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[Automake-commit] [SCM] GNU Automake branch, master, updated. v1.12-80-g


From: Stefano Lattarini
Subject: [Automake-commit] [SCM] GNU Automake branch, master, updated. v1.12-80-g1e85264
Date: Fri, 04 May 2012 15:51:07 +0000

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generated because a ref change was pushed to the repository containing
the project "GNU Automake".

http://git.sv.gnu.org/gitweb/?p=automake.git;a=commitdiff;h=1e8526488f16c127e89ccd8be0df1bd33076c351

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- Log -----------------------------------------------------------------
commit 1e8526488f16c127e89ccd8be0df1bd33076c351
Merge: a124188 33f4f7d
Author: Stefano Lattarini <address@hidden>
Date:   Fri May 4 17:46:51 2012 +0200

    Merge branch 'maint'
    
    * maint:
      tests: avoid spurious failure on missing Obj C/C++ compiler
      objc, objc++: test support for compilation flags
      objc, objc++: add stress test
      objc, objc++: test automatic dependency tracking
      objc: reorganize basic tests
      objc++, objc: add first semantic tests
      objc++: add first basic test
      news: announce initial support for Objective C++
      objc++: test support for '.mm' suffix in _SOURCES entries
      objc++: add documentation
      objc++: initial support for Objective C++

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

Summary of changes:
 NEWS                          |    5 +
 automake.in                   |   29 ++++-
 doc/automake.texi             |   57 +++++++-
 lib/Automake/Variable.pm      |    2 +
 m4/depend.m4                  |    5 +-
 m4/init.m4                    |    9 +-
 t/ext.sh                      |   10 +-
 t/list-of-tests.mk            |   11 +-
 t/nodep2.sh                   |    8 +-
 t/{objc2.sh => objc-basic.sh} |   27 ++--
 t/{check7.sh => objc-deps.sh} |   60 ++++----
 t/objc-flags.sh               |   62 ++++++++
 t/objc-megademo.sh            |  347 +++++++++++++++++++++++++++++++++++++++++
 t/objc-minidemo.sh            |   76 +++++++++
 t/objc.sh                     |   36 -----
 t/objcxx-basic.sh             |   49 ++++++
 t/objcxx-deps.sh              |   81 ++++++++++
 t/objcxx-flags.sh             |   72 +++++++++
 t/objcxx-minidemo.sh          |   77 +++++++++
 19 files changed, 936 insertions(+), 87 deletions(-)
 rename t/{objc2.sh => objc-basic.sh} (58%)
 copy t/{check7.sh => objc-deps.sh} (50%)
 create mode 100755 t/objc-flags.sh
 create mode 100755 t/objc-megademo.sh
 create mode 100755 t/objc-minidemo.sh
 delete mode 100755 t/objc.sh
 create mode 100755 t/objcxx-basic.sh
 create mode 100755 t/objcxx-deps.sh
 create mode 100755 t/objcxx-flags.sh
 create mode 100755 t/objcxx-minidemo.sh

diff --git a/NEWS b/NEWS
index 8e2ee31..2bbf126 100644
--- a/NEWS
+++ b/NEWS
@@ -72,6 +72,11 @@ New in 1.12.1:
     search path are looked up is probably going to be changed in the
     next Automake release (1.13).
 
+* New supported languages:
+
+  - Support for Objective C++ has been added; it should work similarly to
+    the support for Objective C.
+
 * Deprecated obsolescent features:
 
   - Support for the "Cygnus-style" trees (enabled by the 'cygnus' option) is
diff --git a/automake.in b/automake.in
index 72ca956..9c632e2 100644
--- a/automake.in
+++ b/automake.in
@@ -759,6 +759,24 @@ register_language ('name' => 'objc',
                   'pure' => 1,
                   'extensions' => ['.m']);
 
+# Objective C++.
+register_language ('name' => 'objcxx',
+                  'Name' => 'Objective C++',
+                  'config_vars' => ['OBJCXX'],
+                  'linker' => 'OBJCXXLINK',
+                  'link' => '$(OBJCXXLD) $(AM_OBJCXXFLAGS) $(OBJCXXFLAGS) 
$(AM_LDFLAGS) $(LDFLAGS) -o $@',
+                  'autodep' => 'OBJCXX',
+                  'flags' => ['OBJCXXFLAGS', 'CPPFLAGS'],
+                  'compile' => '$(OBJCXX) $(DEFS) $(DEFAULT_INCLUDES) 
$(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_OBJCXXFLAGS) $(OBJCXXFLAGS)',
+                  'ccer' => 'OBJCXX',
+                  'compiler' => 'OBJCXXCOMPILE',
+                  'compile_flag' => '-c',
+                  'output_flag' => '-o',
+                  'lder' => 'OBJCXXLD',
+                  'ld' => '$(OBJCXX)',
+                  'pure' => 1,
+                  'extensions' => ['.mm']);
+
 # Unified Parallel C.
 register_language ('name' => 'upc',
                   'Name' => 'Unified Parallel C',
@@ -5725,6 +5743,12 @@ sub lang_objc_rewrite
     return &lang_sub_obj;
 }
 
+# Rewrite a single Objective C++ file.
+sub lang_objcxx_rewrite
+{
+    return &lang_sub_obj;
+}
+
 # Rewrite a single Unified Parallel C file.
 sub lang_upc_rewrite
 {
@@ -5989,7 +6013,7 @@ sub resolve_linker
 {
     my (%linkers) = @_;
 
