Platform: MacOS
Try to build vapor from source. Set "BUILD_DOXYGEN = 0" in options.mk. The build process reports error if there's no doxygen on the system.
Update:
This bug is also observed on Linux platform.
Update: it is the site.mk file changing the BUILD_DOXYGEN value, and VAPOR handles this correctly.
Diff:
Let Sam make sure it's not the site.mk file changing behaviors.
Diff: