Re: libpcap not found by configure

[Edin Dizdarevic <edin.dizdarevic () interActive-Systems de>]

Hi,

James Schnack wrote:
> Guillaume, thanks for your reply. I had already tested with and without
> the trailing slash, but that did not change things...  :-(
>
> Great suggestion the one regarding strace... I installed it and ran it,
> but it really does not show anything like *where* it's looking for the
> libraries (at least, not to me; there's not much text in the output...
> it's mainly hex addresses, pointer values, and the like).
>
> Any other ideas, out there ?

Well...

try this:

[root@ed snort-2.0.1]# strace -f `pwd`/configure 2>&1 | grep pcap

"-f" stands for follow forks. You didn't see it because configure is
starting subshells for some tests so this ist the output on my system.


write(1, "checking for pcap_datalink in -l"..., 40checking for
pcap_datalink in -lpcap... ) = 40
[pid  5344] execve("/usr/bin/gcc", ["gcc", "-o", "conftest", "-g",
"-O2", "-Wall", "conftest.c", "-lpcap", "-lm", "-lnsl"], [/* 36 vars
*/]) = 0
[pid  5404] write(1, "LIBS=\'-lpcap -lm -lnsl \'\n", 25) = 25
[pid  5408] write(1, "LIBS=\'-lpcap -lm -lnsl \'\n", 25) = 25
[pid  5408] write(1, "ac_cv_lib_pcap_pcap_datalink=yes"..., 33) = 33
[pid  5408] write(1, "extra_incl=-I/usr/include/pcap\n", 31) = 31
[pid  5408] write(1, "with_libpcap_includes=no\n", 25) = 25
[pid  5408] write(1, "with_libpcap_libraries=no\n", 26) = 26
[pid  5404] write(1, "ac_cv_lib_pcap_pcap_datalink=yes"..., 33
<unfinished ...>
[pid  5410] <... read resumed> "ac_cv_lib_pcap_pcap_datalink=yes"...,
4096) = 33
[pid  5404] write(1, "extra_incl=-I/usr/include/pcap\n", 31 <unfinished ...>
[pid  5410] <... read resumed> "extra_incl=-I/usr/include/pcap\n", 4096)
= 31
[pid  5404] write(1, "with_libpcap_includes=no\n", 25 <unfinished ...>
[pid  5410] <... read resumed> "with_libpcap_includes=no\n", 4096) = 25
[pid  5404] write(1, "with_libpcap_libraries=no\n", 26 <unfinished ...>
[pid  5410] <... read resumed> "with_libpcap_libraries=no\n", 4096) = 26
[pid  5912] write(1, "LIBS=\'-lpcap -lm -lnsl \'\n", 25) = 25
[pid  5916] write(1, "LIBS=\'-lpcap -lm -lnsl \'\n", 25) = 25
[pid  5916] write(1, "ac_cv_lib_pcap_pcap_datalink=yes"..., 33) = 33
[pid  5916] write(1, "extra_incl=-I/usr/include/pcap\n", 31) = 31
[pid  5916] write(1, "with_libpcap_includes=no\n", 25) = 25
[pid  5916] write(1, "with_libpcap_libraries=no\n", 26) = 26
[pid  5912] write(1, "ac_cv_lib_pcap_pcap_datalink=yes"..., 33) = 33
[pid  5912] write(1, "extra_incl=-I/usr/include/pcap\n", 31) = 31
[pid  5912] write(1, "with_libpcap_includes=no\n", 25 <unfinished ...>
[pid  5918] <... read resumed> "with_libpcap_includes=no\n", 4096) = 25
[pid  5912] write(1, "with_libpcap_libraries=no\n", 26 <unfinished ...>
[pid  5918] <... read resumed> "with_libpcap_libraries=no\n", 4096) = 26

Regards,

Edin


> Regards,
>
> James

-- 
Edin Dizdarevic



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