Answer by who_knows

who_knows — Mon, 23 May 2011 17:14:44 -0400

It seems to me that you're comping without optmization. -O2 should be the minimum in your case. -Os is another choice.

Answer by Jazz

Jazz — Thu, 19 May 2011 09:25:25 -0400

Have you tried using another compiler like g++? g++ has a lot of optimization options, most notably -Os.

I haven't created shared libraries yet, so the following might not be correct or the best way to do it, but it might help you:

g++ -Os -fPIC -shared test1.cc -o test1.o
g++ -Os -fPIC -shared test2.cc -o test2.o
g++ -shared -Os test1.o test2.o -o libtest.so

ls -lA
-rwxr-xr-x  1 jazz users 5616 19. Mai 15:08 libtest.so
-rw-r--r--    1 jazz users   19 19. Mai 14:59 test1.cc
-rwxr-xr-x  1 jazz users 6500 19. Mai 15:09 test1.o
-rw-r--r--    1 jazz users   19 19. Mai 14:59 test2.cc
-rwxr-xr-x  1 jazz users 6500 19. Mai 15:03 test2.o

Furthermore, I changed

#include<iostream.h>

#include<iostream>

in the test-files. The difference is explained here.

You can also use strip! Strip can reduce the size of the object file by a significant amount, but debugging is hindered afterwards.

All this was done on the following x86_64 system:

Linux substitutedhostname 2.6.38-ARCH #1 SMP PREEMPT Fri May 13 09:24:47 CEST 2011 x86_64 Intel(R) Core(TM) i7 CPU M 620 @ 2.67GHz GenuineIntel GNU/Linux

Answers to: Size of the Library/Executable is high in LINUX

Answer by who_knows

Answer by Jazz