+# force this include dir no matter what, so we get sane headers.
+set(OPENGL_INCLUDE_DIR "${DEPDIR}/OpenGL")
+
+find_package(OpenAL REQUIRED) # !!! FIXME: package a .dll for Windows?
+
+find_package(SDL)
+if (NOT SDL)
+ set(LUGARU_MISSING_DEPS "${LUGARU_MISSING_DEPS} SDL")
+ message(STATUS "SDL not found, using internal copy")
+ set(SDLDIR "${DEPDIR}/SDL12")
+ set(SDL_INCLUDE_DIR "${SDLDIR}/include")
+ set(SDL_LIBRARY "")
+ if (APPLE)
+ set(LUGARU_HAS_INTERNAL_SDL True)
+ set(SDL_LIBRARY
+ ${SDLDIR}/lib/macosx/libSDL-1.2.0.dylib
+ ${SDLDIR}/lib/macosx/libSDLmain-osx.a
+ )
+ endif (APPLE)
+
+ if (WINDOWS)
+ set(LUGARU_HAS_INTERNAL_SDL True)
+ set(SDL_LIBRARY
+ ${SDLDIR}/lib/win32/SDL.lib
+ ${SDLDIR}/lib/win32/SDLmain.lib
+ )
+ endif (WINDOWS)
+
+ if (NOT LUGARU_HAS_INTERNAL_SDL)
+ message(ERROR "We don't have a prebuilt SDL for this platform.")
+ endif (NOT LUGARU_HAS_INTERNAL_SDL)
+endif (NOT SDL)
+
+find_package(PNG)
+if (NOT PNG)
+ set(LUGARU_MISSING_DEPS "${LUGARU_MISSING_DEPS} PNG")
+ message(STATUS "libpng not found, using internal copy")
+ set(PNGDIR "${DEPDIR}/libpng")
+ set(PNG_INCLUDE_DIR "${PNGDIR}")
+ set(PNG_LIBRARY "")
+ set(LUGARU_SRCS
+ ${LUGARU_SRCS}
+ ${PNGDIR}/png.c
+ ${PNGDIR}/pngerror.c
+ ${PNGDIR}/pngget.c
+ ${PNGDIR}/pngmem.c
+ ${PNGDIR}/pngpread.c
+ ${PNGDIR}/pngread.c
+ ${PNGDIR}/pngrio.c
+ ${PNGDIR}/pngrtran.c
+ ${PNGDIR}/pngrutil.c
+ ${PNGDIR}/pngset.c
+ ${PNGDIR}/pngtrans.c
+ ${PNGDIR}/pngwio.c
+ ${PNGDIR}/pngwrite.c
+ ${PNGDIR}/pngwtran.c
+ ${PNGDIR}/pngwutil.c
+ )
+endif (NOT PNG)
+
+find_package(JPEG)
+if (NOT JPEG)
+ set(LUGARU_MISSING_DEPS "${LUGARU_MISSING_DEPS} JPEG")
+ message(STATUS "libjpeg not found, using internal copy")
+ set(JPEGDIR "${DEPDIR}/libjpeg")
+ set(JPEG_INCLUDE_DIR "${JPEGDIR}")
+ set(JPEG_LIBRARY "")
+ set(LUGARU_SRCS
+ ${LUGARU_SRCS}
+ ${JPEGDIR}/jdapistd.c
+ ${JPEGDIR}/jdmaster.c
+ ${JPEGDIR}/jdapimin.c
+ ${JPEGDIR}/jcapimin.c
+ ${JPEGDIR}/jdmerge.c
+ ${JPEGDIR}/jdatasrc.c
+ ${JPEGDIR}/jdatadst.c
+ ${JPEGDIR}/jdcoefct.c
+ ${JPEGDIR}/jdcolor.c
+ ${JPEGDIR}/jddctmgr.c
+ ${JPEGDIR}/jdhuff.c
+ ${JPEGDIR}/jdinput.c
+ ${JPEGDIR}/jdmainct.c
+ ${JPEGDIR}/jdmarker.c
+ ${JPEGDIR}/jdpostct.c
+ ${JPEGDIR}/jdsample.c
+ ${JPEGDIR}/jdtrans.c
+ ${JPEGDIR}/jerror.c
+ ${JPEGDIR}/jidctflt.c
+ ${JPEGDIR}/jidctfst.c
+ ${JPEGDIR}/jidctint.c
+ ${JPEGDIR}/jmemmgr.c
+ ${JPEGDIR}/jutils.c
+ ${JPEGDIR}/jmemnobs.c
+ ${JPEGDIR}/jquant1.c
+ ${JPEGDIR}/jquant2.c
+ ${JPEGDIR}/jcomapi.c
+ ${JPEGDIR}/jcmarker.c
+ ${JPEGDIR}/jcapistd.c
+ ${JPEGDIR}/jcparam.c
