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  1. CFLAGS_GENERIC = "-fno-ident -fomit-frame-pointer -fno-stack-check -fno-stack-protector -mno-stack-arg-probe -fno-exceptions -fno-asynchronous-unwind-tables -ffast-math -mno-ms-bitfields -march=pentium-mmx"
  2. CFLAGS_OPTIMIZE_SIZE = "-Os -mpreferred-stack-boundary=2 " .. CFLAGS_GENERIC
  3. CFLAGS_OPTIMIZE_SPEED = "-O2 -mpush-args -mno-accumulate-outgoing-args " .. CFLAGS_GENERIC
  4. -- The following could in specific cases be marginally faster CFLAGS_OPTIMIZE_SPEED,
  5. -- and in all cases gives a notable overhead in size.
  6. CFLAGS_OPTIMIZE_SPEED_INSANE = "-O2 " .. CFLAGS_GENERIC
  7. -- Default is optimizing by size. Override on per-project or per-file basis.
  8. CFLAGS = CFLAGS_OPTIMIZE_SIZE
  9.  
  10. CFLAGS_c = "" -- extra flags for *.c
  11. CFLAGS_cpp = " -fno-rtti" -- extra flags for *.cpp
  12. LDFLAGS = "-static -nostdlib -n --file-alignment=16 --section-alignment=16"
  13. INCLUDES = ""
  14. LIBS = ""
  15. LIBDEPS = {}
  16. OBJS = {}
  17.  
  18. function compile_gcc(input, output)
  19.   if not output then output = '%B.o' end
  20.   tup.append_table(OBJS,
  21.     tup.foreach_rule(input, "kos32-gcc -c " .. CFLAGS .. "$(CFLAGS_%e) " .. INCLUDES .. " -o %o %f", output)
  22.   )
  23. end
  24.  
  25. function link_gcc(input, output)
  26.   if not output then input,output = OBJS,input end
  27.   if STARTUP then
  28.     table.insert(LIBDEPS, STARTUP)
  29.     LDFLAGS = LDFLAGS .. " " .. STARTUP
  30.   end
  31.   if tup.getconfig("HELPERDIR") == "" and #LIBDEPS then
  32.     if type(input) == "string" then input = {input} end
  33.     if not input.extra_inputs then input.extra_inputs = {} end
  34.     tup.append_table(input.extra_inputs, LIBDEPS)
  35.   end
  36.  
  37.   if type(output) == "string" then output = {output} end
  38.   if not output.extra_outputs then output.extra_outputs = {} end
  39.   table.insert(output.extra_outputs, output[1] .. ".map")
  40.  
  41.   tup.rule(input,
  42.     "kos32-ld " .. LDFLAGS .. " -o %o %f -Map %o.map " .. LIBS .. " && kos32-objcopy %o -O binary " .. tup.getconfig("KPACK_CMD"),
  43.     output)
  44. end
  45.