When it is time to execute commands to update a target, they are executed
by making a new subshell for each line. (In practice, make may
take shortcuts that do not affect the results.)
Please note: this implies that shell commands such as cd
that set variables local to each process will not affect the following
command lines. (2) If you want to use cd
to affect the next command, put the two on a single line with a
semicolon between them. Then make will consider them a single
command and pass them, together, to a shell which will e