+ ${JPEGDIR}/jcinit.c
+ ${JPEGDIR}/jcdctmgr.c
+ ${JPEGDIR}/jccoefct.c
+ ${JPEGDIR}/jcmainct.c
+ ${JPEGDIR}/jfdctflt.c
+ ${JPEGDIR}/jfdctint.c
+ ${JPEGDIR}/jfdctfst.c
+ ${JPEGDIR}/jchuff.c
+ ${JPEGDIR}/jcsample.c
+ ${JPEGDIR}/jcmaster.c
+ ${JPEGDIR}/jccolor.c
+ ${JPEGDIR}/jcprepct.c
+ ${JPEGDIR}/jcarith.c
+ ${JPEGDIR}/jdarith.c
+ ${JPEGDIR}/jaricom.c
+ )
+endif (NOT JPEG)
+
+find_package(ZLIB)
+if (NOT ZLIB)
+ set(LUGARU_MISSING_DEPS "${LUGARU_MISSING_DEPS} ZLIB")
+ message(STATUS "zlib not found, using internal copy")
+ set(ZLIBDIR "${DEPDIR}/zlib")
+ set(ZLIB_INCLUDE_DIR "${ZLIBDIR}")
+ set(ZLIB_LIBRARIES "")
+ set(LUGARU_SRCS
+ ${LUGARU_SRCS}
+ ${ZLIBDIR}/adler32.c
+ ${ZLIBDIR}/compress.c
+ ${ZLIBDIR}/crc32.c
+ ${ZLIBDIR}/deflate.c
+ ${ZLIBDIR}/infback.c
+ ${ZLIBDIR}/inffast.c
+ ${ZLIBDIR}/inflate.c
+ ${ZLIBDIR}/inftrees.c
+ ${ZLIBDIR}/trees.c
+ ${ZLIBDIR}/uncompr.c
+ ${ZLIBDIR}/zutil.c
+ )
+endif (NOT ZLIB)
+
+find_package(GLU)
+if (NOT GLU)
+ set(LUGARU_MISSING_DEPS "${LUGARU_MISSING_DEPS} GLU")
+ message(STATUS "GLU not found, using internal copy")
+ set(GLUDIR "${DEPDIR}/GLU")
+ set(GLU_INCLUDE_DIR "${GLUDIR}")
+ set(GLU_LIBRARY "")
+ set(LUGARU_SRCS
+ ${LUGARU_SRCS}
+ ${GLUDIR}/dict.c
+ ${GLUDIR}/geom.c
+ ${GLUDIR}/memalloc.c
+ ${GLUDIR}/mesh.c
+ ${GLUDIR}/mipmap.c
+ ${GLUDIR}/normal.c
+ ${GLUDIR}/priorityq.c
+ ${GLUDIR}/render.c
+ ${GLUDIR}/sweep.c
+ ${GLUDIR}/tess.c
+ ${GLUDIR}/tessmono.c
+ ${GLUDIR}/util.c
+ )
+endif (NOT GLU)
+
+find_package(OggVorbis)
+if (NOT OggVorbis)
+ set(LUGARU_MISSING_DEPS "${LUGARU_MISSING_DEPS} OggVorbis")
+ message(STATUS "Ogg Vorbis not found, using internal copy")
+ set(OGGDIR "${DEPDIR}/libogg")
+ set(OGG_INCLUDE_DIR "${OGGDIR}/include")
+ set(OGG_LIBRARY "")
+ set(VORBISDIR "${DEPDIR}/libvorbis")
+ set(VORBISFILE_INCLUDE_DIR "${VORBISDIR}/include")
+ set(VORBISFILE_LIBRARY "")
+ set(LUGARU_SRCS
+ ${LUGARU_SRCS}
+ ${OGGDIR}/src/bitwise.c
+ ${OGGDIR}/src/framing.c
+ ${VORBISDIR}/lib/analysis.c
+ ${VORBISDIR}/lib/bitrate.c
+ ${VORBISDIR}/lib/block.c
+ ${VORBISDIR}/lib/codebook.c
+ ${VORBISDIR}/lib/envelope.c
+ ${VORBISDIR}/lib/floor0.c
+ ${VORBISDIR}/lib/floor1.c
+ ${VORBISDIR}/lib/info.c
+ ${VORBISDIR}/lib/lpc.c
+ ${VORBISDIR}/lib/lsp.c
+ ${VORBISDIR}/lib/mapping0.c
+ ${VORBISDIR}/lib/mdct.c
+ ${VORBISDIR}/lib/psy.c
+ ${VORBISDIR}/lib/registry.c
+ ${VORBISDIR}/lib/res0.c
+ ${VORBISDIR}/lib/sharedbook.c
+ ${VORBISDIR}/lib/smallft.c
+ ${VORBISDIR}/lib/synthesis.c
+ ${VORBISDIR}/lib/vorbisfile.c
+ ${VORBISDIR}/lib/window.c
+ )
+endif (NOT OggVorbis)