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-rw-r--r--make.texinfo23
1 files changed, 21 insertions, 2 deletions
diff --git a/make.texinfo b/make.texinfo
index 997c670..298d713 100644
--- a/make.texinfo
+++ b/make.texinfo
@@ -6,7 +6,12 @@
$Header$
$Log$
-Revision 1.52 1988/05/30 21:39:16 mcgrath
+Revision 1.53 1988/06/03 00:07:30 mcgrath
+* Fixed a typo in the `Missing' section.
+* Added an example of how to replace the System V $$@ feature
+ using static pattern rules.
+
+Revision 1.52 88/05/30 21:39:16 mcgrath
Added `foreach' and `sort' functions.
Revision 1.51 88/05/26 17:55:55 mcgrath
@@ -4301,7 +4306,7 @@ Recursive variable references. @xref{Reference}.
The @code{make} programs in various other systems support a few features
that are not implemented in GNU @code{make}.
-suffix rule @samp{.c~.o} would make files @file{@var{n}.o} file from
+@itemize @bullet
@item
A target of the form @samp{@var{file}((@var{entry}))} stands for a member
of archive file @var{file}. The member is chosen, not by name, but by
@@ -4316,6 +4321,20 @@ Suffixes (used in suffix rules) that end with the character @samp{~}
have a special meaning; they refer to the SCCS file that corresponds
to the file one would get without the @samp{~}. For example, the
suffix rule @samp{.c~.o} would make the file @file{@var{n}.o} file from
+the SCCS file @file{s.@var{n}.c}. For complete coverage, a whole
+series of such suffix rules is required. @xref{Suffix Rules}.@refill
+rules. The System V @code{make} rule:
+In GNU @code{make}, this entire series of cases is handled by two
+pattern rules for extraction from SCCS, in combination with the
+$(targets): $$@.o lib.a
+
+@item
+In System V @code{make}, the string @samp{$$@@} has the strange meaning
+that, in the dependencies of a rule with multiple targets, it stands
+for the particular target that is being processed.
+
+This is not defined in GNU @code{make} because @samp{$$} should always
+stand for an ordinary @samp{$}.
@noindent
can be replaced with the GNU @code{make} static pattern rule: