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Re: BUILDING A SHARED LIBRARY



Shalom and thanks, 


Gilad Gam wrote:
> 
> Hi,
> 
> Meir wrote:
> 
> > I'm trying to create a shared library on a regular Linux system (1.2.3)
> > and when I type this:
> >
> > gcc -shared -o libstam.so libstam.o
> >
> > I get this:
> >
> >
> > /usr/lib/crt0.o(.text+0x1): undefined reference to
> > `__load_shared_libraries'
> > /usr/lib/crt0.o(.text+0x12): undefined reference to `___brk_addr'
> > /usr/lib/crt0.o(.text+0x1b): undefined reference to `__environ'
> > /usr/lib/crt0.o(.text+0x22): undefined reference to `__fpu_control'
> > /usr/lib/crt0.o(.text+0x28): undefined reference to `__setfpucw'
> > /usr/lib/crt0.o(.text+0x30): undefined reference to `__libc_init'
> > /usr/lib/crt0.o(.text+0x35): undefined reference to `main'
> > /usr/lib/crt0.o(.text+0x3b): undefined reference to `exit'
> > libstam.o(.text+0x2a): undefined reference to `getpid'
> > libstam.o(.text+0x35): undefined reference to `printf'
> > libstam.o(.text+0x74): undefined reference to `fork'
> > libstam.o(.text+0x8b): undefined reference to `execl'
> > libstam.o(.text+0x90): undefined reference to `getpid'
> > libstam.o(.text+0x96): undefined reference to `getppid'
> > libstam.o(.text+0xa1): undefined reference to `printf'
> >
> >
> > What's wrong ?
> >
> 
> What installation do you have? If it's not ELF, then the chances of success in producing shared libraries are rather slim - it's a long process described in one of the HOWTO's

I don't have ELF :-(. Do you know which HOWTO discribe the procedure ?

 
> 
> If you do have ELF, then it should be quite simple. Read the ELF-HOWTO to get the exact instructions about producing shared libraries.
> 
> Gilad

-- Meir <meir@bis.co.il>