Jedi Knight Galaxies (JKG) is a multiplayer shooter with role playing elements, played out in the Star Wars universe. The project is a full conversion game modification for Jedi Knight: Jedi Academy.
For some reason on the Travis CI macOS builds, PNG_INCLUDE_DIRS is empty even when it should be identical to PNG_INCLUDE_DIR. As a result compilation fails since png.h cannot be found.
This PR adds PNG_INCLUDE_DIR to the include directory which does have the include path for png.h. Since PNG_INCLUDE_DIR is marked for deprecation and may stop working, we continue to use PNG_INCLUDE_DIRS as well since this is documented as the correct variable to use for include directories.
For some reason on the Travis CI macOS builds,
PNG_INCLUDE_DIRSis empty even when it should be identical toPNG_INCLUDE_DIR. As a result compilation fails sincepng.hcannot be found.This PR adds
PNG_INCLUDE_DIRto the include directory which does have the include path forpng.h. SincePNG_INCLUDE_DIRis marked for deprecation and may stop working, we continue to usePNG_INCLUDE_DIRSas well since this is documented as the correct variable to use for include directories.