Makefile error make (e=2): The system cannot find the file specified

Question

I am using a makefile in windows to push some files on a Unix server (here a text file \"blob.txt\" in the same folder of my makefile). My makefile script is:

Answer 1

@user3869623's solution works for me. I'd like to share some details of mine to complete the picture.

My makefile contains below target:

clean:
    @echo '$(OS)'
ifeq ($(OS),Windows_NT)
    del /s *.o *.d *.elf *.map *.log
endif

When I run make clean, I see this error:

Since it says something went wrong with echo, so I change my makefile target to below:

clean:

ifeq ($(OS),Windows_NT)
    del /s *.o *.d *.elf *.map *.log
endif

This time, make clean gives me this error:

I am surprised to see bash here since I am working in Windows command line.

Then I checked my %PATH%, I see this entry:

C:\DevTools\Git\bin

There's a bash.exe and sh.exe in that path. So I removed this entry, and it works fine now.

BUT I STILL DON'T KNOW WHY BASH GET INTO THIS???

ADD 1

As to why the C:\DevTools\Git\bin shows up in my %PATH%, because I am using Sublime and it always asks me for the Git binaries: