Add extern "C" to <sys/mman.h> on HP/UX.

From-SVN: r12872

gcc/fixincludes

@@ -2294,16 +2294,16 @@ struct exception;
   fi
 fi
 
-# assert.h on HP/UX is not C++ ready, even though NO_IMPLICIT_EXTERN_C
-# is defined on HP/UX.
-file=assert.h
-if [ -r $file ] && [ ! -r ${LIB}/$file ]; then
+# assert.h and sys/mman.h on HP/UX are not C++ ready, even though
+# NO_IMPLICIT_EXTERN_C is defined on HP/UX.
+for file in assert.h sys/mman.h; do
+  if [ -r $file ] && [ ! -r ${LIB}/$file ]; then
     cp $file ${LIB}/$file >/dev/null 2>&1 || echo "Can't copy $file"
     chmod +w ${LIB}/$file 2>/dev/null
     chmod a+r ${LIB}/$file 2>/dev/null
-fi
+  fi
 
-if [ -r ${LIB}/$file ]; then
+  if [ -r ${LIB}/$file ]; then
     if egrep '"C"' ${LIB}/$file >/dev/null 2>&1 \
        || egrep '__BEGIN_DECLS' ${LIB}/$file >/dev/null 2>&1; then
       true
@@ -2317,6 +2317,7 @@ extern "C" {
 }
 #endif' >> ${LIB}/${file}.sed 
       rm -f ${LIB}/$file; mv ${LIB}/${file}.sed ${LIB}/$file
+    fi
     if cmp $file ${LIB}/$file >/dev/null 2>&1; then
       rm -f ${LIB}/$file
     else
@@ -2327,7 +2328,7 @@ extern "C" {
       done
     fi
   fi
-fi
+done
 
 # check for broken assert.h that needs stdio.h or stdlib.h
 file=assert.h