A symbolic link to libSDL_gfx.so is missing. When I list all the libSDL_gfx* files in /usr/lib64, only these two files are present: /usr/lib64/libSDL_gfx.so.15 /usr/lib64/libSDL_gfx.so.15.9.1 I fixed the problem by making these symbolic link (the .so file is required for linking files).
Hi. The development symlinks are almost always present in the *-devel subpackage. Remove the manually created symlink and install SDL_gfx-devel. That should solve your prolem.