title: Oracle database installation issue in ins_ctx.mk
body: <pre><code>Error in invoking target 'install' of makefile '/u01/app/oracle/product/11.2.0/dbhome_1/ctx/lib/ins_ctx.mk'. See '/u01/app/oraInventory/logs/installActions2015-02-28_02-22-27AM.log' for details.
  </code></pre>
  
  <p>I get the above error when I run  the installer of Oracle 11g release 2</p>
  
  <p>The log is as follows</p>
  
  <pre><code>INFO: gcc -o ctxhx -m64 -L/u01/app/oracle/product/11.2.0/dbhome_1/ctx/lib/ -L/u01/app/oracle/product/11.2.0/dbhome_1/lib/ -L/u01/app/oracle/product/11.2.0/dbhome_1/lib/stubs/  /u01/app/oracle/product/11.2.0/dbhome_1/ctx/lib/ctxhx.o -L/u01/app/oracle/product/11.2.0/dbhome_1/ctx/lib/ -lm -ldl -lsc_ca -lsc_fa -lsc_ex -lsc_da -lsc_ut -lsc_ch -lsc_fi -lctxhx -lc -Wl,-rpath,/u01/app/oracle/product/11.2.0/dbhome_1/ctx/lib -lsnls11 -lnls11  -lcore11 -lsnls11 -lnls11 -lcore11 -lsnls11 -lnls11 -lxml11 -lcore11 -lunls11 -ls
  INFO: nls11 -lnls11 -lcore11 -lnls11
  
  INFO: /usr/bin/ld: /u01/app/oracle/product/11.2.0/dbhome_1/lib//libcore11.a(sslss.o): undefined reference to symbol 'pthread_sigmask@@GLIBC_2.2.5'
  //lib/x86_64-linux-gnu/libpthread.so.0: error adding symbols: DSO missing from command line
  
  INFO: collect2: error: ld returned 1 exit status
  
  INFO: make: *** [ctxhx] Error 1
  
  INFO: End output from spawned process.
  INFO: ----------------------------------
  INFO: Exception thrown from action: make
  Exception Name: MakefileException
  Exception String: Error in invoking target 'install' of makefile '/u01/app/oracle/product/11.2.0/dbhome_1/ctx/lib/ins_ctx.mk'. See '/u01/app/oraInventory/logs/installActions2015-02-28_02-22-27AM.log' for details.
  </code></pre>
  
  <p>Please help me fix this... Thanks in advance.</p>