is the default
   
2. The makedepends-line is not terminated correctly and it is missing the "ffmpeg-devel" package
   
3. Build in the do_build() function, not in pre_build()
   
4. Usually, calling make yourself like this is unneccessary. It is done automatically by setting the build_style to gnu-make. However, it won't compile like this without a little help:
   

do_build() {
        CFLAGS="-O2 -std=c99" make
}