configure.ac (libjava_cv_anon_version_script): New test.

	* configure.ac (libjava_cv_anon_version_script): New test.
	(ANONVERSCRIPT): New AM_CONDITIONAL.
	* configure: Rebuilt.
	* Makefile.am (extra_ldflags_libjava): Link with -Wl,--version-script
	if ANONVERSCRIPT.
	* Makefile.in: Rebuilt.
	(libgcj_la_DEPENDENCIES): Depend on libgcj.ver.
	* libgcj.ver: New file.

From-SVN: r121499

6 files changed, 151 insertions, 27 deletions

diff --git a/libjava/ChangeLog b/libjava/ChangeLog
index 23d2a52..cf997ac 100644
--- a/libjava/ChangeLog
+++ b/libjava/ChangeLog
@@ -1,3 +1,14 @@
+2007-02-02  Jakub Jelinek  <jakub@redhat.com>
+
+	* configure.ac (libjava_cv_anon_version_script): New test.
+	(ANONVERSCRIPT): New AM_CONDITIONAL.
+	* configure: Rebuilt.
+	* Makefile.am (extra_ldflags_libjava): Link with -Wl,--version-script
+	if ANONVERSCRIPT.
+	* Makefile.in: Rebuilt.
+	(libgcj_la_DEPENDENCIES): Depend on libgcj.ver.
+	* libgcj.ver: New file.
+
 2007-02-01  David Daney  <ddaney@avtrex.com>
 
 	* scripts/makemake.tcl: Replace gnu/xml build with build of all
diff --git a/libjava/Makefile.am b/libjava/Makefile.am
index 0b653a8..0e7d91a 100644
--- a/libjava/Makefile.am
+++ b/libjava/Makefile.am
@@ -101,6 +101,10 @@ GCJ_WITH_FLAGS = $(GCJ) --encoding=UTF-8 -Wno-deprecated
 
 extra_ldflags_libjava = @extra_ldflags_libjava@
 
+if ANONVERSCRIPT
+extra_ldflags_libjava += -Wl,--version-script=$(srcdir)/libgcj.ver
+endif
+
 GCJLINK = $(LIBTOOL) --tag=GCJ --mode=link $(GCJ) -L$(here) $(JC1FLAGS) \
           $(LDFLAGS) -o $@
 GCJ_FOR_ECJX = @GCJ_FOR_ECJX@
@@ -246,6 +250,9 @@ libgcj_la_DEPENDENCIES = libgcj-$(gcc_version).jar \
 	java/process-$(PLATFORM).lo \
 	$(all_packages_source_files:.list=.lo) \
 	$(LIBLTDL) $(libgcj_la_LIBADD)
+if ANONVERSCRIPT
+libgcj_la_DEPENDENCIES += $(srcdir)/libgcj.ver
+endif
 libgcj_la_LINK = $(LIBLINK)
 
