Document AM_MAKEFLAGS workaround to the macro override problem.

* doc/autoconf.texi (Macros and Submakes): Automake makefiles
provide AM_MAKEFLAGS to help with overriding macros in submake
invocations.
Prompted by bug report from Bruno Haible.

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

diff --git a/ChangeLog b/ChangeLog
index 50f6fb72903b0e747c2431249f574f021f8f60db..4e58536ac3bff28f495e004fa5c567a826eed368 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,11 @@
+2009-09-18  Ralf Wildenhues  <Ralf.Wildenhues@gmx.de>
+
+       Document AM_MAKEFLAGS workaround to the macro override problem.
+       * doc/autoconf.texi (Macros and Submakes): Automake makefiles
+       provide AM_MAKEFLAGS to help with overriding macros in submake
+       invocations.
+       Prompted by bug report from Bruno Haible.
+
 2009-09-15  Peter Breitenlohner  <peb@mppmu.mpg.de>
 
        Implement and document Objective C++ support.

diff --git a/doc/autoconf.texi b/doc/autoconf.texi
index f09002465fb85b72e927fd383eb093b46ead2086..e5ecb6f98342e8a1b53b1a8a1e07c4012d2a072e 100644 (file)
--- a/doc/autoconf.texi
+++ b/doc/autoconf.texi
@@ -18172,6 +18172,10 @@ two:
 You need to foresee all macros that a user might want to override if
 you do that.
 
+Makefiles generated by @command{automake} expand @code{$(AM_MAKEFLAGS)}
+on the command line of submakes, which can be used for propagated overrides
+(@pxref{Subdirectories, , Automake, automake, @acronym{GNU} Automake}).
+
 @node The Make Macro MAKEFLAGS
 @section The Make Macro MAKEFLAGS
 @cindex @code{MAKEFLAGS} and @command{make}