Fix mingw32 cross builds.

From-SVN: r50541

libstdc++-v3/ChangeLog

+2002-03-10  Anthony Green  <green@redhat.com>
+
+	* configure.in: Support cross builds to mingw32 target.
+	* configure: Rebuilt.
+
 2002-03-09  Paolo Carlini  <pcarlini@unitus.it>
 
 	* include/bits/locale_facets.tcc (collate::do_transform):

libstdc++-v3/configure.in

@@ -141,12 +141,24 @@ if test -n "$with_cross_host" || test x"$build" != x"$host"; then
       AC_DEFINE(HAVE_FREXPF)
       AC_DEFINE(HAVE_HYPOTF)
       ;;
+    *-mingw32*)
+      AC_CHECK_HEADERS([sys/types.h locale.h float.h])
+      GLIBCPP_CHECK_LINKER_FEATURES
+      GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
+      GLIBCPP_CHECK_WCHAR_T_SUPPORT
+      os_include_dir="config/os/mingw32"
+      is_mingw32=yes;
+      ;;
     *)
       os_include_dir="config/os/newlib"
       AC_DEFINE(HAVE_HYPOT)
       ;;
   esac
 
+  case "$target_alias" in
+    *-mingw32*)
+      ;;
+    *)
       # GLIBCPP_CHECK_STDLIB_SUPPORT
       AC_DEFINE(HAVE_STRTOF)        
       AC_DEFINE(HAVE_STRTOLD)        
@@ -183,6 +195,8 @@ if test -n "$with_cross_host" || test x"$build" != x"$host"; then
       AC_DEFINE(HAVE_SQRTF)
       AC_DEFINE(HAVE_TANF)
       AC_DEFINE(HAVE_TANHF)
+      ;;
+  esac
 
   # At some point, we should differentiate between architectures
   # like x86, which have long double versions, and alpha/powerpc/etc.,