Re-add support for old flex (2.5.4a and earlier) while still cleaning up properly in new flex.

This commit was SVN r27657.

autogen.pl

@@ -56,13 +56,11 @@ my $exclude_list;
 my $ompi_automake_version = "1.11.1";
 my $ompi_autoconf_version = "2.65";
 my $ompi_libtool_version = "2.2.6b";
-my $ompi_flex_version = "2.5.4";
 
 # Search paths
 my $ompi_autoconf_search = "autoconf";
 my $ompi_automake_search = "automake";
 my $ompi_libtoolize_search = "libtoolize;glibtoolize";
-my $ompi_flex_search = "flex";
 
 # One-time setup
 my $username;
@@ -809,7 +807,6 @@ tools:
     GNU Autoconf: $ompi_autoconf_version
     GNU Automake: $ompi_automake_version
     GNU Libtool: $ompi_libtool_version
-    Flex: $ompi_flex_version
 =================================================================\n";
     my_exit(1);
 }
@@ -1028,7 +1025,6 @@ $step. Checking tool versions\n\n";
 &find_and_check("autoconf", $ompi_autoconf_search, $ompi_autoconf_version);
 &find_and_check("libtool", $ompi_libtoolize_search, $ompi_libtool_version);
 &find_and_check("automake", $ompi_automake_search, $ompi_automake_version);
-&find_and_check("flex", $ompi_flex_search, $ompi_flex_version);
 
 #---------------------------------------------------------------------------
 

ompi/mca/btl/openib/btl_openib_lex.l

@@ -100,7 +100,25 @@ NAME_CHAR   [A-Za-z0-9_\-\.\\\/]
 
 %%
 
+/* Old flex (2.5.4a? and older) does not define a destroy function */
+#if !defined(YY_FLEX_SUBMINOR_VERSION)
+#define YY_FLEX_SUBMINOR_VERSION 0
+#endif
 
+#if (YY_FLEX_MAJOR_VERSION < 2) || (YY_FLEX_MAJOR_VERSION == 2 && (YY_FLEX_MINOR_VERSION < 5 || (YY_FLEX_MINOR_VERSION == 5 && YY_FLEX_SUBMINOR_VERSION < 5)))
+int btl_openib_ini_yylex_destroy(void)
+{
+    if (NULL != YY_CURRENT_BUFFER) {
+        yy_delete_buffer(YY_CURRENT_BUFFER);
+#if defined(YY_CURRENT_BUFFER_LVALUE)
+        YY_CURRENT_BUFFER_LVALUE = NULL;
+#else
+        YY_CURRENT_BUFFER = NULL;
+#endif  /* YY_CURRENT_BUFFER_LVALUE */
+    }
+    return YY_NULL;
+}
+#endif
 
 static int btl_openib_ini_yywrap(void)
 {

ompi/mca/coll/ml/coll_ml_lex.l

@@ -95,7 +95,25 @@ NAME_CHAR   [A-Za-z0-9_\-\.\\\/]
 .                   { return COLL_ML_CONFIG_PARSE_ERROR; }
 %%
 
+/* Old flex (2.5.4a? and older) does not define a destroy function */
+#if !defined(YY_FLEX_SUBMINOR_VERSION)
+#define YY_FLEX_SUBMINOR_VERSION 0
+#endif
 
+#if (YY_FLEX_MAJOR_VERSION < 2) || (YY_FLEX_MAJOR_VERSION == 2 && (YY_FLEX_MINOR_VERSION < 5 || (YY_FLEX_MINOR_VERSION == 5 && YY_FLEX_SUBMINOR_VERSION < 5)))
+int coll_ml_config_yylex_destroy(void)
+{
+    if (NULL != YY_CURRENT_BUFFER) {
+        yy_delete_buffer(YY_CURRENT_BUFFER); 
+#if defined(YY_CURRENT_BUFFER_LVALUE)
+        YY_CURRENT_BUFFER_LVALUE = NULL;
+#else
+        YY_CURRENT_BUFFER = NULL;
+#endif  /* YY_CURRENT_BUFFER_LVALUE */
+    }
+    return YY_NULL;
+}
+#endif
 
 static int coll_ml_config_yywrap(void)
 {

opal/util/keyval/keyval_lex.l

@@ -81,6 +81,25 @@ CHAR        [A-Za-z0-9_\-\.]
 
 %%
 
+/* Old flex (2.5.4a? and older) does not define a destroy function */
+#if !defined(YY_FLEX_SUBMINOR_VERSION)
+#define YY_FLEX_SUBMINOR_VERSION 0
+#endif
+
+#if (YY_FLEX_MAJOR_VERSION < 2) || (YY_FLEX_MAJOR_VERSION == 2 && (YY_FLEX_MINOR_VERSION < 5 || (YY_FLEX_MINOR_VERSION == 5 && YY_FLEX_SUBMINOR_VERSION < 5)))
+int opal_util_keyval_yylex_destroy(void)
+{
+    if (NULL != YY_CURRENT_BUFFER) {
+        yy_delete_buffer(YY_CURRENT_BUFFER); 
+#if defined(YY_CURRENT_BUFFER_LVALUE)
+        YY_CURRENT_BUFFER_LVALUE = NULL;
+#else
+        YY_CURRENT_BUFFER = NULL;
+#endif  /* YY_CURRENT_BUFFER_LVALUE */
+    }
+    return YY_NULL;
+}
+#endif
 
