configure.ac (USE_CYGWIN_LIBSTDCXX_WRAPPERS): Define to reflect status of AC_CHECK_FUNC for Cygwin DLL libstdc++ support wrappers.

gcc/ChangeLog:

2009-11-30  Dave Korn  <dave.korn.cygwin@gmail.com>

	* configure.ac (USE_CYGWIN_LIBSTDCXX_WRAPPERS): Define to reflect
	status of AC_CHECK_FUNC for Cygwin DLL libstdc++ support wrappers.
	* configure: Regenerate.
	* config.in: Regenerate.

	* config/i386/cygwin.h (CXX_WRAP_SPEC_LIST): Define list of --wrap
	options for Cygwin DLL libstdc++ support wrappers.
	(CXX_WRAP_SPEC_OPT): Define spec to use wrappers or not by default
	according to defined value of USE_CYGWIN_LIBSTDCXX_WRAPPERS.
	(CXX_WRAP_SPEC): Define entire wrapper spec in or out according to
	whether USE_CYGWIN_LIBSTDCXX_WRAPPERS is even defined or not.
	(LINK_SPEC): Include CXX_WRAP_SPEC.
	* gcc/config/i386/winnt.c (wrapper_strcmp): New qsort helper function.
	(i386_find_on_wrapper_list): Check if a function is found on the list
	of libstdc++ wrapper options.
	(i386_pe_file_end): If we are importing a wrapped function, also emit
	an external declaration for the real version.
	* config/i386/cygming.opt (muse-libstdc-wrappers): New option for
	Cygwin targets. Update copyright year.

libstdc++-v3/ChangeLog:

2009-11-30  Dave Korn  <dave.korn.cygwin@gmail.com>

	* libstdc++-v3/acinclude.m4 (GLIBCXX_ENABLE_SYMVERS): Don't disable
	on PE targets.
	* libstdc++-v3/configure: Regenerate.
	* libstdc++-v3/configure.host: Add libtool DLL options for Cygwin
	and MinGW platforms.

	* libstdc++-v3/include/bits/c++config (_GLIBCXX_VISIBILITY_ATTR): On
	platforms that don't support visibility, allow them to declare a macro
	_GLIBCXX_PSEUDO_VISIBILITY that is applied in place of visibility.
	(_GLIBCXX_PSEUDO_VISIBILITY): Supply empty default if not declared by
	CPU- or OS-specific headers.

	* libstdc++-v3/config/os/newlib/os_defines.h
	(_GLIBCXX_PSEUDO_VISIBILITY_default): New macro for dllimport.
	(_GLIBCXX_PSEUDO_VISIBILITY_hidden): New empty macro.
	(_GLIBCXX_PSEUDO_VISIBILITY): Evaluate to one of the above.
	* libstdc++-v3/config/os/mingw32/os_defines.h
	(_GLIBCXX_PSEUDO_VISIBILITY_default,
	_GLIBCXX_PSEUDO_VISIBILITY_hidden,
	_GLIBCXX_PSEUDO_VISIBILITY): Likewise.

From-SVN: r154853

7 files changed, 54 insertions, 3 deletions

diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index 5919694834b..e44d6f4e5f3 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,26 @@
+2009-11-30  Dave Korn  <dave.korn.cygwin@gmail.com>
+
+	* libstdc++-v3/acinclude.m4 (GLIBCXX_ENABLE_SYMVERS): Don't disable
+	on PE targets.
+	* libstdc++-v3/configure: Regenerate.
+	* libstdc++-v3/configure.host: Add libtool DLL options for Cygwin
+	and MinGW platforms.
+
+	* libstdc++-v3/include/bits/c++config (_GLIBCXX_VISIBILITY_ATTR): On
+	platforms that don't support visibility, allow them to declare a macro
+	_GLIBCXX_PSEUDO_VISIBILITY that is applied in place of visibility.
+	(_GLIBCXX_PSEUDO_VISIBILITY): Supply empty default if not declared by
+	CPU- or OS-specific headers.
+
+	* libstdc++-v3/config/os/newlib/os_defines.h
+	(_GLIBCXX_PSEUDO_VISIBILITY_default): New macro for dllimport.
+	(_GLIBCXX_PSEUDO_VISIBILITY_hidden): New empty macro.
+	(_GLIBCXX_PSEUDO_VISIBILITY): Evaluate to one of the above.
+	* libstdc++-v3/config/os/mingw32/os_defines.h
+	(_GLIBCXX_PSEUDO_VISIBILITY_default,
+	_GLIBCXX_PSEUDO_VISIBILITY_hidden,
+	_GLIBCXX_PSEUDO_VISIBILITY): Likewise.
+
 2009-11-30  Paolo Carlini  <paolo.carlini@oracle.com>
 
