[Discuss] Compiling a binary

[noel at natnix.com]

You may want to link some dynamic libraries statically, but keep the
standard system libraries (like libc) dyncamically.

You can use ld -r to statically link a bunch of object files and
dynamic .so files to product anoter linkable static .o file.  Here's
an example that statically links in -lm, but still uses a dynamic libc:

    $ cat sin.c
    #include <math.h>
    #include <stdio.h>
    int main() { printf("sin(1)=%f\n", sin(1)); }

Statically combine sin.o and -lm into sin_lm.o

    $ cc -c sin.c
    $ ld -r -o sin+lm.o sin.o -lm

Produce final execuatble liked with dynamic libc

    $ cc -o sin+lm sin+lm.o
    $ ldd sin+lm
            libc.so.6 => /lib/tls/libc.so.6 (0x4001f000)
            /lib/ld-linux.so.2 (0x40000000)

--Noel


On Wed, Sep 20, 2006 at 10:43:34PM -0700, Hans Oeste wrote:
> I want to take a program that is currently being compiled to use the
> libraries currently installed i.e. linking to them,  to have the necessary
> libraries compiled into the binary so I can run the program on a computer
> that doesn't have those libraries installed.  Can some-one point me in the
> correct direction for the endeavor?
>  
> Hans
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