docs: Document AC_FUNC_FORK cache variables.

* doc/autoconf.texi (Particular Functions): Document AC_FUNC_FORK
cache variables.
* THANKS: Update.

Signed-off-by: Ralf Wildenhues <Ralf.Wildenhues@gmx.de>

3 files changed, 13 insertions, 0 deletions

diff --git a/ChangeLog b/ChangeLog
index ba2750f7..30dfced5 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2011-03-08  Colin Watson  <cjwatson@debian.org>  (tiny change)
+	    Ralf Wildenhues  <Ralf.Wildenhues@gmx.de>
+
+	* doc/autoconf.texi (Particular Functions): Document AC_FUNC_FORK
+	cache variables.
+	* THANKS: Update.
+
 2011-03-08  Ralf Wildenhues  <Ralf.Wildenhues@gmx.de>
 
 	docs: BSD and Solaris make trailing space macro issue.
diff --git a/THANKS b/THANKS
index 648a5011..887405fa 100644
--- a/THANKS
+++ b/THANKS
@@ -83,6 +83,7 @@ Christian Rössel            christian.roessel@gmx.de
 Christopher Hulbert         cchgroupmail@gmail.com
 Christopher Lee             chrislee@ri.cmu.edu
 Clinton Roy                 clinton.roy@gmail.com
+Colin Watson                cjwatson@debian.org
 Corinna Vinschen            corinna-cygwin@cygwin.com
 Cort Dougan                 cort@cs.nmt.edu
 D'Arcy A MacIsaac           ?
diff --git a/doc/autoconf.texi b/doc/autoconf.texi
index 91839814..ea9e5605 100644
--- a/doc/autoconf.texi
+++ b/doc/autoconf.texi
@@ -5004,6 +5004,11 @@ yourself in new code:
 #endif
 @end group
 @end example
+
+The results of this macro are cached in the @code{ac_cv_func_fork_works}
+and @code{ac_cv_func_vfork_works} variables.  In order to override the
+test, you also need to set the @code{ac_cv_func_fork} and
+@code{ac_cv_func_vfork} variables.
 @end defmac
 
 @defmac AC_FUNC_FSEEKO