-    foreach my $l (qw(GCJLINK CXXLINK F77LINK FCLINK OBJCLINK UPCLINK))
+    foreach my $l (qw(GCJLINK OBJCXXLINK CXXLINK F77LINK FCLINK OBJCLINK 
UPCLINK))
     {
        return $l if defined $linkers{$l};
     }
@@ -6177,13 +6201,14 @@ sub make_conditional_string ($$)
 my %_am_macro_for_cond =
   (
   AMDEP => "one of the compiler tests\n"
-          . "    AC_PROG_CC, AC_PROG_CXX, AC_PROG_CXX, AC_PROG_OBJC,\n"
+          . "    AC_PROG_CC, AC_PROG_CXX, AC_PROG_OBJC, AC_PROG_OBJCXX,\n"
           . "    AM_PROG_AS, AM_PROG_GCJ, AM_PROG_UPC",
   am__fastdepCC => 'AC_PROG_CC',
   am__fastdepCCAS => 'AM_PROG_AS',
   am__fastdepCXX => 'AC_PROG_CXX',
   am__fastdepGCJ => 'AM_PROG_GCJ',
   am__fastdepOBJC => 'AC_PROG_OBJC',
+  am__fastdepOBJCXX => 'AC_PROG_OBJCXX',
   am__fastdepUPC => 'AM_PROG_UPC'
   );
 
diff --git a/doc/automake.texi b/doc/automake.texi
index 59c039d..e655b4e 100644
--- a/doc/automake.texi
+++ b/doc/automake.texi
@@ -218,6 +218,7 @@ Building Programs and Libraries
 * Yacc and Lex::                Yacc and Lex support
 * C++ Support::                 Compiling C++ sources
 * Objective C Support::         Compiling Objective C sources
+* Objective C++ Support::       Compiling Objective C++ sources
 * Unified Parallel C Support::  Compiling Unified Parallel C sources
 * Assembly Support::            Compiling assembly sources
 * Fortran 77 Support::          Compiling Fortran 77 sources
@@ -3008,6 +3009,10 @@ Programs, , Particular Program Checks, autoconf, The 
Autoconf Manual}.
 This is required if any Objective C source is included.  @xref{Particular
 Programs, , Particular Program Checks, autoconf, The Autoconf Manual}.
 
address@hidden AC_PROG_OBJCXX
+This is required if any Objective C++ source is included.  @xref{Particular
+Programs, , Particular Program Checks, autoconf, The Autoconf Manual}.
+
 @item AC_PROG_F77
 This is required if any Fortran 77 source is included.  @xref{Particular
 Programs, , Particular Program Checks, autoconf, The Autoconf Manual}.
@@ -4590,6 +4595,7 @@ to build programs and libraries.
 * Yacc and Lex::                Yacc and Lex support
 * C++ Support::                 Compiling C++ sources
 * Objective C Support::         Compiling Objective C sources
+* Objective C++ Support::       Compiling Objective C++ sources
 * Unified Parallel C Support::  Compiling Unified Parallel C sources
 * Assembly Support::            Compiling assembly sources
 * Fortran 77 Support::          Compiling Fortran 77 sources
@@ -5706,6 +5712,7 @@ they apply.
 @itemx maude_GCJFLAGS
 @itemx maude_LFLAGS
 @itemx maude_OBJCFLAGS
address@hidden maude_OBJCXXFLAGS
 @itemx maude_RFLAGS
 @itemx maude_UPCFLAGS
 @itemx maude_YFLAGS
@@ -5723,6 +5730,7 @@ Automake.  These @dfn{per-target compilation flags} are
 @samp{_GCJFLAGS},
 @samp{_LFLAGS},
 @samp{_OBJCFLAGS},
address@hidden,
 @samp{_RFLAGS},
 @samp{_UPCFLAGS}, and
 @samp{_YFLAGS}.
@@ -6299,6 +6307,41 @@ The command used to actually link an Objective C program.
 @end vtable
 
 
address@hidden Objective C++ Support
address@hidden Objective C++ Support
+
address@hidden Objective C++ support
address@hidden Support for Objective C++
+
+Automake includes some support for Objective C++.
+
+Any package including Objective C++ code must define the output variable
address@hidden in @file{configure.ac}; the simplest way to do this is to use
+the @code{AC_PROG_OBJCXX} macro (@pxref{Particular Programs, , Particular
+Program Checks, autoconf, The Autoconf Manual}).
+
+A few additional variables are defined when an Objective C++ source file
+is seen:
+
address@hidden @code
address@hidden OBJCXX
+The name of the Objective C++ compiler.
+
address@hidden OBJCXXFLAGS
+Any flags to pass to the Objective C++ compiler.
+
address@hidden AM_OBJCXXFLAGS
+The maintainer's variant of @code{OBJCXXFLAGS}.
+
address@hidden OBJCXXCOMPILE
+The command used to actually compile an Objective C++ source file.  The
+file name is appended to form the complete command line.
+
address@hidden OBJCXXLINK
+The command used to actually link an Objective C++ program.
address@hidden vtable
+
+
 @node Unified Parallel C Support
 @section Unified Parallel C Support
 
@@ -6564,6 +6607,9 @@ parentheses are the variables containing the link 
command.)
 @vindex GCJLINK
 Native Java (@code{GCJLINK})
 @item
address@hidden OBJCXXLINK
+Objective C++ (@code{OBJCXXLINK})
address@hidden
 @vindex CXXLINK
 C++ (@code{CXXLINK})
 @item
@@ -6773,7 +6819,9 @@ source file.
 @section Support for Other Languages
 
 Automake currently only includes full support for C, C++ (@pxref{C++
-Support}), Objective C (@pxref{Objective C Support}), Fortran 77
+Support}), Objective C (@pxref{Objective C Support}),
+Objective C++ (@pxref{Objective C++ Support}),
+Fortran 77
 (@pxref{Fortran 77 Support}), Fortran 9x (@pxref{Fortran 9x Support}),
 and Java (@pxref{Java Support with gcj}).  There is only rudimentary
 support for other languages, support for which will be improved based
@@ -12013,6 +12061,7 @@ flags, not appended.
 @cindex @code{AM_LFLAGS} and @code{LFLAGS}
 @cindex @code{AM_LIBTOOLFLAGS} and @code{LIBTOOLFLAGS}
 @cindex @code{AM_OBJCFLAGS} and @code{OBJCFLAGS}
address@hidden @code{AM_OBJCXXFLAGS} and @code{OBJXXCFLAGS}
 @cindex @code{AM_RFLAGS} and @code{RFLAGS}
 @cindex @code{AM_UPCFLAGS} and @code{UPCFLAGS}
 @cindex @code{AM_YFLAGS} and @code{YFLAGS}
@@ -12027,6 +12076,7 @@ flags, not appended.
 @cindex @code{LFLAGS} and @code{AM_LFLAGS}
 @cindex @code{LIBTOOLFLAGS} and @code{AM_LIBTOOLFLAGS}
 @cindex @code{OBJCFLAGS} and @code{AM_OBJCFLAGS}
address@hidden @code{OBJCXXFLAGS} and @code{AM_OBJCXXFLAGS}
 @cindex @code{RFLAGS} and @code{AM_RFLAGS}
 @cindex @code{UPCFLAGS} and @code{AM_UPCFLAGS}
 @cindex @code{YFLAGS} and @code{AM_YFLAGS}
@@ -12036,8 +12086,8 @@ mostly discuss @code{CPPFLAGS} in our examples, but 
actually the
 answer holds for all the compile flags used in Automake:
 @code{CCASFLAGS}, @code{CFLAGS}, @code{CPPFLAGS}, @code{CXXFLAGS},
 @code{FCFLAGS}, @code{FFLAGS}, @code{GCJFLAGS}, @code{LDFLAGS},
address@hidden, @code{LIBTOOLFLAGS}, @code{OBJCFLAGS}, @code{RFLAGS},
address@hidden, and @code{YFLAGS}.
address@hidden, @code{LIBTOOLFLAGS}, @code{OBJCFLAGS}, @code{OBJCXXFLAGS},
address@hidden, @code{UPCFLAGS}, and @code{YFLAGS}.
 
 @code{CPPFLAGS}, @code{AM_CPPFLAGS}, and @code{mumble_CPPFLAGS} are
 three variables that can be used to pass flags to the C preprocessor
@@ -12943,6 +12993,7 @@ suite failures, please attach the 
@file{tests/test-suite.log} file.
 @c  LocalWords:  subsubsection OBJEXT esac lib LTLIBRARIES liblob LIBADD AR ar
 @c  LocalWords:  ARFLAGS cru ing maude libgettext lo LTLIBOBJS rpath SGI PRE yy
 @c  LocalWords:  libmaude CCLD CXXFLAGS FFLAGS LFLAGS OBJCFLAGS RFLAGS DEFS cc
address@hidden  LocalWords:  OBJCXXFLAGS
 @c  LocalWords:  SHORTNAME vtable srcdir nostdinc basename yxx cxx ll lxx gdb
 @c  LocalWords:  lexers yymaxdepth maxdepth yyparse yylex yyerror yylval lval
 @c  LocalWords:  yychar yydebug yypact yyr yydef def yychk chk yypgo pgo yyact
diff --git a/lib/Automake/Variable.pm b/lib/Automake/Variable.pm
index 4d346f0..d4d230f 100644
--- a/lib/Automake/Variable.pm
+++ b/lib/Automake/Variable.pm
@@ -185,6 +185,8 @@ my %_ac_macro_for_var =
    FCFLAGS => 'AC_PROG_FC',
    OBJC => 'AC_PROG_OBJC',
    OBJCFLAGS => 'AC_PROG_OBJC',
+   OBJCXX => 'AC_PROG_OBJCXX',
+   OBJCXXFLAGS => 'AC_PROG_OBJCXX',
    RANLIB => 'AC_PROG_RANLIB',
    UPC => 'AM_PROG_UPC',
    UPCFLAGS => 'AM_PROG_UPC',
diff --git a/m4/depend.m4 b/m4/depend.m4
index 8d7adf6..cee3199 100644
--- a/m4/depend.m4
+++ b/m4/depend.m4
@@ -5,7 +5,7 @@
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
 
-# serial 16
+# serial 17
 
 # There are a few dirty hacks below to avoid letting 'AC_PROG_CC' be
 # written in clear, in which case automake, when reading aclocal.m4,
@@ -17,7 +17,7 @@
 # _AM_DEPENDENCIES(NAME)
 # ----------------------
 # See how the compiler implements dependency checking.
-# NAME is "CC", "CXX", "GCJ", or "OBJC".
+# NAME is "CC", "CXX", "OBJC", "OBJCXX", "UPC", or "GJC".
 # We try a few techniques and use that to set a single cache variable.
 #
 # We don't AC_REQUIRE the corresponding AC_PROG_CC since the latter was
@@ -33,6 +33,7 @@ AC_REQUIRE([AM_DEP_TRACK])dnl
 m4_if([$1], [CC],   [depcc="$CC"   am_compiler_list=],
       [$1], [CXX],  [depcc="$CXX"  am_compiler_list=],
       [$1], [OBJC], [depcc="$OBJC" am_compiler_list='gcc3 gcc'],
+      [$1], [OBJCXX], [depcc="$OBJCXX" am_compiler_list='gcc3 gcc'],
       [$1], [UPC],  [depcc="$UPC"  am_compiler_list=],
       [$1], [GCJ],  [depcc="$GCJ"  am_compiler_list='gcc3 gcc'],
                     [depcc="$$1"   am_compiler_list=])
diff --git a/m4/init.m4 b/m4/init.m4
index 9731527..9db4eea 100644
--- a/m4/init.m4
+++ b/m4/init.m4
@@ -6,7 +6,7 @@
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
 
