I want to install Expect on AIX: I tried downloading individual packages and install expect, but i failed @ IO::Tty Then i tried with cpan: In both cases i am been ended with the following error..... How can i make it success?? i installed gcc even..... but still the problem continued... cpan> install IO::Tty Running install for module IO::Tty Running make for R/RG/RGIERSIG/IO-Tty-1.07.tar.gz CPAN: Digest::MD5 loaded ok Checksum for /.cpan/sources/authors/id/R/RG/RGIERSIG/IO-Tty-1.07.tar.gz ok Scanning cache /.cpan/build for sizes x IO-Tty-1.07 x IO-Tty-1.07/ChangeLog, 7019 bytes, 14 tape blocks x IO-Tty-1.07/Makefile.PL, 12044 bytes, 24 tape blocks x IO-Tty-1.07/MANIFEST, 150 bytes, 1 tape blocks x IO-Tty-1.07/META.yml, 283 bytes, 1 tape blocks x IO-Tty-1.07/Pty.pm, 8528 bytes, 17 tape blocks x IO-Tty-1.07/README, 1660 bytes, 4 tape blocks x IO-Tty-1.07/test.pl, 6587 bytes, 13 tape blocks x IO-Tty-1.07/try, 2880 bytes, 6 tape blocks x IO-Tty-1.07/Tty.pm, 7524 bytes, 15 tape blocks x IO-Tty-1.07/Tty.xs, 21388 bytes, 42 tape blocks Removing previously used /.cpan/build/IO-Tty-1.07 CPAN.pm: Going to build R/RG/RGIERSIG/IO-Tty-1.07.tar.gz Now let's see what we can find out about your system (logfiles of failing tests are available in the conf/ dir)... ERROR: cannot run the configured compiler 'cc_r' (see conf/compilerok.log). Suggestions: 1) The complier 'cc_r' is not in your PATH. Add it to the PATH and try again. OR 2) The compiler isn't installed on your system. Install it. OR 3) You only have a different compiler installed (e.g. 'gcc'). Either fix the compiler config in the perl Config.pm or install a perl that was built with the right compiler (you could build perl yourself with the available compiler). Note: this is a system-administration issue, please ask your local admin for help. Thank you. Running make test Make had some problems, maybe interrupted? Won't test Running make install Make had some problems, maybe interrupted? Won't install cpan>