Error compiling cactid on SuSE 9.1

[deimeke]

Hi,

I have problems compiling cactid-0.8.6d on SuSE 9.1.

The error mesage I get with ./configure is:
checking for CRYPTO_free in -lcrypto... no
configure: error: libcrypto not found!

But /usr/lib/libcrypto.so.0 and /usr/lib/libcrypto.so.0.9.7 do exist ...

Does anybody have a hint!

Thanks for your support.

Dirk

[TheWitness]

You either don't have the crypto libraries installed or they are installed in a directory that is not known to cactid's config script.

TheWitness

[deimeke]

Hi,

thanks for your reply.

As I said. The crypto-libraries are installed.

So I have to tell the config-script where they are.

How can I do this?

Thanks

Dirk

[TheWitness]

look at your configure.ac. You will look for the following lines:

Code: Select all

if test "$SNMP_SSL" = "yes"; then
  LDFLAGS="-L/usr/local/ssl/lib $LDFLAGS"
  AC_CHECK_LIB(crypto, CRYPTO_free,[],[AC_MSG_ERROR(libcrypto not found!)])
fi

Please let me know where your crypto lib's are installed so that I can modify the configure.ac file moving forward.

Thanks,

TheWitness

[deimeke]

Hello,

many thanks for your support.

The code snippet was the final hint.

I installed openssl-devel and ./configure walks through!

GNU make works an "my" cactid seems to gather data.

Thanks for your support.

Dirk

[TheWitness]

Did you have to change anything or just install the libraries?

TheWitness

[deimeke]

Hi,

I only installed the libraries.

poller.php runs two times faster.

Without cactid: 297 seconds in average
With cactid: 151 seconds in average

Which values are recommended for threads and processes?

Trying with 10 threads an 10 processes accelarates to 51 seconds poll time.

Dirk

[TheWitness]

Dirk,

How many processors? How many rra files? How many hosts? I typically run twice the number of processes as I have processors, with 15 threads each. It works pretty good for me. If you are very heavy in scripting, you might want to play with the concurrent processes a little.

Please keep in mind though that MySQL, by default, only supplies 100 concurrent connections. Therefore, if you have 5 processes at 15 threads each, you will consume up to 75 mysql connections.

TheWitness

[deimeke]

Hi,

many thanks for your help.

I put it to 2 processes with 15 threads. The execution time is the same as for 10 processes with 10 threads.

I am using 1 processor, 607 rra files.

Thanks again.

Dirk

[thebofh]

I've also run into this problem on suse pro 9.2. It seems that since the $SNMP_LIBDIR is empty (because suse comes bundled w/ net-snmp) it is causing the crypto test to fail (because it's the first test after adding $SNMP_LIBDIR to $LDFLAGS). As a result the compilation test ends up having an extra '-L' option.

Here's the error from the configure command (./configure --prefix=/path/cacti --with-mysql=/path/mysql)

Code: Select all

... snip ...
checking for mysql_init in -lmysqlclient... yes
checking for mysql_thread_init in -lmysqlclient... yes
checking if UCD-SNMP needs crypto support... no
checking if Net-SNMP needs crypto support... yes
checking for CRYPTO_free in -lcrypto... no
configure: error: libcrypto not found!

If you look at the config.log you see it's actaully -lmysqlclient that is failing (notice there is an empty -L option right before -L/path/mysql/lib).

Code: Select all

configure:5170: checking for CRYPTO_free in -lcrypto
configure:5200: gcc -o conftest -I/usr/include/net-snmp -I/usr/include/net-snmp/.. -I/path/mysql/include/mysql -g -O2  -L/usr/local/ssl/lib -L -L/path/mysql/lib  conftest.c -lcrypto  -lmysqlclient -lmysqlclient -lz -lpthread -lm -lnsl  >&5
/usr/lib64/gcc-lib/x86_64-suse-linux/3.3.4/../../../../x86_64-suse-linux/bin/ld: cannot find -lmysqlclient
collect2: ld returned 1 exit status
configure:5206: $? = 1

To fix this I just added a test for empty before setting $LDFLAGS with the $SNMP_LIBDIR.

Code: Select all

# diff cacti-cactid-0.8.6e/configure cactid-working/configure
5061c5061,5063
< LDFLAGS="-L$SNMP_LIBDIR $LDFLAGS"
---
> if test "$SNMP_LIBDIR" != ""; then
>   LDFLAGS="-L$SNMP_LIBDIR $LDFLAGS"
> fi

Maybe the configure script can be updated to prevent future problems for others?

[TheWitness]

E-mail me your updated configure.ac script.

Thanks,

TheWitness

[TheWitness]

I believe that I have fixed this in SVN. Can you please test.

Thanks,

TheWitness