-# serial 18
+# serial 19
 
 # This macro actually does too much.  Some checks are only needed if
 # your package does certain things.  But this isn't really a big deal.
@@ -100,6 +100,13 @@ AC_PROVIDE_IFELSE([AC_PROG_OBJC],
                  [_AM_DEPENDENCIES([OBJC])],
                  [define([AC_PROG_OBJC],
                          defn([AC_PROG_OBJC])[_AM_DEPENDENCIES([OBJC])])])dnl
+dnl Support for Objective C++ was only introduced in Autoconf 2.65,
+dnl but we still cater to Autoconf 2.62.
+m4_ifdef([AC_PROG_OBJCXX],
+[AC_PROVIDE_IFELSE([AC_PROG_OBJCXX],
+                 [_AM_DEPENDENCIES([OBJCXX])],
+                 [define([AC_PROG_OBJCXX],
+                         
defn([AC_PROG_OBJCXX])[_AM_DEPENDENCIES([OBJCXX])])])])dnl
 ])
 AC_REQUIRE([AM_SILENT_RULES])dnl
 dnl The 'parallel-tests' driver may need to know about EXEEXT, so add the
diff --git a/t/ext.sh b/t/ext.sh
index dd92e85..c62dbd3 100755
--- a/t/ext.sh
+++ b/t/ext.sh
@@ -22,18 +22,24 @@ cat >> configure.ac << 'END'
 AC_PROG_F77
 AC_PROG_FC
 AC_PROG_OBJC
+# FIXME: this is to cater to older autoconf; remove this once we
+# FIXME: automake requires Autoconf 2.65 or later.
+m4_ifdef([AC_PROG_OBJCXX], [AC_PROG_OBJCXX], [
+  AC_SUBST([OBJCXX], [whocares])
+  AM_CONDITIONAL([am__fastdepOBJCXX], [whocares])
+])
 AM_PROG_UPC
 END
 
 cat > Makefile.am << 'END'
 bin_PROGRAMS = foo
-foo_SOURCES = 1.f 2.for 3.f90 4.f95 5.F 6.F90 7.F95 8.r 9.m 10.upc
+foo_SOURCES = 1.f 2.for 3.f90 4.f95 5.F 6.F90 7.F95 8.r 9.m 10.mm 11.upc
 END
 
 $ACLOCAL
 $AUTOMAKE
 
-for ext in f for f90 f95 F F90 F95 r m upc
+for ext in f for f90 f95 F F90 F95 r m mm upc
 do
    # Some versions of the BSD shell wrongly exit when 'set -e' is active
    # if the last command within a compound statement fails and is guarded
diff --git a/t/list-of-tests.mk b/t/list-of-tests.mk
index 3ff1c2c..ecb5bf2 100644
--- a/t/list-of-tests.mk
+++ b/t/list-of-tests.mk
@@ -694,8 +694,15 @@ t/nolink.sh \
 t/nostdinc.sh \
 t/notrans.sh \
 t/number.sh \
-t/objc.sh \
-t/objc2.sh \
+t/objc-basic.sh \
+t/objc-minidemo.sh \
+t/objc-flags.sh \
+t/objc-deps.sh \
+t/objcxx-basic.sh \
+t/objcxx-minidemo.sh \
+t/objcxx-flags.sh \
+t/objcxx-deps.sh \
+t/objc-megademo.sh \
 t/objext-pr10128.sh \
 t/oldvars.sh \
 t/order.sh \
diff --git a/t/nodep2.sh b/t/nodep2.sh
index edf0fa9..cc80058 100755
--- a/t/nodep2.sh
+++ b/t/nodep2.sh
@@ -20,7 +20,7 @@
 
 cat > Makefile.am << 'END'
 bin_PROGRAMS = foo
-foo_SOURCES = a.c b.cpp c.m d.S e.java f.upc
+foo_SOURCES = a.c b.cpp c.m cxx.mm d.S e.java f.upc
 END
 
 cat > configure.ac << 'END'
@@ -30,6 +30,12 @@ AC_CONFIG_FILES([Makefile])
 AC_PROG_CC
 AC_PROG_CXX
 AC_PROG_OBJC
+# FIXME: this is to cater to older autoconf; remove this once we
+# FIXME: automake requires Autoconf 2.65 or later.
+m4_ifdef([AC_PROG_OBJCXX], [AC_PROG_OBJCXX], [
+  AC_SUBST([OBJCXX], [whocares])
+  AM_CONDITIONAL([am__fastdepOBJCXX], [whocares])
+])
 AM_PROG_AS
 AM_PROG_GCJ
 AM_PROG_UPC
diff --git a/t/objc2.sh b/t/objc-basic.sh
similarity index 58%
rename from t/objc2.sh
rename to t/objc-basic.sh
index 290bf26..f608fbc 100755
--- a/t/objc2.sh
+++ b/t/objc-basic.sh
@@ -1,5 +1,5 @@
 #! /bin/sh
-# Copyright (C) 2002-2012 Free Software Foundation, Inc.
+# Copyright (C) 2012 Free Software Foundation, Inc.
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -10,22 +10,29 @@
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-# Test that Automake suggests using AC_PROG_OBJC if Objective C sources
-# are used.
+# Basic tests on the Objective C support that don't actually
+# require an Objective-C compiler.
+# See also sister test 'objcxx-basic.sh'.
 
 . ./defs || Exit 1
 
-echo AC_PROG_CC >>configure.ac
-
-cat >Makefile.am <<'END'
+cat > Makefile.am <<'END'
 bin_PROGRAMS = hello
 hello_SOURCES = hello.m
 END
 
 $ACLOCAL
 AUTOMAKE_fails
-grep AC_PROG_OBJC stderr
+grep "'OBJC'.* undefined" stderr
+grep "add .*'AC_PROG_OBJC'" stderr
+
+rm -rf autom4te*.cache
+
+echo AC_PROG_OBJC >> configure.ac
+
+$ACLOCAL
+$AUTOMAKE
+$EGREP '^\.SUFFIXES:.* \.m( |$)' Makefile.in
+
+:
diff --git a/t/check7.sh b/t/objc-deps.sh
similarity index 50%
copy from t/check7.sh
copy to t/objc-deps.sh
index 574569b..a2e4212 100755
--- a/t/check7.sh
+++ b/t/objc-deps.sh
@@ -1,5 +1,5 @@
 #! /bin/sh
-# Copyright (C) 2007-2012 Free Software Foundation, Inc.
+# Copyright (C) 2012 Free Software Foundation, Inc.
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -14,54 +14,58 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-# Check EXEEXT extension for XFAIL_TESTS.
+# Automatic dependency tracking for Objective C.
+# See also sister test 'objcxx-deps.sh'.
 
