CPAN.pm: Going to build N/NI/NI-S/Tk-804.027.tar.gz

RedHat perl in UTF-8 locale may not build Tk
/usr/bin/perl is installed in /usr/lib/perl5/5.8.5/i386-linux-thread-multi okay
PPM for perl5.008005
Test Compiling config/signedchar.c
Test Compiling config/Ksprintf.c
Test Compiling config/tod.c
Test Compiling -DTIMEOFDAY_TZ config/tod.c
TZ gettimeofday()
Using -L/usr/X11R6/lib to find /usr/X11R6/lib/libX11.so.6.2
Cannot find X include files via /usr/X11R6/include
Cannot find X include files anywhere at ./myConfig line 332.
Compilation failed in require at Makefile.PL line 36.
BEGIN failed--compilation aborted at Makefile.PL line 38.
Running make test
  Make had some problems, maybe interrupted? Won't test
Running make install
  Make had some problems, maybe interrupted? Won't install