Handle different versions of Solaris 8 <iso/math_iso.h>, <iso/stdlib_iso.h>

	* acinclude.m4 (GLIBCXX_CHECK_MATH_PROTO)
	(GLIBCXX_CHECK_STDLIB_PROTO): New tests.
	* configure.ac (GLIBCXX_CHECK_MATH_PROTO)
	(GLIBCXX_CHECK_STDLIB_PROTO): Call them.
	* configure: Regenerate.
	* config.h.in: Regenerate.
	* config/os/solaris/solaris2.8/os_defines.h
	(__CORRECT_ISO_CPP_MATH_H_PROTO2): Don't define.
	* config/os/solaris/solaris2.9: Remove.
	* configure.host (solaris2.8): Merge with ...
	(solaris2.9, solaris2.1[0-9]): ... this.
	Always use os/solaris/solaris2.8.

From-SVN: r178217

11 files changed, 254 insertions, 282 deletions

diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index 69e297d..bc745b6 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,18 @@
+2011-08-29  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
+
+	* acinclude.m4 (GLIBCXX_CHECK_MATH_PROTO)
+	(GLIBCXX_CHECK_STDLIB_PROTO): New tests.
+	* configure.ac (GLIBCXX_CHECK_MATH_PROTO)
+	(GLIBCXX_CHECK_STDLIB_PROTO): Call them.
+	* configure: Regenerate.
+	* config.h.in: Regenerate.
+	* config/os/solaris/solaris2.8/os_defines.h
+	(__CORRECT_ISO_CPP_MATH_H_PROTO2): Don't define.
+	* config/os/solaris/solaris2.9: Remove.
+	* configure.host (solaris2.8): Merge with ...
+	(solaris2.9, solaris2.1[0-9]): ... this.
+	Always use os/solaris/solaris2.8.
+
 2011-08-28  Paolo Carlini  <paolo.carlini@oracle.com>
 
 	* include/bits/move.h (swap(_Tp(&)[_Nm], _Tp(&)[_Nm])): Remove
diff --git a/libstdc++-v3/acinclude.m4 b/libstdc++-v3/acinclude.m4
index 8bbc40e..44ae984 100644
--- a/libstdc++-v3/acinclude.m4
+++ b/libstdc++-v3/acinclude.m4
@@ -1693,6 +1693,100 @@ AC_DEFUN([GLIBCXX_COMPUTE_STDIO_INTEGER_CONSTANTS], [
 ])
 
