Undefined symbols for architecture i386 error

extend
#1

I am getting error below.

Undefined symbols for architecture i386:
“_SetSystemUIMode”, referenced from:
ofAppGLFWWindow::setFullscreen(bool) in openFrameworksDebug.a(ofAppGLFWWindow.o)
ld: symbol(s) not found for architecture i386
clang: error: linker command failed with exit code 1 (use -v to see invocation)

is this familiar issue?
I’ve entered several similar posts but none have working answer for me

#2

which version of OF are you using. I think I got that error when I tried to run a 8.1 project with 8.0. ofAppGLFWWindow::setFullscreen(bool) must not be available. do a search to see where it is called