2008-08-31 Aaron W. LaFramboise <aaronavay62@aaronwl.com>

	<toplevel>
	* configure.ac (RPATH_ENVVAR): Use PATH on Windows.
	(GCC_SHLIB_SUBDIR): New.
	* Makefile.tpl (HOST_LIB_PATH_gcc): Use GCC_SHLIB_SUBDIR.
	* configure: Regenerate.
	* Makefile.in: Regenerate.

	<gcc>
	* mkmap-flat.awk: Add option pe_dll.
	* config/i386/t-cygming (SHLIB_LINK): Support building libgcc_s.
	* gcc/config/i386/t-cygwin (SHLIB_LC): Add.
	* gcc/config/i386/t-mingw32 (SHLIB_LC): Add.
	* config/i386/mingw32.h (SHARED_LIBGCC_UNDEFS_SPEC): New.
	(SUBTARGET_EXTRA_SPECS): Use SHARED_LIBGCC_UNDEFS_SPEC.
	(LINK_SPEC): Support libgcc_s.
	(LIBGCC_SPEC): Support libgcc_s.
	(LIBGCC_SONAME): New.

	<libstdc++-v3>
	* acinclude.m4 <enable_symvers>: Don't use symvers on Windows.
	* configure: Regenerated.
	* Makefile.in: Regenerated.
	* src/Makefile.in: Regenerated.
	* doc/makefile.in: Regenerated.
	* po/Makefile.in: Regenerated.
	* libmath/Makefile.in: Regenerated.
	* include/Makefile.in: Regenerated.
	* libsupc++/Makefile.in: Regenerated.
	* testsuite/makefile.in: Regenerated.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@139837 138bc75d-0d04-0410-961f-82ee72b054a4

22 files changed, 178 insertions, 10 deletions

diff --git a/ChangeLog b/ChangeLog
index 8afe2f8111e..67175b8c8cc 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,11 @@
+2008-08-31  Aaron W. LaFramboise  <aaronavay62@aaronwl.com>
+
+	* configure.ac (RPATH_ENVVAR): Use PATH on Windows.
+	(GCC_SHLIB_SUBDIR): New.
+	* Makefile.tpl (HOST_LIB_PATH_gcc): Use GCC_SHLIB_SUBDIR.
+	* configure: Regenerate.
+	* Makefile.in: Regenerate.
+
 2008-08-30  Gerald Pfeifer  <gerald@pfeifer.com>
 
 	* MAINTAINERS: Consistently use tabs to separate columns.
diff --git a/Makefile.in b/Makefile.in
index 2ede05810ee..0305d28c938 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -105,6 +105,11 @@ GDB_NLM_DEPS =
 # the libraries.
 RPATH_ENVVAR = @RPATH_ENVVAR@
 
+# On targets where RPATH_ENVVAR is PATH, a subdirectory of the GCC build path
+# is used instead of the directory itself to avoid including built
+# executables in PATH.
+GCC_SHLIB_SUBDIR = @GCC_SHLIB_SUBDIR@
+
 # Build programs are put under this directory.
 BUILD_SUBDIR = @build_subdir@
 # This is set by the configure script to the arguments to use when configuring
@@ -445,7 +450,7 @@ HOST_LIB_PATH = $(HOST_LIB_PATH_bfd)$(HOST_LIB_PATH_opcodes)$(HOST_LIB_PATH_gmp)
 
 # Define HOST_LIB_PATH_gcc here, for the sake of TARGET_LIB_PATH, ouch
 @if gcc
-HOST_LIB_PATH_gcc = $$r/$(HOST_SUBDIR)/gcc:$$r/$(HOST_SUBDIR)/prev-gcc:
+HOST_LIB_PATH_gcc = $$r/$(HOST_SUBDIR)/gcc$(GCC_SHLIB_SUBDIR):$$r/$(HOST_SUBDIR)/prev-gcc$(GCC_SHLIB_SUBDIR):
 @endif gcc
 
 
diff --git a/Makefile.tpl b/Makefile.tpl
index a9dfd3e2af4..051703eaa88 100644
--- a/Makefile.tpl
+++ b/Makefile.tpl
@@ -108,6 +108,11 @@ GDB_NLM_DEPS =
 # the libraries.
 RPATH_ENVVAR = @RPATH_ENVVAR@
 
+# On targets where RPATH_ENVVAR is PATH, a subdirectory of the GCC build path
+# is used instead of the directory itself to avoid including built
+# executables in PATH.
+GCC_SHLIB_SUBDIR = @GCC_SHLIB_SUBDIR@
+
 # Build programs are put under this directory.
 BUILD_SUBDIR = @build_subdir@
 # This is set by the configure script to the arguments to use when configuring
@@ -440,7 +445,7 @@ HOST_LIB_PATH = [+ FOR host_modules +][+
 
 # Define HOST_LIB_PATH_gcc here, for the sake of TARGET_LIB_PATH, ouch
 @if gcc
-HOST_LIB_PATH_gcc = $$r/$(HOST_SUBDIR)/gcc:$$r/$(HOST_SUBDIR)/prev-gcc:
+HOST_LIB_PATH_gcc = $$r/$(HOST_SUBDIR)/gcc$(GCC_SHLIB_SUBDIR):$$r/$(HOST_SUBDIR)/prev-gcc$(GCC_SHLIB_SUBDIR):
 @endif gcc
 
 [+ FOR host_modules +][+ IF lib_path +]
diff --git a/configure b/configure
index 59d190d3716..1a2bbbca0cc 100755
--- a/configure
+++ b/configure
@@ -272,7 +272,7 @@ PACKAGE_STRING=
 PACKAGE_BUGREPORT=
 