 dnl
+dnl Check whether required C++ overloads are present in <math.h>.
+dnl
+
+AC_DEFUN([GLIBCXX_CHECK_MATH_PROTO], [
+
+  AC_LANG_SAVE
+  AC_LANG_CPLUSPLUS
+
+  case "$host" in
+    *-*-solaris2.*)
+      # Solaris 8 FCS only had an overload for double std::abs(double) in
+      # <iso/math_iso.h>.  Patches 111721-04 (SPARC) and 112757-01 (x86)
+      # introduced the full set also found from Solaris 9 onwards.
+      AC_MSG_CHECKING([for float std::abs(float) overload])
+      AC_CACHE_VAL(glibcxx_cv_abs_float, [
+	AC_COMPILE_IFELSE([AC_LANG_SOURCE(
+	  [#include <math.h>
+	   namespace std {
+	     inline float abs(float __x)
+	     {  return __builtin_fabsf(__x); }
+	   }
+	])],
+        [glibcxx_cv_abs_float=no],
+        [glibcxx_cv_abs_float=yes]
+      )])
+
+      # autoheader cannot handle indented templates.
+      AH_VERBATIM([__CORRECT_ISO_CPP_MATH_H_PROTO1],
+        [/* Define if all C++ overloads are available in <math.h>.  */
+#if __cplusplus >= 199711L
+#undef __CORRECT_ISO_CPP_MATH_H_PROTO1
+#endif])
+      AH_VERBATIM([__CORRECT_ISO_CPP_MATH_H_PROTO2],
+        [/* Define if only double std::abs(double) is available in <math.h>.  */
+#if __cplusplus >= 199711L
+#undef __CORRECT_ISO_CPP_MATH_H_PROTO2
+#endif])
+
+      if test $glibcxx_cv_abs_float = yes; then
+        AC_DEFINE(__CORRECT_ISO_CPP_MATH_H_PROTO1)
+      else
+        AC_DEFINE(__CORRECT_ISO_CPP_MATH_H_PROTO2)
+      fi
+      AC_MSG_RESULT($glibcxx_cv_abs_float)
+      ;;
+  esac
+
+  AC_LANG_RESTORE
+])
+
+dnl
+dnl Check whether required C++ overloads are present in <stdlib.h>.
+dnl
+
+AC_DEFUN([GLIBCXX_CHECK_STDLIB_PROTO], [
+
+  AC_LANG_SAVE
+  AC_LANG_CPLUSPLUS
+
+  case "$host" in
+    *-*-solaris2.*)
+      # Solaris 8 FCS lacked the overloads for long std::abs(long) and
+      # ldiv_t std::div(long, long) in <iso/stdlib_iso.h>.  Patches 109607-02
+      # (SPARC) and 109608-02 (x86) introduced them.
+      AC_MSG_CHECKING([for long std::abs(long) overload])
+      AC_CACHE_VAL(glibcxx_cv_abs_long, [
+	AC_COMPILE_IFELSE([AC_LANG_SOURCE(
+	  [#include <stdlib.h>
+	   namespace std {
+	     inline long
+	     abs(long __i) { return labs(__i); }
+	   }
+        ])],
+        [glibcxx_cv_abs_long=no],
+        [glibcxx_cv_abs_long=yes]
+      )])
+
+      # autoheader cannot handle indented templates.
+      AH_VERBATIM([__CORRECT_ISO_CPP_STDLIB_H_PROTO],
+        [/* Define if all C++ overloads are available in <stdlib.h>.  */
+#if __cplusplus >= 199711L
+#undef __CORRECT_ISO_CPP_STDLIB_H_PROTO
+#endif])
+      if test $glibcxx_cv_abs_long = yes; then
+        AC_DEFINE(__CORRECT_ISO_CPP_STDLIB_H_PROTO, 1)
+      fi
+      AC_MSG_RESULT($glibcxx_cv_abs_long)
+      ;;
+  esac
+
+  AC_LANG_RESTORE
+])
+
+dnl
 dnl Check whether macros, etc are present for <system_error>
 dnl
 AC_DEFUN([GLIBCXX_CHECK_SYSTEM_ERROR], [
diff --git a/libstdc++-v3/config.h.in b/libstdc++-v3/config.h.in
index bf0ee34..837e2c7 100644
--- a/libstdc++-v3/config.h.in
+++ b/libstdc++-v3/config.h.in
@@ -826,6 +826,21 @@
 /* Define to 1 if mutex_timedlock is available. */
 #undef _GTHREAD_USE_MUTEX_TIMEDLOCK
 
+/* Define if all C++ overloads are available in <math.h>.  */
+#if __cplusplus >= 199711L
+#undef __CORRECT_ISO_CPP_MATH_H_PROTO1
+#endif
+
+/* Define if only double std::abs(double) is available in <math.h>.  */
+#if __cplusplus >= 199711L
+#undef __CORRECT_ISO_CPP_MATH_H_PROTO2
+#endif
+
+/* Define if all C++ overloads are available in <stdlib.h>.  */
+#if __cplusplus >= 199711L
+#undef __CORRECT_ISO_CPP_STDLIB_H_PROTO
+#endif
+
 #if defined (HAVE__ACOSF) && ! defined (HAVE_ACOSF)
 # define HAVE_ACOSF 1
 # define acosf _acosf
diff --git a/libstdc++-v3/config/os/solaris/solaris2.8/os_defines.h b/libstdc++-v3/config/os/solaris/solaris2.8/os_defines.h
index c58126b..82c1ec1 100644
--- a/libstdc++-v3/config/os/solaris/solaris2.8/os_defines.h
+++ b/libstdc++-v3/config/os/solaris/solaris2.8/os_defines.h
@@ -1,4 +1,4 @@
-// Specific definitions for Solaris 8  -*- C++ -*-
+// Specific definitions for Solaris 8+  -*- C++ -*-
 
 // Copyright (C) 2000, 2002, 2005, 2009, 2011 Free Software Foundation, Inc.
 //
@@ -28,9 +28,12 @@
 // System-specific #define, typedefs, corrections, etc, go here.  This
 // file will come before all others.
 
-// FIXME: Autoconf if possible.
 #if __cplusplus >= 199711L
-#define __CORRECT_ISO_CPP_MATH_H_PROTO2
+// Overloads in <iso/math_iso.h> and <iso/stdlib_iso.h> changed with
+// Solaris 8 patches.  Since <bits/c++config.h> includes
+// <bits/os_defines.h> before configure results,
+// __CORRECT_ISO_CPP_MATH_H_PROTO[12] and __CORRECT_ISO_CPP_STDLIB_H_PROTO
+// must be defined via acinclude.m4.
 #define __CORRECT_ISO_CPP_STRING_H_PROTO
 #define __CORRECT_ISO_CPP_WCHAR_H_PROTO
 #endif
diff --git a/libstdc++-v3/config/os/solaris/solaris2.9/ctype_base.h b/libstdc++-v3/config/os/solaris/solaris2.9/ctype_base.h
deleted file mode 100644
index 1ae3874..0000000
--- a/libstdc++-v3/config/os/solaris/solaris2.9/ctype_base.h
+++ /dev/null
@@ -1,60 +0,0 @@
-// Locale support -*- C++ -*-
-
-// Copyright (C) 1997, 1998, 1999, 2000, 2003, 2009 Free Software Foundation, Inc.
-//
-// This file is part of the GNU ISO C++ Library.  This library is free
-// software; you can redistribute it and/or modify it under the
-// terms of the GNU General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option)
-// any later version.
-
-// This library is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU General Public License for more details.
-
-// Under Section 7 of GPL version 3, you are granted additional
-// permissions described in the GCC Runtime Library Exception, version
-// 3.1, as published by the Free Software Foundation.
-
-// You should have received a copy of the GNU General Public License and
-// a copy of the GCC Runtime Library Exception along with this program;
-// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
-// <http://www.gnu.org/licenses/>.
-
-//
-// ISO C++ 14882: 22.1  Locales
-//
-  
-// Information as gleaned from /usr/include/ctype.h. Looks like this
-// only works with solaris2.7 and solaris2.8. Thanks for not changing
-// things, sun engineers!
-
-namespace std _GLIBCXX_VISIBILITY(default)
-{
-_GLIBCXX_BEGIN_NAMESPACE_VERSION
-
-  /// @brief  Base class for ctype.
-  struct ctype_base
-  {
-    // Non-standard typedefs.
-    typedef int* 		__to_type;
-
-    // NB: Offsets into ctype<char>::_M_table force a particular size
-    // on the mask type. Because of this, we don't use an enum.
-    typedef unsigned int 	mask;   
-    static const mask upper    	= _ISUPPER;
-    static const mask lower 	= _ISLOWER;
-    static const mask alpha 	= _ISALPHA;
-    static const mask digit 	= _ISDIGIT;
-    static const mask xdigit 	= _ISXDIGIT;
-    static const mask space 	= _ISSPACE;
-    static const mask print 	= _ISPRINT;
-    static const mask graph 	= _ISALPHA | _ISDIGIT | _ISPUNCT;
-    static const mask cntrl 	= _ISCNTRL;
-    static const mask punct 	= _ISPUNCT;
-    static const mask alnum 	= _ISALPHA | _ISDIGIT;
-  };
-
-_GLIBCXX_END_NAMESPACE_VERSION
-} // namespace
diff --git a/libstdc++-v3/config/os/solaris/solaris2.9/ctype_configure_char.cc b/libstdc++-v3/config/os/solaris/solaris2.9/ctype_configure_char.cc
deleted file mode 100644
index d351942..0000000
--- a/libstdc++-v3/config/os/solaris/solaris2.9/ctype_configure_char.cc
+++ /dev/null
@@ -1,99 +0,0 @@
-// Locale support -*- C++ -*-
-
-// Copyright (C) 2011 Free Software Foundation, Inc.
-//
-// This file is part of the GNU ISO C++ Library.  This library is free
-// software; you can redistribute it and/or modify it under the
-// terms of the GNU General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option)
-// any later version.
-
-// This library is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU General Public License for more details.
-
-// Under Section 7 of GPL version 3, you are granted additional
-// permissions described in the GCC Runtime Library Exception, version
-// 3.1, as published by the Free Software Foundation.
-
-// You should have received a copy of the GNU General Public License and
-// a copy of the GCC Runtime Library Exception along with this program;
-// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
-// <http://www.gnu.org/licenses/>.
-
-/** @file ctype_configure_char.cc */
-
-//
-// ISO C++ 14882: 22.1  Locales
-//
-
-#include <locale>
-#include <cstdlib>
-#include <cstring>
-
-namespace std _GLIBCXX_VISIBILITY(default)
-{
-_GLIBCXX_BEGIN_NAMESPACE_VERSION
-
-// Information as gleaned from /usr/include/ctype.h
-  
-  const ctype_base::mask* 
-  ctype<char>::classic_table() throw()
-  { return __ctype_mask; }
-
-  ctype<char>::ctype(__c_locale, const mask* __table, bool __del, 
-		     size_t __refs)
-  : facet(__refs), _M_del(__table != 0 && __del), 
-  _M_toupper(__trans_upper), _M_tolower(__trans_lower),
-  _M_table(__table ? __table : classic_table()) 
-  { 
-    memset(_M_widen, 0, sizeof(_M_widen));
-    _M_widen_ok = 0;
-    memset(_M_narrow, 0, sizeof(_M_narrow));
-    _M_narrow_ok = 0;
-  }
-
-  ctype<char>::ctype(const mask* __table, bool __del, size_t __refs)
-  : facet(__refs), _M_del(__table != 0 && __del), 
-  _M_toupper(__trans_upper), _M_tolower(__trans_lower),
-  _M_table(__table ? __table : classic_table()) 
-  { 
-    memset(_M_widen, 0, sizeof(_M_widen));
-    _M_widen_ok = 0;
-    memset(_M_narrow, 0, sizeof(_M_narrow));
-    _M_narrow_ok = 0;
-  }
-
-  char
-  ctype<char>::do_toupper(char __c) const
-  { return _M_toupper[static_cast<unsigned char>(__c)]; }
-
-  const char*
-  ctype<char>::do_toupper(char* __low, const char* __high) const
-  {
-    while (__low < __high)
-      {
-	*__low = _M_toupper[static_cast<unsigned char>(*__low)];
-	++__low;
-      }
-    return __high;
-  }
-
-  char
-  ctype<char>::do_tolower(char __c) const
-  { return _M_tolower[static_cast<unsigned char>(__c)]; }
-
-  const char* 
-  ctype<char>::do_tolower(char* __low, const char* __high) const
-  {
-    while (__low < __high)
-      {
-	*__low = _M_tolower[static_cast<unsigned char>(*__low)];
-	++__low;
-      }
-    return __high;
-  }
-
-_GLIBCXX_END_NAMESPACE_VERSION
-} // namespace
diff --git a/libstdc++-v3/config/os/solaris/solaris2.9/ctype_inline.h b/libstdc++-v3/config/os/solaris/solaris2.9/ctype_inline.h
deleted file mode 100644
index d6b8df4..0000000
--- a/libstdc++-v3/config/os/solaris/solaris2.9/ctype_inline.h
+++ /dev/null
@@ -1,76 +0,0 @@
-// Locale support -*- C++ -*-
-
-// Copyright (C) 2000, 2002, 2009, 2010 Free Software Foundation, Inc.
-//
-// This file is part of the GNU ISO C++ Library.  This library is free
-// software; you can redistribute it and/or modify it under the
-// terms of the GNU General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option)
-// any later version.
-
-// This library is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU General Public License for more details.
-
-// Under Section 7 of GPL version 3, you are granted additional
-// permissions described in the GCC Runtime Library Exception, version
-// 3.1, as published by the Free Software Foundation.
-
