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authorRoland McGrath <roland@redhat.com>1988-07-04 13:41:43 +0000
committerRoland McGrath <roland@redhat.com>1988-07-04 13:41:43 +0000
commitbf811644073d6a5fcb990e6fc068340cc2c8a3e4 (patch)
tree67a003d5d23b712044b329d925cea5960d96a848
parent3206072ac3daaf856012aa3208e6d93f15c8953f (diff)
downloadgunmake-bf811644073d6a5fcb990e6fc068340cc2c8a3e4.tar.gz
Gave credit for VPATH to System V (where it was invented, but
is undocumented) as well as 4.3 BSD (where it was taken from System V and documented). Added the replacement of filenames found via VPATH search inside commands to `Missing' list. Maybe implement this soon?
-rw-r--r--make.texinfo19
1 files changed, 15 insertions, 4 deletions
diff --git a/make.texinfo b/make.texinfo
index b39fb0b..8b91b6d 100644
--- a/make.texinfo
+++ b/make.texinfo
@@ -4586,13 +4586,16 @@ Here is a summary of the features of GNU @code{make}, for comparison
with and credit to other versions of @code{make}. We consider the features
of @code{make} in BSD 4.2 systems as a baseline.
-The @code{VPATH} variable and its special meaning come from the @code{make}
-in BSD 4.3. @xref{Directory Search}.
-
Many features come from the version of @code{make} in System V:
@itemize @bullet
@item
+The @code{VPATH} variable and its special meaning. @xref{Directory
+Search}. This feature exists in System V @code{make}, but is undocumented.
+It is documented in 4.3 BSD @code{make} (which says it mimics System V's
+@code{VPATH} feature).@refill
+
+@item
Included makefiles. @xref{Include}.
@item
@@ -4724,7 +4727,7 @@ any characters. In other version of @code{make}, they must begin with
@item
The variable @code{MAKELEVEL} which keeps track of the current level
of @code{make} recursion. @xref{Recursion}.
-The @code{make} programs in various other systems support three features
+
@item
Static pattern rules. @xref{Static Pattern}.
@@ -4770,6 +4773,14 @@ for the particular target that is being processed.
This is not defined in GNU @code{make} because @samp{$$} should always
stand for an ordinary @samp{$}.
+
+It is possible to get this functionality through the use of static pattern
+rules (@pxref{Static Pattern}). The System V @code{make} rule:
+
+@example
+$(targets): $$@@.o lib.a
+@end example
+
@noindent
can be replaced with the GNU @code{make} static pattern rule: