AC_PROG_CC
AC_PROG_CXX
PKG_CHECK_MODULES([Eigen3], [eigen3])
PKG_CHECK_MODULES([epoxy], [epoxy])
AC_PROG_CC
AC_PROG_CXX
PKG_CHECK_MODULES([Eigen3], [eigen3])
PKG_CHECK_MODULES([epoxy], [epoxy])
# Needed for unit tests and the demo app. We prefer SDL2 if possible,
# but can also use classic SDL.
# Needed for unit tests and the demo app. We prefer SDL2 if possible,
# but can also use classic SDL.
else
PKG_CHECK_MODULES([SDL_image], [SDL_image], [], [with_demo_app=no; AC_MSG_WARN([SDL_image not found, demo program will not be built])])
fi
else
PKG_CHECK_MODULES([SDL_image], [SDL_image], [], [with_demo_app=no; AC_MSG_WARN([SDL_image not found, demo program will not be built])])
fi
-PKG_CHECK_MODULES([libpng], [libpng12], [], [with_demo_app=no; AC_MSG_WARN([libpng12 not found, demo program will not be built])])
+PKG_CHECK_MODULES([libpng], [libpng], [], [with_demo_app=no; AC_MSG_WARN([libpng not found, demo program will not be built])])