Check in gcc sources for prebuilt toolchains in Eclair.

1 files changed, 1514 insertions, 0 deletions

diff --git a/gcc-4.2.1/libjava/configure.ac b/gcc-4.2.1/libjava/configure.ac
new file mode 100644
index 000000000..f1735a1fe
--- /dev/null
+++ b/gcc-4.2.1/libjava/configure.ac
@@ -0,0 +1,1514 @@
+dnl # Process this with autoconf to create configure
+AC_PREREQ(2.59)
+# Still use "libjava" here to placate dejagnu.
+AC_INIT([libjava], [version-unused],, [libjava])
+
+AC_CONFIG_SRCDIR(java/lang/System.java)
+
+GCC_TOPLEV_SUBDIRS
+
+# We use these options to decide which functions to include.
+AC_ARG_WITH(target-subdir,
+  AS_HELP_STRING([--with-target-subdir=SUBDIR],
+                 [configure in a subdirectory]))
+
+# We may get other options which we don't document:
+# --with-target-subdir, --with-multisrctop, --with-multisubdir
+
+# Find the rest of the source tree framework.
+AM_ENABLE_MULTILIB(, ..)
+
+AC_CANONICAL_SYSTEM
+_GCC_TOPLEV_NONCANONICAL_BUILD
+_GCC_TOPLEV_NONCANONICAL_TARGET
+
+AC_SUBST(target_noncanonical)
+
+# This works around the fact that libtool configuration may change LD
+# for this particular configuration, but some shells, instead of
+# keeping the changes in LD private, export them just because LD is
+# exported.
+ORIGINAL_LD_FOR_MULTILIBS=$LD
+
+AC_PROG_LN_S
+
+# This works around an automake problem.
+mkinstalldirs="`cd $ac_aux_dir && ${PWDCMD-pwd}`/mkinstalldirs"
+AC_SUBST(mkinstalldirs)
+
+AC_ARG_WITH(cross-host,
+  AS_HELP_STRING([--with-cross-host=HOST],
+                 [configure with a cross compiler from HOST]))
+
+AC_ARG_WITH(newlib,
+  AS_HELP_STRING([--with-newlib],
+                 [configure with newlib]))
+
+AC_ARG_ENABLE(version-specific-runtime-libs,
+  AS_HELP_STRING([--enable-version-specific-runtime-libs],    
+                 [specify that runtime libraries should be installed in a compiler-specific directory]),
+    [case "$enableval" in
+      yes) version_specific_libs=yes ;;
+      no)  version_specific_libs=no ;;
+      *)   AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);;
+     esac],
+    [version_specific_libs=no]
+)
+
+AC_ARG_ENABLE(plugin,
+  AS_HELP_STRING([--enable-plugin],
+                 [build gcjwebplugin web browser plugin]),
+    [case "$enableval" in
+      yes) plugin_enabled=yes ;;
+      no)  plugin_enabled=no ;;
+      *)   AC_MSG_ERROR([Unknown argument to enable/disable plugin]);;
+     esac],
+    [plugin_enabled=no]
+)
+
+AC_ARG_ENABLE(gconf-peer,
+  AS_HELP_STRING([--enable-gconf-peer],
+                 [compile GConf native peers for util.preferences]),
+    [case "$enableval" in
+      yes) gconf_enabled=yes ;;
+      no)  gconf_enabled=no ;;
+      *)   AC_MSG_ERROR([Unknown argument to enable/disable gconf-peer]);;
+     esac],
+    [gconf_enabled=no]
+)
+
+# It may not be safe to run linking tests in AC_PROG_CC/AC_PROG_CXX.
+GCC_NO_EXECUTABLES
+
+# (1) We use an abnormal CXX (without library references), so we
+# must cache it under a different name.
+# (2) CC, CFLAGS, CXX, CXXFLAGS, LDFLAGS must not be 'precious', or
+# the non-multilib-adjusted value will be used in multilibs.
+# (3) As a side effect, we must SUBST CXXFLAGS, CFLAGS, and LDFLAGS ourselves.
+# (4) As another side effect, automake doesn't automatically include them
+# in Makefile.in.
+# (5) For libstdc++-v3, -fno-builtin must be present here so that a
+# non-conflicting form of std::exit can be guessed by AC_PROG_CXX, and
+# used in later tests.  This may not be necessary in libjava; I don't know.
+m4_define([ac_cv_prog_CXX],[glibcxx_cv_prog_CXX])
+m4_rename([_AC_ARG_VAR_PRECIOUS],[glibcxx_PRECIOUS])
+m4_define([_AC_ARG_VAR_PRECIOUS],[])
+save_CXXFLAGS="$CXXFLAGS"
+CXXFLAGS="$CXXFLAGS -fno-builtin"
+AC_PROG_CC
+AC_PROG_CXX
+CXXFLAGS="$save_CXXFLAGS"
+m4_rename([glibcxx_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
+AC_SUBST(CFLAGS)
+AC_SUBST(CXXFLAGS)
+AC_SUBST(LDFLAGS)
+
+AM_INIT_AUTOMAKE([1.9.0])
+
+AC_CHECK_TOOL(AS, as)
+AC_CHECK_TOOL(LD, ld)
+AC_CHECK_TOOL(AR, ar)
+AC_CHECK_TOOL(RANLIB, ranlib, :)
+AC_PROG_AWK
+AC_CHECK_PROGS([JAR], [jar fastjar], no)
+AC_PATH_PROG([ZIP], [zip], no)
+AC_PATH_PROG([UNZIP], [unzip], unzip)
+AM_CONDITIONAL(BASH_JAR, test "$JAR" = no)
+if test "$ZIP" = no; then
+  if test "$JAR" = no; then
+    AC_MSG_ERROR([cannot find neither zip nor jar, cannot continue])
+  fi
+else
+  # InfoZIP available, use the 'guaranteed' Bourne-shell JAR to build libjava
+  JAR=`pwd`/scripts/jar
+fi
+
+AC_PROG_INSTALL
+
+AM_MAINTAINER_MODE
+
+AC_EXEEXT
+
+# configure.host sets the following important variables
+#	libgcj_cflags    - host specific C compiler flags
+#	libgcj_cxxflags  - host specific C++ compiler flags
+#	libgcj_javaflags - host specific Java compiler flags
+
+libgcj_cflags=
+libgcj_cxxflags=
+libgcj_javaflags=
+
+. ${srcdir}/configure.host
+
+LIBGCJ_CFLAGS="${libgcj_cflags}"
+LIBGCJ_CXXFLAGS="${libgcj_cxxflags}"
+LIBGCJ_JAVAFLAGS="${libgcj_javaflags}"
+LIBGCJ_LD_SYMBOLIC="${libgcj_ld_symbolic}"
+AC_SUBST(LIBGCJ_CFLAGS)
+AC_SUBST(LIBGCJ_CXXFLAGS)
+AC_SUBST(LIBGCJ_JAVAFLAGS)
+AC_SUBST(LIBGCJ_LD_SYMBOLIC)
+
+# Only use libltdl for non-newlib builds.
+if test "x${with_newlib}" = "x" || test "x${with_newlib}" = "xno"; then
+   AC_LTDL_SHLIBPATH
+fi
+
+AC_CONFIG_HEADERS([include/config.h gcj/libgcj-config.h])
+
+# See if the user has requested runtime debugging.
+LIBGCJDEBUG="disable"
+AC_SUBST(LIBGCJDEBUG)
+AC_ARG_ENABLE(libgcj-debug,
+  AS_HELP_STRING([--enable-libgcj-debug],
+                 [enable runtime debugging code]),
+  [if test "$enable_libgcj_debug" = yes; then
+    AC_DEFINE(DEBUG, 1, [Define this if you want runtime debugging enabled.])
+    LIBGCJDEBUG="enable"
+  fi])
+
+# Determine which AWT peer libraries to build
+AC_ARG_ENABLE(java-awt,
+  AS_HELP_STRING([--enable-java-awt],
+                 [list of AWT peer implementations to be built]))
+
+peerlibs="`echo ${enable_java_awt} | tr ',' ' '`"
+use_xlib_awt=""
+use_gtk_awt=""
+use_qt_awt=""
+# The default toolkit to use is the first one specified.
+TOOLKIT=
+AC_SUBST(TOOLKIT)
+
+for peer in $peerlibs ; do
+  case $peer in
+    xlib)
+      if test "$no_x" = yes; then
+        echo "*** xlib peers requested but no X library available" 1>&2
+        exit 1
+      else
+        use_xlib_awt="yes"
+	if test -z "$TOOLKIT"; then
+	   TOOLKIT=gnu.awt.xlib.XToolkit
+	fi
+      fi
+      ;;
+    gtk)
+      if test "$no_x" = yes; then
+	 echo "*** gtk peers requested but no X library available" 1>&2
+	 exit 1
+      else
+	 use_gtk_awt=yes
+	 if test -z "$TOOLKIT"; then
+	    TOOLKIT=gnu.java.awt.peer.gtk.GtkToolkit
+	 fi
+      fi
+      ;;
+    qt)
+      if test "$no_x" = yes; then
+         # Perhaps we should admit the possibility of embedded Qt.
