Use prefix for *-config when cross-compiling. Rev: src/configure.in:1.756 Rev: src/modules/_Image_FreeType/configure.in:1.12 Rev: src/post_modules/GTK/configure.in:1.46 Rev: src/post_modules/SDL/configure.in:1.7 Rev: src/post_modules/_Image_SVG/configure.in:1.2