 ac_unique_file="move-if-change"
-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 TOPLEVEL_CONFIGURE_ARGUMENTS build build_cpu build_vendor build_os build_noncanonical host_noncanonical target_noncanonical host host_cpu host_vendor host_os target target_cpu target_vendor target_os INSTALL_PROGRAM INSTALL_SCRIPT INSTALL_DATA LN LN_S build_libsubdir build_subdir host_subdir target_subdir CC CFLAGS LDFLAGS CPPFLAGS ac_ct_CC EXEEXT OBJEXT CXX CXXFLAGS ac_ct_CXX GNATBIND ac_ct_GNATBIND GNATMAKE ac_ct_GNATMAKE do_compare gmplibs gmpinc stage1_languages SYSROOT_CFLAGS_FOR_TARGET DEBUG_PREFIX_CFLAGS_FOR_TARGET CFLAGS_FOR_TARGET CXXFLAGS_FOR_TARGET RPATH_ENVVAR tooldir build_tooldir CONFIGURE_GDB_TK GDB_TK INSTALL_GDB_TK build_configargs build_configdirs host_configargs configdirs target_configargs AR_FOR_BUILD AS_FOR_BUILD CC_FOR_BUILD CFLAGS_FOR_BUILD CXXFLAGS_FOR_BUILD CXX_FOR_BUILD DLLTOOL_FOR_BUILD GCJ_FOR_BUILD GFORTRAN_FOR_BUILD LDFLAGS_FOR_BUILD LD_FOR_BUILD NM_FOR_BUILD RANLIB_FOR_BUILD WINDMC_FOR_BUILD WINDRES_FOR_BUILD config_shell YACC BISON M4 LEX FLEX MAKEINFO EXPECT RUNTEST AR AS DLLTOOL LD LIPO NM RANLIB STRIP WINDRES WINDMC OBJCOPY OBJDUMP CC_FOR_TARGET CXX_FOR_TARGET GCC_FOR_TARGET GCJ_FOR_TARGET GFORTRAN_FOR_TARGET AR_FOR_TARGET AS_FOR_TARGET DLLTOOL_FOR_TARGET LD_FOR_TARGET LIPO_FOR_TARGET NM_FOR_TARGET OBJDUMP_FOR_TARGET RANLIB_FOR_TARGET STRIP_FOR_TARGET WINDRES_FOR_TARGET WINDMC_FOR_TARGET RAW_CXX_FOR_TARGET FLAGS_FOR_TARGET COMPILER_AS_FOR_TARGET COMPILER_LD_FOR_TARGET COMPILER_NM_FOR_TARGET MAINTAINER_MODE_TRUE MAINTAINER_MODE_FALSE MAINT stage1_cflags stage1_checking stage2_werror_flag datarootdir docdir pdfdir htmldir 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 TOPLEVEL_CONFIGURE_ARGUMENTS build build_cpu build_vendor build_os build_noncanonical host_noncanonical target_noncanonical host host_cpu host_vendor host_os target target_cpu target_vendor target_os INSTALL_PROGRAM INSTALL_SCRIPT INSTALL_DATA LN LN_S build_libsubdir build_subdir host_subdir target_subdir CC CFLAGS LDFLAGS CPPFLAGS ac_ct_CC EXEEXT OBJEXT CXX CXXFLAGS ac_ct_CXX GNATBIND ac_ct_GNATBIND GNATMAKE ac_ct_GNATMAKE do_compare gmplibs gmpinc stage1_languages SYSROOT_CFLAGS_FOR_TARGET DEBUG_PREFIX_CFLAGS_FOR_TARGET CFLAGS_FOR_TARGET CXXFLAGS_FOR_TARGET RPATH_ENVVAR GCC_SHLIB_SUBDIR tooldir build_tooldir CONFIGURE_GDB_TK GDB_TK INSTALL_GDB_TK build_configargs build_configdirs host_configargs configdirs target_configargs AR_FOR_BUILD AS_FOR_BUILD CC_FOR_BUILD CFLAGS_FOR_BUILD CXXFLAGS_FOR_BUILD CXX_FOR_BUILD DLLTOOL_FOR_BUILD GCJ_FOR_BUILD GFORTRAN_FOR_BUILD LDFLAGS_FOR_BUILD LD_FOR_BUILD NM_FOR_BUILD RANLIB_FOR_BUILD WINDMC_FOR_BUILD WINDRES_FOR_BUILD config_shell YACC BISON M4 LEX FLEX MAKEINFO EXPECT RUNTEST AR AS DLLTOOL LD LIPO NM RANLIB STRIP WINDRES WINDMC OBJCOPY OBJDUMP CC_FOR_TARGET CXX_FOR_TARGET GCC_FOR_TARGET GCJ_FOR_TARGET GFORTRAN_FOR_TARGET AR_FOR_TARGET AS_FOR_TARGET DLLTOOL_FOR_TARGET LD_FOR_TARGET LIPO_FOR_TARGET NM_FOR_TARGET OBJDUMP_FOR_TARGET RANLIB_FOR_TARGET STRIP_FOR_TARGET WINDRES_FOR_TARGET WINDMC_FOR_TARGET RAW_CXX_FOR_TARGET FLAGS_FOR_TARGET COMPILER_AS_FOR_TARGET COMPILER_LD_FOR_TARGET COMPILER_NM_FOR_TARGET MAINTAINER_MODE_TRUE MAINTAINER_MODE_FALSE MAINT stage1_cflags stage1_checking stage2_werror_flag datarootdir docdir pdfdir htmldir LIBOBJS LTLIBOBJS'
 ac_subst_files='serialization_dependencies host_makefile_frag target_makefile_frag alphaieee_frag ospace_frag'
 ac_pwd=`pwd`
 
@@ -5594,12 +5594,23 @@ case "${host}" in
   ;;
 esac
 
+# Decide which environment variable is used to find dynamic libraries.
 case "${host}" in
   *-*-hpux*) RPATH_ENVVAR=SHLIB_PATH ;;
   *-*-darwin* | *-*-rhapsody* ) RPATH_ENVVAR=DYLD_LIBRARY_PATH ;;
+  *-*-mingw* | *-*-cygwin ) RPATH_ENVVAR=PATH ;;
   *) RPATH_ENVVAR=LD_LIBRARY_PATH ;;
 esac
 
+# On systems where the dynamic library environment variable is PATH,
+# gcc/ will put dynamic libraries into a subdirectory to avoid adding
+# built executables to PATH.
+if test "$RPATH_ENVVAR" = PATH; then
+  GCC_SHLIB_SUBDIR=/shlib
+else
+  GCC_SHLIB_SUBDIR=
+fi
+
 # Record target_configdirs and the configure arguments for target and
 # build configuration in Makefile.
 target_configdirs=`echo "${target_configdirs}" | sed -e 's/target-//g'`
@@ -6072,6 +6083,7 @@ done
 
 
 
+
 # Build module lists & subconfigure args.
 
 
@@ -12971,6 +12983,7 @@ s,@DEBUG_PREFIX_CFLAGS_FOR_TARGET@,$DEBUG_PREFIX_CFLAGS_FOR_TARGET,;t t
 s,@CFLAGS_FOR_TARGET@,$CFLAGS_FOR_TARGET,;t t
 s,@CXXFLAGS_FOR_TARGET@,$CXXFLAGS_FOR_TARGET,;t t
 s,@RPATH_ENVVAR@,$RPATH_ENVVAR,;t t
+s,@GCC_SHLIB_SUBDIR@,$GCC_SHLIB_SUBDIR,;t t
 s,@tooldir@,$tooldir,;t t
 s,@build_tooldir@,$build_tooldir,;t t
 s,@CONFIGURE_GDB_TK@,$CONFIGURE_GDB_TK,;t t
diff --git a/configure.ac b/configure.ac
index d4b962f0445..e9309a6c6de 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2050,12 +2050,23 @@ case "${host}" in
   ;;
 esac
 
+# Decide which environment variable is used to find dynamic libraries.
 case "${host}" in
   *-*-hpux*) RPATH_ENVVAR=SHLIB_PATH ;;
   *-*-darwin* | *-*-rhapsody* ) RPATH_ENVVAR=DYLD_LIBRARY_PATH ;;
+  *-*-mingw* | *-*-cygwin ) RPATH_ENVVAR=PATH ;;
   *) RPATH_ENVVAR=LD_LIBRARY_PATH ;;
 esac
 
+# On systems where the dynamic library environment variable is PATH,
+# gcc/ will put dynamic libraries into a subdirectory to avoid adding
+# built executables to PATH.
+if test "$RPATH_ENVVAR" = PATH; then
+  GCC_SHLIB_SUBDIR=/shlib
+else
+  GCC_SHLIB_SUBDIR=
+fi
+
 # Record target_configdirs and the configure arguments for target and
 # build configuration in Makefile.
 target_configdirs=`echo "${target_configdirs}" | sed -e 's/target-//g'`
@@ -2513,6 +2524,7 @@ AC_SUBST_FILE(ospace_frag)
 
 # Miscellanea: directories, flags, etc.
 AC_SUBST(RPATH_ENVVAR)
+AC_SUBST(GCC_SHLIB_SUBDIR)
 AC_SUBST(tooldir)
 AC_SUBST(build_tooldir)
 AC_SUBST(CONFIGURE_GDB_TK)
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index c74589c933f..7b14a2c4428 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,15 @@
+2008-08-31  Aaron W. LaFramboise  <aaronavay62@aaronwl.com>
+
+	* mkmap-flat.awk: Add option pe_dll.
+	* config/i386/t-cygming (SHLIB_LINK): Support building libgcc_s.
+	* config/i386/t-cygwin (SHLIB_LC): Add.
+	* config/i386/t-mingw32 (SHLIB_LC): Add.
+	* config/i386/mingw32.h (SHARED_LIBGCC_UNDEFS_SPEC): New.
+	(SUBTARGET_EXTRA_SPECS): Use SHARED_LIBGCC_UNDEFS_SPEC.
+	(LINK_SPEC): Support libgcc_s.
+	(LIBGCC_SPEC): Support libgcc_s.
+	(LIBGCC_SONAME): New.
+
 2008-08-31  Jan Hubicka  <jh@suse.cz>
 
 	* predict.c (maybe_hot_bb_p, maybe_hot_edge_p): Previous commit
diff --git a/gcc/config/i386/mingw32.h b/gcc/config/i386/mingw32.h
index f5abe789977..bb5fd7f7e6e 100644
--- a/gcc/config/i386/mingw32.h
+++ b/gcc/config/i386/mingw32.h
@@ -67,19 +67,33 @@ along with GCC; see the file COPYING3.  If not see
 #define LIB_SPEC "%{pg:-lgmon} %{mwindows:-lgdi32 -lcomdlg32} \
                   -luser32 -lkernel32 -ladvapi32 -lshell32"
 
-/* Include in the mingw32 libraries with libgcc */
-#undef LINK_SPEC
+/* Weak symbols do not get resolved if using a Windows dll import lib.
+   Make the unwind registration references strong undefs.  */
+#if DWARF2_UNWIND_INFO
+#define SHARED_LIBGCC_UNDEFS_SPEC \
+ "%{shared-libgcc: -u ___register_frame_info -u ___deregister_frame_info}"
+#else
+#define SHARED_LIBGCC_UNDEFS_SPEC ""
+#endif
+
+#undef  SUBTARGET_EXTRA_SPECS
+#define SUBTARGET_EXTRA_SPECS						\
+  { "shared_libgcc_undefs", SHARED_LIBGCC_UNDEFS_SPEC }
+
 #define LINK_SPEC "%{mwindows:--subsystem windows} \
   %{mconsole:--subsystem console} \
   %{shared: %{mdll: %eshared and mdll are not compatible}} \
   %{shared: --shared} %{mdll:--dll} \
   %{static:-Bstatic} %{!static:-Bdynamic} \
-  %{shared|mdll: -e _DllMainCRTStartup@12}"
+  %{shared|mdll: -e _DllMainCRTStartup@12 --enable-auto-image-base} \
+  %(shared_libgcc_undefs)"
 
 /* Include in the mingw32 libraries with libgcc */
 #undef LIBGCC_SPEC
 #define LIBGCC_SPEC \
-  "%{mthreads:-lmingwthrd} -lmingw32 -lgcc -lmoldname -lmingwex -lmsvcrt"
+  "-lmingw32 \
+   %{shared-libgcc:-lgcc_s} -lgcc \
+   -lmoldname -lmingwex -lmsvcrt"
 
 #undef STARTFILE_SPEC
 #define STARTFILE_SPEC "%{shared|mdll:dllcrt2%O%s} \
@@ -186,3 +200,6 @@ __enable_execute_stack (void *addr)					\
 #if !TARGET_64BIT
 #define MD_UNWIND_SUPPORT "config/i386/w32-unwind.h"
 #endif
+
+/* This matches SHLIB_SONAME and SHLIB_SOVERSION in t-cygming. */
+#define LIBGCC_SONAME "libgcc_s_1.dll"
diff --git a/gcc/config/i386/t-cygming b/gcc/config/i386/t-cygming
index b2c50df01fa..c6e6cac7811 100644
--- a/gcc/config/i386/t-cygming
+++ b/gcc/config/i386/t-cygming
@@ -36,3 +36,51 @@ msformat-c.o: $(srcdir)/config/i386/msformat-c.c $(CONFIG_H) $(SYSTEM_H) coretyp
 	$(srcdir)/config/i386/msformat-c.c
 
 STMP_FIXINC=stmp-fixinc
+
+# Build a shared libgcc library for PECOFF with a DEF file
+# with the GNU linker.
+#
+# mkmap-flat.awk is used with the pe_dll option to produce a DEF instead
+# of an ELF map file.
+#
+# Warning: If SHLIB_SOVERSION or SHLIB_SONAME is updated, LIBGCC_SONAME
+# in mingw32.h must be updated also.
+
+SHLIB_EXT = .dll
+SHLIB_IMPLIB = @shlib_base_name@.a
+SHLIB_SOVERSION = 1
+SHLIB_SONAME = @shlib_base_name@_$(SHLIB_SOVERSION)$(SHLIB_EXT)
+SHLIB_MAP = @shlib_map_file@
+SHLIB_OBJS = @shlib_objs@
+SHLIB_DIR = @multilib_dir@/shlib
+SHLIB_SLIBDIR_QUAL = @shlib_slibdir_qual@
+SHLIB_LC = -luser32 -lkernel32 -ladvapi32 -lshell32
+
+SHLIB_LINK = $(LN_S) $(SHLIB_MAP) $(SHLIB_MAP).def && \
+	if [ ! -d $(SHLIB_DIR) ]; then \
+		mkdir $(SHLIB_DIR) \
+	else true; fi && \
+	$(GCC_FOR_TARGET) $(LIBGCC2_CFLAGS) -shared -nodefaultlibs \
+	$(SHLIB_MAP).def \
+	-Wl,--out-implib,$(SHLIB_DIR)/$(SHLIB_IMPLIB).tmp \
+	-o $(SHLIB_DIR)/$(SHLIB_SONAME).tmp @multilib_flags@ \
+	$(SHLIB_OBJS) $(SHLIB_LC) && \
+	$(AR_FOR_TARGET) -r $(SHLIB_DIR)/$(SHLIB_IMPLIB).tmp \
+		_chkstk.o _ctors.o gthr-win32.o && \
+	if [ -f $(SHLIB_DIR)/$(SHLIB_SONAME) ]; then \
+	  mv -f $(SHLIB_DIR)/$(SHLIB_SONAME) \
+		$(SHLIB_DIR)/$(SHLIB_SONAME).backup; \
+	else true; fi && \
+	mv $(SHLIB_DIR)/$(SHLIB_SONAME).tmp $(SHLIB_DIR)/$(SHLIB_SONAME) && \
+	mv $(SHLIB_DIR)/$(SHLIB_IMPLIB).tmp $(SHLIB_DIR)/$(SHLIB_IMPLIB)
+# $(slibdir) double quoted to protect it from expansion while building
+# libgcc.mk.  We want this delayed until actual install time.
+SHLIB_INSTALL = \
+	$$(mkinstalldirs) $$(DESTDIR)$$(slibdir)$(SHLIB_SLIBDIR_QUAL); \
+	$(INSTALL_PROGRAM) $(SHLIB_DIR)/$(SHLIB_SONAME) \
+	  $$(DESTDIR)$$(bindir)/$(SHLIB_SONAME); \
+	$(INSTALL_DATA) $(SHLIB_DIR)/$(SHLIB_IMPLIB) \
+	  $$(DESTDIR)$$(slibdir)$(SHLIB_SLIBDIR_QUAL)/$(SHLIB_IMPLIB)
+SHLIB_MKMAP = $(srcdir)/mkmap-flat.awk
+SHLIB_MKMAP_OPTS = -v pe_dll=1
+SHLIB_MAPFILES = $(srcdir)/libgcc-std.ver
diff --git a/gcc/config/i386/t-cygwin b/gcc/config/i386/t-cygwin
index c6e77731b1a..3715c0b450c 100644
--- a/gcc/config/i386/t-cygwin
+++ b/gcc/config/i386/t-cygwin
@@ -14,3 +14,5 @@ cygwin2.o: $(srcdir)/config/i386/cygwin2.c $(CONFIG_H) $(SYSTEM_H) coretypes.h \
 	$(CC) -c $(ALL_CFLAGS) $(ALL_CPPFLAGS) $(INCLUDES) \
 	$(srcdir)/config/i386/cygwin2.c
 
+# Cygwin-specific parts of LIB_SPEC
+SHLIB_LC += -lcygwin
diff --git a/gcc/config/i386/t-mingw32 b/gcc/config/i386/t-mingw32
index 6d043a37f6a..79554e708f4 100644
--- a/gcc/config/i386/t-mingw32
+++ b/gcc/config/i386/t-mingw32
@@ -1,2 +1,5 @@
 # Match SYSTEM_INCLUDE_DIR
 NATIVE_SYSTEM_HEADER_DIR = /mingw/include
+
+# MinGW-specific parts of LIB_SPEC
+SHLIB_LC += -lmingw32 -lmingwex -lmoldname -lmsvcrt
diff --git a/gcc/mkmap-flat.awk b/gcc/mkmap-flat.awk
index 377731a4e7d..4a9a99356d8 100644
--- a/gcc/mkmap-flat.awk
+++ b/gcc/mkmap-flat.awk
@@ -18,6 +18,11 @@
 # along with GCC; see the file COPYING3.  If not see
 # <http://www.gnu.org/licenses/>.
 
+# Options:
+#   "-v leading_underscore=1" : Symbols in map need leading underscore.
+#   "-v pe_dll=1"             : Create .DEF file for Windows PECOFF
+#                               DLL link instead of map file.
+
 BEGIN {
   state = "nm";
   excluding = 0;
@@ -86,7 +91,14 @@ $1 == "}" {
 }
 
 END {
+
+  if (pe_dll) {
+    # This matches SHLIB_SONAME in config/i386/t-cygming.
+    print "LIBRARY libgcc_s_1.dll";
+    print "EXPORTS";
+  }
+
   for (sym in export)
-    if (def[sym])
+    if (def[sym] || (pe_dll && def["_" sym]))
       print sym;
 }
diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index ec3292ff1ce..29adf70c41f 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,16 @@
+2008-08-31  Aaron W. LaFramboise  <aaronavay62@aaronwl.com>
+
+	* acinclude.m4 <enable_symvers>: Don't use symvers on Windows.
+	* configure: Regenerated.
+	* Makefile.in: Regenerated.
+	* src/Makefile.in: Regenerated.
+	* doc/Makefile.in: Regenerated.
+	* po/Makefile.in: Regenerated.
+	* libmath/Makefile.in: Regenerated.
+	* include/Makefile.in: Regenerated.
+	* libsupc++/Makefile.in: Regenerated.
+	* testsuite/Makefile.in: Regenerated.
+
 2008-08-29  Mark Mitchell  <mark@codesourcery.com>
 