+	 echo "*** Qt peers requested but no X library available" 1>&2
+	 exit 1
+      else
+	 use_qt_awt=yes
+	 if test -z "$TOOLKIT"; then
+	    TOOLKIT=gnu.java.awt.peer.qt.QtToolkit
+	 fi
+      fi
+      ;;
+    no)
+      use_xlib_awt=
+      use_gtk_awt=
+      use_qt_awt=
+      break
+      ;;
+    *)
+      echo "*** unrecognised argument \"${peer}\" for --enable-java-awt" 1>&2
+      exit 1
+  esac
+done
+
+AM_CONDITIONAL(XLIB_AWT, test "$use_xlib_awt" = yes)
+
+# Create standard.omit based on decisions we just made.
+cp $srcdir/standard.omit.in standard.omit
+if test "$use_xlib_awt" != yes; then
+   echo gnu/awt/xlib >> standard.omit
+   echo gnu/gcj/xlib >> standard.omit
+fi
+
+if test -z "${with_multisubdir}"; then
+   builddotdot=.
+else
+   builddotdot=`echo ${with_multisubdir} | sed -e 's:[[^/]][[^/]]*:..:g'`
+fi
+
+NATIVE=yes
+
+# Which gcj do we use?
+which_gcj=default
+built_gcc_dir="`cd ${builddotdot}/../../${host_subdir}/gcc && ${PWDCMD-pwd}`"
+if test -n "${with_cross_host}"; then
+  # We are being configured with a cross compiler. We can't
+  # use ac_exeext, because that is for the target platform.
+  NATIVE=no
+  cross_host_exeext=
+  case "${with_cross_host}" in
+     *mingw* | *cygwin*)
+         cross_host_exeext=.exe
+     ;;
+  esac
+  if test -x "${built_gcc_dir}/gcj${cross_host_exeext}"; then
+     if test x"$build_noncanonical" = x"$with_cross_host"; then
+        # Ordinary cross (host!=target and host=build)
+        which_gcj=built
+     else
+        # Canadian cross (host!=target and host!=build)
+        which_gcj=cross
+     fi
+  else
+     which_gcj=cross
+  fi
+else
+  # We are being configured with a native or crossed-native compiler
+  if test -x "${built_gcc_dir}/gcj${ac_exeext}"; then
+     if test x"$build" = x"$host"; then
+        # True native build (host=target and host=build)
+        which_gcj=built
+     else
+        # Crossed-native build (host=target and host!=build)
+        which_gcj=cross
+     fi
+  else
+     which_gcj=path
+  fi
+fi
+case "${which_gcj}" in
+   built)
+      GCJ="$built_gcc_dir/gcj -B`${PWDCMD-pwd}`/ -B$built_gcc_dir/"
+      GCJH='$(top_builddir)/$(MULTIBUILDTOP)../../$(host_subdir)/gcc/gcjh'
+   ;;
+   cross)
+      if test "x${with_newlib}" = "xyes"; then
+         # FIXME (comment): Why is this needed?
+         GCC_UNWIND_INCLUDE=
+         GCJ="${target_noncanonical}-gcj"
+      else
+         GCJ="${target_noncanonical}-gcj -B`${PWDCMD-pwd}`/"
+      fi
+      GCJH='$(target_noncanonical)-gcjh'
+   ;;
+   path)
+      GCJ="gcj -B`${PWDCMD-pwd}`/"
+      GCJH=gcjh
+   ;;
+esac
+
+AC_SUBST(GCJH)
+
+# Create it, so that compile/link tests don't fail
+test -f libgcj.spec || touch libgcj.spec
+
+
+
+# Set up to configure Classpath.
+# FIXME: no supported way to pass args in autoconf.
+ac_configure_args="$ac_configure_args --with-fastjar=$JAR"
+ac_configure_args="$ac_configure_args --enable-tool-wrappers"
+ac_configure_args="$ac_configure_args --disable-load-library"
+ac_configure_args="$ac_configure_args --${LIBGCJDEBUG}-debug"
+ac_configure_args="$ac_configure_args --enable-default-toolkit=$TOOLKIT"
+dir1=`cd $srcdir && pwd`
+dir2=`pwd`
+ac_configure_args="$ac_configure_args --with-vm-classes=$dir1:$dir2"
+ac_configure_args="$ac_configure_args --disable-core-jni"
+dnl FIXME?
+ac_configure_args="$ac_configure_args --disable-examples"
+ac_configure_args="$ac_configure_args --with-glibj=build"
+if test "$plugin_enabled" != yes; then
+  ac_configure_args="$ac_configure_args --disable-plugin"
+fi
+if test "$gconf_enabled" != yes; then
+  ac_configure_args="$ac_configure_args --disable-gconf-peer"
+  ac_configure_args="$ac_configure_args --enable-default-preferences-peer=gnu.java.util.prefs.FileBasedFactory"
+fi
+if test "$use_gtk_awt" != yes; then
+  ac_configure_args="$ac_configure_args --disable-gtk-peer"
+fi
+if test "$use_qt_awt" != yes; then
+  ac_configure_args="$ac_configure_args --disable-qt-peer"
+else
+  # We need this as qt is disabled by default in classpath.
+  ac_configure_args="$ac_configure_args --enable-qt-peer"
+fi
+dnl --with-gcj=$GCJ
+dnl --with-javah=$GCJH
+dnl gjdoc?
+dnl gtk-cairo -- just export here...
+dnl --enable-regen-headers?
+
+# Only use libltdl for non-newlib builds.
+if test "x${with_newlib}" = "x" || test "x${with_newlib}" = "xno"; then
+   AC_LIBLTDL_CONVENIENCE
+   AC_LIBTOOL_DLOPEN
+   DIRLTDL=libltdl
+   AC_DEFINE(USE_LTDL, 1, [Define if libltdl is in use.])
+   # Sigh.  Libtool's macro doesn't do the right thing.
+   INCLTDL="-I\$(top_srcdir)/libltdl $INCLTDL"
+   # FIXME: this is a hack.
+   sub_auxdir="`cd $ac_aux_dir && ${PWDCMD-pwd}`"
+   ac_configure_args="$ac_configure_args --with-auxdir=$sub_auxdir"
+fi
+AC_SUBST(INCLTDL)
+AC_SUBST(LIBLTDL)
+AC_SUBST(DIRLTDL)
+AC_PROG_LIBTOOL
+AM_PROG_GCJ
+AM_PROG_CC_C_O
+
+AC_CONFIG_SUBDIRS(classpath libltdl)
+
+# The -no-testsuite modules omit the test subdir.
+AM_CONDITIONAL(TESTSUBDIR, test -d $srcdir/testsuite)
+
+# Should the runtime set system properties by examining the 
+# environment variable GCJ_PROPERTIES?
+AC_ARG_ENABLE(getenv-properties,
+  AS_HELP_STRING([--disable-getenv-properties],
+                 [don't set system properties from GCJ_PROPERTIES]))
+
+# Whether GCJ_PROPERTIES is used depends on the target.
+if test -z "$enable_getenv_properties"; then
+   enable_getenv_properties=${enable_getenv_properties_default-yes}
+fi
+if test "$enable_getenv_properties" = no; then
+   AC_DEFINE(DISABLE_GETENV_PROPERTIES, 1,
+     [Define if system properties shouldn't be read from getenv("GCJ_PROPERTIES").])
+fi
+
+# Whether we should use arguments to main()
+if test -z "$enable_main_args"; then
+   enable_main_args=${enable_main_args_default-yes}
+fi
+if test "$enable_main_args" = no; then
+   AC_DEFINE(DISABLE_MAIN_ARGS, 1, [Define if we should ignore arguments to main().])
+fi
+
+
+# Should we use hashtable-based synchronization?
+# Currently works only for Linux X86/ia64
+# Typically faster and more space-efficient
+AC_ARG_ENABLE(hash-synchronization,
+  AS_HELP_STRING([--enable-hash-synchronization],
+                 [use global hash table for monitor locks]))
+
+if test -z "$enable_hash_synchronization"; then
+   enable_hash_synchronization=$enable_hash_synchronization_default
+fi
+
+AC_ARG_WITH(java-home,
+  AS_HELP_STRING([--with-java-home=DIRECTORY],
+                 [value of java.home system property]),
+		 [JAVA_HOME="${withval}"], [JAVA_HOME=""])
+AM_CONDITIONAL(JAVA_HOME_SET, test ! -z "$JAVA_HOME")
+AC_SUBST(JAVA_HOME)
+
+# What is the native OS API for MinGW?
