NDK build error with Cygwin.

[Robert Tattorn]

I am trying to build a shared library for Android from the C++ source files I got. I have setup and configured NDK with Cygwin, and set up my project files correctly. When I run cmd by opening cygwin.bat file and invoking ndk-build, I get these error messages:

/bin/sh: python: command not found

Android NDK: APP_PLATFORM not set. Defaulting to minimum supported version android-16.

make: python: No such file or directory

make: python: No such file or directory

make: python: No such file or directory

make: python: No such file or directory

[arm64-v8a] Compile++      : b3d <= 3ds.cpp

clang++.exe: error: argument to '-o' is missing (expected 1 value)

clang++.exe: error: no such file or directory: 'aarch64-none-linux-android21'

clang++.exe: error: no input files

What could be the problem? Is it in my source code?

[Dan Albert]

Don't use cygwin to run ndk-build. Use ndk-build.cmd.

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[Alias R. Cummins]

Could be anything. My advice is to avoid cygwin and build it on a linux VM

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[Robert Tattorn]

Ok, I just used commandline and when trying to build. I get these errors:

error: use of undeclared identifier 'GL_FOG'
error: use of undeclared identifier 'GL_FOG_MODE'

error: use of undeclared identifier 'GL_FOG_START'

error: use of undeclared identifier 'glOrtho'

and some others. I tried everything. I used #include <GLES2/gl2.h>

I even added this in Android.mk:  LOCAL_LDLIBS :=  -llog -landroid -lEGL  -lGLESv2

But still gives these errors. What could be wrong?

[Robert Tattorn]

Ok, I've seen the problem. The library is using desktop OpenGL version and some identifiers are not available in OpenGL-ES.