The purpose of installing autoconf is to generate configure instructions, if required during installation./configure is simply to produce a make file,
The make file produces a lot of compilation that makes it known, compiles files into multiple files, and then packs together a file without a brain.
The role of make is to compile the file, just a tool, with which make can be found in the location, makes the role is to compile files into many small files.
The role of make install is to make a copy of the useful information in the make file to the executable file.
Then the problem comes, if there is a failure of the compilation, there is an error then no matter how many times the compilation will be error, and the same mistake, whether you delete the file should not exist
or delete the entire package, the same error occurs because there is already a compilation of the original error in the make file, and will be executed at the time of recompilation
Files that have been compiled in make file
It's time for make clean to play.
Once there is an error then be sure to perform a
Clean, the original compiled text
The correct installation of the deleted item
Make clean is created by make
Linux Ubuntu about make makefile do clean