+AC_ARG_WITH(win32-nlsapi,
+  AS_HELP_STRING([--with-win32-nlsapi=ansi or unicows or unicode],
+                 [native MinGW libgcj Win32 OS API (default is ansi)]),
+[case "${withval}" in
+  ansi) with_win32_nlsapi=ansi ;;
+  unicows) with_win32_nlsapi=unicows ;;
+  unicode) with_win32_nlsapi=unicode ;;
+  *) AC_MSG_ERROR(Bad value ${withval} for --with-win32-nlsapi.) ;;
+esac],[with_win32_nlsapi=ansi])
+
+case "${with_win32_nlsapi}" in
+  unicows | unicode) 
+    AC_DEFINE(MINGW_LIBGCJ_UNICODE, 1,
+      [Define if MinGW libgcj uses the Windows UNICODE OS API.])
+    ;;
+esac
+
+# configure.host sets slow_pthread_self if the synchronization code should 
+# try to avoid pthread_self calls by caching thread IDs in a hashtable.
+if test "${slow_pthread_self}" = "yes"; then
+  AC_DEFINE(SLOW_PTHREAD_SELF, 1,
+    [Define if if the synchronization code should try to avoid pthread_self calls by caching thread IDs in a hashtable.])
+fi
+
+# Check for gc debugging.  This option is handled both here and in the GC.
+AC_ARG_ENABLE(gc-debug,
+   AS_HELP_STRING([--enable-gc-debug],
+		  [include full support for pointer backtracing etc.]),
+[ if test "$enable_gc_debug" = "yes"; then
+    AC_DEFINE(LIBGCJ_GC_DEBUG, 1, 
+	      [Define if we want to use debug calls into the garbage collector.])
+  fi])
+
+# See if the user has the interpreter included.
+AC_ARG_ENABLE(interpreter,
+  AS_HELP_STRING([--enable-interpreter],
+                 [enable interpreter]),
+  [if test "$enable_interpreter" = yes; then
+    # This can also be set in configure.host.
+    libgcj_interpreter=yes
+  elif test "$enable_interpreter" = no; then
+    libgcj_interpreter=no
+  fi])
+
+if test "$libgcj_interpreter" = yes; then
+   AC_DEFINE(INTERPRETER, 1, [Define if you want a bytecode interpreter.])
+fi
+INTERPRETER="$libgcj_interpreter"
+AC_SUBST(INTERPRETER)
+
+AC_MSG_CHECKING([for exception model to use])
+AC_LANG_PUSH(C++)
+AC_ARG_ENABLE(sjlj-exceptions,
+  AS_HELP_STRING([--enable-sjlj-exceptions],
+                 [force use of builtin_setjmp for exceptions]),
+[:],
+[dnl Botheration.  Now we've got to detect the exception model.
+dnl Link tests against libgcc.a are problematic since -- at least
+dnl as of this writing -- we've not been given proper -L bits for
+dnl single-tree newlib and libgloss.
+dnl
+dnl This is what AC_TRY_COMPILE would do if it didn't delete the
+dnl conftest files before we got a change to grep them first.
+cat > conftest.$ac_ext << EOF
+[#]line __oline__ "configure"
+struct S { ~S(); };
+void bar();
+void foo()
+{
+  S s;
+  bar();
+}
+EOF
+old_CXXFLAGS="$CXXFLAGS"  
+CXXFLAGS=-S
+if AC_TRY_EVAL(ac_compile); then
+  if grep _Unwind_SjLj_Resume conftest.s >/dev/null 2>&1 ; then
+    enable_sjlj_exceptions=yes
+  elif grep _Unwind_Resume conftest.s >/dev/null 2>&1 ; then
+    enable_sjlj_exceptions=no
+  fi
+fi
+CXXFLAGS="$old_CXXFLAGS"
+rm -f conftest*])
+if test x$enable_sjlj_exceptions = xyes; then
+  AC_DEFINE(SJLJ_EXCEPTIONS, 1,
+	[Define if the compiler is configured for setjmp/longjmp exceptions.])
+  ac_exception_model_name=sjlj
+elif test x$enable_sjlj_exceptions = xno; then
+  ac_exception_model_name="call frame"
+else
+  AC_MSG_ERROR([unable to detect exception model])
+fi
+AC_LANG_POP(C++)
+AC_MSG_RESULT($ac_exception_model_name)
+
+# If we are non using SJLJ exceptions, and this host does not have support 
+# for unwinding from a signal handler, enable checked dereferences and divides.
+if test $can_unwind_signal = no && test $enable_sjlj_exceptions = no; then
+  CHECKREFSPEC=-fcheck-references
+  DIVIDESPEC=-fuse-divide-subroutine
+  EXCEPTIONSPEC=
+fi
+
+# See if the user wants to disable java.net.  This is the mildly
+# ugly way that we admit that target-side configuration sucks.
+AC_ARG_ENABLE(java-net,
+  AS_HELP_STRING([--disable-java-net],
+                 [disable java.net]))
+
+# Whether java.net is built by default can depend on the target.
+if test -z "$enable_java_net"; then
+   enable_java_net=${enable_java_net_default-yes}
+fi
+if test "$enable_java_net" = no; then
+   AC_DEFINE(DISABLE_JAVA_NET, 1, [Define if java.net native functions should be stubbed out.])
+fi
+
+# See if the user wants to configure without libffi.  Some
+# architectures don't support it, and default values are set in 
+# configure.host.
+AC_ARG_WITH(libffi,
+  AS_HELP_STRING([--without-libffi],
+                 [don't use libffi]),
+  [:],
+  [with_libffi=${with_libffi_default-yes}])
+
+LIBFFI=
+LIBFFIINCS=
+if test "$with_libffi" != no; then
+   AC_DEFINE(USE_LIBFFI, 1, [Define if we're to use libffi.])
+   LIBFFI=../libffi/libffi_convenience.la
+   LIBFFIINCS='-I$(top_srcdir)/../libffi/include -I../libffi/include'
+fi
+AC_SUBST(LIBFFI)
+AC_SUBST(LIBFFIINCS)
+
+# See if the user wants to disable JVMPI support.
+AC_ARG_ENABLE(jvmpi,
+  AS_HELP_STRING([--disable-jvmpi],
+                 [disable JVMPI support]))
+
+if test "$enable_jvmpi" != no; then
+    AC_DEFINE(ENABLE_JVMPI, 1, [Define if you are using JVMPI.])
+fi
+
+# If the target is an eCos system, use the appropriate eCos
+# I/O routines.
+# FIXME: this should not be a local option but a global target
+# system; at present there is no eCos target.
+TARGET_ECOS=${PROCESS-"no"}
+AC_ARG_WITH(ecos,
+[  --with-ecos             enable runtime eCos target support],
+TARGET_ECOS="$with_ecos"
+)
+
+PLATFORM_INNER_NAT_HDRS=
+case "$TARGET_ECOS" in
+   no) case "$host" in
+      *mingw*)
+            PLATFORM=Win32
+	    PLATFORMNET=Win32
+	    PLATFORMH=win32.h
+        CHECK_FOR_BROKEN_MINGW_LD
+      ;;
+      *)
+            PLATFORM=Posix
+	    PLATFORMNET=Posix
+	    PLATFORMH=posix.h
+	    PLATFORM_INNER_NAT_HDRS='java/lang/ConcreteProcess$$ProcessManager.h'
+      ;;
+      esac
+      ;;
+   *)
+      PLATFORM=Ecos
+      PLATFORMNET=NoNet
+      AC_DEFINE(ECOS, 1, [Define if you're running eCos.])
+      PLATFORMH=posix.h
+      ;;
+esac
+AC_SUBST(PLATFORM_INNER_NAT_HDRS)
+AC_CONFIG_LINKS(include/platform.h:include/$PLATFORMH)
+
+AC_EGREP_HEADER(uint32_t, stdint.h, AC_DEFINE(HAVE_INT32_DEFINED, 1,
+                                      [Define if you have int32_t and uint32_t.]))
+AC_EGREP_HEADER(uint32_t, inttypes.h, AC_DEFINE(HAVE_INT32_DEFINED, 1,
+                                        [Define if you have int32_t and uint32_t.]))
+AC_EGREP_HEADER(u_int32_t, sys/types.h, AC_DEFINE(HAVE_BSD_INT32_DEFINED, 1,
+                                          [Define if you have u_int32_t]))
+AC_EGREP_HEADER(u_int32_t, sys/config.h, AC_DEFINE(HAVE_BSD_INT32_DEFINED, 1,
+                                           [Define if you have u_int32_t]))
+
+AM_CONDITIONAL(USING_WIN32_PLATFORM, test "$PLATFORM" = Win32)
+AM_CONDITIONAL(USING_POSIX_PLATFORM, test "$PLATFORM" = Posix || test "$PLATFORM" = Ecos)
+
+case "$host" in
+  *-darwin*) DARWIN_CRT=true ;;
+  *) DARWIN_CRT=false ;;
+esac
+AM_CONDITIONAL(USING_DARWIN_CRT, $DARWIN_CRT)
+
+# These may not be defined in a non-ANS conformant embedded system.
