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-rw-r--r--doc/make.texi26
1 files changed, 21 insertions, 5 deletions
diff --git a/doc/make.texi b/doc/make.texi
index 3c01e0a..1f491ad 100644
--- a/doc/make.texi
+++ b/doc/make.texi
@@ -3627,13 +3627,17 @@ also find it useful to declare targets that invoke recursive
@code{make} commands as @samp{.PHONY} (for more discussion on when
this is useful, see @ref{Phony Targets}).
-For your convenience, GNU @code{make} sets the variable @code{CURDIR} to
-the pathname of the current working directory for you. If @code{-C} is
-in effect, it will contain the path of the new directory, not the
-original. The value has the same precedence it would have if it were
+@vindex @code{CURDIR}
+For your convenience, when GNU @code{make} starts (after it has
+processed any @code{-C} options) it sets the variable @code{CURDIR} to
+the pathname of the current working directory. This value is never
+touched by @code{make} again: in particular note that if you include
+files from other directories the value of @code{CURDIR} does not
+change. The value has the same precedence it would have if it were
set in the makefile (by default, an environment variable @code{CURDIR}
will not override this value). Note that setting this variable has no
-effect on the operation of @code{make}
+impact on the operation of @code{make} (it does not cause @code{make}
+to change its working directory, for example).
@menu
* MAKE Variable:: The special effects of using @samp{$(MAKE)}.
@@ -9726,6 +9730,18 @@ and concatenate the results.@*
Evaluate the variable @var{var} replacing any references to @code{$(1)},
@code{$(2)} with the first, second, etc. @var{param} values.@*
@xref{Call Function, ,The @code{call} Function}.
+
+@item $(eval @var{text})
+
+Evaluate @var{text} then read the results as makefile commands.
+Expands to the empty string.@*
+@xref{Eval Function, ,The @code{eval} Function}.
+
+@item $(value @var{var})
+
+Evaluates to the contents of the variable @var{var}, with no expansion
+performed on it.@*
+@xref{Value Function, ,The @code{value} Function}.
@end table
Here is a summary of the automatic variables.