perl Makefile.PL make make test make install perl Makefile.PL goes fine , however , when I do make , I get the following : cpp: installation problem, cannot exec `cc1': No such file or directory make[1]: *** [ClientWin.o] Error 1 make[1]: Leaving directory `/cygdrive/c/perl/Tk/pTk' make: *** [pTk/libpTk.a] Error 2