pcap link patch

[David Scott Page]

Eddie,

I'm sorry for not being clear about the symptoms.

If ${PCAP_LIBS} contains a space, "test ${PCAP_LIBS-NO} = NO"
chokes. "test -z ${PCAP_LIBS}" seemed to be semantically equivalent,
but allow libpcap.so to be found by the runtime linker by specifying
"PCAP_LIBS='-L/opt/sfw/lib -R/opt/sfw/lib'" to configure.

PCAP is not part of Solaris proper, but is included in an accompanying
collection of open-source software that installs in /opt/sfw, and
hence is not found on the system library search path. Passing
"-R/opt/sfw/lib" via LDFLAGS (or LD_RUN_PATH) causes this path to be
added to all link commands in click, which is not correct. 

Linux would use "-r" instead of "-R", unless PCAP is part of the
distribution (or installed in /usr/local).

--
Scott

> 
> Hi Scott,
> 
> As for the PCAP_LIBS patch, I don't understand why your patch would have
> the effect you say you wanted. When you set PCAP_LIBS to anything other
> than NO, the test "if test ${PCAP_LIBS-NO} = NO;" should evaluate to false,
> same as "test -z ${PCAP_LIBS}"....?
> 
> Eddie
>