[Automake-commit] [SCM] GNU Automake branch, ng/master, updated. v1.13.2-1105-geaed46c

[Stefano Lattarini]

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- Log -----------------------------------------------------------------
commit eaed46c8d9fd18a517eee6ccd1dd56228fb5de7e
Merge: 324e4fb ef81e90
Author: Stefano Lattarini <address@hidden>
Date:   Tue May 28 21:55:33 2013 +0200

    Merge branch 'master' into ng/master
    
    * master:
      NEWS: fix typo
      NEWS: report recent documentation fix about AM_PROG_MKDIR_P
      NEWS: Automake 2.0 will assume "rm -f" without args work
      NEWS: on assuming "rm -f" without arguments work
      NEWS: fix a couple of typos in older entries
      docs: AM_PROG_MKDIR_P: will not be removed in 2.0 release of Automake
      docs: AM_PROG_CC_C_O: correct imprecise statements about it
      maint: sanity checks in 'check-minimal-autoconf' convenience target
      maint: test minimal supported autoconf through convenience target
      maint: install minimal supported autoconf through convenience targets
      test-lib: typofix in comments

-----------------------------------------------------------------------

Summary of changes:
 .gitignore           |    2 +
 NEWS                 |   46 ++++++++++++++++++++++++++++--
 configure.ac         |    2 +-
 doc/automake-ng.texi |   19 ++++--------
 maintainer/maint.mk  |   77 ++++++++++++++++++++++++++++++++++++++++++++++++--
 t/ax/am-test-lib.sh  |    2 +-
 6 files changed, 128 insertions(+), 20 deletions(-)

diff --git a/.gitignore b/.gitignore
index 21ec99f..8f4bb19 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,7 @@
 /lib/am-ng
 /announcement
+/maintainer/autoconf-*/
+/maintainer/autoconf-*.tar.gz
 /ChangeLog
 /aclocal.m4
 /configure
diff --git a/NEWS b/NEWS
index 6f88845..5172150 100644
--- a/NEWS
+++ b/NEWS
@@ -97,6 +97,17 @@ New in 2.0:
 
 * WARNING: Future backward-incompatibilities!
 
+  - Makefile recipes generated by Automake 2.0 will expect to use an
+    'rm' program that doesn't complain when called without any non-option
+    argument if the '-f' option is given (so that commands like "rm -f"
+    and "rm -rf" will act as a no-op, instead of raising usage errors).
+    Accordingly, AM_INIT_AUTOMAKE will expand new shell code checking
+    that the default 'rm' program in PATH satisfies this requirement, and
+    aborting the configure process if this is not the case.  This behavior
+    of 'rm' is very widespread in the wild, and it will be required in the
+    next POSIX version:
+    <http://austingroupbugs.net/view.php?id=542>
+
   - Automake 2.0 will require Autoconf 2.70 or later (which is still
     unreleased at the moment of writing, but is planned to be released
     before Automake 2.0 is).
@@ -234,11 +245,40 @@ New in 1.14:
     (in the 'obsolete' category), and the recipes for the Automake-generated
     targets 'dist-shar' and 'dist-tarZ' will unconditionally display
     (non-fatal) warnings at make runtime.
-    
+
+* New configure runtime warnings about "rm -f" support:
+
+  - To simplify transition to Automake 2.0, the shell code expanded by
+    AM_INIT_AUTOMAKE now checks (at configure runtime) that the default
+    'rm' program in PATH doesn't complain when called without any
+    non-option argument if the '-f' option is given (so that commands
+    like "rm -f" and "rm -rf" act as a no-op, instead of raising usage
+    error).  If this is not the case,
+    the configure script is aborted, to call the attention of the user
+    on the issue, and invite him to fix his PATH.  The checked 'rm'
+    behavior is very widespread in the wild, and will be required by
+    future POSIX version:
+
+        <http://austingroupbugs.net/view.php?id=542>
+
+    The user can still force the configure process to complete even in the
+    presence of a broken 'rm' by defining the ACCEPT_INFERIOR_RM_PROGRAM
+    environment variable to "yes".  And the generated Makefiles should
+    still work correctly even when such broken 'rm' is used.  But note
+    that this will no longer be the case with Automake 2.0 though, so, if
+    you encounter the warning, please report it to us ASAP (and try to fix
+    your environment as well).
+
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 New in 1.13.3:
 