 	* testsuite/25_algorithms/nth_element/2.cc: Constrain iterations
diff --git a/libstdc++-v3/Makefile.in b/libstdc++-v3/Makefile.in
index f4e4a414b88..e1013ef9c24 100644
--- a/libstdc++-v3/Makefile.in
+++ b/libstdc++-v3/Makefile.in
@@ -36,6 +36,7 @@ POST_UNINSTALL = :
 build_triplet = @build@
 host_triplet = @host@
 target_triplet = @target@
+LIBOBJDIR =
 DIST_COMMON = README $(am__configure_deps) $(srcdir)/../config.guess \
 	$(srcdir)/../config.sub $(srcdir)/../install-sh \
 	$(srcdir)/../ltmain.sh $(srcdir)/../missing \
diff --git a/libstdc++-v3/acinclude.m4 b/libstdc++-v3/acinclude.m4
index 052515b2156..279c4f3e145 100644
--- a/libstdc++-v3/acinclude.m4
+++ b/libstdc++-v3/acinclude.m4
@@ -2637,7 +2637,12 @@ if test x$enable_symvers = xyes ; then
     enable_symvers=no
   else
     if test $with_gnu_ld = yes ; then
-      enable_symvers=gnu
+      case ${target_os} in
+        cygwin* | pe | mingw32*)
+          enable_symvers=no ;;
+        *)
+          enable_symvers=gnu ;;
+      esac
     else
       case ${target_os} in
         darwin*)
diff --git a/libstdc++-v3/configure b/libstdc++-v3/configure
index 4287de594d8..d7e034b9c4d 100755
--- a/libstdc++-v3/configure
+++ b/libstdc++-v3/configure
@@ -106551,7 +106551,12 @@ if test x$enable_symvers = xyes ; then
     enable_symvers=no
   else
     if test $with_gnu_ld = yes ; then
-      enable_symvers=gnu
+      case ${target_os} in
+        cygwin* | pe | mingw32*)
+          enable_symvers=no ;;
+        *)
+          enable_symvers=gnu ;;
+      esac
     else
       case ${target_os} in
         darwin*)
diff --git a/libstdc++-v3/doc/Makefile.in b/libstdc++-v3/doc/Makefile.in
index 17c2e864d3c..ab2a902e766 100644
--- a/libstdc++-v3/doc/Makefile.in
+++ b/libstdc++-v3/doc/Makefile.in
@@ -36,6 +36,7 @@ POST_UNINSTALL = :
 build_triplet = @build@
 host_triplet = @host@
 target_triplet = @target@
+LIBOBJDIR =
 DIST_COMMON = $(srcdir)/Makefile.am $(srcdir)/Makefile.in \
 	$(top_srcdir)/fragment.am
 subdir = doc
diff --git a/libstdc++-v3/include/Makefile.in b/libstdc++-v3/include/Makefile.in
index 2c5d744fd4f..81d0cc80633 100644
--- a/libstdc++-v3/include/Makefile.in
+++ b/libstdc++-v3/include/Makefile.in
@@ -36,6 +36,7 @@ POST_UNINSTALL = :
 build_triplet = @build@
 host_triplet = @host@
 target_triplet = @target@
+LIBOBJDIR =
 DIST_COMMON = $(srcdir)/Makefile.am $(srcdir)/Makefile.in \
 	$(top_srcdir)/fragment.am
 subdir = include
diff --git a/libstdc++-v3/libmath/Makefile.in b/libstdc++-v3/libmath/Makefile.in
index 1592897335e..18dfbcc5559 100644
--- a/libstdc++-v3/libmath/Makefile.in
+++ b/libstdc++-v3/libmath/Makefile.in
@@ -37,6 +37,7 @@ POST_UNINSTALL = :
 build_triplet = @build@
 host_triplet = @host@
 target_triplet = @target@
+LIBOBJDIR =
 subdir = libmath
 DIST_COMMON = $(srcdir)/Makefile.am $(srcdir)/Makefile.in
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
diff --git a/libstdc++-v3/libsupc++/Makefile.in b/libstdc++-v3/libsupc++/Makefile.in
index c3d1c6c6b43..5b0a246f820 100644
--- a/libstdc++-v3/libsupc++/Makefile.in
+++ b/libstdc++-v3/libsupc++/Makefile.in
@@ -38,6 +38,7 @@ POST_UNINSTALL = :
 build_triplet = @build@
 host_triplet = @host@
 target_triplet = @target@
+LIBOBJDIR =
 DIST_COMMON = $(glibcxxinstall_HEADERS) $(srcdir)/Makefile.am \
 	$(srcdir)/Makefile.in $(top_srcdir)/fragment.am
 subdir = libsupc++
diff --git a/libstdc++-v3/po/Makefile.in b/libstdc++-v3/po/Makefile.in
index b19c1b4d94b..408562e7fc6 100644
--- a/libstdc++-v3/po/Makefile.in
+++ b/libstdc++-v3/po/Makefile.in
@@ -36,6 +36,7 @@ POST_UNINSTALL = :
 build_triplet = @build@
 host_triplet = @host@
 target_triplet = @target@
+LIBOBJDIR =
 DIST_COMMON = $(srcdir)/Makefile.am $(srcdir)/Makefile.in \
 	$(top_srcdir)/fragment.am
 subdir = po
diff --git a/libstdc++-v3/src/Makefile.in b/libstdc++-v3/src/Makefile.in
index 6c2030a845e..2f4f3ddae7a 100644
--- a/libstdc++-v3/src/Makefile.in
+++ b/libstdc++-v3/src/Makefile.in
@@ -37,6 +37,7 @@ POST_UNINSTALL = :
 build_triplet = @build@
 host_triplet = @host@
 target_triplet = @target@
+LIBOBJDIR =
 DIST_COMMON = $(srcdir)/Makefile.am $(srcdir)/Makefile.in \
 	$(top_srcdir)/fragment.am
 subdir = src
diff --git a/libstdc++-v3/testsuite/Makefile.in b/libstdc++-v3/testsuite/Makefile.in
index 4bd6419a506..9e58dfca798 100644
--- a/libstdc++-v3/testsuite/Makefile.in
+++ b/libstdc++-v3/testsuite/Makefile.in
@@ -36,6 +36,7 @@ POST_UNINSTALL = :
 build_triplet = @build@
 host_triplet = @host@
 target_triplet = @target@
+LIBOBJDIR =
 DIST_COMMON = $(srcdir)/Makefile.am $(srcdir)/Makefile.in \
 	$(top_srcdir)/fragment.am
 subdir = testsuite