All 24 source files compile and link for DOS/4GW 32-bit target using
OpenWatcom V2 cross-compiler (wcc386 -bt=dos -mf -za99 -D__MSDOS__).
Platform portability fixes:
- hal_dos.c: use int386() instead of int86() for 32-bit DOS
- interp.c: mkdir() 1-arg on DOS, _dos_findfirst/findnext for FILES,
monotonic_time() portable wrapper for clock_gettime/clock()
- virmem.c: replace clock_gettime with portable time()/localtime()
- graphics.c: define M_PI, avoid non-constant aggregate initializers
- tui.c: guard sys/ioctl.h and sigaction, use signal() on DOS,
use HAL screen size instead of TIOCGWINSZ
Produces: gwbasic.exe (154KB LE executable, requires DOS4GW.EXE)
Linux build and all 72+14+69 tests unaffected.
Eremey Valetov
8ff9ff22bf