Re: -lgmp not working, please help.

[Richard Dawe]

Hello.

Ragbir S. Chana wrote:
> I am using cygwin under Win2K,  5.00.2195, Service Pack 4 (just upgraded 
> from SP3 yesterday but no change).
> Name of the computer: mecury.
> AMD Athlon Processor AT/AT COMPATIABLE.
> 523,740 KB RAM
>  
> cygwin was installed recently under the following directory:
> c:\cygwin
>  
> gmp is installed under gmp-4.1.2, as follows:
> C:\cygwin\usr\gmp-4.1.2
[snip]
> When I try to link with gmp libraries, I get the following message
> address@hidden <mailto:address@hidden> ~/programs
> $ gcc -o test1 test1.c -lgmp
> /usr/lib/gcc-lib/i686-pc-cygwin/3.2/../../../../i686-pc-cygwin/bin/ld: 
> cannot find -lgmp
> collect2: ld returned 1 exit status
[snip]

It looks like you haven't install gmp into one of the standard prefixes: 
/usr or /usr/local (which I guess are actually c:\cygwin\usr and 
c:\cygwin\usr\local). So ld won't be able to find libgmp.a.

I think you need to include a -L option in the link line, like this:

    gcc -L/usr/gmp-4.1.2/lib -o test1 test1.c -lgmp

Hope that helps, regards,

--
Richard Dawe [ http://homepages.nildram.co.uk/~phekda/richdawe/ ]

"You can't evaluate a man by logic alone."
  -- McCoy, "I, Mudd", Star Trek