-required=cc
 . ./defs || Exit 1
 
 cat >> configure.ac << 'END'
-AC_PROG_CC
+AC_PROG_OBJC
 AC_OUTPUT
 END
 
 cat > Makefile.am << 'END'
-TESTS = $(XFAIL_TESTS)
-XFAIL_TESTS = a b c d
-check_PROGRAMS = a c d
-check_SCRIPTS = b
-EXTRA_DIST = $(check_SCRIPTS)
+bin_PROGRAMS = foo
+foo_SOURCES = bar.m baz.h baz2.h
+END
 
-.PHONY: print-xfail-tests
-print-xfail-tests:
-       @echo BEG: $(XFAIL_TESTS) :END
+cat > baz.h << 'END'
+#include <stdio.h>
+#include <stdlib.h>
+#include "baz2.h"
 END
 
-cat > b <<'END'
-#! /bin/sh
-exit 1
+cat > baz2.h << 'END'
+#define MSG "Hello, World"
 END
-chmod a+x b
 
-cat > a.c <<'END'
-#include <stdlib.h>
+cat > bar.m << 'END'
+/* The use of #import makes this valid Object C but invalid C. */
+#import "baz.h"
 int main (void)
 {
-  return EXIT_FAILURE;
+    fprintf (stdout, "%s\n", MSG);
+    return EXIT_SUCCESS;
 }
 END
 
-cp a.c c.c
-cp a.c d.c
-
 $ACLOCAL
 $AUTOCONF
-$AUTOMAKE -a
+$AUTOMAKE --add-missing
 
-./configure
-$MAKE check
-EXEEXT=.bin $MAKE -e print-xfail-tests >stdout || {  cat stdout; Exit 1; }
-cat stdout
-$FGREP 'BEG: a.bin b c.bin d.bin :END' stdout
+./configure --enable-dependency-tracking
+$MAKE
+cross_compiling || (./foo | $FGREP 'Hello, World') || Exit 1
+$sleep
+: > old
+echo '#define MSG "Howdy, Earth"' > baz2.h
+$MAKE
+if test -f foo; then
+  is_newest foo old
+else
+  is_newest foo.exe old
+fi
+cross_compiling || (./foo | $FGREP 'Howdy, Earth') || Exit 1
 