 int opal_util_keyval_yywrap(void)
 {

opal/util/show_help.c

@@ -274,20 +274,20 @@ static int load_array(char ***array, const char *filename, const char *topic)
     if (OPAL_SUCCESS != (ret = open_file(filename, topic))) {
         return ret;
     }
-    if (OPAL_SUCCESS != (ret = find_topic(filename, topic))) {
-        fclose(opal_show_help_yyin);
-        return ret;
+    
+    ret = find_topic(filename, topic);
+    if (OPAL_SUCCESS == ret) {
+        ret = read_topic(array);
     }
 
-    ret = read_topic(array);
-    opal_show_help_finish_parsing();
     fclose(opal_show_help_yyin);
+    opal_show_help_yylex_destroy ();
+
     if (OPAL_SUCCESS != ret) {
         opal_argv_free(*array);
-        return ret;
     }
 
-    return OPAL_SUCCESS;
+    return ret;
 }
 
 char *opal_show_help_vstring(const char *filename, const char *topic, 

opal/util/show_help.h

@@ -171,17 +171,6 @@ OPAL_DECLSPEC char* opal_show_help_vstring(const char *filename,
  */
 OPAL_DECLSPEC int opal_show_help_add_dir(const char *directory);
 
-/** 
- * \internal
- *
- * Internal function to help clean up the flex parser.
- *
- * This function is called internally by the SHS to shut down the
- * flex parser since we may not hit the <<EOF>> rule and call this
- * function automatically.
- */
-OPAL_DECLSPEC int opal_show_help_finish_parsing(void);
-
 END_C_DECLS
 
 #endif

opal/util/show_help_lex.h

@@ -36,6 +36,7 @@
 BEGIN_C_DECLS
 int opal_show_help_yylex(void);
 int opal_show_help_init_buffer(FILE *file);
+int opal_show_help_yylex_destroy(void);
 
 extern FILE *opal_show_help_yyin;
 extern bool opal_show_help_parse_done;

opal/util/show_help_lex.l

@@ -48,9 +48,6 @@ END_C_DECLS
 int opal_show_help_yynewlines = 1;
 bool opal_show_help_parse_done = false;
 
-#define yyterminate() \
-  return opal_show_help_finish_parsing()
-
 %}
 
 WHITE       [\f\t\v ]
@@ -70,12 +67,13 @@ CHAR        [A-Za-z0-9_\-\.]
 
 %%
 
+/* Old flex (2.5.4a? and older) does not define a destroy function */
+#if !defined(YY_FLEX_SUBMINOR_VERSION)
+#define YY_FLEX_SUBMINOR_VERSION 0
+#endif
 
-/*
- * This cleans up at the end of the parse (since, in this case, we
- * always parse the entire file) and prevents a memory leak.
- */
-int opal_show_help_finish_parsing(void) 
+#if (YY_FLEX_MAJOR_VERSION < 2) || (YY_FLEX_MAJOR_VERSION == 2 && (YY_FLEX_MINOR_VERSION < 5 || (YY_FLEX_MINOR_VERSION == 5 && YY_FLEX_SUBMINOR_VERSION < 5)))
+int opal_show_help_yylex_destroy(void)
 {
     if (NULL != YY_CURRENT_BUFFER) {
         yy_delete_buffer(YY_CURRENT_BUFFER); 
@@ -87,7 +85,7 @@ int opal_show_help_finish_parsing(void)
     }
     return YY_NULL;
 }
-
+#endif
 
 static int opal_show_help_yywrap(void)
 {

orte/mca/rmaps/rank_file/rmaps_rank_file_lex.l

@@ -119,6 +119,26 @@ username           { orte_rmaps_rank_file_value.sval = yytext;
 
 %%
 
+/* Old flex (2.5.4a? and older) does not define a destroy function */
+#if !defined(YY_FLEX_SUBMINOR_VERSION)
+#define YY_FLEX_SUBMINOR_VERSION 0
+#endif
+
+#if (YY_FLEX_MAJOR_VERSION < 2) || (YY_FLEX_MAJOR_VERSION == 2 && (YY_FLEX_MINOR_VERSION < 5 || (YY_FLEX_MINOR_VERSION == 5 && YY_FLEX_SUBMINOR_VERSION < 5)))
+int orte_rmaps_rank_file_lex_destroy (void)
+{
+    if (NULL != YY_CURRENT_BUFFER) {
+        yy_delete_buffer(YY_CURRENT_BUFFER); 
+#if defined(YY_CURRENT_BUFFER_LVALUE)
+        YY_CURRENT_BUFFER_LVALUE = NULL;
+#else
+        YY_CURRENT_BUFFER = NULL;
+#endif  /* YY_CURRENT_BUFFER_LVALUE */
+    }
+    return YY_NULL;
+}
+#endif
+
 int orte_rmaps_rank_file_wrap(void)
 {
     orte_rmaps_rank_file_done = true;