media-libs/mlt-0.2.4-r1 uses for compilation a shell script which is marked #!/bin/sh but which uses bashism test "==". This fails if /bin/sh is a symlink to /bin/dash.
Created attachment 148638 [details, diff] Patch which removes the bashism An alternative way might be of course to replace #!/bin/sh by #!/bin/bash
applied, thanks. please dont forget to send it upstream too