+# FIXME: Should these case a runtime exception in that case?
+AC_EGREP_HEADER(mktime, time.h, AC_DEFINE(HAVE_MKTIME, 1,
+                                  [Define is you have 'mktime' in <time.h>]))
+AC_EGREP_HEADER(localtime, time.h, AC_DEFINE(HAVE_LOCALTIME, 1,
+                                  [Define is you have 'localtime' in <time.h>]))
+
+# Create the subdirectory for natFile.cc, or the attempt
+# to create the link will fail.
+test -d java || mkdir java
+test -d java/io || mkdir java/io
+test -d gnu || mkdir gnu
+AC_CONFIG_LINKS(java/io/natFile.cc:java/io/natFile${FILE-${PLATFORM}}.cc)
+
+# Likewise for ConcreteProcess.java and natConcreteProcess.cc.
+test -d java/lang || mkdir java/lang
+AC_CONFIG_LINKS(java/lang/ConcreteProcess.java:java/lang/${PLATFORM}Process.java)
+AC_CONFIG_LINKS(java/lang/natConcreteProcess.cc:java/lang/nat${PLATFORM}Process.cc)
+
+# Likewise for natInetAddress.cc and natVMNetworkInterface.cc.
+test -d java/net || mkdir java/net
+AC_CONFIG_LINKS(java/net/natInetAddress.cc:java/net/natInetAddress${PLATFORMNET}.cc)
+AC_CONFIG_LINKS(java/net/natVMNetworkInterface.cc:java/net/natVMNetworkInterface${PLATFORMNET}.cc)
+
+# Likewise for natPlainSocketImpl.cc and natPlainDatagramSocketImpl.cc.
+test -d gnu/java || mkdir gnu/java
+test -d gnu/java/net || mkdir gnu/java/net
+AC_CONFIG_LINKS(gnu/java/net/natPlainSocketImpl.cc:gnu/java/net/natPlainSocketImpl${PLATFORMNET}.cc)
+AC_CONFIG_LINKS(gnu/java/net/natPlainDatagramSocketImpl.cc:gnu/java/net/natPlainDatagramSocketImpl${PLATFORMNET}.cc)
+
+# Likewise for natPipeImpl.cc and natSelectorImpl.cc.
+test -d gnu/java/nio || mkdir gnu/java/nio
+AC_CONFIG_LINKS(gnu/java/nio/natPipeImpl.cc:gnu/java/nio/natPipeImpl${PLATFORM}.cc)
+AC_CONFIG_LINKS(gnu/java/nio/natSelectorImpl.cc:gnu/java/nio/natSelectorImpl${PLATFORM}.cc)
+test -d gnu/java/nio/channels || mkdir gnu/java/nio/channels
+AC_CONFIG_LINKS(gnu/java/nio/channels/natFileChannelImpl.cc:gnu/java/nio/channels/natFileChannel${FILE-${PLATFORM}}.cc)
+
+case "${host}" in
+    *mingw*)
+      SYSTEMSPEC="-lgdi32 -lws2_32"
+      if test "${with_win32_nlsapi}" = "unicows"; then
+        SYSTEMSPEC="-lunicows $SYSTEMSPEC"
+      fi
+    ;;
+    *)
+      SYSTEMSPEC=
+    ;;
+esac
+AC_SUBST(SYSTEMSPEC)
+
+LIBGCJTESTSPEC="-L`${PWDCMD-pwd}`/.libs -rpath `${PWDCMD-pwd}`/.libs"
+AC_SUBST(LIBGCJTESTSPEC)
+
+AC_ARG_WITH(system-zlib,
+  AS_HELP_STRING([--with-system-zlib],
+                 [use installed libz]))
+ZLIBSPEC=
+AC_SUBST(ZLIBSPEC)
+ZLIBTESTSPEC=
+AC_SUBST(ZLIBTESTSPEC)
+
+AC_PATH_XTRA
+
+# FIXME: this should be _libs on some hosts.
+libsubdir=.libs
+
+# extra LD Flags which are required for targets
+case "${host}" in
+*-*-darwin[[0-7]].*)
+    # For now we have to disable it on darwin[8-9] because it slows down
+    # the linking phase. A possible bug in ld?
+    # on Darwin -single_module speeds up loading of the dynamic libraries.
+    extra_ldflags_libjava=-Wl,-single_module
+    ;;
+esac
+AC_SUBST(extra_ldflags_libjava)
+
+# Allow the GC to be disabled.  Can be useful when debugging.
+AC_MSG_CHECKING([for garbage collector to use])
+AC_ARG_ENABLE(java-gc,
+  AS_HELP_STRING([--enable-java-gc=TYPE],
+                 [choose garbage collector (default is boehm)]),
+  [GC=$enableval],
+  [GC=boehm])
+GCLIBS=
+GCINCS=
+GCDEPS=
+GCSPEC=
+JC1GCSPEC=
+GCTESTSPEC=
+case "$GC" in
+ boehm)
+    AC_MSG_RESULT(boehm)
+    GCLIBS=../boehm-gc/libgcjgc_convenience.la
+    JC1GCSPEC='-fuse-boehm-gc'
+    GCTESTSPEC="-L`${PWDCMD-pwd}`/../boehm-gc/.libs -rpath `${PWDCMD-pwd}`/../boehm-gc/.libs"
+    GCINCS='-I$(top_srcdir)/../boehm-gc/include -I../boehm-gc/include'
+    GCOBJS=boehm.lo    
+    GCHDR=boehm-gc.h
+    # The POSIX thread support needs to know this.
+    AC_DEFINE(HAVE_BOEHM_GC, 1, [Define if Boehm GC in use.])
+    ;;
+ no)
+    AC_MSG_RESULT(none)
+    GCHDR=no-gc.h
+    ;;
+ *)
+    AC_MSG_ERROR([unrecognized collector "$GC"])
+    ;;
+esac
+AC_SUBST(GCLIBS)
+AC_SUBST(GCINCS)
+AC_SUBST(GCDEPS)
+AC_SUBST(GCSPEC)
+AC_SUBST(JC1GCSPEC)
+AC_SUBST(GCTESTSPEC)
+AC_CONFIG_LINKS(include/java-gc.h:include/$GCHDR)
+AM_CONDITIONAL(USING_BOEHMGC, test "$GC" = boehm)
+AM_CONDITIONAL(USING_NOGC, test "$GC" = no)
+
+
+AC_MSG_CHECKING([for thread model used by GCC])
+THREADS=`$CC -v 2>&1 | sed -n 's/^Thread model: //p'`
+AC_MSG_RESULT([$THREADS])
+
+case "$THREADS" in
+ no | none | single)
+    THREADS=none
+    ;;
+ posix | posix95 | pthreads)
+    THREADS=posix
+    case "$host" in
+     *-*-linux*)
+	AC_DEFINE(LINUX_THREADS, 1, [Define if using POSIX threads on Linux.])
+	;;
+    esac
+    ;;
+ win32)
+    ;;
+ decosf1 | irix | mach | os2 | solaris | dce | vxworks)
+    AC_MSG_ERROR(thread package $THREADS not yet supported)
+    ;;
+ *)
+    AC_MSG_ERROR($THREADS is an unknown thread package)
+    ;;
+esac
+
+THREADCXXFLAGS=
+THREADLDFLAGS=
+THREADLIBS=
+THREADINCS=
+THREADDEPS=
+THREADH=
+THREADSPEC=
+THREADSTARTFILESPEC=
+case "$THREADS" in
+ posix)
+    case "$host" in
+     *-*-cygwin*)
+	# Don't set THREADLIBS here.  Cygwin doesn't have -lpthread.
+	;;
+     *-*-freebsd[[1234]]*)
+	# Before FreeBSD 5, it didn't have -lpthread (or any library which
+	# merely adds pthread_* functions) but it does have a -pthread switch
+	# which is required at link-time to select -lc_r *instead* of -lc.
+	THREADLDFLAGS=-pthread
+	# Don't set THREADSPEC here as might be expected since -pthread is
+	# not processed when found within a spec file, it must come from
+	# the command line.  For now, the user must provide the -pthread
+	# switch to link code compiled with gcj.  In future, consider adding
+	# support for weak references to pthread_* functions ala gthr.h API.
+	THREADSPEC='%{!pthread: %{!shared: %eUnder this configuration, the user must provide -pthread when linking.}}'
+	;;
+     *-*-freebsd*)
+	# FreeBSD >=5.3 implements a model much closer to other modern UNIX
+	# systems which support threads and -lpthread.
+	THREADLDFLAGS=-pthread
+	THREADSPEC=-lpthread
+	;;
+     alpha*-dec-osf* | hppa*-hp-hpux*)
+	THREADCXXFLAGS=-pthread
+	# boehm-gc needs some functions from librt, so link that too.
+	THREADLIBS='-lpthread -lrt'
+	THREADSPEC='-lpthread -lrt'
+	;;
+     *)
+	THREADLIBS=-lpthread
+	THREADSPEC=-lpthread
+	;;
+    esac
+    THREADH=posix-threads.h
+    # MIT pthreads doesn't seem to have the mutexattr functions.
+    # But for now we don't check for it.  We just assume you aren't
+    # using MIT pthreads.
+    AC_DEFINE(HAVE_PTHREAD_MUTEXATTR_INIT, 1, [Define if using POSIX threads that have the mutexattr functions.])
+
+    # If we're using the Boehm GC, then we happen to know that it
+    # defines _REENTRANT, so we don't bother.  Eww.
+    if test "$GC" != boehm; then
+       AC_DEFINE(_REENTRANT, 1, [Required define if using POSIX threads])
+    fi
+    AC_DEFINE(_POSIX_PTHREAD_SEMANTICS, 1, [Required define if using POSIX threads])
+    ;;
+
+ win32)
+    THREADH=win32-threads.h
+    THREADCXXFLAGS=-mthreads
+    # We need thread-safe exception handling so _CRT_MT should be set to 1.
+    # But we do not want the executables created to be dependent on
+    # mingwm10.dll which provides a __mingwthr_key_dtor() that cleans up
+    # exception handling contexts.  The following kludge achieves this effect
+    # and causes a dummy __mingwthr_key_dtor() to be linked in from
+    # libmingw32.a.  This causes a memory leak of about 24 bytes per thread.
+    # A workaround is to explicitly use -mthreads while linking Java programs.
+    # See PR libgcj/28263.
+    #
+    # FIXME: In Java we are able to detect thread death at the end of
+    # Thread.run() so we should be able to clean up the exception handling
+    # contexts ourselves.
+    THREADSTARTFILESPEC='crtmt%O%s'
+    ;;
+
+ none)
+    THREADH=no-threads.h
+    ;;
+esac
+AC_CONFIG_LINKS(include/java-threads.h:include/$THREADH)
+AC_SUBST(THREADLIBS)
+AC_SUBST(THREADINCS)
+AC_SUBST(THREADDEPS)
+AC_SUBST(THREADSPEC)
+AC_SUBST(THREADSTARTFILESPEC)
+AC_SUBST(THREADLDFLAGS)
+AC_SUBST(THREADCXXFLAGS)
+AM_CONDITIONAL(USING_POSIX_THREADS, test "$THREADS" = posix)
+AM_CONDITIONAL(USING_WIN32_THREADS, test "$THREADS" = win32)
+AM_CONDITIONAL(USING_NO_THREADS, test "$THREADS" = none)
+AM_CONDITIONAL(USE_LIBGCJ_BC, test "$use_libgcj_bc" = yes)
+
+if test -d sysdep; then true; else mkdir sysdep; fi
+AC_CONFIG_LINKS(sysdep/locks.h:sysdep/$sysdeps_dir/locks.h)
+AC_CONFIG_LINKS(sysdep/backtrace.h:$fallback_backtrace_h)
+AC_CONFIG_LINKS(sysdep/descriptor.h:$descriptor_h)
+
+LIBGCJ_SPEC="%{s-bc-abi:} -lgcj"
+if test "$use_libgcj_bc" = yes; then
+  LIBGCJ_SPEC="%{s-bc-abi:-lgcj_bc;:-lgcj}"
+fi
+AC_SUBST(LIBGCJ_SPEC)
+
+HASH_SYNC_SPEC=
+# Hash synchronization is only useful with posix threads right now.
+if test "$enable_hash_synchronization" = yes && test "$THREADS" != "none"; then
+   HASH_SYNC_SPEC=-fhash-synchronization
+   AC_DEFINE(JV_HASH_SYNCHRONIZATION, 1, [Define if hash synchronization is in use])
+fi
+AC_SUBST(HASH_SYNC_SPEC)
+
+AM_CONDITIONAL(USING_GCC, test "$GCC" = yes)
+
+# We're in the tree with gcc, and need to include some of its headers.
+GCC_UNWIND_INCLUDE='-I$(multi_basedir)/./libjava/../gcc'
+
+if test "x${with_newlib}" = "xyes"; then
+   # We are being configured with a cross compiler.  AC_REPLACE_FUNCS
+   # may not work correctly, because the compiler may not be able to
+   # link executables.
+
+   # We assume newlib.  This lets us hard-code the functions we know
+   # we'll have.
+   AC_DEFINE(HAVE_MEMMOVE, 1, [Define if you have memmove.])
+   AC_DEFINE(HAVE_MEMCPY, 1, [Define if you have memcpy.])
+   AC_DEFINE(HAVE_STRERROR, 1, [Define if you have strerror.])
+   AC_DEFINE(HAVE_TIME, 1, [Define if you have time.])
+   AC_DEFINE(HAVE_GMTIME_R, 1, [Define if you have the 'gmtime_r' function])
+   AC_DEFINE(HAVE_LOCALTIME_R, 1, [Define if you have the 'localtime_r' function.])
+   AC_DEFINE(HAVE_USLEEP_DECL, 1, [Define if usleep is declared in <unistd.h>.])
+   # This is only for POSIX threads.
+   AC_DEFINE(HAVE_PTHREAD_MUTEXATTR_INIT, 1, [Define if using POSIX threads that have the mutexattr functions.])
+   # We also assume we are using gcc, which provides alloca.
+   AC_DEFINE(HAVE_ALLOCA)
+
+   # Assume we do not have getuid and friends.
+   AC_DEFINE(NO_GETUID, 1, [Define if getuid() and friends are missing.])
+   PLATFORMNET=NoNet
+else
+   AC_CHECK_FUNCS([strerror ioctl select fstat open fsync sleep opendir \
+                   gmtime_r localtime_r readdir_r getpwuid_r getcwd \
+		   access stat lstat mkdir rename rmdir unlink utime chmod readlink \
+		   nl_langinfo setlocale \
+		   inet_pton uname inet_ntoa \
+		   fork execvp getrlimit pipe sigaction ftruncate mmap \
+		   getifaddrs])
+   AC_CHECK_FUNCS(inet_aton inet_addr, break)
+   AC_CHECK_HEADERS(execinfo.h unistd.h dlfcn.h sys/resource.h)
+   # Do an additional check on dld, HP-UX for example has dladdr in libdld.sl
+   AC_CHECK_LIB(dl, dladdr, [
+       AC_DEFINE(HAVE_DLADDR, 1, [Define if you have dladdr()])], [
+       AC_CHECK_LIB(dld, dladdr, [
+       AC_DEFINE(HAVE_DLADDR, 1, [Define if you have dladdr()])])])
+
+   if test x"$cross_compiling" = x"no"; then
+     AC_CHECK_FILES(/proc/self/exe, [
+       AC_DEFINE(HAVE_PROC_SELF_EXE, 1, [Define if you have /proc/self/exe])])
+   else
+     case $host in
+     *-linux*)
+       AC_DEFINE(HAVE_PROC_SELF_EXE, 1, [Define if you have /proc/self/exe])
+       ;;
+     esac
+   fi
+
+   AM_ICONV
+   AM_LC_MESSAGES
+   AC_STRUCT_TIMEZONE
+
+   AC_CHECK_FUNCS(gethostbyname_r, [
+     AC_DEFINE(HAVE_GETHOSTBYNAME_R, 1,
+       [Define if you have the 'gethostbyname_r' function.])
+     # There are two different kinds of gethostbyname_r.
+     # We look for the one that returns `int'.
+     # Hopefully this check is robust enough.
+     AC_EGREP_HEADER(int.*gethostbyname_r, netdb.h, [
+       AC_DEFINE(GETHOSTBYNAME_R_RETURNS_INT, 1, [Define if gethostbyname_r returns 'int'.])])
+
+     case " $GCINCS " in
+     *" -D_REENTRANT "*) ;;
+     *)
+	dnl On DU4.0, gethostbyname_r is only declared with -D_REENTRANT
+	AC_CACHE_CHECK([whether gethostbyname_r declaration requires -D_REENTRANT],
+	[libjava_cv_gethostbyname_r_needs_reentrant],
+	[ AC_LANG_PUSH(C++)
+	  AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <netdb.h>]],
+	    [[gethostbyname_r("", 0, 0);]])],
+	    [libjava_cv_gethostbyname_r_needs_reentrant=no], [dnl
+		CPPFLAGS_SAVE="$CPPFLAGS"
+		CPPFLAGS="$CPPFLAGS -D_REENTRANT"
+		AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <netdb.h>]], [[gethostbyname_r("", 0, 0);]])],
+		    [libjava_cv_gethostbyname_r_needs_reentrant=yes],
+		    [libjava_cv_gethostbyname_r_needs_reentrant=fail])
+		CPPFLAGS="$CPPFLAGS_SAVE"
+	  ])
+	  AC_LANG_POP(C++)
+	])
+	if test "x$libjava_cv_gethostbyname_r_needs_reentrant" = xyes; then
+	  AC_DEFINE(_REENTRANT, 1, [Required define if using POSIX threads])
+	fi
+     ;;
+     esac
+
+     AC_CACHE_CHECK([for struct hostent_data],
+	[libjava_cv_struct_hostent_data], [dnl
+	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+#if GETHOSTBYNAME_R_NEEDS_REENTRANT && !defined(_REENTRANT)
+# define _REENTRANT 1
+#endif
+#include <netdb.h>]], [[struct hostent_data data;]])],
+	  [libjava_cv_struct_hostent_data=yes],
+	  [libjava_cv_struct_hostent_data=no])])
+     if test "x$libjava_cv_struct_hostent_data" = xyes; then
+       AC_DEFINE(HAVE_STRUCT_HOSTENT_DATA, 1,
+         [Define if struct hostent_data is defined in netdb.h])
+     fi
+   ])
+
+   # FIXME: libjava source code expects to find a prototype for
+   # gethostbyaddr_r in netdb.h.  The outer check ensures that
+   # HAVE_GETHOSTBYADDR_R will not be defined if the prototype fails
+   # to exist where expected.  (The root issue: AC_CHECK_FUNCS assumes C
+   # linkage check is enough, yet C++ code requires proper prototypes.)
+   AC_EGREP_HEADER(gethostbyaddr_r, netdb.h, [
+   AC_CHECK_FUNCS(gethostbyaddr_r, [
+     AC_DEFINE(HAVE_GETHOSTBYADDR_R, 1,
+       [Define if you have the 'gethostbyaddr_r' function.])
+     # There are two different kinds of gethostbyaddr_r.
+     # We look for the one that returns `int'.
+     # Hopefully this check is robust enough.
+     AC_EGREP_HEADER(int.*gethostbyaddr_r, netdb.h, [
+       AC_DEFINE(GETHOSTBYADDR_R_RETURNS_INT, 1,
+         [Define if gethostbyaddr_r returns 'int'.])])])])
+
+   AC_CHECK_FUNCS(gethostname, [
+     AC_DEFINE(HAVE_GETHOSTNAME, 1,
+       [Define if you have the 'gethostname' function.])
+     AC_EGREP_HEADER(gethostname, unistd.h, [
+       AC_DEFINE(HAVE_GETHOSTNAME_DECL, 1,
+         [Define if gethostname is declared in <unistd.h>.])])])
+
+   AC_CHECK_FUNCS(usleep, [
+     AC_EGREP_HEADER(usleep, unistd.h, [
+       AC_DEFINE(HAVE_USLEEP_DECL, 1,
+          [Define if usleep is declared in <unistd.h>.])])])
+
+   # Look for these functions in the thread library, but only bother
+   # if using POSIX threads.
+   if test "$THREADS" = posix; then
+      save_LIBS="$LIBS"
+      LIBS="$LIBS $THREADLIBS"
+      # Some POSIX thread systems don't have pthread_mutexattr_settype.
+      # E.g., Solaris.
+      AC_CHECK_FUNCS(pthread_mutexattr_settype pthread_mutexattr_setkind_np)
+
+      # Look for sched_yield.  Up to Solaris 2.6, it is in libposix4, since
+      # Solaris 7 the name librt is preferred.
+      AC_CHECK_FUNCS(sched_yield, , [
+	AC_CHECK_LIB(rt, sched_yield, [
+	  AC_DEFINE(HAVE_SCHED_YIELD)
+	  THREADLIBS="$THREADLIBS -lrt"
+	  THREADSPEC="$THREADSPEC -lrt"], [
+	  AC_CHECK_LIB(posix4, sched_yield, [
+	    AC_DEFINE(HAVE_SCHED_YIELD)
+	    THREADLIBS="$THREADLIBS -lposix4"
+	    THREADSPEC="$THREADSPEC -lposix4"])])])
+
+      AC_CHECK_LIB(rt, clock_gettime, [
+         AC_DEFINE(HAVE_CLOCK_GETTIME, 1, [Define if you have clock_gettime()])
+	 case "$THREADSPEC" in
+	   *-lrt*) ;;
+	   *)
+ 	     THREADSPEC="$THREADSPEC -lrt"
+	     THREADLIBS="$THREADLIBS -lrt"
+	     ;;
+	 esac])
+
+      LIBS="$save_LIBS"
+
+      # We can save a little space at runtime if the mutex has m_count
+      # or __m_count.  This is a nice hack for Linux.
+      AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <pthread.h>]], [[
+          extern pthread_mutex_t *mutex; int q = mutex->m_count;
+        ]])], AC_DEFINE(PTHREAD_MUTEX_HAVE_M_COUNT, 1,
+             [Define if pthread_mutex_t has m_count member.]), [
+	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <pthread.h>]], [[
+	    extern pthread_mutex_t *mutex; int q = mutex->__m_count;
+	  ]])], AC_DEFINE(PTHREAD_MUTEX_HAVE___M_COUNT, 1,
+            [Define if pthread_mutex_t has __m_count member.]))])
+   fi
+
+   # We require a way to get the time.
+   time_found=no
+   AC_CHECK_FUNCS(gettimeofday time ftime, time_found=yes)
+   if test "$time_found" = no; then
+      AC_MSG_ERROR([no function found to get the time])
+   fi
+
+   AC_CHECK_FUNCS(memmove)
+
+   # We require memcpy.
+   memcpy_found=no
+   AC_CHECK_FUNCS(memcpy, memcpy_found=yes)
+   if test "$memcpy_found" = no; then
+      AC_MSG_ERROR([memcpy is required])
+   fi
+   # Do an additional check on dld, HP-UX for example has dlopen in libdld.sl
+   AC_CHECK_LIB(dl, dlopen, [
+       AC_DEFINE(HAVE_DLOPEN, 1, [Define if dlopen is available])], [
+       AC_CHECK_LIB(dld, dlopen, [
+       AC_DEFINE(HAVE_DLOPEN, 1, [Define if dlopen is available])])])
+
+   # Some library-finding code we stole from Tcl.
+   #--------------------------------------------------------------------
+   #	Check for the existence of the -lsocket and -lnsl libraries.
+   #	The order here is important, so that they end up in the right
+   #	order in the command line generated by make.  Here are some
+   #	special considerations:
+   #	1. Use "connect" and "accept" to check for -lsocket, and
+   #	   "gethostbyname" to check for -lnsl.
+   #	2. Use each function name only once:  can't redo a check because
+   #	   autoconf caches the results of the last check and won't redo it.
+   #	3. Use -lnsl and -lsocket only if they supply procedures that
+   #	   aren't already present in the normal libraries.  This is because
+   #	   IRIX 5.2 has libraries, but they aren't needed and they're
+   #	   bogus:  they goof up name resolution if used.
+   #	4. On some SVR4 systems, can't use -lsocket without -lnsl too.
+   #	   To get around this problem, check for both libraries together
+   #	   if -lsocket doesn't work by itself.
+   #--------------------------------------------------------------------
+
+   AC_CACHE_CHECK([for socket libraries], gcj_cv_lib_sockets,
+    [gcj_cv_lib_sockets=
+     gcj_checkBoth=0
+     unset ac_cv_func_connect
+     AC_CHECK_FUNC(connect, gcj_checkSocket=0, gcj_checkSocket=1)
+     if test "$gcj_checkSocket" = 1; then
+	 unset ac_cv_func_connect
+	 AC_CHECK_LIB(socket, main, gcj_cv_lib_sockets="-lsocket",
+		      gcj_checkBoth=1)
+     fi
+     if test "$gcj_checkBoth" = 1; then
+	 gcj_oldLibs=$LIBS
+	 LIBS="$LIBS -lsocket -lnsl"
+	 unset ac_cv_func_accept
+	 AC_CHECK_FUNC(accept,
+		       [gcj_checkNsl=0
+			gcj_cv_lib_sockets="-lsocket -lnsl"])
+	 unset ac_cv_func_accept
+	 LIBS=$gcj_oldLibs
+     fi
+     unset ac_cv_func_gethostbyname
+     gcj_oldLibs=$LIBS
+     LIBS="$LIBS $gcj_cv_lib_sockets"
+     AC_CHECK_FUNC(gethostbyname, ,
+		   [AC_CHECK_LIB(nsl, main,
+				 [gcj_cv_lib_sockets="$gcj_cv_lib_sockets -lnsl"])])
+     unset ac_cv_func_gethostbyname
+     LIBS=$gcj_oldLIBS
+   ])
+   SYSTEMSPEC="$SYSTEMSPEC $gcj_cv_lib_sockets"
+
+   if test "$with_system_zlib" = yes; then
+      AC_CHECK_LIB(z, deflate, ZLIBSPEC=-lz, ZLIBSPEC=)
+   fi
+
+   # Test for Gtk stuff, if asked for.
