koen@beast:/build/v2014.12/sources/meta-photography/recipes-photography$ cat /usr/lib/pkgconfig/sdl.pc
# sdl pkg-config source file

prefix=/usr
exec_prefix=/usr
libdir=/usr/lib
includedir=/usr/include

Name: sdl
Description: Simple DirectMedia Layer is a cross-platform multimedia library designed to provide low level access to audio, keyboard, mouse, joystick, 3D hardware via OpenGL, and 2D video framebuffer.
Version: 1.2.15
Requires:
Conflicts:
Libs: -L${libdir}  -lSDL  -lpthread
Libs.private: -lSDL  -lpthread  -lm -ldl -lts -lpthread
Cflags: -I${includedir}/SDL -D_GNU_SOURCE=1 -D_REENTRANT