Use CMake features; add unit test

cmake/ADIOSFunctions.cmake

@@ -102,10 +102,12 @@ function(GenerateADIOSHeaderConfig)
 ")
     if(ADIOS2_HAVE_${OPT})
       set(ADIOS2_HAVE_${OPT_UPPER} 1)
+      string(APPEND ADIOS2_CONFIG_FEATURE_LIST "\"${OPT_UPPER}\",")
     else()
       set(ADIOS2_HAVE_${OPT_UPPER})
     endif()
   endforeach()
+  string(APPEND ADIOS2_CONFIG_FEATURE_LIST "nullptr")
 
   configure_file(
     ${ADIOS2_SOURCE_DIR}/source/adios2/common/ADIOSConfig.h.in

source/adios2/CMakeLists.txt

@@ -18,7 +18,7 @@ add_library(adios2_core
   core/VariableBase.cpp
   core/Span.cpp core/Span.tcc
   core/Group.cpp core/Group.tcc
-  core/adios2_libinfo.cpp
+  core/Info.cpp
 
 #operator
   operator/callback/Signature1.cpp
@@ -405,10 +405,10 @@ install(FILES common/ADIOSMacros.h common/ADIOSTypes.h common/ADIOSTypes.inl
 install(DIRECTORY core/
   DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/adios2/core COMPONENT adios2_core-development
   FILES_MATCHING PATTERN "*.h"
-  PATTERN "adios2_libinfo.h" EXCLUDE
+  PATTERN "Info.h" EXCLUDE
 )
 
-install(FILES core/adios2_libinfo.h
+install(FILES core/Info.h
   DESTINATION ${CMAKE_INSTALL_INCLUDEDIR} COMPONENT adios2_core-development
 )
 

source/adios2/common/ADIOSConfig.h.in

@@ -31,6 +31,8 @@
 
 @ADIOS2_CONFIG_DEFINES@
 
+#define ADIOS2_FEATURE_LIST @ADIOS2_CONFIG_FEATURE_LIST@
+
 /* Everything between here and the note above is programatically generated */
 
 #ifndef ADIOS2_USE_MPI

source/adios2/core/Info.cpp

@@ -0,0 +1,113 @@
+/*
+ * Distributed under the OSI-approved Apache License, Version 2.0.  See
+ * accompanying file Copyright.txt for details.
+ *
+ * Info.h
+ *
+ *  Created on: June 22, 2023
+ *      Author: Norbert Podhorszki [email protected]
+ */
+
+#include "Info.h"
+#include "adios2/common/ADIOSConfig.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+const int adios2_version_major = ADIOS2_VERSION_MAJOR;
+const int adios2_version_minor = ADIOS2_VERSION_MINOR;
+const int adios2_version_patch = ADIOS2_VERSION_PATCH;
+const char adios2_version_str[] = ADIOS2_VERSION_STR;
+
+static const char *const engines[] = {"BP3",
+                                      "BP4",
+#ifdef ADIOS2_HAVE_BP5
+                                      "BP5",
+#endif
+#ifdef ADIOS2_HAVE_HDF5
+                                      "HDF5",
+#endif
+#ifdef ADIOS2_HAVE_SST
+                                      "SST",
+#endif
+#ifdef ADIOS2_HAVE_MPI
+                                      "SSC",
+#endif
+#ifdef ADIOS2_HAVE_DataMan
+                                      "DataMan",
+#endif
+#ifdef ADIOS2_HAVE_DataSpaces
+                                      "DataSpaces",
+#endif
+                                      "Inline",
+#ifdef ADIOS2_HAVE_DAOS
+                                      "DAOS",
+#endif
+#ifdef ADIOS2_HAVE_MHS
+                                      "MHS",
+#endif
+#ifdef ADIOS2_HAVE_CATALYST
+                                      "ParaViewADIOSInSituEngine",
+#endif
+                                      "Null",
+                                      "Skeleton",
+                                      nullptr};
+
+void adios2_available_engines(size_t *nentries, const char *const **list)
+{
+    *nentries = (sizeof(engines) / sizeof(const char *)) - 1;
+    *list = engines;
+}
+
+static const char *const operators[] = {
+#ifdef ADIOS2_HAVE_BZIP2
+    "BZip2",
+#endif
+#ifdef ADIOS2_HAVE_BLOSC2
+    "Blosc",
+#endif
+#ifdef ADIOS2_HAVE_MGARD
+    "MGARD",
+    "MGARDPlus",
+#endif
+#ifdef ADIOS2_HAVE_SZ
+    "SZ",
+#endif
+#ifdef ADIOS2_HAVE_ZFP
+    "ZFP",
+#endif
+#ifdef ADIOS2_HAVE_PNG
+    "PNG",
+#endif
+#ifdef ADIOS2_HAVE_SIRIUS
+    "Sirius",
+#endif
+#ifdef ADIOS2_HAVE_LIBPRESSIO
+    "libpressio",
+#ifdef ADIOS2_HAVE_SODIUM
+    "Sodium plugin",
+#endif
+#endif
+    nullptr};
+
+void adios2_available_operators(size_t *nentries, const char *const **list)
+{
+    *nentries = (sizeof(operators) / sizeof(const char *)) - 1;
+    *list = operators;
+}
+
+const char *adios2_feature_list[] = {ADIOS2_FEATURE_LIST};
+
+void adios2_available_features(size_t *nentries, const char *const **list)
+{
+    *nentries = (sizeof(adios2_feature_list) / sizeof(const char *)) - 1;
+    *list = adios2_feature_list;
+}
+
+#ifdef __cplusplus
+} // end extern C
+#endif

source/adios2/core/adios2_libinfo.h → source/adios2/core/Info.h

@@ -2,14 +2,16 @@
  * Distributed under the OSI-approved Apache License, Version 2.0.  See
  * accompanying file Copyright.txt for details.
  *
- * adios2_libinfo.h
+ * Info.h
  *
  *  Created on: June 22, 2023
  *      Author: Norbert Podhorszki [email protected]
  */
 
-#ifndef ADIOS2_LIBINFO_H_
-#define ADIOS2_LIBINFO_H_
+#ifndef ADIOS2_INFO_H_
+#define ADIOS2_INFO_H_
+
+#include <stddef.h>
 
 #ifdef __cplusplus
 extern "C" {
@@ -18,19 +20,19 @@ extern "C" {
 extern const int adios2_version_major;
 extern const int adios2_version_minor;
 extern const int adios2_version_patch;
-extern const char *const adios2_version_str;
+extern const char adios2_version_str[];
 
 /** Return the list of available Engines in the installed adios2 library */
-void adios2_available_engines(int *nentries, char const *const **list);
+void adios2_available_engines(size_t *nentries, const char *const **list);
 
 /** Return the list of available Engines in the installed adios2 library */
-void adios2_available_operators(int *nentries, char const *const **list);
+void adios2_available_operators(size_t *nentries, const char *const **list);
 
 /** Return the list of available features in the installed adios2 library */
-void adios2_available_features(int *nentries, char const *const **list);
+void adios2_available_features(size_t *nentries, const char *const **list);
 
 #ifdef __cplusplus
 } // end extern C
 #endif
 
-#endif /* ADIOS2_LIBINFO_H_ */
+#endif /* ADIOS2_INFO_H_ */