lib

[mchawi]

intro:
  linking together lots of utility-type files along with the main driver
  produces a fairly large (500K+) program, e.g.,
	"cc main.c stringsubs.o sort.o timesubs.o ttystuff.o"
  each 'utility' file has many functions (e.g., 'stringsubs.c' has
  50 functions). however, the program might use only a few of those.
wanted:
  find a way to link into the program only those functions that are used,
  in order to minimize program size (another case of VAX->ibm-pc porting).
vision:
  have a linker that can extract the code (probably would have to include
  all the data space for each file) into the executable file. perhaps you
  can link from a library you create first? 
alternatives:
	1) break up the utility files. the most obvious solution.
	disadvantages: lots of little files, e.g.
	"cc main.c string1.o string2.o string3.o sort.o ..."; you
	have to remember what functions are where. not elegant.

if i were to use only the functions i needed, i could make a 1 meg program
down to probably 250K. any ideas, system software engineers?
gregory, arnold2 at violet.berkeley
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