[BusyBox] [PATCH] size optimization for fdformat.c

[Manuel Novoa III]

Hello,

On Thu, Jan 22, 2004 at 02:14:14PM +0000, Tito wrote:
> on the other side all the error obj files sum up to  about 9k so by using one
> function there would be size reduction to balance the overhead of one more arg for every function
> and also the number of x and other bb functions would decrease
> saving more space. 
>  
> -rw-r--r--    1 root     root          968 Jan  6 14:19 error_msg_and_die.o
> -rw-r--r--    1 root     root          864 Jan  6 14:19 error_msg.o
> -rw-r--r--    1 root     root          892 Jan  6 14:19 herror_msg_and_die.o
> -rw-r--r--    1 root     root          792 Jan  6 14:19 herror_msg.o
> -rw-r--r--    1 root     root          892 Jan  6 14:19 perror_msg_and_die.o
> -rw-r--r--    1 root     root          792 Jan  6 14:19 perror_msg.o
> -rw-r--r--    1 root     root          808 Jan  6 14:20 perror_nomsg_and_die.o
> -rw-r--r--    1 root     root          788 Jan  6 14:20 perror_nomsg.o
> -rw-r--r--    1 root     root         1080 Jan  6 14:20 verror_msg.o
> -rw-r--r--    1 root     root         1028 Jan  6 14:20 vherror_msg.o
> -rw-r--r--    1 root     root         1092 Jan  6 14:20 vperror_msg.o
>                                          tot. 9996
> 
> and last but not least we would have a more flexible (and easy) api which could
> lead to more size optimization.

The size reported by 'ls' is meaningless in this contexts.  You need to
use 'size' to see how much each object adds to the text, data, and bss
sections.

To get a breakdown of sizes for functions and data within an object
file, you can use something like 'nm -S --size-sort -t d <object file>'.

Manuel