Merge branch 'master' into ng/master

* master:
  cosmetics: remove trailing whitespace in some files
  coverage: enhance tests in 'missing' script a little
  coverage: tests AM_MISSING_PROG usage
  docs: document AM_MISSING_PROG
  tests: fix a spurious failure with Solaris make
  tests: simpler workaround for shells losing the exit status in exit trap
  tests: avoid several spurious failures on Solaris
  tests: avoid a spurious failure on NetBSD

+ Extra non-trivial edits:
* Several tests: Adjusted to use 'exit' rather than 'Exit'.

Signed-off-by: Stefano Lattarini <stefano.lattarini@gmail.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/doc/automake-ng.texi b/doc/automake-ng.texi
index 9626b1a77..b1cf9039f 100644
--- a/doc/automake-ng.texi
+++ b/doc/automake-ng.texi
@@ -4046,6 +4046,16 @@ variable.  The default @var{compiler-search-list} is @samp{upcc upc}.
 This macro will abort @command{configure} if no Unified Parallel C
 compiler is found.
 
+@item AM_MISSING_PROG(@var{name}, @var{program})
+@acindex AM_MISSING_PROG
+@vindex MISSING
+Find a maintainer tool @var{program} and define the @var{name}
+environment variable with its location.  If @var{program} is not
+detected, then @var{name} will instead invoke the @command{missing}
+script, in order to give useful advice to the user about the missing
+maintainer tool.  @xref{maintainer-mode}, for more information on when
+the @command{missing} script is appropriate.
+
 @item AM_SILENT_RULES
 @acindex AM_SILENT_RULES
 Control the machinery for less verbose build output