I made a tiny puzzle game for android using kinc.
https://play.google.com/store/apps/details?id=com.teenyglow.candycat

I didn't use kode, kha, haxe.

Now I want to port the game to html5.

I don't know how to build html5 makefile.

I generated makefile for html5

node Kore/make html5

set emscripten build environment

emsdk_env.bat

make

emmake make

I got following error message.
But, I checked that python is installed normally in that path.

/cygdrive/d/Projects/emsdk/upstream/emscripten/emcc: line 33: exec: D:\Projects\emsdk\python\3.7.4-pywin32_64bit\python.exe: not found
make: *** [makefile:3: kore.html] Error 127

I was able to compile individual source files successfully.

emcc -O2 -c ........

But, I couldn't compile it using a makefile.

What am I missing ?

Looks like an emscripten setup issue, it can't seem to find your python.exe. Can you compile regular emscripten projects?

PS: And as you're saying python is at that path - maybe it needs to use a cygwin style path (/cygdrive/d/...). But anyway, get regular emscripten projects going first.

Yes. I can compile regular emscripten projects.
I tested FreeType, bullet, sdl2.

I could build my game successfully when I compiled all the individual files one by one without using makefile.

I want to use makefile. But, I can't.

Hm, the makefile doesn't seem to do anything special. Looks to me like you should bring up this issue with the emscripten developers.
I use WSL for emscripten development by the way because the whole emscripten toolchain seems to be more at home on Linux.