-// You should have received a copy of the GNU General Public License and
-// a copy of the GCC Runtime Library Exception along with this program;
-// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
-// <http://www.gnu.org/licenses/>.
-  
-/** @file bits/ctype_inline.h
- *  This is an internal header file, included by other library headers.
- *  Do not attempt to use it directly. @headername{locale}
- */
-
-//
-// ISO C++ 14882: 22.1  Locales
-//
-
-// ctype bits to be inlined go here. Non-inlinable (ie virtual do_*)
-// functions go in ctype.cc
-  
-namespace std _GLIBCXX_VISIBILITY(default)
-{
-_GLIBCXX_BEGIN_NAMESPACE_VERSION
-
-  bool
-  ctype<char>::
-  is(mask __m, char __c) const
-  { return _M_table[static_cast<unsigned char>(__c)] & __m; }
-
-  const char*
-  ctype<char>::
-  is(const char* __low, const char* __high, mask* __vec) const
-  {
-    while (__low < __high)
-      *__vec++ = _M_table[static_cast<unsigned char>(*__low++)];
-    return __high;
-  }
-
-  const char*
-  ctype<char>::
-  scan_is(mask __m, const char* __low, const char* __high) const
-  {
-    while (__low < __high 
-	   && !(_M_table[static_cast<unsigned char>(*__low)] & __m))
-      ++__low;
-    return __low;
-  }
-
-  const char*
-  ctype<char>::
-  scan_not(mask __m, const char* __low, const char* __high) const
-  {
-    while (__low < __high 
-	   && (_M_table[static_cast<unsigned char>(*__low)] & __m) != 0)
-      ++__low;
-    return __low;
-  }
-
-_GLIBCXX_END_NAMESPACE_VERSION
-} // namespace
diff --git a/libstdc++-v3/config/os/solaris/solaris2.9/os_defines.h b/libstdc++-v3/config/os/solaris/solaris2.9/os_defines.h
deleted file mode 100644
index bf84f61..0000000
--- a/libstdc++-v3/config/os/solaris/solaris2.9/os_defines.h
+++ /dev/null
@@ -1,40 +0,0 @@
-// Specific definitions for Solaris 9+  -*- C++ -*-
-
-// Copyright (C) 2000, 2002, 2005, 2009, 2011 Free Software Foundation, Inc.
-//
-// This file is part of the GNU ISO C++ Library.  This library is free
-// software; you can redistribute it and/or modify it under the
-// terms of the GNU General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option)
-// any later version.
-
-// This library is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU General Public License for more details.
-
-// Under Section 7 of GPL version 3, you are granted additional
-// permissions described in the GCC Runtime Library Exception, version
-// 3.1, as published by the Free Software Foundation.
-
-// You should have received a copy of the GNU General Public License and
-// a copy of the GCC Runtime Library Exception along with this program;
-// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
-// <http://www.gnu.org/licenses/>.
-
-#ifndef _GLIBCXX_OS_DEFINES
-#define _GLIBCXX_OS_DEFINES 1
-
-// System-specific #define, typedefs, corrections, etc, go here.  This
-// file will come before all others.
-
-// FIXME: Autoconf if possible.
-#if __cplusplus >= 199711L
-#define __CORRECT_ISO_CPP_MATH_H_PROTO1
-#define __CORRECT_ISO_CPP_STDLIB_H_PROTO
-#define __CORRECT_ISO_CPP_STRING_H_PROTO
-#define __CORRECT_ISO_CPP_WCHAR_H_PROTO
-#endif
-
-#endif
-
diff --git a/libstdc++-v3/configure b/libstdc++-v3/configure
index c7be667..dab2637 100755
--- a/libstdc++-v3/configure
+++ b/libstdc++-v3/configure
@@ -17188,6 +17188,127 @@ $as_echo "$enable_extern_template" >&6; }
 # Checks for operating systems support that doesn't require linking.
 
