pmix: add "pmix*_library_version" info MCA var

Simple MCA vars for ext1, ext2, and pmix3 components to reflect what
the underlying PMIx library version is.  For example:

```
$ ompi_info --param pmix pmix3x --parsable --level 9 | grep
library_version
mca:pmix:pmix3x:param:pmix_pmix3x_library_version:value:PMIx library version 3.0.0 (embedded in Open MPI)
mca:pmix:pmix3x:param:pmix_pmix3x_library_version:source:default
mca:pmix:pmix3x:param:pmix_pmix3x_library_version:status:writeable
mca:pmix:pmix3x:param:pmix_pmix3x_library_version:level:4
mca:pmix:pmix3x:param:pmix_pmix3x_library_version:help:Version of the underlying PMIx library
mca:pmix:pmix3x:param:pmix_pmix3x_library_version:deprecated:no
mca:pmix:pmix3x:param:pmix_pmix3x_library_version:type:string
mca:pmix:pmix3x:param:pmix_pmix3x_library_version:disabled:false
```

Signed-off-by: Jeff Squyres <[email protected]>

Author: jsquyres

opal/mca/pmix/ext1x/pmix1x_component.c

@@ -2,7 +2,7 @@
  * Copyright (c) 2014-2018 Intel, Inc. All rights reserved.
  * Copyright (c) 2014-2017 Research Organization for Information Science
  *                         and Technology (RIST). All rights reserved.
- * Copyright (c) 2016 Cisco Systems, Inc.  All rights reserved.
+ * Copyright (c) 2016-2018 Cisco Systems, Inc.  All rights reserved
  * $COPYRIGHT$
  *
  * Additional copyrights may follow
@@ -38,6 +38,11 @@ static int external_open(void);
 static int external_close(void);
 static int external_component_query(mca_base_module_t **module, int *priority);
 
+/*
+ * Local variable
+ */
+static char *pmix_library_version = NULL;
+
 
 /*
  * Instantiate the public struct with all of our public information
@@ -66,6 +71,7 @@ mca_pmix_ext1x_component_t mca_pmix_ext1x_component = {
            .mca_open_component = external_open,
            .mca_close_component = external_close,
            .mca_query_component = external_component_query,
+           .mca_register_component_params = external_register
         },
         /* Next the MCA v1.0.0 component meta data */
         .base_data = {
@@ -76,6 +82,22 @@ mca_pmix_ext1x_component_t mca_pmix_ext1x_component = {
     .native_launch = false
 };
 
+static int external_register(void)
+{
+    mca_base_component_t *component = &mca_pmix_pmix3x_component.super.base_version;
+
+    asprintf(&pmix_library_version, "PMIx library version %s", PMIx_Get_version());
+    (void) mca_base_component_var_register(component, "library_version",
+                                           "Version of the underlying PMIx library",
+                                           MCA_BASE_VAR_TYPE_STRING,
+                                           NULL, 0, 0,
+                                           OPAL_INFO_LVL_4,
+                                           MCA_BASE_VAR_SCOPE_CONSTANT,
+                                           &pmix_library_version);
+
+    return OPAL_SUCCESS;
+}
+
 static int external_open(void)
 {
     const char *version;

opal/mca/pmix/ext2x/ext2x_component.c

@@ -2,7 +2,7 @@
  * Copyright (c) 2014-2018 Intel, Inc. All rights reserved.
  * Copyright (c) 2014-2015 Research Organization for Information Science
  *                         and Technology (RIST). All rights reserved.
- * Copyright (c) 2016 Cisco Systems, Inc.  All rights reserved.
+ * Copyright (c) 2016-2018 Cisco Systems, Inc.  All rights reserved
  * $COPYRIGHT$
  *
  * Additional copyrights may follow
@@ -39,6 +39,11 @@ static int external_open(void);
 static int external_close(void);
 static int external_component_query(mca_base_module_t **module, int *priority);
 
+/*
+ * Local variable
+ */
+static char *pmix_library_version = NULL;
+
 
 /*
  * Instantiate the public struct with all of our public information
@@ -91,6 +96,15 @@ static int external_register(void)
                                             MCA_BASE_VAR_SCOPE_READONLY,
                                             &mca_pmix_ext2x_component.silence_warning);
 
+    asprintf(&pmix_library_version, "PMIx library version %s", PMIx_Get_version());
+    (void) mca_base_component_var_register(component, "library_version",
+                                           "Version of the underlying PMIx library",
+                                           MCA_BASE_VAR_TYPE_STRING,
+                                           NULL, 0, 0,
+                                           OPAL_INFO_LVL_4,
+                                           MCA_BASE_VAR_SCOPE_CONSTANT,
+                                           &pmix_library_version);
+
     return OPAL_SUCCESS;
 }
 

opal/mca/pmix/pmix3x/pmix3x_component.c

@@ -2,7 +2,7 @@
  * Copyright (c) 2014-2018 Intel, Inc. All rights reserved.
  * Copyright (c) 2014-2015 Research Organization for Information Science
  *                         and Technology (RIST). All rights reserved.
- * Copyright (c) 2016      Cisco Systems, Inc.  All rights reserved.
+ * Copyright (c) 2016-2018 Cisco Systems, Inc.  All rights reserved
  * $COPYRIGHT$
  *
  * Additional copyrights may follow
@@ -39,6 +39,11 @@ static int external_open(void);
 static int external_close(void);
 static int external_component_query(mca_base_module_t **module, int *priority);
 
+/*
+ * Local variable
+ */
+static char *pmix_library_version = NULL;
+
 
 /*
  * Instantiate the public struct with all of our public information
@@ -90,6 +95,16 @@ static int external_register(void)
                                             MCA_BASE_VAR_SCOPE_READONLY,
                                             &mca_pmix_pmix3x_component.silence_warning);
 
+    asprintf(&pmix_library_version,
+             "PMIx library version %s (embedded in Open MPI)", PMIx_Get_version());
+    (void) mca_base_component_var_register(component, "library_version",
+                                           "Version of the underlying PMIx library",
+                                           MCA_BASE_VAR_TYPE_STRING,
+                                           NULL, 0, 0,
+                                           OPAL_INFO_LVL_4,
+                                           MCA_BASE_VAR_SCOPE_CONSTANT,
+                                           &pmix_library_version);
+
     return OPAL_SUCCESS;
 }