[BusyBox] BB_FEATURE_FBSET_READMODE

[Thomas Höhenleitner]

...
#define BB_FBSET
...
//Turn on extra fbset options
#define BB_FEATURE_FBSET_FANCY 
//Turn on fbset readmode support
#define BB_FEATURE_FBSET_READMODE    

causing following compiler output

fbset.c: In function `readmode':
fbset.c:224: `FB_VMODE_INTERLACED' undeclared (first use in this function)
fbset.c:224: (Each undeclared identifier is reported only once
fbset.c:224: for each function it appears in.)
fbset.c:232: `FB_VMODE_DOUBLE' undeclared (first use in this function)
fbset.c:240: `FB_SYNC_VERT_HIGH_ACT' undeclared (first use in this function)
fbset.c:248: `FB_SYNC_HOR_HIGH_ACT' undeclared (first use in this function)
fbset.c:256: `FB_SYNC_COMP_HIGH_ACT' undeclared (first use in this function)
fbset.c:264: `FB_SYNC_EXT' undeclared (first use in this function)
make: *** [fbset.o] Error 1

What may be wrong?

(switching BB_FEATURE_FBSET_READMODE off all compiles well)