[ming@localhost ming]$ cd numlockx-1.0
[ming@localhost numlockx-1.0]$ ./configure
loading cache ./config.cache
checking for a BSD compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
checking whether make sets ${MAKE}... yes
checking for working aclocal... missing
checking for working autoconf... missing
checking for working automake... missing
checking for working autoheader... missing
checking for working makeinfo... missing
checking for gcc... no
checking for cc... no
configure: error: no acceptable cc found in $PATH
[ming@localhost numlockx-1.0]$