+   if test "$use_gtk_awt" = yes; then
+      PKG_CHECK_MODULES(GTK, gtk+-2.0 >= 2.4)
+      AC_SUBST(GTK_CFLAGS)
+      AC_SUBST(GTK_LIBS)
+
+      PKG_CHECK_MODULES(GLIB, glib-2.0 >= 2.4 gthread-2.0 >= 2.4)
+      AC_SUBST(GLIB_CFLAGS)
+      AC_SUBST(GLIB_LIBS)
+
+      PKG_CHECK_MODULES(LIBART, libart-2.0 >= 2.1)
+      AC_SUBST(LIBART_CFLAGS)
+      AC_SUBST(LIBART_LIBS)
+
+      # We require the XTest Extension to support java.awt.Robot.
+      AC_CHECK_LIB([Xtst], [XTestQueryExtension], [true],
+		   [AC_MSG_ERROR([libXtst not found, required by java.awt.Robot])],
+		   [${X_LIBS}])
+   fi
+
+   # On Solaris, and maybe other architectures, the Boehm collector
+   # requires -ldl.
+   if test "$GC" = boehm; then
+      AC_CHECK_LIB(dl, main, SYSTEMSPEC="$SYSTEMSPEC -ldl")
+   fi
+fi
+
+# Use a semicolon as CLASSPATH separator for MinGW, otherwise a colon.
+case $build in
+    *-mingw32) CLASSPATH_SEPARATOR=';' ;;
+    *)         CLASSPATH_SEPARATOR=':' ;;
+esac
+AC_SUBST(CLASSPATH_SEPARATOR)
+
+# We must search the source tree for java.lang, since we still don't
+# have libgcj.jar nor java/lang/*.class
+GCJ_SAVE_CPPFLAGS=$CPPFLAGS
+CPPFLAGS="$CPPFLAGS -I`${PWDCMD-pwd}` -I`cd $srcdir && ${PWDCMD-pwd}`"
+
+# Since some classes depend on this one, we need its source available
+# before we can do any GCJ compilation test :-(
+if test ! -f gnu/classpath/Configuration.java; then
+  test -d gnu || mkdir gnu
+  test -d gnu/classpath || mkdir gnu/classpath
+  # Note that it is not crucial that all the values here be correct.
+  sed -e "s,@prefix@,$prefix," \
+      -e "s,@VERSION@,$VERSION," \
+      -e "s,@LIBDEBUG@,false," \
+      -e "s,@INIT_LOAD_LIBRARY@,false," \
+      -e "s,@@,$LIBGCJDEBUG," \
+      -e "s,@default_toolkit@,$TOOLKIT," \
+      -e "s,@JAVA_LANG_SYSTEM_EXPLICIT_INITIALIZATION@,false," \
+      -e "s,@GTK_CAIRO_ENABLED@,false," \
+	< $srcdir/classpath/gnu/classpath/Configuration.java.in \
+	> gnu/classpath/Configuration.java
+  # We do not want to redirect the output of the grep below to /dev/null,
+  # but we add /dev/null to the input list so that grep will print the
+  # filename of Configuration.java in case it finds any matches.
+  if grep '@.*@' gnu/classpath/Configuration.java /dev/null; then
+    AC_MSG_ERROR([configure.ac is missing the substitutions above])
+  fi
+fi
+
+LT_AC_PROG_GCJ
+
+# Now remove it.
+rm -f gnu/classpath/Configuration.java
+
+CPPFLAGS=$GCJ_SAVE_CPPFLAGS
+
+AC_CHECK_SIZEOF(void *)
+
+AC_C_BIGENDIAN
+
+ZLIBS=
+SYS_ZLIBS=
+ZINCS=
+
+if test -z "$ZLIBSPEC"; then
+   # Use zlib from the GCC tree.
+   ZINCS='-I$(top_srcdir)/../zlib'
+   ZLIBS=../zlib/libzgcj_convenience.la
+else
+   # System's zlib.
+   SYS_ZLIBS="$ZLIBSPEC"
+fi
+AC_SUBST(ZLIBS)
+AC_SUBST(SYS_ZLIBS)
+AC_SUBST(ZINCS)
+AC_SUBST(DIVIDESPEC)
+AC_SUBST(CHECKREFSPEC)
+AC_SUBST(EXCEPTIONSPEC)
+AC_SUBST(BACKTRACESPEC)
+AC_SUBST(IEEESPEC)
+
+AM_CONDITIONAL(NATIVE, test "$NATIVE" = yes)
+AM_CONDITIONAL(NEEDS_DATA_START, test "$NEEDS_DATA_START" = yes && test "$NATIVE" = yes)
+AC_SUBST(GCC_UNWIND_INCLUDE)
+
+# Process the option "--enable-version-specific-runtime-libs"
+# Calculate toolexeclibdir
+case ${version_specific_libs} in
+  yes)
+    # Need the gcc compiler version to know where to install libraries
+    # and header files if --enable-version-specific-runtime-libs option
+    # is selected.
+    includedir='$(libdir)/gcc/$(target_noncanonical)/$(gcc_version)/include/'
+    toolexecdir='$(libdir)/gcc/$(target_noncanonical)'
+    toolexecmainlibdir='$(toolexecdir)/$(gcc_version)$(MULTISUBDIR)'
+    toolexeclibdir=$toolexecmainlibdir
+    ;;
+  no)
+    if test -n "$with_cross_host" &&
+       test x"$with_cross_host" != x"no"; then
+      # Install a library built with a cross compiler in tooldir, not libdir.
+      toolexecdir='$(exec_prefix)/$(target_noncanonical)'
+      toolexecmainlibdir='$(toolexecdir)/lib'
+    else
+      toolexecdir='$(libdir)/gcc-lib/$(target_noncanonical)'
+      toolexecmainlibdir='$(libdir)'
+    fi
+    multi_os_directory=`$CC -print-multi-os-directory`
+    case $multi_os_directory in
+      .) toolexeclibdir=$toolexecmainlibdir ;; # Avoid trailing /.
+      *) toolexeclibdir=$toolexecmainlibdir/$multi_os_directory ;;
+    esac
+    ;;
+esac
+AC_SUBST(toolexecdir)
+AC_SUBST(toolexecmainlibdir)
+AC_SUBST(toolexeclibdir)
+
+# Determine where the standard .db file and GNU Classpath JNI
+# libraries are found.
+multi_os_directory=`$CC -print-multi-os-directory`
+case $multi_os_directory in
+  .)
+   dbexecdir='$(libdir)/gcj-$(gcc_version)' # Avoid /.
+   ;;
+  *)
+   dbexecdir='$(libdir)/'$multi_os_directory'/gcj-$(gcc_version)'
+   ;;
+esac
+AC_SUBST(dbexecdir)
+
+# Determine gcj version number.
+gcjversion=`$GCJ -v 2>&1 | sed -n 's/^.*version \([[^ ]]*\).*$/\1/p'`
+GCJVERSION=$gcjversion
+AC_SUBST(GCJVERSION)
+AC_DEFINE_UNQUOTED(GCJVERSION, "$GCJVERSION", [Short GCJ version ID])
+
+AC_DEFINE(JV_VERSION, "1.4.2", [Compatibility version string])
+AC_DEFINE(JV_API_VERSION, "1.4", [API compatibility version string])
+
+TL_AC_GXX_INCLUDE_DIR
+
+# We check for sys/filio.h because Solaris 2.5 defines FIONREAD there.
+# On that system, sys/ioctl.h will not include sys/filio.h unless
+# BSD_COMP is defined; just including sys/filio.h is simpler.
+# We avoid AC_HEADER_DIRENT since we really only care about dirent.h
+# for now.  If you change this, you also must update natFile.cc.
+AC_CHECK_HEADERS([unistd.h bstring.h sys/time.h sys/types.h fcntl.h \
+		  sys/ioctl.h sys/filio.h sys/stat.h sys/select.h \
+		  sys/socket.h netinet/in.h arpa/inet.h netdb.h net/if.h \
+		  pwd.h sys/config.h stdint.h langinfo.h locale.h \
+		  dirent.h sys/rw_lock.h ifaddrs.h])
+AC_CHECK_HEADERS(inttypes.h, [
+    AC_DEFINE(HAVE_INTTYPES_H, 1, [Define if <inttypes.h> is available])
+    AC_DEFINE(JV_HAVE_INTTYPES_H, 1, [Define if <inttypes.h> is available])
+])
+AC_HEADER_SYS_WAIT
+
+AC_CHECK_TYPE([ssize_t], [int])
+
+AC_MSG_CHECKING([for in_addr_t])
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
+#if STDC_HEADERS
+#include <stdlib.h>
+#include <stddef.h>
+#endif
+#if HAVE_NETINET_IN_H
+#include <netinet/in.h>
+#endif]], [[in_addr_t foo;]])],
+  [AC_DEFINE(HAVE_IN_ADDR_T, 1,
+     [Define to 1 if 'in_addr_t' is defined in sys/types.h or netinet/in.h.])
