spaces between them. If the target does not exist, all prerequisites
will be included. For prerequisites which are archive members, only the
named member is used (@pxref{Archives}).
+
+@samp{$?} is useful even in explicit rules when you wish to operate on only
+the prerequisites that have changed. For example, suppose that an archive
+named @file{lib} is supposed to contain copies of several object files.
+This rule copies just the changed object files into the archive:
+
+@example
+@group
+lib: foo.o bar.o lose.o win.o
+ ar r lib $?
+@end group
+@end example
@cindex prerequisites, list of changed
@cindex list of changed prerequisites
suffix, @samp{$*} is set to the empty string for that rule.
@end table
-@samp{$?} is useful even in explicit rules when you wish to operate on only
-the prerequisites that have changed. For example, suppose that an archive
-named @file{lib} is supposed to contain copies of several object files.
-This rule copies just the changed object files into the archive:
-
-@example
-@group
-lib: foo.o bar.o lose.o win.o
- ar r lib $?
-@end group
-@end example
-
Of the variables listed above, four have values that are single file
names, and three have values that are lists of file names. These
seven have variants that get just the file's directory name or just