The instructions say:

I also have to change the "apxs" binary name in "configure" script to "apxs2" to pass the configuration process.

Your error message says

./configure: line 19467: apxs: command not found
./configure: line 19481: apxs: command not found
./configure: line 19485: apxs: command not found
./configure: line 19489: apxs: command not found
./configure: line 19489: apxs: command not found
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It seems to me that the two things are related. I would try following the instructions.