Dogcows Code - chaz/yoink/blob - build/compile.lua

   1 #!/usr/bin/env lua
   2
   3 --
   4 -- Yoink
   5 -- This script wraps around the compiler command to handle the creation of
   6 -- dependency files.  It works with new versions of GCC.
   7 --
   8
   9
  10 -- Get the next argument passed to the script.
  11 function shift()
  12         var = arg[1]
  13         table.remove(arg, 1)
  14         arguments = string.format("%s %q", tostring(arguments), tostring(var))
  15         return var
  16 end
  17
  18
  19 -- The compiler command is the first argument.
  20 compiler        = shift()
  21 arguments       = ""
  22
  23
  24 -- Consume each compiler argument, appending it to the arguments variable.
  25 while 0 < #arg do
  26         local v = shift(arg)
  27         if v == "-o" then product = shift(arg) end
  28 end
  29 if not product then print("No output file specified.") os.exit(1) end
  30
  31
  32 -- Now try the actual compile WITH dependency generation.
  33 if os.execute(compiler.." -MD"..arguments) ~= 0 then
  34         -- Try it without dependency generation.
  35         if os.execute(compiler..arguments) ~= 0 then
  36                 print("The compile failed.  :-(")
  37                 os.exit(1)
  38         end
  39         print("The compile succeeded without dependency generation.")
  40         os.exit(0)
  41 end
  42
  43
  44 -- Remove the old dependency file.
  45 dep = product..".d"
  46 os.remove(dep)
  47
  48
  49 -- GCC outputs file.d for a product named file.o.
  50 gccdep = product:gsub("^.*/(.*)%.o$", "%1.d")
  51 tmpname = gccdep..".tmp"
  52
  53 -- Fix up the dependency file with correct paths.
  54 if os.execute("test -f "..gccdep) == 0 and os.rename(gccdep, tmpname) then
  55         os.execute(string.format("sed -e 's|.*:|%s %s:|' <%s >>%s", product, dep, tmpname, dep))
  56         os.execute(string.format("sed -e 's/^.*://' -e 's/^ *//' -e 's/ *\\\\$//' -e 's/$/:/' <%s >>%s", tmpname, dep))
  57         os.remove(tmpname)
  58 else
  59         print("Couldn't find the dependency file at "..gccdep..".")
  60         os.exit(1)
  61 end
  62