Include files
Learn how a makefile is interpreted with strings.
If a line in a makefile starts with the string include
or
sinclude
followed by white space (at least one <SPACE> or
<TAB> character), the rest of the line is assumed to be a file name. (This name can
contain macros.) The contents of the file are placed at the current location in the
makefile.
For include
, a fatal error occurs if the file is not readable. For
sinclude
, a non-readable file is silently ignored.