+* Documentation fixes:
+
+  - The documentation no longer mistakenly report that the obsolete
+    'AM_MKDIR_PROG_P' macro and '$(mkdir_p)' make variable are going
+    to be removed in Automake 2.0.
+
 * Bugs fixed:
 
   - Byte-compilation of Emacs lisp files could fail spuriously on Solaris,
@@ -1777,8 +1817,8 @@ New in 1.9:
     tar-pax.  The new option filename-length-max=99 helps diagnosing
     filenames that are too long for tar-v7.  (PR/414)
 
-  - Variables aumented with `+=' are now automatically flattened (i.e.,
-    trailing backslashes removed) and then wrapped around 80 colummns
+  - Variables augmented with `+=' are now automatically flattened (i.e.,
+    trailing backslashes removed) and then wrapped around 80 columns
     (adding trailing backslashes).  In previous versions, a long series
     of
       VAR += value1
diff --git a/configure.ac b/configure.ac
index dc89ce1..097a19a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -113,7 +113,7 @@ AC_CHECK_PROGS([LEX], [lex flex], [false])
 # following tests, but some users were unable to figure out that their
 # installation was broken since --version appeared to work.
 
-required_autoconf_version=2.65
+AC_SUBST([required_autoconf_version], [2.65])
 AC_CACHE_CHECK([whether autoconf is installed], [am_cv_autoconf_installed],
 [if AM_RUN_LOG([$am_AUTOCONF --version]);
 then
diff --git a/doc/automake-ng.texi b/doc/automake-ng.texi
index 7b31803..079bdc5 100644
--- a/doc/automake-ng.texi
+++ b/doc/automake-ng.texi
@@ -3971,10 +3971,11 @@ choose the assembler for you (by default the C 
compiler) and set
 
 @item AM_PROG_CC_C_O
 @acindex AM_PROG_CC_C_O
address@hidden AC_PROG_CC_C_O
-This is an @emph{obsolete wrapper} around @code{AC_PROG_CC_C_O}.
-New code needs not use this macro.  It might be deprecated and
address@hidden in future Automake versions}.
+This is an obsolescent macro that checks that the C compiler supports
+the @option{-c} and @option{-o} options together.  Note that, since
+Automake 1.14, the @code{AC_PROG_CC} is rewritten to implement such
+checks itself, and thus the explicit use of @code{AM_PROG_CC_C_O}
+should no longer be required.
 
 @item AM_PROG_LEX
 @acindex AM_PROG_LEX
@@ -4041,13 +4042,6 @@ to avoid problems in the future.
 
 @table @code
 
address@hidden AM_PROG_CC_C_O
address@hidden AM_PROG_CC_C_O
address@hidden AC_PROG_CC_C_O
-This is an @emph{obsolete wrapper} around @code{AC_PROG_CC_C_O}.  New
-code needs not to use this macro.  It will be deprecated, and then
-removed, in future Automake versions.
-
 @item AM_PROG_MKDIR_P
 @acindex AM_PROG_MKDIR_P
 @cindex @code{mkdir -p}, macro check
@@ -4065,7 +4059,8 @@ the output variable @code{MKDIR_P} instead.  In case you 
are still
 using the @code{AM_PROG_MKDIR_P} macro in your @file{configure.ac},
 or its provided variable @code{$(mkdir_p)} in your @file{Makefile.am},
 you are advised to switch ASAP to the more modern Autoconf-provided
-interface instead.
+interface instead; both the macro and the variable might be removed
+in a future major Automake release.
 
 @end table
 
diff --git a/maintainer/maint.mk b/maintainer/maint.mk
index 5bd9d1b..da821b2 100644
--- a/maintainer/maint.mk
+++ b/maintainer/maint.mk
@@ -18,6 +18,9 @@
 # Avoid CDPATH issues.
 unexport CDPATH
 
+# Program to use to fetch files from the Net.
+WGET = wget
+
 # --------------------------------------------------------- #
 #  Automatic generation of the ChangeLog from git history.  #
 # --------------------------------------------------------- #
@@ -303,9 +306,6 @@ CLEANFILES += announcement
 #  Synchronize third-party files that are committed in our repository.  #
 # --------------------------------------------------------------------- #
 
-# Program to use to fetch files.
-WGET = wget
-
 # Git repositories on Savannah.
 git-sv-host = git.savannah.gnu.org
 
@@ -477,6 +477,77 @@ update-copyright:
          | grep -Ev "^($$excluded_re)$$" \
          | $(update_copyright_env) xargs $(srcdir)/lib/$@
 