 ## A hack to make sure the various gcj-related macros, like
diff --git a/libjava/Makefile.in b/libjava/Makefile.in
index d655387..59b85a9 100644
--- a/libjava/Makefile.in
+++ b/libjava/Makefile.in
@@ -53,15 +53,17 @@ target_triplet = @target@
 @NATIVE_TRUE@	grmid$(EXEEXT) gserialver$(EXEEXT) \
 @NATIVE_TRUE@	gtnameserv$(EXEEXT)
 @BUILD_ECJ1_TRUE@libexecsub_PROGRAMS = ecjx$(EXEEXT)
-@USING_GCC_TRUE@am__append_5 = $(WARNINGS)
-@USING_BOEHMGC_TRUE@am__append_6 = boehm.cc
-@USING_NOGC_TRUE@am__append_7 = nogc.cc
-@USING_POSIX_PLATFORM_TRUE@am__append_8 = posix.cc
-@USING_WIN32_PLATFORM_TRUE@am__append_9 = win32.cc
-@USING_DARWIN_CRT_TRUE@am__append_10 = darwin.cc
-@USING_POSIX_THREADS_TRUE@am__append_11 = posix-threads.cc
-@USING_WIN32_THREADS_TRUE@am__append_12 = win32-threads.cc
-@USING_NO_THREADS_TRUE@am__append_13 = no-threads.cc
+@ANONVERSCRIPT_TRUE@am__append_5 = -Wl,--version-script=$(srcdir)/libgcj.ver
+@USING_GCC_TRUE@am__append_6 = $(WARNINGS)
+@USING_BOEHMGC_TRUE@am__append_7 = boehm.cc
+@USING_NOGC_TRUE@am__append_8 = nogc.cc
+@USING_POSIX_PLATFORM_TRUE@am__append_9 = posix.cc
+@USING_WIN32_PLATFORM_TRUE@am__append_10 = win32.cc
+@USING_DARWIN_CRT_TRUE@am__append_11 = darwin.cc
+@USING_POSIX_THREADS_TRUE@am__append_12 = posix-threads.cc
+@USING_WIN32_THREADS_TRUE@am__append_13 = win32-threads.cc
+@USING_NO_THREADS_TRUE@am__append_14 = no-threads.cc
+@ANONVERSCRIPT_TRUE@am__append_15 = $(srcdir)/libgcj.ver
 DIST_COMMON = README $(am__configure_deps) $(srcdir)/../compile \
 	$(srcdir)/../config.guess $(srcdir)/../config.sub \
 	$(srcdir)/../depcomp $(srcdir)/../install-sh \
@@ -73,8 +75,8 @@ DIST_COMMON = README $(am__configure_deps) $(srcdir)/../compile \
 	$(top_srcdir)/scripts/jar.in COPYING ChangeLog NEWS THANKS
 @MAINTAINER_MODE_TRUE@@NATIVE_TRUE@noinst_PROGRAMS =  \
 @MAINTAINER_MODE_TRUE@@NATIVE_TRUE@	gen-from-JIS$(EXEEXT)
-@NATIVE_TRUE@@USE_LIBGCJ_BC_TRUE@am__append_14 = libgcj_bc.la
-@XLIB_AWT_TRUE@am__append_15 = $(xlib_nat_headers)
+@NATIVE_TRUE@@USE_LIBGCJ_BC_TRUE@am__append_16 = libgcj_bc.la
+@XLIB_AWT_TRUE@am__append_17 = $(xlib_nat_headers)
 subdir = .
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/../config/acx.m4 \
@@ -545,6 +547,8 @@ ALLOCA = @ALLOCA@
 AMDEP_FALSE = @AMDEP_FALSE@
 AMDEP_TRUE = @AMDEP_TRUE@
 AMTAR = @AMTAR@
+ANONVERSCRIPT_FALSE = @ANONVERSCRIPT_FALSE@
+ANONVERSCRIPT_TRUE = @ANONVERSCRIPT_TRUE@
 AR = @AR@
 AS = @AS@
 AUTOCONF = @AUTOCONF@
@@ -738,7 +742,7 @@ build_vendor = @build_vendor@
 datadir = @datadir@
 dbexecdir = @dbexecdir@
 exec_prefix = @exec_prefix@
-extra_ldflags_libjava = @extra_ldflags_libjava@
+extra_ldflags_libjava = @extra_ldflags_libjava@ $(am__append_5)
 gxx_include_dir = @gxx_include_dir@
 here = @here@
 host = @host@
@@ -849,7 +853,7 @@ AM_GCJFLAGS = \
 	--encoding=UTF-8 \
 	-Wno-deprecated -fbootstrap-classes
 
-AM_CFLAGS = @LIBGCJ_CFLAGS@ $(am__append_5)
+AM_CFLAGS = @LIBGCJ_CFLAGS@ $(am__append_6)
 PEDANTIC_CFLAGS = -ansi -pedantic -Wall -Wno-long-long
 JCFLAGS = -g
 JC1FLAGS = @LIBGCJ_JAVAFLAGS@ $(GCJFLAGS)
@@ -870,9 +874,9 @@ libgij_la_LDFLAGS = -rpath $(toolexeclibdir) \
 
 libgcj_la_SOURCES = prims.cc jni.cc jvmti.cc exception.cc \
 	stacktrace.cc link.cc defineclass.cc interpret.cc verify.cc \
-	$(nat_source_files) $(am__append_6) $(am__append_7) \
-	$(am__append_8) $(am__append_9) $(am__append_10) \
-	$(am__append_11) $(am__append_12) $(am__append_13)
+	$(nat_source_files) $(am__append_7) $(am__append_8) \
+	$(am__append_9) $(am__append_10) $(am__append_11) \
+	$(am__append_12) $(am__append_13) $(am__append_14)
 nat_files = $(nat_source_files:.cc=.lo)
 xlib_nat_files = $(xlib_nat_source_files:.cc=.lo)
 
@@ -893,13 +897,10 @@ libgcj_la_LIBADD = \
 	$(propertyo_files) \
 	$(LIBFFI) $(ZLIBS) $(GCLIBS)
 
-libgcj_la_DEPENDENCIES = libgcj-$(gcc_version).jar \
-	java/lang/Object.lo \
-	java/lang/Class.lo \
-	java/process-$(PLATFORM).lo \
-	$(all_packages_source_files:.list=.lo) \
-	$(LIBLTDL) $(libgcj_la_LIBADD)
-
+libgcj_la_DEPENDENCIES = libgcj-$(gcc_version).jar java/lang/Object.lo \
+	java/lang/Class.lo java/process-$(PLATFORM).lo \
+	$(all_packages_source_files:.list=.lo) $(LIBLTDL) \
+	$(libgcj_la_LIBADD) $(am__append_15)
 libgcj_la_LINK = $(LIBLINK)
 EXTRA_libgcj_la_SOURCES = java/lang/Object.java
 libgcj_tools_la_SOURCES = classpath/tools/tools.zip
@@ -7836,7 +7837,7 @@ ECJX_BASE_FLAGS = -findirect-dispatch \
 @NATIVE_TRUE@ecjx_LDADD = -L$(here)/.libs libgcj.la
 @NATIVE_FALSE@ecjx_DEPENDENCIES = 
 @NATIVE_TRUE@ecjx_DEPENDENCIES = libgcj.la libgcj.spec \
-@NATIVE_TRUE@	$(am__append_14)
+@NATIVE_TRUE@	$(am__append_16)
 gappletviewer_SOURCES = 
 gappletviewer_LDFLAGS = --main=gnu.classpath.tools.appletviewer.Main \
 	-rpath $(toolexeclibdir) -shared-libgcc $(THREADLDFLAGS)
@@ -8027,7 +8028,7 @@ gnu/gcj/xlib/natXImage.cc \
 gnu/gcj/xlib/natXUnmapEvent.cc
 
 sourcesdir = $(jardir)
-headers_to_make = $(nat_headers) $(am__append_15)
+headers_to_make = $(nat_headers) $(am__append_17)
 
 # Work around what appears to be a GNU make bug handling MAKEFLAGS
 # values defined in terms of make variables, as is the case for CC and
diff --git a/libjava/configure b/libjava/configure
index 31c43db..c879e57 100755
--- a/libjava/configure
+++ b/libjava/configure
@@ -310,7 +310,7 @@ ac_includes_default="\
 # include <unistd.h>
 #endif"
 
-ac_subst_vars='SHELL PATH_SEPARATOR PACKAGE_NAME PACKAGE_TARNAME PACKAGE_VERSION PACKAGE_STRING PACKAGE_BUGREPORT exec_prefix prefix program_transform_name bindir sbindir libexecdir datadir sysconfdir sharedstatedir localstatedir libdir includedir oldincludedir infodir mandir build_alias host_alias target_alias DEFS ECHO_C ECHO_N ECHO_T LIBS build build_cpu build_vendor build_os build_libsubdir build_subdir host_subdir target_subdir multi_basedir host host_cpu host_vendor host_os target target_cpu target_vendor target_os target_noncanonical LN_S mkinstalldirs JAVA_MAINTAINER_MODE_TRUE JAVA_MAINTAINER_MODE_FALSE CC ac_ct_CC EXEEXT OBJEXT CXX ac_ct_CXX CFLAGS CXXFLAGS LDFLAGS INSTALL_PROGRAM INSTALL_SCRIPT INSTALL_DATA CYGPATH_W PACKAGE VERSION ACLOCAL AUTOCONF AUTOMAKE AUTOHEADER MAKEINFO install_sh STRIP ac_ct_STRIP INSTALL_STRIP_PROGRAM mkdir_p AWK SET_MAKE am__leading_dot AMTAR am__tar am__untar DEPDIR am__include am__quote AMDEP_TRUE AMDEP_FALSE AMDEPBACKSLASH CCDEPMODE am__fastdepCC_TRUE am__fastdepCC_FALSE CXXDEPMODE am__fastdepCXX_TRUE am__fastdepCXX_FALSE AS ac_ct_AS LD ac_ct_LD AR ac_ct_AR RANLIB ac_ct_RANLIB JAR ZIP UNZIP MAINTAINER_MODE_TRUE MAINTAINER_MODE_FALSE MAINT LIBGCJ_CFLAGS LIBGCJ_CXXFLAGS LIBGCJ_JAVAFLAGS LIBGCJ_LD_SYMBOLIC LIBGCJ_LD_SYMBOLIC_FUNCTIONS LIBGCJDEBUG TOOLKIT XLIB_AWT_TRUE XLIB_AWT_FALSE X_AWT_TRUE X_AWT_FALSE GCJ_FOR_ECJX GCJH host_exeext INCLTDL LIBLTDL DIRLTDL LIBTOOL CXXCPP CPPFLAGS GCJ GCJFLAGS GCJDEPMODE am__fastdepGCJ_TRUE am__fastdepGCJ_FALSE subdirs TESTSUBDIR_TRUE TESTSUBDIR_FALSE ECJ_BUILD_JAR ECJ_JAR BUILD_ECJ1_TRUE BUILD_ECJ1_FALSE INSTALL_ECJ_JAR_TRUE INSTALL_ECJ_JAR_FALSE JAVA_HOME_SET_TRUE JAVA_HOME_SET_FALSE JAVA_HOME INTERPRETER LIBFFI LIBFFIINCS PLATFORM CPP EGREP USING_WIN32_PLATFORM_TRUE USING_WIN32_PLATFORM_FALSE USING_POSIX_PLATFORM_TRUE USING_POSIX_PLATFORM_FALSE USING_DARWIN_CRT_TRUE USING_DARWIN_CRT_FALSE SYSTEMSPEC LIBGCJTESTSPEC ZLIBSPEC ZLIBTESTSPEC X_CFLAGS X_PRE_LIBS X_LIBS X_EXTRA_LIBS extra_ldflags_libjava GCLIBS GCINCS GCDEPS GCSPEC JC1GCSPEC GCTESTSPEC USING_BOEHMGC_TRUE USING_BOEHMGC_FALSE USING_NOGC_TRUE USING_NOGC_FALSE THREADLIBS THREADINCS THREADDEPS THREADSPEC THREADSTARTFILESPEC THREADLDFLAGS THREADCXXFLAGS USING_POSIX_THREADS_TRUE USING_POSIX_THREADS_FALSE USING_WIN32_THREADS_TRUE USING_WIN32_THREADS_FALSE USING_NO_THREADS_TRUE USING_NO_THREADS_FALSE USE_LIBGCJ_BC_TRUE USE_LIBGCJ_BC_FALSE LIBGCJ_SPEC HASH_SYNC_SPEC USING_GCC_TRUE USING_GCC_FALSE LIBICONV LTLIBICONV PKG_CONFIG GTK_CFLAGS GTK_LIBS GLIB_CFLAGS GLIB_LIBS LIBART_CFLAGS LIBART_LIBS CLASSPATH_SEPARATOR ac_ct_GCJ ZLIBS SYS_ZLIBS ZINCS DIVIDESPEC CHECKREFSPEC EXCEPTIONSPEC BACKTRACESPEC IEEESPEC NATIVE_TRUE NATIVE_FALSE ENABLE_SHARED_TRUE ENABLE_SHARED_FALSE NEEDS_DATA_START_TRUE NEEDS_DATA_START_FALSE GCC_UNWIND_INCLUDE toolexecdir toolexecmainlibdir toolexeclibdir dbexecdir GCJVERSION gxx_include_dir libstdcxx_incdir ALLOCA PERL SYSDEP_SOURCES LD_START_STATIC_SPEC LD_FINISH_STATIC_SPEC here LIBOBJS LTLIBOBJS'
+ac_subst_vars='SHELL PATH_SEPARATOR PACKAGE_NAME PACKAGE_TARNAME PACKAGE_VERSION PACKAGE_STRING PACKAGE_BUGREPORT exec_prefix prefix program_transform_name bindir sbindir libexecdir datadir sysconfdir sharedstatedir localstatedir libdir includedir oldincludedir infodir mandir build_alias host_alias target_alias DEFS ECHO_C ECHO_N ECHO_T LIBS build build_cpu build_vendor build_os build_libsubdir build_subdir host_subdir target_subdir multi_basedir host host_cpu host_vendor host_os target target_cpu target_vendor target_os target_noncanonical LN_S mkinstalldirs JAVA_MAINTAINER_MODE_TRUE JAVA_MAINTAINER_MODE_FALSE CC ac_ct_CC EXEEXT OBJEXT CXX ac_ct_CXX CFLAGS CXXFLAGS LDFLAGS INSTALL_PROGRAM INSTALL_SCRIPT INSTALL_DATA CYGPATH_W PACKAGE VERSION ACLOCAL AUTOCONF AUTOMAKE AUTOHEADER MAKEINFO install_sh STRIP ac_ct_STRIP INSTALL_STRIP_PROGRAM mkdir_p AWK SET_MAKE am__leading_dot AMTAR am__tar am__untar DEPDIR am__include am__quote AMDEP_TRUE AMDEP_FALSE AMDEPBACKSLASH CCDEPMODE am__fastdepCC_TRUE am__fastdepCC_FALSE CXXDEPMODE am__fastdepCXX_TRUE am__fastdepCXX_FALSE AS ac_ct_AS LD ac_ct_LD AR ac_ct_AR RANLIB ac_ct_RANLIB JAR ZIP UNZIP MAINTAINER_MODE_TRUE MAINTAINER_MODE_FALSE MAINT LIBGCJ_CFLAGS LIBGCJ_CXXFLAGS LIBGCJ_JAVAFLAGS LIBGCJ_LD_SYMBOLIC LIBGCJ_LD_SYMBOLIC_FUNCTIONS LIBGCJDEBUG TOOLKIT XLIB_AWT_TRUE XLIB_AWT_FALSE X_AWT_TRUE X_AWT_FALSE GCJ_FOR_ECJX GCJH host_exeext INCLTDL LIBLTDL DIRLTDL LIBTOOL CXXCPP CPPFLAGS GCJ GCJFLAGS GCJDEPMODE am__fastdepGCJ_TRUE am__fastdepGCJ_FALSE subdirs TESTSUBDIR_TRUE TESTSUBDIR_FALSE ECJ_BUILD_JAR ECJ_JAR BUILD_ECJ1_TRUE BUILD_ECJ1_FALSE INSTALL_ECJ_JAR_TRUE INSTALL_ECJ_JAR_FALSE JAVA_HOME_SET_TRUE JAVA_HOME_SET_FALSE JAVA_HOME INTERPRETER LIBFFI LIBFFIINCS PLATFORM CPP EGREP USING_WIN32_PLATFORM_TRUE USING_WIN32_PLATFORM_FALSE USING_POSIX_PLATFORM_TRUE USING_POSIX_PLATFORM_FALSE USING_DARWIN_CRT_TRUE USING_DARWIN_CRT_FALSE SYSTEMSPEC LIBGCJTESTSPEC ZLIBSPEC ZLIBTESTSPEC X_CFLAGS X_PRE_LIBS X_LIBS X_EXTRA_LIBS extra_ldflags_libjava GCLIBS GCINCS GCDEPS GCSPEC JC1GCSPEC GCTESTSPEC USING_BOEHMGC_TRUE USING_BOEHMGC_FALSE USING_NOGC_TRUE USING_NOGC_FALSE THREADLIBS THREADINCS THREADDEPS THREADSPEC THREADSTARTFILESPEC THREADLDFLAGS THREADCXXFLAGS USING_POSIX_THREADS_TRUE USING_POSIX_THREADS_FALSE USING_WIN32_THREADS_TRUE USING_WIN32_THREADS_FALSE USING_NO_THREADS_TRUE USING_NO_THREADS_FALSE USE_LIBGCJ_BC_TRUE USE_LIBGCJ_BC_FALSE LIBGCJ_SPEC HASH_SYNC_SPEC USING_GCC_TRUE USING_GCC_FALSE LIBICONV LTLIBICONV PKG_CONFIG GTK_CFLAGS GTK_LIBS GLIB_CFLAGS GLIB_LIBS LIBART_CFLAGS LIBART_LIBS CLASSPATH_SEPARATOR ac_ct_GCJ ZLIBS SYS_ZLIBS ZINCS DIVIDESPEC CHECKREFSPEC EXCEPTIONSPEC BACKTRACESPEC IEEESPEC NATIVE_TRUE NATIVE_FALSE ENABLE_SHARED_TRUE ENABLE_SHARED_FALSE NEEDS_DATA_START_TRUE NEEDS_DATA_START_FALSE GCC_UNWIND_INCLUDE toolexecdir toolexecmainlibdir toolexeclibdir dbexecdir GCJVERSION gxx_include_dir libstdcxx_incdir ALLOCA PERL SYSDEP_SOURCES ANONVERSCRIPT_TRUE ANONVERSCRIPT_FALSE LD_START_STATIC_SPEC LD_FINISH_STATIC_SPEC here LIBOBJS LTLIBOBJS'
 ac_subst_files=''
 
 # Initialize some variables set by options.
@@ -7868,7 +7868,7 @@ if test "$ac_x_libraries" = no; then
   # See if we find them without any special options.
   # Don't add to $LIBS permanently.
   ac_save_LIBS=$LIBS
-  LIBS="-lXt $LIBS"
+  LIBS="-lX11 $LIBS"
   if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
@@ -17054,6 +17054,82 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
 
 
+# See if linker supports anonymous version scripts.
+echo "$as_me:$LINENO: checking whether ld supports anonymous version scripts" >&5
+echo $ECHO_N "checking whether ld supports anonymous version scripts... $ECHO_C" >&6
+if test "${libjava_cv_anon_version_script+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  save_CFLAGS="$CFLAGS"; save_LDFLAGS="$LDFLAGS"
+   libjava_cv_anon_version_script=no
+   CFLAGS="$CFLAGS -fPIC"; LDFLAGS="$LDFLAGS -shared -Wl,--version-script,conftest.map"
+   echo '{ global: globalsymb*; local: *; };' > conftest.map
+   if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+void globalsymbol (void) {} void localsymbol (void) {}
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  libjava_cv_anon_version_script=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+   CFLAGS="$save_CFLAGS"; LDFLAGS="$save_LDFLAGS"
+
+fi
+echo "$as_me:$LINENO: result: $libjava_cv_anon_version_script" >&5
+echo "${ECHO_T}$libjava_cv_anon_version_script" >&6
+
+
+if test "$libjava_cv_anon_version_script" = yes; then
+  ANONVERSCRIPT_TRUE=
+  ANONVERSCRIPT_FALSE='#'
+else
+  ANONVERSCRIPT_TRUE='#'
+  ANONVERSCRIPT_FALSE=
+fi
+
+
 # Check if linker supports static linking on a per library basis
 LD_START_STATIC_SPEC=
 LD_FINISH_STATIC_SPEC=
@@ -17347,6 +17423,13 @@ echo "$as_me: error: conditional \"NEEDS_DATA_START\" was never defined.
 Usually this means the macro was only invoked conditionally." >&2;}
    { (exit 1); exit 1; }; }
 fi
+if test -z "${ANONVERSCRIPT_TRUE}" && test -z "${ANONVERSCRIPT_FALSE}"; then
+  { { echo "$as_me:$LINENO: error: conditional \"ANONVERSCRIPT\" was never defined.
+Usually this means the macro was only invoked conditionally." >&5
+echo "$as_me: error: conditional \"ANONVERSCRIPT\" was never defined.
+Usually this means the macro was only invoked conditionally." >&2;}
+   { (exit 1); exit 1; }; }
+fi
 
 : ${CONFIG_STATUS=./config.status}
 ac_clean_files_save=$ac_clean_files
@@ -18134,6 +18217,8 @@ s,@libstdcxx_incdir@,$libstdcxx_incdir,;t t
 s,@ALLOCA@,$ALLOCA,;t t
 s,@PERL@,$PERL,;t t
 s,@SYSDEP_SOURCES@,$SYSDEP_SOURCES,;t t
+s,@ANONVERSCRIPT_TRUE@,$ANONVERSCRIPT_TRUE,;t t
+s,@ANONVERSCRIPT_FALSE@,$ANONVERSCRIPT_FALSE,;t t
 s,@LD_START_STATIC_SPEC@,$LD_START_STATIC_SPEC,;t t
 s,@LD_FINISH_STATIC_SPEC@,$LD_FINISH_STATIC_SPEC,;t t
 s,@here@,$here,;t t
diff --git a/libjava/configure.ac b/libjava/configure.ac
index ab637d4..95d8cef 100644
--- a/libjava/configure.ac
+++ b/libjava/configure.ac
@@ -1553,6 +1553,19 @@ GCC_CHECK_TLS
 # For _Unwind_GetIPInfo.
 GCC_CHECK_UNWIND_GETIPINFO
 
+# See if linker supports anonymous version scripts.
+AC_CACHE_CHECK([whether ld supports anonymous version scripts],
+  [libjava_cv_anon_version_script],
+  [save_CFLAGS="$CFLAGS"; save_LDFLAGS="$LDFLAGS"
+   libjava_cv_anon_version_script=no
+   CFLAGS="$CFLAGS -fPIC"; LDFLAGS="$LDFLAGS -shared -Wl,--version-script,conftest.map"
+   echo '{ global: globalsymb*; local: *; };' > conftest.map
+   AC_TRY_LINK(void globalsymbol (void) {} void localsymbol (void) {},,
+	       [libjava_cv_anon_version_script=yes], [])
+   CFLAGS="$save_CFLAGS"; LDFLAGS="$save_LDFLAGS"
+  ])
+AM_CONDITIONAL(ANONVERSCRIPT, test "$libjava_cv_anon_version_script" = yes)
+
 # Check if linker supports static linking on a per library basis
 LD_START_STATIC_SPEC=
 LD_FINISH_STATIC_SPEC=
diff --git a/libjava/libgcj.ver b/libjava/libgcj.ver
new file mode 100644
index 0000000..344600c
--- /dev/null
+++ b/libjava/libgcj.ver
@@ -0,0 +1,7 @@
+# Anonymous GNU ld version script to hide boehm-gc, libffi and fdlibm
+# symbols in libgcj.so.
+
+{
+  global: Jv*; _Jv_*; __gcj_personality_v0; _Z*;
+  local: *;
+};