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authorPaul Smith <psmith@gnu.org>2002-09-10 07:27:28 +0000
committerPaul Smith <psmith@gnu.org>2002-09-10 07:27:28 +0000
commit7ea029a07c02b9401cb3d88566eac41959b84c11 (patch)
tree0a26e865bee26f79c718258415b5389023076942 /doc
parent9b41488ad15e4ffc63b8094379c17f567b094c1b (diff)
downloadgunmake-7ea029a07c02b9401cb3d88566eac41959b84c11.tar.gz
Add support for broken SA_RESTART on PTX.
Fix bug #103: allow ifdef, export, and unexport to expand their arguments.
Diffstat (limited to 'doc')
-rw-r--r--doc/make.texi8
1 files changed, 7 insertions, 1 deletions
diff --git a/doc/make.texi b/doc/make.texi
index 4ef1107..2389ca0 100644
--- a/doc/make.texi
+++ b/doc/make.texi
@@ -3747,6 +3747,10 @@ unexport @var{variable} @dots{}
@end example
@noindent
+In both of these forms, the arguments to @code{export} and
+@code{unexport} are expanded, and so could be variables or functions
+which expand to a (list of) variable names to be (un)exported.
+
As a convenience, you can define a variable and export it at the same
time by doing:
@@ -5434,7 +5438,9 @@ effective; otherwise, the @var{text-if-false}, if any, is effective.
If the variable @var{variable-name} has a non-empty value, the
@var{text-if-true} is effective; otherwise, the @var{text-if-false},
if any, is effective. Variables that have never been defined have an
-empty value.
+empty value. The variable @var{variable-name} is itself expanded, so
+it could be a variable or function that expands to the name of a
+variable.
Note that @code{ifdef} only tests whether a variable has a value. It
does not expand the variable to see if that value is nonempty.