vfu compile stops with "error: ‘UKEY_ALT_UP’ was not declared in this scope"

[LarryDC]

Compiling VFU...
make: Entering directory '/mnt/storage/compile/vfu-dist/vfu'
DE see.o
CXX see.o
DE vfu.o
CXX vfu.o
vfu.cpp: In function ‘void vfu_run()’:
vfu.cpp:816:12: error: ‘UKEY_ALT_UP’ was not declared in this scope; did you mean ‘UKEY_ALT_P’?
816 | case UKEY_ALT_UP:
| ^~~~~~~~~~~
| UKEY_ALT_P
vfu.cpp:822:12: error: ‘UKEY_ALT_DOWN’ was not declared in this scope; did you mean ‘UKEY_ALT_D’?
822 | case UKEY_ALT_DOWN:
| ^~~~~~~~~~~~~
| UKEY_ALT_D
make: *** [Makefile:83: vfu.o] Error 1

What I've been doing is just commenting out the ALT_UP & ALT_DOWN lines and then it will compile.

I use the "vfu-get-latest-git-snapshot.pl" to pull the latest code. Then I just run "sh build.sh" in the vfu-dist directory.