Re: Library path with AC_CHECK_LIB

[Assar Westerlund]

Bill Moseley <address@hidden> writes:
> I was building our package on a Solaris 2.6 machine and ended up with:
> 
>   ld: fatal: library -lz: not found
> 
> On this machine libz is in /usr/local/lib.
> 
> Running truss shows:
> 
> open("/usr/ccs/lib/libz.so", O_RDONLY)          Err#2 ENOENT
> open("/usr/ccs/lib/libz.a", O_RDONLY)           Err#2 ENOENT
> open("/usr/lib/libz.so", O_RDONLY)              Err#2 ENOENT
> open("/usr/lib/libz.a", O_RDONLY)               Err#2 ENOENT
> ld: write(2, " l d :  ", 4)                             = 4
> fatal: write(2, " f a t a l :  ", 7)                    = 7
> library -lwrite(2, " l i b r a r y   - l", 10)          = 10
> zwrite(2, " z", 1)                              = 1
> : not foundwrite(2, " :   n o t   f o u n d", 11)               = 11
> 
> So it's not looking in /usr/local/lib.
> 
> So my question is why is configure finding libz?

I can only guess that this happens because the compiler/linker and/or
flags are different between the link that succeeds at configure-time
and the one that fails at make-time.

You'll have to look through config.log to find the actual command that
worked.