/usr/bin/sudo: Permission denied in cygwin when installing "libpng-dev" -

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i getting error follows in cygwin

$ make g++  -o3 -w -wall -g  -c -o imageiopng.o imageiopng.cpp imageiopng.cpp:19:17: fatal error: png.h: no such file or directory compilation terminated. make: *** [<builtin>: imageiopng.o] error 1

after followin answer. png.h file not found - linux,

i had error in following,

$ sudo apt-get install libpng-dev -bash: /usr/bin/sudo: permission denied

i have read in linux, don't need write sudo, instead of can use yum. so, have tried yum install. but, says

 traceback (most recent call last):   file "/usr/bin/yum", line 22, in <module>     import yummain   file "/usr/share/yum/yummain.py", line 22, in <module>     import clientstuff   file "/usr/share/yum/clientstuff.py", line 18, in <module>     import rpm importerror: no module named rpm

almost, in every steps, getting errors. problem? yum useful package, seems installed not correctly.i have installed yum-2.0.7.

to install package on cygwin need use setup downloaded by
https://cygwin.com

see
https://cygwin.com/cygwin-ug-net/setup-net.html#setup-packages
how select packages.

yum not work , please note cygwin not linux. things works in same way not all.


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