Re: [lwip-devel] LWIP on Cortex-M1

[Dittrich, Matthew]

Here are some numbers from GCC 4.5.2 with no optimizations for my M3 against 
some "post 1.4.0 git" build:

   text    data     bss     dec     hex filename
   4096   15704       0   19800    4d58 ./bin/src/emac.o
   1628      80       0    1708     6ac ./bin/src/ethernet.o
    992       0       0     992     3e0 ./bin/lwip/arch/ethernetif.o
     16       0       0      16      10 ./bin/lwip/arch/sys_arch.o
   3492       0     164    3656     e48 ./bin/lwip/netif/etharp.o
   1532       0       0    1532     5fc ./bin/lwip/core/ipv4/autoip.o
   1012       0       0    1012     3f4 ./bin/lwip/core/ipv4/icmp.o
   1188       0       0    1188     4a4 ./bin/lwip/core/ipv4/inet_chksum.o
      0       0       0       0       0 ./bin/lwip/core/ipv4/inet.o
   1264       0      16    1280     500 ./bin/lwip/core/ipv4/ip_addr.o
   2668       0       8    2676     a74 ./bin/lwip/core/ipv4/ip_frag.o
   2044       0       2    2046     7fe ./bin/lwip/core/ipv4/ip.o
    144       0       0     144      90 ./bin/lwip/core/def.o
   7124       4       0    7128    1bd8 ./bin/lwip/core/dhcp.o
      0       0       0       0       0 ./bin/lwip/core/dns.o
     32       0       0      32      20 ./bin/lwip/core/init.o
   1668    7188      12    8868    22a4 ./bin/lwip/core/mem.o
    788    7128      40    7956    1f14 ./bin/lwip/core/memp.o
   1100       0       1    1101     44d ./bin/lwip/core/netif.o
   3836       0       0    3836     efc ./bin/lwip/core/pbuf.o
      0       0       0       0       0 ./bin/lwip/core/raw.o
    528       0       0     528     210 ./bin/lwip/core/stats.o
      0       0       0       0       0 ./bin/lwip/core/sys.o
   8676       0      48    8724    2214 ./bin/lwip/core/tcp_in.o
   5416       0       0    5416    1528 ./bin/lwip/core/tcp_out.o
   5348      24       1    5373    14fd ./bin/lwip/core/tcp.o
   1004       0      12    1016     3f8 ./bin/lwip/core/timers.o
   2224       0       0    2224     8b0 ./bin/lwip/core/udp.o
    716       0       0     716     2cc ./bin/lwip/netbios/netbios.o
   1060       0      48    1108     454 ./bin/lwip/netbios/nbns.o
      0       0       0       0       0 ./bin/lwip/netio/netio.o
   2356       0      12    2368     940 ./bin/lwip/core/ipv4/igmp.o

Which totals 61952 bytes of text (which includes my drivers, but no other 
library code that gets pulled in).  When optimizing for size (-Os), the total 
is 31480. My project doesn't build when I switch it to M1, so I can't help with 
those numbers... but I'd consider this is a pretty "full featured" RAW API 
configuration.  If you don't need good TCP, uIP might be more appropriate?

MD