Re: [Sshguard-users] help needed building sshguard to use ip filter on solaris 8

[Mij <mi...@bi...>]

On 02/ott/07, at 21:48, Steve Ochani wrote:

> Hi,
>
> That worked but now I'm getting linker errors.
>
> gcc  -I. -O2   -o sshguard  sshguard.o sshguard_whitelist.o  
> sshguard_log.o
> sshguard_procauth.o simclist.o attack_parser.o attack_scanner.o  
> fwalls/libfwall.a -lpthread
> Undefined                       first referenced
>  symbol                             in file
> _Exit                               sshguard_procauth.o
> gethostbyname2                      attack_parser.o
> unsetenv                            fwalls/libfwall.a(command.o)
> gethostbyname                       sshguard_whitelist.o
> setenv                              fwalls/libfwall.a(command.o)
> hstrerror                           attack_parser.o
> inet_pton                           sshguard_whitelist.o
> inet_ntop                           attack_parser.o
> h_errno                             attack_parser.o
> ld: fatal: Symbol referencing errors. No output written to sshguard
> collect2: ld returned 1 exit status
> make[3]: *** [sshguard] Error 1
> make[3]: Leaving directory `/export/home/steve/ipf/ 
> sshguard-1.1beta3/sshguard-1.1beta3/src'
> make[2]: *** [all-recursive] Error 1
> make[2]: Leaving directory `/export/home/steve/ipf/ 
> sshguard-1.1beta3/sshguard-1.1beta3/src'
> make[1]: *** [all] Error 2
> make[1]: Leaving directory `/export/home/steve/ipf/ 
> sshguard-1.1beta3/sshguard-1.1beta3/src'
> make: *** [all-recursive] Error 1
>
>
> I went into src directory and tried: (added -lnsl -lresolv)
>
> gcc  -I. -O2   -o sshguard  sshguard.o sshguard_whitelist.o ssh
> uard_log.o sshguard_procauth.o simclist.o attack_parser.o  
> attack_scanner.o fwal
> s/libfwall.a -lpthread -lnsl -lresolv
>
> but still get some linker errors
>
> gcc  -I. -O2   -o sshguard  sshguard.o sshguard_whitelist.o ssh
> uard_log.o sshguard_procauth.o simclist.o attack_parser.o  
> attack_scanner.o fwal
> s/libfwall.a -lpthread -lnsl -lresolv
> Undefined                       first referenced
>  symbol                             in file
> _Exit                               sshguard_procauth.o
> gethostbyname2                      attack_parser.o
> unsetenv                            fwalls/libfwall.a(command.o)
> setenv                              fwalls/libfwall.a(command.o)
> ld: fatal: Symbol referencing errors. No output written to sshguard
> collect2: ld returned 1 exit status
>
>
> BTW I'm using gcc 3.4.2


I answered this same problem in the past for a guy who contacted me  
privately.
I will publish this in the FAQ if you confirm this fixes the problem,  
as soon as I have a moment.
Here is the answer:


the easiest is bypassing automake and compiling it manually.

Basically solaris doesn't include anything in default library search  
path so you
have to specify all manually. Moreover google tells me solaris has  
not setenv()
but only putenv(), so you have to make a minor edit to the source file.
(I will not move the main tree to this one has it has been marked  
deprecated by POSIX)

edit src/fwall/command.c, search for "setenv(COMMAND_ENVNAME_ADDR,  
addr, 1)".
Replace this with "putenv(COMMAND_ENVNAME_ADDR, addr)" (mind the  
missing 1!).
Do this for thrice the setenv() lines, then remove the "unsetenv"  
lines near below

Save and get back into the "src" directory (cd ..)
if you're using 1.3, edit sshguard_procauth.c and replace both _Exit 
() calls with _exit().


then try compiling: run

gcc  -I. -O2   -o sshguard  sshguard.o sshguard_whitelist.o  
sshguard_log.o sshguard_procauth.o simclist.o attack_parser.o  
attack_scanner.o fwalls/libfwall.a -lpthread -lsocket -lresolv -lnsl

if you get again problems with _exit(), try replacing with "exit 
()" (then you will possibly have
some segfaults when exiting, but they're harmless)