+   AC_MSG_RESULT(yes)],
+  [AC_MSG_RESULT(no)])
+
+AC_MSG_CHECKING([whether struct ip_mreq is in netinet/in.h])
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <netinet/in.h>]], [[struct ip_mreq mreq;]])],
+  [AC_DEFINE(HAVE_STRUCT_IP_MREQ, 1,
+     [Define if struct ip_mreq is defined in netinet/in.h.])
+   AC_MSG_RESULT(yes)],
+  [AC_MSG_RESULT(no)])
+
+AC_MSG_CHECKING([whether struct ipv6_mreq is in netinet/in.h])
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <netinet/in.h>]], [[struct ipv6_mreq mreq6;]])],
+  [AC_DEFINE(HAVE_STRUCT_IPV6_MREQ, 1,
+     [Define if struct ipv6_mreq is defined in netinet/in.h.])
+   AC_MSG_RESULT(yes)],
+  [AC_MSG_RESULT(no)])
+
+AC_MSG_CHECKING([whether struct sockaddr_in6 is in netinet/in.h])
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <netinet/in.h>]], [[struct sockaddr_in6 addr6;]])],
+  [AC_DEFINE(HAVE_INET6, 1,
+     [Define if inet6 structures are defined in netinet/in.h.])
+   AC_MSG_RESULT(yes)],
+  [AC_MSG_RESULT(no)])
+
+AC_MSG_CHECKING([for socklen_t in sys/socket.h])
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#define _POSIX_PII_SOCKET
+#include <sys/types.h>
+#include <sys/socket.h>]], [[socklen_t x = 5;]])],
+  [AC_DEFINE(HAVE_SOCKLEN_T, 1, [Define it socklen_t typedef is in sys/socket.h.])
+   AC_MSG_RESULT(yes)],
+  [AC_MSG_RESULT(no)])
+
+AC_MSG_CHECKING([for tm_gmtoff in struct tm])
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <time.h>]], [[struct tm tim; tim.tm_gmtoff = 0;]])],
+  [AC_DEFINE(STRUCT_TM_HAS_GMTOFF, 1, [Define if struct tm has tm_gmtoff field.])
+   AC_MSG_RESULT(yes)],
+  [AC_MSG_RESULT(no)
+   AC_MSG_CHECKING([for global timezone variable])
+   dnl FIXME: we don't want a link check here because that won't work
+   dnl when cross-compiling.  So instead we make an assumption that
+   dnl the header file will mention timezone if it exists.
+   dnl Don't find the win32 function timezone
+   AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <time.h>]], [[void i(){long z2 = 2*timezone;}]])],
+     [AC_DEFINE(HAVE_TIMEZONE, 1, [Define if global 'timezone' exists.])
+      AC_MSG_RESULT(yes)],
+     [AC_MSG_RESULT(no)
+       AC_MSG_CHECKING([for global _timezone variable])
+       dnl FIXME: As above, don't want link check
+       AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <time.h>]], [[long z2 = _timezone;]])],
+         [AC_DEFINE(HAVE_UNDERSCORE_TIMEZONE, 1,
+            [Define if your platform has the global _timezone variable.])
+          AC_MSG_RESULT(yes)],
+          [AC_MSG_RESULT(no)])])])
+
+AC_FUNC_ALLOCA
+
+AC_CHECK_PROGS(PERL, perl, false)
+
+SYSDEP_SOURCES=
+SIGNAL_HANDLER_AUX=
+
+case "${host}" in
+ i?86-*-linux*)
+    SIGNAL_HANDLER=include/i386-signal.h
+    ;;
+ sparc*-sun-solaris*)
+    SIGNAL_HANDLER=include/sparc-signal.h
+    ;;
+# ia64-*)
+#    SYSDEP_SOURCES=sysdep/ia64.c
+#    test -d sysdep || mkdir sysdep
+#    ;;
+ hppa*-*-linux*)
+    SIGNAL_HANDLER=include/pa-signal.h
+    ;;
+ hppa*-hp-hpux*)
+    SIGNAL_HANDLER=include/hppa-signal.h
+    ;;
+ ia64-*-linux*)
+    SIGNAL_HANDLER=include/dwarf2-signal.h
+    ;;
+ powerpc*-*-linux*)
+    SIGNAL_HANDLER=include/powerpc-signal.h
+    ;;
+ alpha*-*-linux*)
+    SIGNAL_HANDLER=include/dwarf2-signal.h
+    ;;
+ s390*-*-linux*)
+    SIGNAL_HANDLER=include/s390-signal.h
+    ;;
+ x86_64*-*-linux*)
+    SIGNAL_HANDLER=include/x86_64-signal.h
+    SIGNAL_HANDLER_AUX=include/i386-signal.h
+    ;;
+ sparc*-*-linux*)
+    SIGNAL_HANDLER=include/dwarf2-signal.h
+    ;;
+ sh*-*-linux*)
+    SIGNAL_HANDLER=include/sh-signal.h
+    ;;
+ *mingw*)
+    SIGNAL_HANDLER=include/win32-signal.h
+    ;;
+ mips*-*-linux*)
+    SIGNAL_HANDLER=include/mips-signal.h
+    ;;
+ powerpc*-*-darwin*)
+    SIGNAL_HANDLER=include/darwin-signal.h
+    ;;
+ *)
+    SIGNAL_HANDLER=include/default-signal.h
+    ;;
+esac
+
+# If we're using sjlj exceptions, forget what we just learned.
+if test "$enable_sjlj_exceptions" = yes; then
+   SIGNAL_HANDLER=include/default-signal.h
+   SIGNAL_HANDLER_AUX=
+fi
+
+AC_SUBST(SYSDEP_SOURCES)
+
+if test -z "$SIGNAL_HANDLER_AUX"; then
+  SIGNAL_HANDLER_AUX=$SIGNAL_HANDLER
+fi
+
+AC_CONFIG_LINKS(include/java-signal.h:$SIGNAL_HANDLER
+		include/java-signal-aux.h:$SIGNAL_HANDLER_AUX)
+
+if test "${multilib}" = "yes"; then
+  multilib_arg="--enable-multilib"
+else
+  multilib_arg=
+fi
+
+# See if we support thread-local storage.
+GCC_CHECK_TLS
+
+# For _Unwind_GetIPInfo.
+GCC_CHECK_UNWIND_GETIPINFO
+
+# Check if linker supports static linking on a per library basis
+LD_START_STATIC_SPEC=
+LD_FINISH_STATIC_SPEC=
+if $LD --help 2>&1 | grep -q -e -call_shared ; then
+  if $LD --help 2>&1 | grep -q -e -non_shared ; then
+    LD_START_STATIC_SPEC='%{static-libgcj:-non_shared}'
+    LD_FINISH_STATIC_SPEC='%{static-libgcj:-call_shared}'
+  fi
+fi
+AC_SUBST(LD_START_STATIC_SPEC)
+AC_SUBST(LD_FINISH_STATIC_SPEC)
+
+here=`${PWDCMD-pwd}`
+AC_SUBST(here)
+
+# We get this from the environment.
+AC_SUBST(GCJFLAGS)
+
+AC_CONFIG_FILES([
+Makefile
+libgcj.pc
+libgcj.spec
+libgcj-test.spec
+gcj/Makefile
+include/Makefile
+testsuite/Makefile
+])
+
+AC_CONFIG_FILES([scripts/jar], [chmod +x scripts/jar])
+
+AC_CONFIG_COMMANDS([default],
+[# Only add multilib support code if we just rebuilt top-level Makefile.
+case " $CONFIG_FILES " in
+ *" Makefile "*)
+   LD="${ORIGINAL_LD_FOR_MULTILIBS}"
+   ac_file=Makefile . ${multi_basedir}/./libjava/../config-ml.in
+   ;;
+esac
+for ac_multi_file in $CONFIG_FILES; do
+  case $ac_multi_file in
+  */Makefile)
+    grep "^MULTI[[^ ]]* =" Makefile >> "$ac_multi_file" ;;
+  esac
+done
+],
+srcdir=${srcdir}
+host=${host}
+target=${target}
+with_multisubdir=${with_multisubdir}
+ac_configure_args="${multilib_arg} ${ac_configure_args}"
+CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
+multi_basedir=${multi_basedir}
+CC="${CC}"
+CXX="${CXX}"
+ORIGINAL_LD_FOR_MULTILIBS="${ORIGINAL_LD_FOR_MULTILIBS}"
+)
+
+AC_OUTPUT