Q. I recently received an email from a previous colleague asking for help regarding errors in compiling XYmon client on a machine running Fedora 13. Yes, the host is a bit old but since the application running is mission critical downtime is not acceptable and putting it under the microscope with a xymon client is a well-thought move.
To give you a better picture of the error, here are a few lines of the xymon client compile, after running "make -s".
(other lines snipped for brevity) ... timefunc.c: In function âtimespec_textâ: timefunc.c:140: warning: pointer targets in assignment differ in signedness timefunc.c:187: warning: pointer targets in passing argument 2 of âaddtobufferâ differ in signedness /var/tmp/xymon-4.3.7/include/../lib/strfunc.h:16: note: expected âchar *â but argument is of type âunsigned char *â ../lib/xymonclient.a(timefunc-client.o): In function `getntimer': /var/tmp/xymon-4.3.7/lib/timefunc.c:67: undefined reference to `clock_gettime' ../lib/xymonclient.a(timefunc-client.o): In function `gettimer': /var/tmp/xymon-4.3.7/lib/timefunc.c:55: undefined reference to `clock_gettime' collect2: ld returned 1 exit statustfc make[1]: *** [../client/xymon] Error 1 make: *** [common-client] Error 2
So as you can see, the error is fatal and compilation will not complete successfully. I have been through this error before and made notes of the things done to resolve.
A. Xymon was built to take into account regular expressions on things being monitored -- log files, directory sizes, etc, etc. These files can be monitored by classes and/or pattern matches that can be defined by regular expressions. And for xymon to function properly, the pcre-devel (PERL Compatible Regular Expressions) rpm has to be installed.
So install pcre-devel via yum.
[root@host /var/tmp] yum -y install pcre-devel Loaded plugins: fastestmirror, presto, refresh-packagekit Loading mirror speeds from cached hostfile * fedora: mirror.cse.iitk.ac.in * updates: mirror.cse.iitk.ac.in Setting up Install Process Resolving Dependencies --> Running transaction check ---> Package pcre-devel.i686 0:7.8-3.fc12 set to be installed --> Finished Dependency Resolution Dependencies Resolved ================================================================================ Package Arch Version Repository Size ================================================================================ Installing: pcre-devel i686 7.8-3.fc12 fedora 278 k Transaction Summary ================================================================================ Install 1 Package(s) Total download size: 278 k Installed size: 0.9 M Downloading Packages: Setting up and reading Presto delta metadata Processing delta metadata Package(s) data still to download: 278 k (1/1): pcre-devel-7.8-3.fc12.i686.rpm | 278 kB 00:02 -------------------------------------------------------------------------------- Total 271 kB/s | 278 kB 00:02 Running rpm_check_debug Running Transaction Test Transaction Test Succeeded Running Transaction Installing : pcre-devel-7.8-3.fc12.i686 [###########################] 1/1 Installed: pcre-devel.i686 0:7.8-3.fc12 Complete!
Once pcre-devel is installed, xymon client will compile with a few warnings that can be ignored. Do a "make install" after compile completes. Run the xymon client via "/home/xymon/client/runclient.sh start". The path /home/xymon is the path chosen when running "./configure.client" (or "./configure -client").
This step is optional, but I found that it solves some issues with other versions of Fedora/RedHat based systems. Before running ./configure, define the environment variable LIBRTDEF. Do it with command "export LIBRTDEF=-lrt"
In running xymon client, pcre-devel is more often than not a major dependency. So better install it before doing the compile.