+# -------------------------------------------------------------- #
+#  Run the testsuite with the least supported autoconf version.  #
+# -------------------------------------------------------------- #
+
+gnu-ftp = http://ftp.gnu.org/gnu
+
+# Various shorthands: version, name, package name, tarball name,
+# tarball location, installation directory.
+ac-v = $(required_autoconf_version)
+ac-n = autoconf
+ac-p = $(ac-n)-$(ac-v)
+ac-t = $(ac-p).tar.gz
+ac-l = maintainer/$(ac-t)
+ac-d = maintainer/$(ac-p)
+
+fetch-minimal-autoconf: o = $(ac-l)
+fetch-minimal-autoconf:
+       $(AM_V_at)$(MKDIR_P) $(dir $o)
+       $(AM_V_at)rm -f $o $o-t
+       $(AM_V_GEN)$(WGET) -O $o-t $(gnu-ftp)/$(ac-n)/$(ac-t)
+       $(AM_V_at)chmod a-w $o-t && mv -f $o-t $o && ls -l $o
+.PHONY: fetch-minimal-autoconf
+
+build-minimal-autoconf:
+       $(AM_V_GEN):; \
+       test -f $(ac-l) || { \
+         echo "$@: tarball $(ac-l) seems missing." >&2; \
+         echo "$@: have you run '$(MAKE) fetch-minimal-autoconf'?" >&2; \
+         exit 1; \
+       }; \
+         set -x \
+         && $(PERL) $(srcdir)/t/ax/deltree.pl $(ac-d) \
+         && $(MKDIR_P) $(ac-d) \
+         && cd $(ac-d) \
+         && tar xzf '$(CURDIR)/$(ac-l)' \
+         && mv $(ac-p) src \
+         && mkdir build \
+         && cd build \
+         && env CONFIG_SHELL='$(SHELL)' $(SHELL) ../src/configure \
+              --prefix='$(CURDIR)/$(ac-d)' CONFIG_SHELL='$(SHELL)' \
+         && $(MAKE) install
+       $(AM_V_at)echo ' ======' && $(ac-d)/bin/autoconf --version
+.PHONY: build-minimal-autoconf
+
+check-minimal-autoconf:
+       $(AM_V_at)p='$(ac-d)/bin/autoconf'; \
+         if test ! -f "$$p" || test ! -x "$$p"; then \
+           echo "$@: program '$$p' seems missing." >&2; \
+           echo "$@: have you run '$(MAKE) build-minimal-autoconf'?" >&2; \
+           exit 1; \
+         fi
+       $(AM_V_GEN): \
+         && PATH='$(CURDIR)/$(ac-d)/bin$(PATH_SEPARATOR)'$$PATH \
+         && export PATH \
+         && AUTOCONF=autoconf \
+         && AUTOHEADER=autoheader \
+         && AUTORECONF=autoreconf \
+         && AUTOM4TE=autom4te \
+         && AUTOUPDATE=autoupdate \
+         && export AUTOCONF AUTOHEADER AUTORECONF AUTOM4TE AUTOUPDATE \
+         && echo === check autoconf version '(must be = $(ac-v))' \
+         && autoconf --version \
+         && autoconf --version | sed -e 's/^/ /; s/$$/ /' -e 1q \
+              | $(FGREP) '$(ac-v)' >/dev/null \
+         && echo === configure \
+         && ./configure $(shell ./config.status --config) \
+         && echo === build and test \
+         && $(MAKE) check
+.PHONY: check-minimal-autoconf
+
+
 # --------------------------------------------------------------- #
 #  Testing on real-world packages can help us avoid regressions.  #
 # --------------------------------------------------------------- #
diff --git a/t/ax/am-test-lib.sh b/t/ax/am-test-lib.sh
index 00eabbf..5382f6c 100644
--- a/t/ax/am-test-lib.sh
+++ b/t/ax/am-test-lib.sh
@@ -49,7 +49,7 @@ unset DESTDIR
 unset prefix exec_prefix bindir datarootdir datadir docdir dvidir
 unset htmldir includedir infodir libdir libexecdir localedir mandir
 unset oldincludedir pdfdir psdir sbindir sharedstatedir sysconfdir
-# Unset variables that might influcence "make distcheck".
+# Unset variables that might influence "make distcheck".
 unset DISTCHECK_CONFIGURE_FLAGS AM_DISTCHECK_CONFIGURE_FLAGS
 # Used by install rules for info files.
 unset AM_UPDATE_INFO_DIR


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