Look at platform-specific-issues, the issues page on github and the ruby-oci8 help forum on rubyforge to check whether your issue is fixed or not.

If it is a new one, post the following information to github or rubyforge.

• Messages printed out to the console

• gem_make.out if you install a gem

• Last 100 lines of 'ext/oci8/mkmf.log'

  Get them as follows.

   tail -100 ext/oci8/mkmf.log
  

• The results of the following commands:

   file `which ruby`
   ruby --version
   ruby -r rbconfig -e "p Config::CONFIG['host']"
   ruby -r rbconfig -e "p Config::CONFIG['CC']"
   ruby -r rbconfig -e "p Config::CONFIG['CFLAGS']"
   ruby -r rbconfig -e "p Config::CONFIG['LDSHARED']"
   ruby -r rbconfig -e "p Config::CONFIG['LDFLAGS']"
   ruby -r rbconfig -e "p Config::CONFIG['DLDLAGS']"
   ruby -r rbconfig -e "p Config::CONFIG['LIBS']"
   ruby -r rbconfig -e "p Config::CONFIG['GNU_LD']"
  
   # if you use gcc,
   gcc --print-prog-name=ld
   gcc --print-prog-name=as
  
   # Oracle full client
   file $ORACLE_HOME/bin/oracle
  
   # Oracle Instant client. You need to change INSTANT_CLIENT_DIRECTORY.
   file INSTANT_CLIENT_DIRECTORY/libclntsh.*
  
   echo $LD_LIBRARY_PATH
   echo $LIBPATH              # AIX
   echo $SHLIB_PATH           # HP-UX PA-RISC 32-bit ruby
   echo $DYLD_LIBRARY_PATH    # Mac OS X
   echo $LD_LIBRARY_PATH_32   # Solaris 32-bit ruby
   echo $LD_LIBRARY_PATH_64   # Solaris 64-bit ruby