 $MAKE distcheck
 
diff --git a/t/objc-flags.sh b/t/objc-flags.sh
new file mode 100755
index 0000000..6c2b1e6
--- /dev/null
+++ b/t/objc-flags.sh
@@ -0,0 +1,62 @@
+#! /bin/sh
+# Copyright (C) 2012 Free Software Foundation, Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# Test Objective C compilation flags.
+
+. ./defs || Exit 1
+
+cat >> configure.ac << 'END'
+AC_PROG_OBJC
+AC_OUTPUT
+END
+
+cat > Makefile.am << 'END'
+AM_DEFAULT_SOURCE_EXT = .m
+bin_PROGRAMS = foo2 foo4
+AM_OBJCFLAGS = -DVALUE=2 -DERROR=1
+foo4_OBJCFLAGS = -DVALUE=4 -DERROR=1
+END
+
+for i in 2 4; do
+  unindent > foo$i.m << END
+    /* Let's make this file valid Objective C but invalid C. */
+    #import <stdlib.h>
+    @interface Who_Cares { } @end
+    #ifdef ERROR
+    #  error "macro ERROR is defined for foo.m"
+    #else
+    #  if VALUE == $i
+         int main (void) { exit (0); }
+    #  else
+    #    error "VALUE is != $i in foo.m"
+    #  endif
+    #endif
+END
+done
+
+$ACLOCAL
+$AUTOCONF
+$AUTOMAKE -a
+
+$FGREP OBJCFLAGS Makefile.in # For debugging.
+grep '\$(OBJCFLAGS).*\$(AM_OBJCFLAGS)'       Makefile.in && Exit 1
+grep '\$(OBJCFLAGS).*\$(foo.*_OBJCFLAGS)'    Makefile.in && Exit 1
+grep '\$(foo.*_OBJCFLAGS).*\$(AM_OBJCFLAGS)' Makefile.in && Exit 1
+
+./configure OBJCFLAGS=-UERROR
+$MAKE 
+
+:
diff --git a/t/objc-megademo.sh b/t/objc-megademo.sh
new file mode 100755
index 0000000..bad2aee
--- /dev/null
+++ b/t/objc-megademo.sh
@@ -0,0 +1,347 @@
+#! /bin/sh
+# Copyright (C) 2012 Free Software Foundation, Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# Stress test on Objective C/C++.
+
+required=libtoolize
+. ./defs || Exit 1
+
+## Autotools Input Files.
+
+cat > configure.ac << 'END'
+AC_INIT([play], [1.3], address@hidden)
+
+dnl Support for Object C++ was introduced only in Autoconf 2.65.
+AC_PREREQ([2.65])
+AC_CONFIG_SRCDIR([play.c])
+AC_CONFIG_AUX_DIR([build-aux])
+AC_CONFIG_MACRO_DIR([m4])
+
+AM_INIT_AUTOMAKE
+
+AM_PROG_AR
+LT_INIT
+
+AC_PROG_CC
+AC_PROG_CXX
+AC_PROG_OBJC
+AC_PROG_OBJCXX
+
+AC_LANG_PUSH([Objective C])
+AC_CACHE_CHECK(
+  [whether the Objective C compiler really works],
+  [my_cv_objc_works],
+  [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#import <stdio.h>]],
+                                   [[printf ("foo\n");]])],
+                  [my_cv_objc_works=yes],
+                  [my_cv_objc_works=no])])
+AC_LANG_POP([Objective C])
+
+AC_LANG_PUSH([Objective C++])
+AC_CACHE_CHECK(
+  [whether the Objective C++ compiler really works],
+  [my_cv_objcxx_works],
+  [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#import <iostream>]],
+                                   [[std::cout << "foo" << "\n";]])],
+                  [my_cv_objcxx_works=yes],
+                  [my_cv_objcxx_works=no])])
+AC_LANG_POP([Objective C++])
+
+if test $my_cv_objc_works != yes; then
+  AC_MSG_ERROR([couldn't find a working Objective C compiler], [77])
+fi
+
+if test $my_cv_objcxx_works != yes; then
+  AC_MSG_ERROR([couldn't find a working Objective C++ compiler], [77])
+fi
+
+AC_CONFIG_HEADERS([config.h])
+AC_CONFIG_FILES([Makefile])
+
+AC_OUTPUT
+END
+
+cat > Makefile.am << 'END'
+bin_PROGRAMS = play
+play_SOURCES = play.h play.c playxx.cxx playo.m playoxx.mm
+play_LDADD = libfoo.la
+play_LDFLAGS = -lobjc
+lib_LTLIBRARIES = libfoo.la
+libfoo_la_SOURCES = foo.h foo.c fooxx.cxx fooo.m foooxx.mm
+END
+
+## Run Autotools.
+
+libtoolize
+if $ACLOCAL; then
+  : We have a modern enough autoconf, go ahead.
+elif test $? -eq 63; then
+  skip_ "Object C++ support requires Autoconf 2.65 or later"
+else
+  Exit 1 # Some other aclocal failure.
+fi
+$AUTOHEADER
+$AUTOCONF
+$AUTOMAKE --add-missing
+
+## Program Sources.
+
+cat > play.h << 'END'
+#ifndef PLAY_H
+#define PLAY_H
+
+#include "foo.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+void hello_cxx (void);
+void hello_objc (void);
+void hello_objcxx (void);
+
+#ifdef __OBJC__
address@hidden Hello_ObjC
+{ }
++ (void)display;
address@hidden
+#endif /* __OBJC__ */
+
+#ifdef __cplusplus
+}
+
+class Hello_CXX
+{
+  public:
+    Hello_CXX() { }
+    virtual ~Hello_CXX () { }
+    void hello_cxx ();
+};
+
+#ifdef __OBJC__
address@hidden Hello_ObjCXX
+{ }
++ (void)display;
address@hidden
+
+class Hello_OBJCXX
+{
+  public:
+    Hello_OBJCXX () { }
+    virtual ~Hello_OBJCXX () { }
+    void hello_objcxx();
+};
+#endif /* __OBJC__ */
+
+#endif /* __cplusplus */
+
+#endif /* PLAY_H */
+END
+
+cat > play.c << 'END'
+#include "play.h"
+int main (void)
+{
+  printf ("[Hello C,");
+  world_c ();
+  hello_cxx ();
+  hello_objc ();
+  hello_objcxx ();
+  return 0;
+}
+END
+
+cat > playxx.cxx << 'END'
+#include "play.h"
+
+void hello_cxx(void)
+{
+  Hello_CXX *hello = new Hello_CXX;
+  hello->hello_cxx();
+}
+
+void Hello_CXX::hello_cxx()
+{
+  std::cout << "[Hello C++,";
+  World_CXX *world = new World_CXX;
+  world->world_cxx();
+}
+END
+
+cat > playo.m << 'END'
+#import "play.h"
+
+void hello_objc (void)
+{
+  [Hello_ObjC display];
+}
+
address@hidden Hello_ObjC
++ (void)display
+{
