programs/use_gcc.lua

   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