1 1 12.18.1 Variables listed in `VPATH' 1 ----------------------------------- 1 1 Do not set `VPATH' to the value of another variable, for example `VPATH 1 = $(srcdir)', because some ancient versions of `make' do not do 1 variable substitutions on the value of `VPATH'. For example, use this 1 1 srcdir = @srcdir@ 1 VPATH = @srcdir@ 1 1 rather than `VPATH = $(srcdir)'. Note that with GNU Automake, there is 1 no need to set this yourself. 1