+  printf ("[Hello ObjC,");
+  [World_ObjC display];
+}
address@hidden
+END
+
+cat > playoxx.mm << 'END'
+#import "play.h"
+
+// Calling: C -> C++ -> ObjC
+
+void hello_objcxx (void)
+{
+  Hello_OBJCXX *hello = new Hello_OBJCXX;
+  hello->hello_objcxx ();
+}
+
+void Hello_OBJCXX::hello_objcxx ()
+{
+  [Hello_ObjCXX display];
+}
+
address@hidden Hello_ObjCXX
++ (void)display
+{
+  std::cout << "[Hello ObjC++,";
+  [World_ObjCXX display];
+}
address@hidden
+END
+
+## Library Sources.
+
+cat > foo.h << 'END'
+#ifndef FOO_H
+#define FOO_H
+
+#ifdef __cplusplus
+#include <iostream>
+extern "C" {
+#else
+#include <stdio.h>
+#endif
+
+void world_c (void);
+
+#ifdef __OBJC__
address@hidden World_ObjC
+{ }
++ (void)display;
address@hidden
+#endif /* __OBJC__ */
+
+#ifdef __cplusplus
+}
+
+class World_CXX
+{
+  public:
+    World_CXX() { }
+    virtual ~World_CXX () { }
+    void world_cxx ();
+};
+
+#ifdef __OBJC__
+class World_OBJCXX
+{
+  public:
+    World_OBJCXX () { }
+    virtual ~World_OBJCXX () { }
+    void world_objcxx ();
+};
+
address@hidden World_ObjCXX
+{ }
++ (void)display;
address@hidden
+#endif /* __OBJC__ */
+
+#endif /* __cplusplus */
+
+#endif /* FOO_H */
+END
+
+cat > foo.c << 'END'
+#include "foo.h"
+
+void world_c (void)
+{
+  printf (" world C]\n");
+}
+END
+
+cat > fooxx.cxx << 'END'
+#include "foo.h"
+
+void World_CXX::world_cxx ()
+{
+  std::cout << " world C++]" << "\n";
+}
+END
+
+cat > fooo.m << 'END'
+#import "foo.h"
+
address@hidden World_ObjC
++ (void)display
+{
+  printf (" world ObjC]\n");
+}
address@hidden
+END
+
+cat > foooxx.mm << 'END'
+#import "foo.h"
+
+// Calling: ObjC -> C++
+
address@hidden World_ObjCXX
++ (void)display
+{
+  World_OBJCXX *world = new World_OBJCXX;
+  world->world_objcxx ();
+}
address@hidden
+
+void World_OBJCXX::world_objcxx ()
+{
+  std::cout << " world ObjC++]" << "\n";
+}
+END
+
+## Configure and build.
+
+./configure
+$MAKE
+
+if cross_compiling; then :; else
+  unindent > exp << 'END'
+    [Hello C, world C]
+    [Hello C++, world C++]
+    [Hello ObjC, world ObjC]
+    [Hello ObjC++, world ObjC++]
+END
+  ./play > got || { cat got; Exit 1; }
+  cat exp
+  cat got
+  diff exp got
+fi
+
+$MAKE distcheck
+
+:
diff --git a/t/objc-minidemo.sh b/t/objc-minidemo.sh
new file mode 100755
index 0000000..acd7e19
--- /dev/null
+++ b/t/objc-minidemo.sh
@@ -0,0 +1,76 @@
+#! /bin/sh
+# Copyright (C) 2012 Free Software Foundation, Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# Dummy demo package using Objective C and doing distcheck.
+# See also sister test 'objcxx-minidemo.sh'.
+
+required=native
+. ./defs || Exit 1
+
+cat >> configure.ac << 'END'
+AC_PROG_OBJC
+AC_CONFIG_HEADERS([config.h])
+AC_OUTPUT
+END
+
+cat > Makefile.am << 'END'
+AM_DEFAULT_SOURCE_EXT = .m
+bin_PROGRAMS = ok
+noinst_PROGRAMS = ko
+TESTS = $(bin_PROGRAMS) $(XFAIL_TESTS)
+XFAIL_TESTS = $(noinst_PROGRAMS)
+END
+
+cat > ok.m << 'END'
+/* The use of #import makes this valid Object C but invalid C. */
+#import <stdio.h>
+#import <config.h>
+int main (void)
+{
+    printf ("Success (%s)\n", PACKAGE_STRING);
+    return 0;
+}
+END
+
+cat > ko.m << 'END'
+/* The use of #import makes this valid Object C but invalid C. */
+#import <stdio.h>
+int main (void)
+{
+    printf("Failure\n");
+    return 1;
+}
+END
+
+if $ACLOCAL; then
+  : We have a modern enough autoconf, go ahead.
+elif test $? -eq 63; then
+  skip_ "Object C++ support requires Autoconf 2.65 or later"
+else
+  Exit 1 # Some other aclocal failure.
+fi
+
+$ACLOCAL
+$AUTOCONF
+$AUTOHEADER
+$AUTOMAKE --add-missing
+
+./configure
+$MAKE
+$MAKE check
+$MAKE distcheck
+
+:
diff --git a/t/objc.sh b/t/objc.sh
deleted file mode 100755
index f56c76d..0000000
--- a/t/objc.sh
+++ /dev/null
@@ -1,36 +0,0 @@
-#! /bin/sh
-# Copyright (C) 2001-2012 Free Software Foundation, Inc.
-#
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 2, or (at your option)
-# any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-# Test that '.m' extension works.
-# From Ralf Corsepius (for C++).
-
-. ./defs || Exit 1
-
-cat >> configure.ac << 'END'
-AC_PROG_OBJC
-END
-
-cat > Makefile.am << 'END'
-bin_PROGRAMS = hello
-hello_SOURCES = hello.m
-END
-
-$ACLOCAL
-$AUTOMAKE
-
-grep '^\.SUFFIXES:.*\.m' Makefile.in
-
-:
diff --git a/t/objcxx-basic.sh b/t/objcxx-basic.sh
new file mode 100755
index 0000000..be2cdf7
--- /dev/null
+++ b/t/objcxx-basic.sh
@@ -0,0 +1,49 @@
+#! /bin/sh
+# Copyright (C) 2012 Free Software Foundation, Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# Basic tests on the Objective C++ support that don't actually
+# require an Objective-C++ compiler.
+# See also sister test 'objc-basic.sh'.
+
+. ./defs || Exit 1
+
+cat > Makefile.am <<'END'
+bin_PROGRAMS = hello
+hello_SOURCES = hello.mm
+END
+
+$ACLOCAL
+AUTOMAKE_fails
+grep "'OBJCXX'.* undefined" stderr
+grep "add .*'AC_PROG_OBJCXX'" stderr
+
+rm -rf autom4te*.cache
+
+cat >> configure.ac <<'END'
+dnl Support for Object C++ was introduced only in Autoconf 2.65.
+AC_PREREQ([2.65])
+AC_PROG_OBJCXX
+END
+
+if $ACLOCAL; then
