--- ffmpeg-3.4.1.orig/ffbuild/pkgconfig_generate.sh	2017-12-10 22:35:06.000000000 +0100
+++ ffmpeg-3.4.1/ffbuild/pkgconfig_generate.sh	2017-12-24 20:55:30.186266110 +0100
@@ -29,8 +29,8 @@ version=$(grep ${name}_VERSION= $name/${
 cat <<EOF > $name/$fullname.pc
 prefix=$prefix
 exec_prefix=\${prefix}
-libdir=$libdir
-includedir=$incdir
+libdir=\${prefix}/lib
+includedir=\${prefix}/include
 
 Name: $fullname
 Description: $comment