 	* include/tr1_impl/functional: Remove file, copy its contents,
diff --git a/libstdc++-v3/acinclude.m4 b/libstdc++-v3/acinclude.m4
index aba9a1b2f52..e0c698d75c2 100644
--- a/libstdc++-v3/acinclude.m4
+++ b/libstdc++-v3/acinclude.m4
@@ -2737,7 +2737,7 @@ if test x$enable_symvers = xyes ; then
   else
     if test $with_gnu_ld = yes ; then
       case ${target_os} in
-        cygwin* | pe | mingw32* | hpux*)
+        hpux*)
           enable_symvers=no ;;
         *)
           enable_symvers=gnu ;;
diff --git a/libstdc++-v3/config/os/mingw32/os_defines.h b/libstdc++-v3/config/os/mingw32/os_defines.h
index 7b4e8066457..5435ce9ae84 100644
--- a/libstdc++-v3/config/os/mingw32/os_defines.h
+++ b/libstdc++-v3/config/os/mingw32/os_defines.h
@@ -45,6 +45,15 @@
 #undef NOMINMAX
 #define NOMINMAX 1
 
+#if defined (_GLIBCXX_DLL)
+#define _GLIBCXX_PSEUDO_VISIBILITY_default __attribute__ ((__dllimport__))
+#else
+#define _GLIBCXX_PSEUDO_VISIBILITY_default
+#endif
+#define _GLIBCXX_PSEUDO_VISIBILITY_hidden
+
+#define _GLIBCXX_PSEUDO_VISIBILITY(V) _GLIBCXX_PSEUDO_VISIBILITY_ ## V
+
 // See libstdc++/20806.
 #define _GLIBCXX_HAVE_DOS_BASED_FILESYSTEM 1
 
diff --git a/libstdc++-v3/config/os/newlib/os_defines.h b/libstdc++-v3/config/os/newlib/os_defines.h
index fbc886365ff..1ff3d4846cb 100644
--- a/libstdc++-v3/config/os/newlib/os_defines.h
+++ b/libstdc++-v3/config/os/newlib/os_defines.h
@@ -36,6 +36,15 @@
 #ifdef __CYGWIN__
 #define _GLIBCXX_GTHREAD_USE_WEAK 0
 
+#if defined (_GLIBCXX_DLL)
+#define _GLIBCXX_PSEUDO_VISIBILITY_default __attribute__ ((__dllimport__))
+#else
+#define _GLIBCXX_PSEUDO_VISIBILITY_default
+#endif
+#define _GLIBCXX_PSEUDO_VISIBILITY_hidden
+
+#define _GLIBCXX_PSEUDO_VISIBILITY(V) _GLIBCXX_PSEUDO_VISIBILITY_ ## V
+
 // See libstdc++/20806.
 #define _GLIBCXX_HAVE_DOS_BASED_FILESYSTEM 1
 #endif
diff --git a/libstdc++-v3/configure b/libstdc++-v3/configure
index 75adc589e12..4f5d51783d6 100755
--- a/libstdc++-v3/configure
+++ b/libstdc++-v3/configure
@@ -58050,7 +58050,7 @@ if test x$enable_symvers = xyes ; then
   else
     if test $with_gnu_ld = yes ; then
       case ${target_os} in
-        cygwin* | pe | mingw32* | hpux*)
+        hpux*)
           enable_symvers=no ;;
         *)
           enable_symvers=gnu ;;
diff --git a/libstdc++-v3/configure.host b/libstdc++-v3/configure.host
index de7745a1286..02292b016d0 100644
--- a/libstdc++-v3/configure.host
+++ b/libstdc++-v3/configure.host
@@ -209,6 +209,7 @@ case "${host_os}" in
     ;;
   cygwin*)
     os_include_dir="os/newlib"
+    OPT_LDFLAGS="${OPT_LDFLAGS} -no-undefined -bindir \$(bindir)"
     ;;
   darwin | darwin[1-7] | darwin[1-7].*)
     # On Darwin, performance is improved if libstdc++ is single-module.
@@ -258,6 +259,7 @@ case "${host_os}" in
   mingw32*)
     os_include_dir="os/mingw32"
     error_constants_dir="os/mingw32"
+    OPT_LDFLAGS="${OPT_LDFLAGS} -no-undefined -bindir \$(bindir)"
     ;;
   netbsd*)
     os_include_dir="os/bsd/netbsd"
diff --git a/libstdc++-v3/include/bits/c++config b/libstdc++-v3/include/bits/c++config
index f4f1f8b901f..3746696458a 100644
--- a/libstdc++-v3/include/bits/c++config
+++ b/libstdc++-v3/include/bits/c++config
@@ -42,7 +42,9 @@
 #if _GLIBCXX_HAVE_ATTRIBUTE_VISIBILITY
 # define _GLIBCXX_VISIBILITY_ATTR(V) __attribute__ ((__visibility__ (#V)))
 #else
-# define _GLIBCXX_VISIBILITY_ATTR(V) 
+// If this is not supplied by the OS-specific or CPU-specific
+// headers included below, it will be defined to an empty default.
+# define _GLIBCXX_VISIBILITY_ATTR(V) _GLIBCXX_PSEUDO_VISIBILITY(V)
 #endif
 
 // Macros for deprecated.
@@ -275,6 +277,12 @@ namespace std
 // Pick up any CPU-specific definitions.
 #include <bits/cpu_defines.h>
 
+// If platform uses neither visibility nor psuedo-visibility,
+// specify empty default for namespace annotation macros.
+#ifndef _GLIBCXX_PSEUDO_VISIBILITY
+#define _GLIBCXX_PSEUDO_VISIBILITY(V)
+#endif
+
 // Allow use of "export template." This is currently not a feature
 // that g++ supports.
 // #define _GLIBCXX_EXPORT_TEMPLATE 1