 
+
+  ac_ext=cpp
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+
+  case "$host" in
+    *-*-solaris2.*)
+      # Solaris 8 FCS only had an overload for double std::abs(double) in
+      # <iso/math_iso.h>.  Patches 111721-04 (SPARC) and 112757-01 (x86)
+      # introduced the full set also found from Solaris 9 onwards.
+      { $as_echo "$as_me:${as_lineno-$LINENO}: checking for float std::abs(float) overload" >&5
+$as_echo_n "checking for float std::abs(float) overload... " >&6; }
+      if test "${glibcxx_cv_abs_float+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+
+	cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <math.h>
+	   namespace std {
+	     inline float abs(float __x)
+	     {  return __builtin_fabsf(__x); }
+	   }
+
+_ACEOF
+if ac_fn_cxx_try_compile "$LINENO"; then :
+  glibcxx_cv_abs_float=no
+else
+  glibcxx_cv_abs_float=yes
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+
+
+      # autoheader cannot handle indented templates.
+
+
+
+      if test $glibcxx_cv_abs_float = yes; then
+        $as_echo "#define __CORRECT_ISO_CPP_MATH_H_PROTO1 1" >>confdefs.h
+
+      else
+        $as_echo "#define __CORRECT_ISO_CPP_MATH_H_PROTO2 1" >>confdefs.h
+
+      fi
+      { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_abs_float" >&5
+$as_echo "$glibcxx_cv_abs_float" >&6; }
+      ;;
+  esac
+
+  ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+
+
+
+  ac_ext=cpp
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+
+  case "$host" in
+    *-*-solaris2.*)
+      # Solaris 8 FCS lacked the overloads for long std::abs(long) and
+      # ldiv_t std::div(long, long) in <iso/stdlib_iso.h>.  Patches 109607-02
+      # (SPARC) and 109608-02 (x86) introduced them.
+      { $as_echo "$as_me:${as_lineno-$LINENO}: checking for long std::abs(long) overload" >&5
+$as_echo_n "checking for long std::abs(long) overload... " >&6; }
+      if test "${glibcxx_cv_abs_long+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+
+	cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <stdlib.h>
+	   namespace std {
+	     inline long
+	     abs(long __i) { return labs(__i); }
+	   }
+
+_ACEOF
+if ac_fn_cxx_try_compile "$LINENO"; then :
+  glibcxx_cv_abs_long=no
+else
+  glibcxx_cv_abs_long=yes
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+
+
+      # autoheader cannot handle indented templates.
+
+      if test $glibcxx_cv_abs_long = yes; then
+        $as_echo "#define __CORRECT_ISO_CPP_STDLIB_H_PROTO 1" >>confdefs.h
+
+      fi
+      { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_abs_long" >&5
+$as_echo "$glibcxx_cv_abs_long" >&6; }
+      ;;
+  esac
+
+  ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+
+
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for EOWNERDEAD" >&5
 $as_echo_n "checking for EOWNERDEAD... " >&6; }
 if test "${glibcxx_cv_system_error1+set}" = set; then :
diff --git a/libstdc++-v3/configure.ac b/libstdc++-v3/configure.ac
index 416c0d7..6e7fea6 100644
--- a/libstdc++-v3/configure.ac
+++ b/libstdc++-v3/configure.ac
@@ -135,6 +135,8 @@ GLIBCXX_ENABLE_FULLY_DYNAMIC_STRING([no])
 GLIBCXX_ENABLE_EXTERN_TEMPLATE([yes])
 
 # Checks for operating systems support that doesn't require linking.
+GLIBCXX_CHECK_MATH_PROTO
+GLIBCXX_CHECK_STDLIB_PROTO
 GLIBCXX_CHECK_SYSTEM_ERROR
 
 # For the streamoff typedef.
diff --git a/libstdc++-v3/configure.host b/libstdc++-v3/configure.host
index 6aa1648..799cec2 100644
--- a/libstdc++-v3/configure.host
+++ b/libstdc++-v3/configure.host
@@ -284,12 +284,9 @@ case "${host_os}" in
     echo "Please specify the full version of Solaris, ie. solaris2.9 " 1>&2
     exit 1
     ;;
-  solaris2.8)
+  solaris2.[89] | solaris2.1[0-9])
     os_include_dir="os/solaris/solaris2.8"
     ;;
-  solaris2.9 | solaris2.1[0-9])
-    os_include_dir="os/solaris/solaris2.9"
-    ;;
   tpf)
     os_include_dir="os/tpf"
     ;;