+  : We have a modern enough autoconf, go ahead.
+elif test $? -eq 63; then
+  skip_ "Object C++ support requires Autoconf 2.65 or later"
+else
+  Exit 1 # Some other aclocal failure.
+fi
+
+$AUTOMAKE
+$EGREP '^\.SUFFIXES:.* \.mm( |$)' Makefile.in
+
+:
diff --git a/t/objcxx-deps.sh b/t/objcxx-deps.sh
new file mode 100755
index 0000000..24665cc
--- /dev/null
+++ b/t/objcxx-deps.sh
@@ -0,0 +1,81 @@
+#! /bin/sh
+# Copyright (C) 2012 Free Software Foundation, Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# Automatic dependency tracking for Objective C++.
+# See also sister test 'objc-deps.sh'.
+
+. ./defs || Exit 1
+
+cat >> configure.ac << 'END'
+dnl Support for Object C++ was introduced only in Autoconf 2.65.
+AC_PREREQ([2.65])
+AC_PROG_OBJCXX
+AC_OUTPUT
+END
+
+cat > Makefile.am << 'END'
+bin_PROGRAMS = foo
+foo_SOURCES = bar.mm baz.h++ baz2.hh
+END
+
+cat > baz.h++ << 'END'
+#include <iostream>
+using namespace std;
+#include "baz2.hh"
+END
+
+cat > baz2.hh << 'END'
+#define MSG "Hello, World"
+END
+
+cat > bar.mm << 'END'
+/* The use of #import makes this valid Object C++ but invalid C++. */
+#import "baz.h++"
+int main (void)
+{
+    cout << MSG << "\n";
+    return 0;
+}
+END
+
+if $ACLOCAL; then
+  : We have a modern enough autoconf, go ahead.
+elif test $? -eq 63; then
+  skip_ "Object C++ support requires Autoconf 2.65 or later"
+else
+  Exit 1 # Some other aclocal failure.
+fi
+$AUTOCONF
+$AUTOMAKE --add-missing
+
+./configure --enable-dependency-tracking
+$MAKE
+cross_compiling || (./foo | $FGREP 'Hello, World') || Exit 1
+
+$sleep
+: > old
+echo '#define MSG "Howdy, Earth"' > baz2.hh
+$MAKE
+if test -f foo; then
+  is_newest foo old
+else
+  is_newest foo.exe old
+fi
+cross_compiling || (./foo | $FGREP 'Howdy, Earth') || Exit 1
+
+$MAKE distcheck
+
+:
diff --git a/t/objcxx-flags.sh b/t/objcxx-flags.sh
new file mode 100755
index 0000000..aea7e19
--- /dev/null
+++ b/t/objcxx-flags.sh
@@ -0,0 +1,72 @@
+#! /bin/sh
+# Copyright (C) 2012 Free Software Foundation, Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# Test Objective C++ compilation flags.
+# See also sister test 'objc-flags.sh'.
+
+. ./defs || Exit 1
+
+cat >> configure.ac << 'END'
+dnl Support for Object C++ was introduced only in Autoconf 2.65.
+AC_PREREQ([2.65])
+AC_PROG_OBJCXX
+AC_OUTPUT
+END
+
+cat > Makefile.am << 'END'
+AM_DEFAULT_SOURCE_EXT = .mm
+bin_PROGRAMS = foo2 foo4
+AM_OBJCXXFLAGS = -DVALUE=2 -DERROR=1
+foo4_OBJCXXFLAGS = -DVALUE=4 -DERROR=1
+END
+
+for i in 2 4; do
+  unindent > foo$i.mm << END
+    /* Let's make this file valid Objective C but invalid C. */
+    #import <stdlib.h>
+    @interface Who_Cares { } @end
+    #ifdef ERROR
+    #  error "macro ERROR is defined for foo.mm"
+    #else
+    #  if VALUE == $i
+         int main (void) { exit (0); }
+    #  else
+    #    error "VALUE is != $i in foo.mm"
+    #  endif
+    #endif
+END
+done
+
+if $ACLOCAL; then
+  : We have a modern enough autoconf, go ahead.
+elif test $? -eq 63; then
+  skip_ "Object C++ support requires Autoconf 2.65 or later"
+else
+  Exit 1 # Some other aclocal failure.
+fi
+
+$AUTOCONF
+$AUTOMAKE -a
+
+$FGREP OBJCXXFLAGS Makefile.in # For debugging.
+grep '\$(OBJCXXFLAGS).*\$(AM_OBJCXXFLAGS)'       Makefile.in && Exit 1
+grep '\$(OBJCXXFLAGS).*\$(foo.*_OBJCXXFLAGS)'    Makefile.in && Exit 1
+grep '\$(foo.*_OBJCXXFLAGS).*\$(AM_OBJCXXFLAGS)' Makefile.in && Exit 1
+
+./configure OBJCXXFLAGS=-UERROR
+$MAKE 
+
+:
diff --git a/t/objcxx-minidemo.sh b/t/objcxx-minidemo.sh
new file mode 100755
index 0000000..fe93ea6
--- /dev/null
+++ b/t/objcxx-minidemo.sh
@@ -0,0 +1,77 @@
+#! /bin/sh
+# Copyright (C) 2012 Free Software Foundation, Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# Dummy demo package using Objective C++ and doing distcheck.
+# See also sister test 'objc-minidemo.sh'.
+
+required=native
+. ./defs || Exit 1
+
+cat >> configure.ac << 'END'
+dnl Support for Object C++ was introduced only in Autoconf 2.65.
+AC_PREREQ([2.65])
+AC_PROG_OBJCXX
+AC_CONFIG_HEADERS([config.h])
+AC_OUTPUT
+END
+
+cat > Makefile.am << 'END'
+AM_DEFAULT_SOURCE_EXT = .mm
+bin_PROGRAMS = ok
+noinst_PROGRAMS = ko
+TESTS = $(bin_PROGRAMS) $(XFAIL_TESTS)
+XFAIL_TESTS = $(noinst_PROGRAMS)
+END
+
+cat > ok.mm << 'END'
+/* The use of #import makes this valid Object C++ but invalid C++. */
+#import <iostream>
+#import <config.h>
+using namespace std;
+int main (void)
+{
+    cout << "Success (" << PACKAGE_STRING << ")\n";
+    return 0;
+}
+END
+
+cat > ko.mm << 'END'
+/* The use of #import makes this valid Object C++ but invalid C++. */
+#import <cstdio>
+int main (void)
+{
+    printf("Failure\n");
+    return 1;
+}
+END
+
+if $ACLOCAL; then
+  : We have a modern enough autoconf, go ahead.
+elif test $? -eq 63; then
+  skip_ "Object C++ support requires Autoconf 2.65 or later"
+else
+  Exit 1 # Some other aclocal failure.
+fi
+$AUTOCONF
+$AUTOHEADER
+$AUTOMAKE --add-missing
+
+./configure
+$MAKE
+$MAKE check
+$MAKE distcheck
+
+:


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