LYNX-DEV lynx compilation error on NeXTstep 4.0

[Francisco A. Tomei Torres]

cc -DHAVE_CONFIG_H  -I. -I.. -I./chrtrans -I..
-I../WWW/Library/Implementation  -O2 -DNEXT -DXMOSAIC_HACK  -c ./LYStrings.c
./LYStrings.c: In function `LYgetch':
./LYStrings.c:558: `KEY_DOWN' undeclared (first use this function)
./LYStrings.c:558: (Each undeclared identifier is reported only once
./LYStrings.c:558: for each function it appears in.)
./LYStrings.c:561: `KEY_UP' undeclared (first use this function)
./LYStrings.c:564: `KEY_LEFT' undeclared (first use this function)
./LYStrings.c:567: `KEY_RIGHT' undeclared (first use this function)
./LYStrings.c:570: `KEY_HOME' undeclared (first use this function)
./LYStrings.c:573: `KEY_CLEAR' undeclared (first use this function)
./LYStrings.c:576: `KEY_NPAGE' undeclared (first use this function)
./LYStrings.c:579: `KEY_PPAGE' undeclared (first use this function)
./LYStrings.c:582: `KEY_LL' undeclared (first use this function)
./LYStrings.c:589: `KEY_A1' undeclared (first use this function)
./LYStrings.c:592: `KEY_A3' undeclared (first use this function)
./LYStrings.c:595: `KEY_B2' undeclared (first use this function)
./LYStrings.c:598: `KEY_C1' undeclared (first use this function)
./LYStrings.c:601: `KEY_C3' undeclared (first use this function)
./LYStrings.c:691: warning: unreachable code at beginning of switch statement
make[1]: *** [LYStrings.o] Error 1
make[1]: Leaving directory `/root/temp/lynx2-7-1/src'
make: *** [all] Error 2