--- /dev/null
+#!/bin/sh
+# Copyright (C) 2010 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/>.
+
+# Check silent-rules mode for C++.
+
+required='g++' # FIXME: any decent C++ compiler should be OK
+. ./defs
+
+set -e
+
+mkdir sub
+
+cat >>configure.in <<'EOF'
+AM_SILENT_RULES
+AC_PROG_CXX
+AC_CONFIG_FILES([sub/Makefile])
+AC_OUTPUT
+EOF
+
+cat > Makefile.am <<'EOF'
+# Need generic and non-generic rules.
+bin_PROGRAMS = foo1 foo2
+foo1_SOURCES = foo.cpp baz.cxx quux.cc
+foo2_SOURCES = $(foo1_SOURCES)
+foo2_CXXFLAGS = $(AM_CXXFLAGS)
+SUBDIRS = sub
+EOF
+
+cat > sub/Makefile.am <<'EOF'
+AUTOMAKE_OPTIONS = subdir-objects
+# Need generic and non-generic rules.
+bin_PROGRAMS = bar1 bar2
+bar1_SOURCES = bar.cpp
+bar2_SOURCES = $(bar1_SOURCES)
+bar2_CXXFLAGS = $(AM_CXXFLAGS)
+EOF
+
+cat > foo.cpp <<'EOF'
+using namespace std; /* C compilers fail on this */
+int main() { return 0; }
+EOF
+
+# let's try out other extensions too
+echo 'class Baz { public: int i; };' > baz.cxx
+echo 'class Quux { public: bool b; };' > quux.cc
+
+cp foo.cpp sub/bar.cpp
+
+$ACLOCAL
+$AUTOMAKE --add-missing
+$AUTOCONF
+
+# configure once for fastdep, once for non-fastdep, once for nodep
+for config_args in \
+ '' \
+ am_cv_CC_dependencies_compiler_type=gcc \
+ --disable-dependency-tracking
+do
+ ./configure $config_args --enable-silent-rules
+ $MAKE >stdout || { cat stdout; Exit 1; }
+ cat stdout
+
+ $EGREP ' (-c|-o)' stdout && Exit 1
+ grep 'mv ' stdout && Exit 1
+
+ grep 'CXX .*foo\.' stdout
+ grep 'CXX .*baz\.' stdout
+ grep 'CXX .*quux\.' stdout
+ grep 'CXX .*bar\.' stdout
+ grep 'CXXLD .*foo1' stdout
+ grep 'CXXLD .*bar1' stdout
+ grep 'CXXLD .*foo2' stdout
+ grep 'CXXLD .*bar2' stdout
+
+ # Ensure a clean rebuild.
+ $MAKE clean
+
+ $MAKE V=1 >stdout || { cat stdout; Exit 1; }
+ cat stdout
+
+ grep ' -c ' stdout
+ grep ' -o ' stdout
+
+ $EGREP '(CC|CXX|LD) ' stdout && Exit 1
+
+ # Ensure a clean reconfiguration/rebuild.
+ $MAKE clean
+ $MAKE maintainer-clean
+
+done
+
+: