Installation on Centos 4.3

From Kolab wiki

Choose minimal install, yum update, then yum install gcc (needed for compiling kolab). After that, things should go well if you follow Kolab2 Installation - Source

Invalid option --hash-style=gnu

gcc 4.1.2 will yield an error message the from freshly compiled kolab linker ld trying to link the freshly compiled kolab gcc using option "--hash-style=gnu". This option is new and only supported by new gcc and binutils packages! With gcc 4.1.2 there is no "spec" file to customize this option.

workaround

This is a workaround to filter this option

1) Compile kolab and wait for the error. 2) Apply the following workaround

The trick is to replace ld by a python script that filter the unknown option and then start the original ld

mv /kolab/bin/ld /kolab/bin/ld.orig

cat > /kolab/bin/ld <<EOF
#!/usr/bin/python

import sys, os

args=[]

for arg in sys.argv:
   if arg!='--hash-style=gnu':
       args.append(arg)

os.execv('/kolab/bin/ld.orig', args)
EOF

chown kolab:kolab /kolab/bin/ld
chmod a+x /kolab/bin/ld

and last restart the build using "obmtool kolab"