Merge few bug-fixing branches into branch-1.13.2

* fix-part-pr13832:
  tests: avoid possible autotools caching issues (automake bug#13832)

* fix-pr13760:
  dry-run: don't get confused by '-I' option
  dry-run: with GNU make, prefer $(MFLAGS) over $(MAKEFLAGS)
  header vars: can determine whether we are running under GNU make

* fix-doc-pr14019:
  docs: issues with configure substitutions in TESTS

* news-wording-improve:
  NEWS: improve wording for automake bug#13514 fix

diff --git a/AUTHORS b/AUTHORS
index e63f8b7..a3c5c01 100644 (file)
--- a/AUTHORS
+++ b/AUTHORS
@@ -19,3 +19,9 @@ Alexandre Duret-Lutz
 Ralf Wildenhues
   Random breakage.
   Maintenance since 2006.
+
+Stefano Lattarini
+  Testsuite overhaul.
+  TAP support and custom testsuite drivers.
+  Random breakage.
+  De-facto maintenance since 2012.

diff --git a/NEWS b/NEWS
index 06c012f..6597626 100644 (file)
--- a/NEWS
+++ b/NEWS
@@ -127,23 +127,23 @@ New in 1.13.2:
     Automake 1.13, has turned out to be a similarly very bad idea,
     for exactly the same reason.
 
-  - Aclocal no longer error out if the first local m4 directory (as
-    specified by the '-I' option or the 'AC_CONFIG_MACRO_DIRS' or
-    'AC_CONFIG_MACRO_DIR' macros) doesn't exist; it merely report a
-    warning in the 'unsupported' category.  This is done to support
-    some pre-existing real-world usages; refer to automake bug#13514
-    for more details.
+  - aclocal will no longer error out if the first local m4 directory
+    (as specified by the '-I' option or the 'AC_CONFIG_MACRO_DIRS' or
+    'AC_CONFIG_MACRO_DIR' macros) doesn't exist; it will merely report
+    a warning in the 'unsupported' category.  This is done to support
+    some pre-existing real-world usages.  See automake bug#13514.
 
-  - Aclocal no longer consider directories for extra m4 files more than
-    once, even if they are specified multiple times.  This prevents
-    problems in older packages that specify both
+  - aclocal will no longer consider directories for extra m4 files more
+    than once, even if they are specified multiple times.  This ensures
+    packages that specify both
 
         AC_CONFIG_MACRO_DIR([m4])       in configure.ac
         ACLOCAL_AMFLAGS = -I m4         in Makefile.am
 
-    If the 'm4' directory did not exist when aclocal was called the first
-    time by autoreconf, an error would have ensued with Automake 1.13 and
-    1.13.1.  See automake bug#13514.
+    will work correctly, even when the 'm4' directory contains no
+    package-specific files, but is used only to install third-party
+    m4 files (as can happen with e.g., "libtoolize --install").
+    See automake bug#13514.
 
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 

diff --git a/doc/automake.texi b/doc/automake.texi
index e700ab9..e52cc3a 100644 (file)
--- a/doc/automake.texi
+++ b/doc/automake.texi
@@ -53,6 +53,8 @@ section entitled ``GNU Free Documentation License.''
 @author David MacKenzie
 @author Tom Tromey
 @author Alexandre Duret-Lutz
+@author Ralf Wildenhues
+@author Stefano Lattarini
 @page
 @vskip 0pt plus 1filll
 @insertcopying
@@ -9087,6 +9089,12 @@ followed by any number of alphabetic characters.
 For example, @samp{.sh}, @samp{.T} and @samp{.t1} are valid extensions,
 while @samp{.x-y}, @samp{.6c} and @samp{.t.1} are not.
 
+@cindex Configure substitutions in @code{TESTS}
+It is important to note that, due to current limitations (unlikely to be
+lifted), configure substitutions in the definition of @code{TESTS} can
+only work if they will expand to a list of tests that have a suffix listed
+in @code{TEST_EXTENSIONS}.
+
 @vindex _LOG_COMPILE
 @vindex _LOG_COMPILER
 @vindex _LOG_FLAGS

diff --git a/t/ar-lib4.sh b/t/ar-lib4.sh
index 68615e8..4d3c40a 100755 (executable)
--- a/t/ar-lib4.sh
+++ b/t/ar-lib4.sh
@@ -39,6 +39,8 @@ AUTOMAKE_fails
 
 grep 'requires.*AM_PROG_AR' stderr
 
+rm -rf autom4te*.cache
+
 cp X configure.ac
 
 cat >> configure.ac << 'END'

diff --git a/t/lisp-flags.sh b/t/lisp-flags.sh
index a31bcfd..1ea5b8e 100755 (executable)
--- a/t/lisp-flags.sh
+++ b/t/lisp-flags.sh
@@ -20,7 +20,7 @@
 
 # Don't get fooled when running as an Emacs subprocess.  This is
 # for the benefit of the "make -e" invocation below.
-unset EMACS
+EMACS=; unset EMACS
 
 cat > Makefile.am << 'EOF'
 lisp_LISP = foo.el