use BUILD_SHARED_LIBS to control whether a library is shared or static, make our bundled physfs library check for this configuration
sky = 179, 243, 243
border = 128, 128, 128
water-top = $54, $5C, $9D
water-bottom = $34, $3C, $7D
water-opacity = $80
music = Nature.ogg
clouds = 0
flakes = 0, 0, 0, 0, 0